SynoVent E3,E5_Service Manual_V3.0_ EN.pdf

Syno Syn o Vent E3/E E3/E5 5 Ventilator Servic ervi c e Manu Manua al

Intellectual Property ro perty Stateme tatement nt SHENZHEN MINDRAY BIO-MEDICAL ELECTRONICS CO., LTD. (hereinafter called Mindray) owns the intellectual property rights to this product and this manual. This manual may refer to information protected by copyrights or patents and does not convey any license under the patent rights of Mindray, nor the rights of others. Mindray does not assume any liability arising out of any infringements of patents or other rights of third parties. Mindray intends to maintain the contents of this manual as confidential information. Disclosure of the information in this manual in any manner whatsoever without the written permission of Mindray is strictly forbidden. forbidden. Release, amendment, amendment, reproduction, reproduction, distribution, rent, adaption and translation of this manual in any manner whatsoever without the written permission of Mindray is strictly strictly forbidden.

、

and

are the registered trademarks or trademarks owned by

Mindray in China and other countries. All other trademarks that appear in this manual are used only for editorial purposes without the intention of improperly using them. They are the property of their respective respective owners. Contents of this manual are subject to changes without prior notice.

Revision vis ion Histor y This manual has a revision number. This revision number changes whenever the manual is updated due to software or technical specification change. Contents of this manual are subject to change without prior notice. Revision 1.0 is the initial release of the document. 

Revision number: 3.0



Release time:

2012-05

© Copyright 2011-2012 Shenzhen Mindray Bio-Medical Electronics Co., Ltd. All rights reserved.

I

Preface Manual Manual Purpose This manual provides detailed information about the assembling, dissembling, testing and troubleshooting of the equipment to support effective troubleshooting and repair. It is not intended to be a comprehensive, in-depth explanation of the product architecture or technical implementation. Observance of the manual is a prerequisite for proper equipment maintenance and prevents equipment damage and personal injury. This manual is based on the maximum configuration. Therefore, Therefore, some contents may not apply to your monitor. If you have any question, please contact our Customer Service Department.

Intended Audience This manual is geared for biomedical engineers, authorized technicians or service representatives responsible for troubleshooting, repairing and maintaining the ventilator machines.

Password A password is required to access different modes within the ventilator machine. 

User maintenance: 1234



Factory maintenance: 1103

II

Table of Contents 1 Safety................................................................................................................................. 1-1

1.1 Safety Information .......................................................................................................... 1-1 1.1.1 Dangers .............................................................................................................. 1-2 1.1.2 Warnings ............................................................................................................ 1-2 1.1.3 Cautions ............................................................................................................. 1-4 1.1.4 Notes .................................................................................................................. 1-5 1.2 Equipment Symbols ........................................................................................................ 1-6 2 Theory of Operation ........................................................................................................ 2-1

2.1 Pneumatic System ........................................................................................................... 2-1 2.1.1 Pressure Unit Conversion Table ......................................................................... 2-1 2.1.2 Pneumatic Circuit Diagram................................................................................ 2-2 2.1.3 Parts List ............................................................................................................ 2-3 2.1.4 Symbols.............................................................................................................. 2-5 2.1.5 Theory of Operation ........................................................................................... 2-6 2.2 Electrical System........................................................................................................... 2-17 2.2.1 Electrical System Diagram............................................................................... 2-17 2.2.2 Auxiliary Output Assembly.............................................................................. 2-17 2.2.3 Electrical Subsystem of the Main Unit ............................................................ 2-17 2.2.4 Display Electrical Subsystem........................................................................... 2-45 3 Checkout and Test............................................................................................................ 3-1

3.1 System Inspection ........................................................................................................... 3-1 3.2 Power Failure Test (AC Power and Buzzer) ................................................................... 3-1 3.3 Pipeline Tests .................................................................................................................. 3-2 3.3.1 O2 Pipeline Test.................................................................................................. 3-2 3.3.2 Air Pipeline Test ................................................................................................. 3-2 3.4 System Test ..................................................................................................................... 3-2 3.5 Spontaneous Breathing Test ............................................................................................ 3-3 3.6 Humidifier Performance Test .......................................................................................... 3-3 3.7 Compressor Performance Test ........................................................................................ 3-3 3.8 Alarm Tests...................................................................................................................... 3-4 3.8.1 Prepare for Alarm Tests...................................................................................... 3-4 3.8.2 O2 Concentration Monitoring and Alarm Test.................................................... 3-4 3.8.3 Minute Volume (MV) Alarm Test ...................................................................... 3-5 3.8.4 High Paw Alarm Test ......................................................................................... 3-5 3.8.5 Low Paw Alarm Test .......................................................................................... 3-5 3.8.6 Apnea Alarm Test ............................................................................................... 3-5 3.8.7 Breath Rate Alarm Test ...................................................................................... 3-5 3.9 Function Tests ................................................................................................................. 3-6 3.9.1 Testing the Standard Working Mode .................................................................. 3-6

1

3.9.2 Tidal Volume Test............................................................................................... 3-6 3.9.3 Trigger Function Test ......................................................................................... 3-6 3.9.4 Spontaneous Breath Test in CPAP/PSV Mode................................................... 3-6 3.9.5 Special Function Tests........................................................................................ 3-7 3.10 Electrical Safety Inspection........................................................................................... 3-8 3.10.1 Auxiliary Electrical Outlet Test........................................................................ 3-8 3.10.2 Electrical Safety Inspection Test ...................................................................... 3-8 4 Maintenance and Calibration ......................................................................................... 4-1

4.1 Equipment Maintenance.................................................................................................. 4-1 4.1.1 One-year Replaceable Parts ............................................................................... 4-2 4.1.2 Three-year Replaceable Parts............................................................................. 4-8 4.2 Software Upgrade and Software Function Activation..................................................... 4-9 4.2.1 Software Upgrade............................................................................................... 4-9 4.2.2 Software Function Activation .......................................................................... 4-17 4.3 System Test ................................................................................................................... 4-21 4.3.1 System Check................................................................................................... 4-22 4.3.2 Check the Mechanical Ventilation Mode ......................................................... 4-23 4.3.3 Check the Sensor Zero Point............................................................................ 4-25 4.3.4 Check the Flow Sensor Accuracy..................................................................... 4-26 4.3.5 Check the Pressure Sensor Accuracy ............................................................... 4-27 4.4 System Calibration........................................................................................................ 4-30 4.4.1 Flow Calibration (User) ................................................................................... 4-32 4.4.2 Flow Calibration (Factory)............................................................................... 4-33 4.4.3 O2% Calibration (User) .................................................................................... 4-36 4.4.4 O2 Calibration (Factory)................................................................................... 4-37 4.4.5 Pressure and Flow Zeroing............................................................................... 4-38 4.4.6 Pressure Calibration (Factory) ......................................................................... 4-40 4.4.7 Expiration Valve Calibration (Factory) ............................................................ 4-45 5 Troubleshooting................................................................................................................ 5-1

5.1 Introduction..................................................................................................................... 5-1 5.2 Technical Alarm Check ................................................................................................... 5-1 5.3 Pneumatic System Problems ......................................................................................... 5-10 5.3.1 Commonly Used Equipment and Tools............................................................ 5-10 5.3.2 Gas Supply Subsystem..................................................................................... 5-10 5.3.3 Flow Control Subsystem .................................................................................. 5-18 5.3.4 Safety Valve Subsystem ................................................................................... 5-20 5.4 Hardware and Electrical System Problems ................................................................... 5-21 5.5 Troubleshoot Sensor and Valve Related Failures by Using the Valve Test Tool........... 5-24 5.5.1 Preparations before Using the Valve Test Tool................................................. 5-24 5.5.2 Correspondence between the Sensors & Valves on the Valve Test Screen and the Components .............................................................................................................. 5-24 5.5.3 Troubleshooting Methods Using Valve Test Tool ............................................ 5-28

2

6 Repair and Disassembly .................................................................................................. 6-1

6.1 Prepare for Disassembly ................................................................................................. 6-2 6.1.1 Tools................................................................................................................... 6-2 6.1.2 Preparations........................................................................................................ 6-2 6.2 Disassemble the Assemblies ........................................................................................... 6-3 6.2.1 Remove the Ventilator Power Assembly ............................................................ 6-3 6.2.2 Remove the AC-DC Power Board and DC-DC Power Board ........................... 6-3 6.2.3 Remove the Fan ................................................................................................. 6-4 6.2.4 Remove the Main Control Board, Monitoring Board, Extension Board, and Lithium Battery ........................................................................................................... 6-5 6.2.5 Remove the O2 Sensor....................................................................................... 6-6 6.2.6 Remove the Expiration Valve Assembly ............................................................ 6-7 6.2.7 Remove the Flow Sensor Assembly................................................................... 6-7 6.2.8 Remove the Expiration Valve Diaphragm Assembly ......................................... 6-8 6.2.9 Remove VT50 Kernel Assembly........................................................................ 6-8 6.2.10 Remove VT30 Kernel Assembly...................................................................... 6-9 6.2.11 Remove the Gas Supply Control Assembly ................................................... 6-10 6.2.12 Remove the Expiration Valve Seat Assembly .................................................6-11 6.2.13 Remove the Filters ......................................................................................... 6-12 6.2.14 Remove the Safety Valve Gas Reservoir Assembly ....................................... 6-12 6.2.15 Remove the Inspiration Module Board .......................................................... 6-13 6.2.16 Remove the Flow Sensor ............................................................................... 6-13 6.2.17 Remove the Proportional Valve...................................................................... 6-14 6.2.18 Remove the Pneumatic Assembly .................................................................. 6-14 6.2.19 Remove the 110 cmH2O Pressure Relief Valve Assembly ............................ 6-15 6.2.20 Remove the Safety Valve Assembly............................................................... 6-16 6.2.21 Remove the Three-way Valve and Connection Line ...................................... 6-16 6.2.22 Remove the 10 cmH2O Pressure Relief Valve............................................... 6-17 6.2.23 Remove the Electromagnet ............................................................................ 6-18 6.2.24 Remove the Safety Valve Diaphragm Assembly............................................ 6-18 6.2.25 Remove the Safety Valve Seat Assembly....................................................... 6-19 6.2.26 Remove the Gas Reservoir Assembly ............................................................ 6-19 6.2.27 Remove the O2 Sensor Transitional Part ....................................................... 6-20 6.2.28 Remove VT50 Expiration Module Board PCBA........................................... 6-20 6.2.29 Remove VT50 Heating Plate Assembly......................................................... 6-21 6.2.30 Remove the Three-Way Valve Assembly ....................................................... 6-22 6.2.31 Remove the Expiratory Flow Sensor Seat Assembly ..................................... 6-22 6.2.32 Remove the Three-way Valve and Connection Line ...................................... 6-23 6.2.33 Remove VT50 Expiration Valve and Connection Line.................................. 6-23 6.2.34 Remove the Muffler ....................................................................................... 6-24 6.2.35 Remove the PEEP Valve Seat Assembly........................................................ 6-24 6.2.36 Remove the Expiration Valve Locking Bar.................................................... 6-25 6.2.37 Remove VT50 Display Front Housing Assembly .......................................... 6-26 6.2.38 Remove VT30 Display Front Housing Assembly .......................................... 6-27

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6.2.39 Remove the Key Main Board......................................................................... 6-28 6.2.40 Remove the Speaker....................................................................................... 6-29 6.2.41 Remove the Inverter....................................................................................... 6-30 6.2.42 Remove the Alarm Lamp Board..................................................................... 6-31 6.2.43 Remove the Display Bracket Assembly ......................................................... 6-32 6.2.44 Remove VT50 Key Scanning Board PCBA................................................... 6-33 6.2.45 Remove VT50 Power Switch Board PCBA................................................... 6-34 6.2.46 Remove the Copper Axis Encoder Board....................................................... 6-35 6.2.47 Remove the Touchscreen ............................................................................... 6-35 6.2.48 Remove the Display ....................................................................................... 6-36 6.2.49 Remove the Main Unit Handle....................................................................... 6-37 6.2.50 Remove the Filter Water Trap at Gas Supply Inlet......................................... 6-38 6.2.51 Remove the Auxiliary Output Assembly........................................................ 6-39 6.2.52 Replace the Fuse ............................................................................................ 6-40 6.2.53 Remove the Humidifier Bracket Assembly.................................................... 6-40 6.2.54 Remove the Casters........................................................................................ 6-41 6.2.55 Remove the Cart Base, Upright Post, and Panel ............................................ 6-41 7 Electrical and Pneumatic Connections........................................................................... 7-1

7.1 Pneumatic Connections................................................................................................... 7-1 7.1.1 Pneumatic Connection Diagram......................................................................... 7-1 7.1.2 Tubing ................................................................................................................ 7-2 7.2 Electrical Connections .................................................................................................... 7-3 7.2.1 Electrical Connection A (main unit)................................................................... 7-3 7.2.2 Electrical Connection B (auxiliary output assembly)......................................... 7-5 7.2.3 Electrical Connection C (Inspiratory connector assembly)................................ 7-6 7.2.4 Electrical Connection D (Expiratory connector assembly)................................ 7-8 8 Parts .................................................................................................................................. 8-1

8.1 E3 Ventilator Main Unit Assembly ................................................................................. 8-1 8.1.1 Exploded View ................................................................................................... 8-1 8.1.2 Parts List ............................................................................................................ 8-1 8.2 E5 Ventilator Main Unit Assembly ................................................................................. 8-2 8.2.1 Exploded View ................................................................................................... 8-2 8.2.2 Parts List ............................................................................................................ 8-2 8.3 E3 Ventilator Kernel Assembly....................................................................................... 8-3 8.3.1 Exploded View ................................................................................................... 8-3 8.3.2 Parts List ............................................................................................................ 8-3 8.4 E5 Ventilator Kernel Assembly....................................................................................... 8-4 8.4.1 Exploded View ................................................................................................... 8-4 8.4.2 Parts List ............................................................................................................ 8-4 8.5 E3 Ventilator Rack Assembly.......................................................................................... 8-5 8.5.1 Exploded View ................................................................................................... 8-5 8.5.2 Parts List ............................................................................................................ 8-5

4

8.6 E5 Ventilator Rack Assembly.......................................................................................... 8-6 8.6.1 Exploded View ................................................................................................... 8-6 8.6.2 Parts List ............................................................................................................ 8-6 8.7 Ventilator Power Assembly ............................................................................................. 8-7 8.7.1 Exploded View ................................................................................................... 8-7 8.7.2 Parts List ............................................................................................................ 8-7 8.8 E3 Display Front Housing Assembly.............................................................................. 8-8 8.8.1 Exploded View ................................................................................................... 8-8 8.8.2 Parts List ............................................................................................................ 8-9 8.8.3 E3 Display Assembly (configured with primary display) ................................ 8-10 8.8.4 E3 Display Assembly (configured with secondary display)............................. 8-12 8.9 E5 Display Assembly .................................................................................................... 8-14 8.9.1 Exploded View ................................................................................................. 8-14 8.9.2 Parts List .......................................................................................................... 8-14 8.10 E5 Display Front Housing Assembly.......................................................................... 8-15 8.10.1 Exploded View ............................................................................................... 8-15 8.10.2 Parts List ........................................................................................................ 8-15 8.10.3 E5 Display Assembly (configured with primary display) .............................. 8-16 8.10.4 E5 Display Assembly (configured with secondary display)........................... 8-18 8.11 Gas Supply Control Assembly (VT30/DISS).............................................................. 8-19 8.11.1 Exploded View ............................................................................................... 8-19 8.11.2 Parts List......................................................................................................... 8-20 8.12 Gas Supply Control Assembly (VT30/NIST) ............................................................. 8-21 8.12.1 Exploded View ............................................................................................... 8-21 8.12.2 Parts List ........................................................................................................ 8-22 8.13 Gas Supply Control Assembly (VT50/DISS).............................................................. 8-23 8.13.1 Exploded View ............................................................................................... 8-23 8.13.2 Parts List ........................................................................................................ 8-24 8.14 Gas Supply Control Assembly (VT50/NIST) ............................................................. 8-25 8.14.1 Exploded View ............................................................................................... 8-25 8.14.2 Parts List ........................................................................................................ 8-26 8.15 Flow Control Assembly (VT50).................................................................................. 8-27 8.15.1 Exploded View ............................................................................................... 8-27 8.15.2 Parts List ........................................................................................................ 8-27 8.16 Safety Valve Gas Reservoir Assembly ........................................................................ 8-28 8.16.1 Exploded View ............................................................................................... 8-28 8.16.2 Parts List ........................................................................................................ 8-28 8.17 Gas Reservoir Assembly ............................................................................................. 8-29 8.17.1 Exploded View ............................................................................................... 8-29 8.17.2 Parts List ........................................................................................................ 8-29 8.18 Safety Valve Assembly................................................................................................ 8-30 8.18.1 Exploded View ............................................................................................... 8-30 8.18.2 Parts List ........................................................................................................ 8-30 8.19 Safety Valve Seat Assembly........................................................................................ 8-31

5

8.19.1 Exploded View ............................................................................................... 8-31 8.19.2 Parts List ........................................................................................................ 8-31 8.20 Expiration Module (E3/E5)......................................................................................... 8-32 8.20.1 Exploded View ............................................................................................... 8-32 8.20.2 Parts List ........................................................................................................ 8-32 8.21 Expiration Valve Assembly (E3/E5) ........................................................................... 8-33 8.21.1 Exploded View ............................................................................................... 8-33 8.21.2 Parts List ........................................................................................................ 8-33 8.22 Expiration Valve Flow Sensor Assembly .................................................................... 8-34 8.22.1 Exploded View ............................................................................................... 8-34 8.22.2 Parts List ........................................................................................................ 8-34 8.23 Expiration Valve Seat Assembly ................................................................................. 8-35 8.23.1 Exploded View ............................................................................................... 8-35 8.23.2 Parts List ........................................................................................................ 8-36 8.24 Three-way Valve Assembly......................................................................................... 8-37 8.24.1 Exploded View ............................................................................................... 8-37 8.24.2 Parts List ........................................................................................................ 8-37 8.25 Expiratory Flow Sensor Seat Assembly ...................................................................... 8-38 8.25.1 Exploded View ............................................................................................... 8-38 8.25.2 Parts List ........................................................................................................ 8-38 8.26 PEEP Valve Seat Assembly......................................................................................... 8-39 8.26.1 Exploded View ............................................................................................... 8-39 8.26.2 Parts List ........................................................................................................ 8-39

6

1 Safety 1.1 Safety Infor matio n DANGER 

Indicates an imminent hazard that, if not avoided, will result in death or serious injury.

WARNING 

Indicates a potential hazard or unsafe practice that, if not avoided, could result in death or serious injury.

CAUTION 

Indicates a potential hazard or unsafe practice that, if not avoided, could result in minor personal injury or product/property damage.

NOTE 

Provides application tips or other useful information to ensure that you get the most from your product.

1-1

1.1.1 Dang ers There are no dangers that refer to the product in general. Specific “Danger” statements may be given in the respective sections of this manual.

1.1.2 Warnings WARNING 

The ventilator must only be operated and used by authorized medical personnel well trained in the use of this product. It must be operated strictly following the Operator’s Manual.



Before putting the system into operation, the operator must verify that the equipment, connecting cables and accessories are in correct working order and operating condition.



The equipment must be connected to a properly installed power outlet with protective earth contacts only. If the installation does not provide for a protective earth conductor, disconnect it from the power line.



Use AC power source before the batteries are depleted.



To avoid explosion hazard, do not use the equipment in the presence of flammable anesthetic agent, vapors or liquids.



Do not place the ventilator adjacent to any barrier, which can prevent cold air from flowing, resulting in equipment overheat.



Do not open the equipment housings. All servicing and future upgrades must be carried out by the personnel trained and authorized by us only.



Do not rely exclusively on the audible alarm system for patient monitoring. Adjustment of alarm volume to a low level may result in a hazard to the patient. Remember that alarm settings should be customized according to different patient situations and always keeping the patient under close surveillance is the most reliable way for safe patient monitoring.



The physiological parameters and alarm messages displayed on the screen of the equipment are for doctor’s reference only and cannot be directly used as the basis for clinical treatment.



Dispose of the package material, observing the applicable waste control regulations andkeeping it out of children’s reach.



All staff should be aware that disassembling or cleaning some parts of the ventilator can cause risk of infection.



Maintenance mode should be used only when the equipment is not connected to a patient.

1-2

WARNING 

Positive pressure breathing may be accompanied by some side effects such as barotrauma, hypoventilation, hyperventilation etc.



Using the ventilator in the vicinity of high-frequency electrosurgery units, defibrillators or short-wave therapy equipment may impair correct functioning of the ventilator and endanger the patient.



Do not use antistatic or conductive masks or breathing hoses. They can cause burns if they are used near high frequency electrosurgical equipment.



Do not use the ventilator in a hyperbaric chamber to avoid potential fire hazard due to an oxygen-enriched environment.



If the equipment internal monitoring system malfunctions, an alternative plan must be available to ensure adequate level of monitoring. The operator of the ventilator must be responsible for proper patient ventilation and safety under all circumstances.



As required by the relevant rules and regulations, oxygen concentration should be monitored when the equipment is used on the patient. If your ventilator is not configured with such monitoring function or this function is turned off, use a monitor which complies with the relevant international rules and regulations for oxygen concentration monitoring.



When auxiliary electrical outlets are configured, the voltage and current specifications of the devices connected to the electrical outlets must be within the permissible ranges for those of the electrical outlets. When the protection grounding is defective, connection of equipment to the auxiliary electrical outlet may increase the patient leakage current to values exceeding the allowable limits.



When the auxiliary electrical outlet does not work normally, check if the corresponding fuse is burned.



All analog or digital products connected to this system must be certified passing the specified IEC standards (such as IEC 60950 for data processing equipment and IEC 60601-1 for medical electrical equipment). All configurations shall comply with the valid version of IEC 60601-1-1. The personnel who are responsible for connecting the optional equipment to the I/O signal port shall be responsible for medical system configuration and system compliance with IEC 60601-1-1 as well.



Do not touch the patient when connecting the peripheral equipment via the I/O signal ports or replacing the oxygen cell to prevent patient leakage current from exceeding the requirements specified by the standard.



This product must be operated by doctors, respiration therapist or other specially trained and authorized personnel. Anyone unauthorized or untrained must not perform any operation on it.



This equipment is not suitable for use in an MRI environment.

1-3

WARNING 

When the ventilator input system fails or has faults, please contact us immediately for specified personnel to service the ventilator.



Use the humidifiers with a CE mark or recommended by us only.



The ventilator cannot use He and O2 mixed gas.



Make sure that the ventilator altituide is set up correctly. Improper altituide setup may affect tidal volume measurement accuracy. After modifying the altituide setting value, perform flow calibration (factory) again.



Make sure to remove the O2 sensor plug before installing the O2 sensor correctly.

1.1.3 Cautions CAUTION 

The ventilator must be inspected and serviced regularly by trained service personnel.



To ensure patient safety, always prepare pulmotor for use.



Always have a special person attend and monitor the operation of the equipment once the ventilator is connected to the patient.



During the operation of the ventilator, do not disassemble the expiration valve and expiratory flow sensor, which, however, can be disassembled in standby mode.



To ensure patient safety, use only parts and accessories specified in this manual.



At the end of its service life, the equipment, as well as its accessories, must be disposed of in compliance with the guidelines regulating the disposal of such products.



Magnetic and electrical fields are capable of interfering with the proper performance of the equipment. For this reason make sure that all external devices operated in the vicinity of the equipment comply with the relevant EMC requirements. Mobile phone, X-ray equipment or MRI devices are a possible source of interference as they may emit higher levels of electromagnetic radiation.



This system operates correctly at the electrical interference levels identified in this manual. Higher levels can cause nuisance alarms that may stop mechanical ventilation. Pay attention to false alarms caused by high-intensity electrical fields.



Before connecting the equipment to the power line, check that the voltage and frequency ratings of the power line are the same as those indicated on the equipment’s label or specified in this manual.



Always install or carry the equipment properly to avoid damage caused by drop, impact, strong vibration or other mechanical force.

1-4

CAUTION 

The ventilator keeps stable with a 10º tilt in typical configuration. Do not hang articles on both sides of the ventilator for fear of tipping over.

1.1.4 Notes NOTE 

Put the equipment in a location where you can easily see the screen and access the operating controls.



Keep this manual close to the equipment so that it can be obtained conveniently when needed.



The software was developed in compliance with IEC 60601-1-4. The possibility of hazards arising from software errors is minimized.



This manual describes all features and options. Your equipment may not have all of them.

1-5

1.2 Equipment Symbols Alternating current

Battery

Equipotential

Fuse

RS-232 port

CO2/calibration connection

O2↑ button

O2 sensor connector

VGA input and output

VGA output connection

connection Network connection

USB port

Air supply connection

Oxygen supply connection

Pneumatic outlet

Flow sensor

Expiratory port

Inspiratory port

Unlock

Nebulizer connection

Compressor status indicator

Compressor alarm indicator

Compressed air outlet (of

Central pipeline gas supply

the compressor)

inlet (of the compressor)

Manufacture date

Manufacturer Attention: Consult

Serial number

accompanying documents (this manual)

Type BF applied part. Defibrillation-proof

Nurse call connection

protection against electric shock.

1-6

The following definition of the WEEE label applies to EU member states only. This symbol indicates that this product should not be treated as household waste. By ensuring that this product is disposed of correctly, you will help prevent bringing potential negative consequences to the environment and human health. For more detailed information with regard to returning and recycling this product, please consult the distributor from whom you purchased it. * For system products, this label may be attached to the main unit only.

1-7

FOR YOUR NOTES

1-8

2 Theory of Operation 2.1 Pneumatic System 2.1.1 Pressure Unit Convers ion Table Pa

hPa

kPa

1

10

10

2

1

1 X 10

1 X 10

-3

10

1

1 X 10

-2

1 X 10 1 X 10

6

-3

-6

3

1 X 10 2

1.33 X 10 1.33 5

2

1 X 0

5

-2

9.8 X 10 1.02X10

-4

0.75

9.8 X 10

-3

7.5

9.8 X 10

Bar -2

10

1 X 10

0.145

1.02 X10 1 X 10

10

145

1.33 X 10 1.93 X 10

4

4

0.101

760

1

1.03 X10 1.01 X10 1.01

0.736

9.68 X 10

1 X 10

0.75

1 X 10

0.1

6.89

6.89 X 10

-4

2

-3

-2

10.2 1.36

0.1

1.45 X 10

-3

1.32 X 10

1

-3

1 X 10

1

-5

-4

1

1.33 X 10 9.8 X 10

1.45 X 10

1 X 10

0.133 -2

-5

1 X 10

1.02

7.5 X 10 9.8 -4

(PSI)

-4

3

9.8 X 10

6.89 X 10 68.9

-6

mbar

7.5 X10

0.98

1 X 10 3

-3

cmH2O

1

3

3

1 X 10

atm

1 X 10

1.01 X 10 1.01X10 101 98.1

mmHg

10 -1

4

1 X 10

Mpa

-3

-3

1.33 3

-4

-2

3

-2

14.7 -4

-2

1

0.98

9.8 X 10 1.42 X 10

9.8 X 10

1.02

1

1 X 10

1.45 X 10

750

0.98

1.02 X10 1 X 10

1

14.5

51.7

6.8 X 10

70.3

6.89 X 10 1

-4

3

-2

2-1

-3

3

68.9

-2

-2

2.1.2 Pneumatic Circuit Diagram

The above pneumatic circuit diagram is applicable to both E3 and E5, which do not have differences in pneumatic circuit diagram but differ in components and some parameter settings.

2-2

2.1.3 Parts List Symbol

Name

Air Inlet

Air supply connection

O2 Inlet

O2 supply connection

F1/F2

O2/air filter

PS1/PS2

O2/air pressure switch

Preset alarm limit of gas pressure (2.2 bar)

CV1/CV2

O2/air check valve

Ensuring unidirectional gas flow

REG 1/REG 2

O2/control regulator

Function and Index

Air supply inlet (with a supply pressure of 280 - 650 kPa) O2 supply inlet (with a supply pressure of 280 - 650 kPa) Filtering the foreign substance and water in the supplied gas (aperture: 5 µm)

Reducing and maintaining the supply pressure (1.72/2.2 bar at the rear end) For E5 ventilators: peak flow of a single branch is greater than or equals to 180 L/Min, and

PSOL 1 PSOL 2

O2/air proportional valve

stable flow is greater than or equals t o 150 L/Min; For E3 ventilators: peak flow of a single branch is greater than or equals to 120 L/Min, and stable flow is greater than or equals t o 100 L/Min.

F3/F4

O2/air flow sensor filter screen

Stabilizing air flow (aperture: 200 µm)

Q1/Q2

O2/air flow sensor

Monitoring the O2/air flow (range: 0 - 200 L/min)

OS

O2 sensor

Monitoring the O2 concentration (range: 21% - 100%) When the ventilator works normally, the inspiratory

SV

Inspiratory safety valve

safety valve is powered and closed. While in emergency, it is powered off and releases the pressure.

RV1

10 cmH2O pressure relief valve Check valve at

CV3

spontaneously inspiratory port

RV2

Ensuring unidirectional gas flow during spontaneous breath

110 cmH2O pressure relief

Releasing gas when the pressure of inspiratory hoses

valve

exceeds 110 cmH2O

Three-way valve for SOL1

The outlet of released gas during active pressure relief

inspiratory pressure sensor zeroing

PI

Inspiratory pressure sensor

F5

Inspiratory filter

Humidifier

Humidifier

WT

Water trap

Zeroing the inspiratory pressure sensor at a certain period Monitoring the pressure of inspiratory hoses Preventing vapor and bacterium from entering the ventilator. The filter aperture is 0.3 µm. Humidifying the inhaled gas to ensure the temperature and humidity for patients Collecting water drops condensed in the hoses 2-3

Symbol

Name

F6

Expiratory filter Three-way valve for

SOL2

expiratory pressure sensor zeroing

PE

Expiratory pressure sensor

Function and Index

Preventing vapor and bacterium from entering the expiration module. The filter aperture is 0.3 µm. Zeroing the expiratory pressure sensor at a certain period Monitoring the pressure of expiratory hoses Gas controlled expiration valve, which is fully opened or forming PEEP valve with certain pressure (0 - 100

EV

Expiration valve

cmH2O) during the expiratory phase, and fully closed or forming Plimit valve with certain pressure (0 - 100 cmH2O) during inspiratory phase

CV4

Expiratory check valve

Ensuring unidirectional gas flow Heating the expiration valve and expiratory flow sensor

EXH HTR

Expiratory heater

to prevent vapor from being condensed in the expiration valve and expiratory flow sensor A diaphragm flow sensor that monitors the exhaled gas

Q3

Expiratory flow sensor

flow; When gas passes through it, pressure difference exists on both sides of the diaphragm.

PQ3

Differential pressure sensor

Monitoring the pressure difference generated by Q3

NCV

Nebulizer control valve

Opening or closing the nebulizer flow

Nebulizer

Nebulizer

R1

Resistor

R2

Resistor

R3

Resistor

PEEP valve

PEEP proportional valve

PP

PEEP pressure sensor

REG3

PEEP regulator

SOL3

Aerosolizing medication which enters the respiratory tract with the inspiration of the patient Controlling the nebulizer gas flow Controlling the gas flow that flushes the expiratory pressure sensor Restricting the PEEP exhaust speed and providing corresponding resistance Controlling the PEEP ventilation volume to ensure that PEEP reach the set value Used to monitor PEEP pressure Used for Level 2 regulation, to stabilize the gas supply pressure at the front end of the PEEP valve

Three-way valve for air/O2

Ensuring the gas supply when only a single source

connection selection

works

2-4

2.1.4 Symbo ls

WT

Gas supply

Filter

Water trap

Humidifier

On-off valve (two-way

Regulator

110 cmH2O

solenoid valve)

Relief valve

10 cmH2O RV1

RV2

O2

O2 sensor

P

R

Check valve

Nebulizer

Relief valve

Pressure sensor Resistor

Nebulizer

Q

Flow sensor

Three-way solenoid valve

EXH HTR

Heater Proportional valve

Expiration valve

(electromagnetic)

2-5

2.1.5 Theor y of Operati on The pneumatic system of the ventilator consists of six systems as shown below:

2.1.5.1 Gas Supply Subsystem The gas supply subsystem is the starting part the ventilator pneumatic circuit. It introduces the external pipeline supply into the ventilator. To protect the precision solenoid valve and flow sensor in the flow control module, regulator valve and filter are included in the gas supply module to process the supplied gas which is of high and unstable pressure and contains some foreign substances. A pressure switch is configured to monitor the gas supply pressure and check valve to prevent the gas flow inside the ventilator from going back into other external gas supplies. The gas supply subsystem consists of two parallel pneumatic circuits, namely O2 and air, as shown below:

2-6

There are some structural differences between the components of E5 and E3. The picture below is from E5: O2 inlet Air inlet

O2 filter F1 Pressure switch PS1/PS2

Nebulizer control valve NCV Air filter F2

O2 regulator REG1

PEEP regulator REG3 Air regulator REG2

Air/O2 connection selection valve SOL3

Notes: as shown in the above picture, some components, such as the air/O2 connection selection valve SOL3, PEEP regulator REG3, PEEP control air connector , nebulizer control valve NCV, and nebulizer connector, are not included in the gas flow of the gas supply subsystem because some of the components are part of other subsystems. For detailed information, please refer to the ventilator pneumatic circuit diagram. Meanwhile, it can be seen from the above picture that the filters used for Air and O2 branches are both manual drainage filters. But they differ in the appearance. The size of the air filter is greater and the material of its base is plastic. For Air filter, water is drained at the bottom by rotating the handle. The material of the base of O2 filter is metal and water is drained by pushing the filter gas nozzle upward.

2-7

The E3 module differs from the E5 module in that the E3 assembly integrates the gas supply subsystem and the flow control subsystem. The gas supply subsystem of E3 is the same with that of E5, while the flow control subsystem is shown below:

PEEP control gas connector

Nebulization gas connector Proportional valve E3 PSOL1/PSOL2

Air outlet (connected with flow sensor Q1) O2 outlet (connected with flow sensor Q1) To fulfill the actual requirements, two kinds of connectors are configured for the air and O 2 supplies, namely DISS and NIST, with AIR or O 2 marks to indicate the supply gas. The central pipeline leads the supply gas into the ventilator through the air/O2 connector. The supply gas, with a pressure within the range of 280 - 650 KPa, flows through the filter F2/F1 and gets purified, and then through the check valves CV2/CV1, reaches the front end of the regulator. Check valves are used to prevent the gas from flowing back. A pressure switch is connected to the front end of the check valve to ensure that an alarm is triggered when the pressure is lower than the set value (220 KPa) and stops when the pressure restores to the set value. Air/O2 regulator is used to reduce the pressure of the supply gas and maintain it to the set value which for E5 ventilators is 172 KPa, and for E3, 220 KPa. What connects the rear end of the regulator is the flow control subsystem.

2-8

2.1.5.2 Flow Contr ol Subsyst em The flow control subsystem is mainly used to perform accurate control (by proportional valve) and monitoring (by inspiratory flow sensor) over the inspiratory flow and O 2 concentration. Corresponding with the gas supply subsystem, the flow control subsystem also has two parallel branches: air and O2. The subsystem diagram is shown below:

3

4

Q1

Q2

The structure of the flow control subsystem of E5 ventilators are shown below: Air inlet O2 inlet

Proportional valve PSOL2

Proportional valve PSOL1 Filter screen F3/F4

Air flow sensor Q2

O2 flow sensor Q1

Air outlet O2 outlet

2-9

The flow control subsystem of E3 ventilators, as described previously, differs from that of E5 ventilators in the proportional valves of different types (PSOL1/PAOL2), which affects the flow speed of corresponding gas limb. For E3 ventilators, the maximum limb peak flow should be over 120 L/Min, and the stable flow speed should be over 100 L/Min, while for E5 ventilators, over 180 L/Min and 150 L/Min respectively. The E5 and E3 models share the same filter screens (F3/F4), air flow sensors, and O 2 flow sensors. When the ventilator is working, the gas, after passing the gas supply subsystem, is under a pressure of corresponding set value. It flows through the air/O2 inlet of the flow control subsystem and enters the flow control submodule. Then the system opens the proportional valves PSOL1 and PSOL2, and the gas flows through the filter screen and reaches the flow sensors Q1 and Q 2 of various limbs which measures the flow speeds in the limbs. The pressure of the gas from the flow sensor is close to the air pressure. Then the gas goes into the safety valve subsystem, where air and O 2 are mixed.

2.1.5.3 Safety Valve Subsy stem The safety valve subsystem is mainly used to monitor the inspiratory pressure and ensure that the pressure in the inspiratory limb is within the safe range. It also measures the amount of O2 in the inspiratory gas and maintains spontaneous inspiration when the system is powered off. Below is a diagram of the safety valve subsystem: P

PI

SOL1

OS O2

SV 110 cmH2O RV2

10 cmH2O RV1

3

2-10

And the corresponding components are: Gas reservoir

Three-way valve for inspiratory pressure zeroing

Gas outlet

10 cmH2O pressure relief valve Oxygen cell Air inlet

Muffler 110 cmH2O pressure Check valve at spontaneously inspiratory port

relief valve Electromagnet

O2 inlet

The figure below shows the components of the safety valve subsystem. Flowing out from the flow control subsystem, the air and O 2 go through the flow sensor and the safety valve connector, and enter the safety valve subsystem. Then the air and O 2 first flow through the muffler and get mixed, and then the mixed gas enters two limbs: one connected with the 110 cmH2O relief valve which opens to release gas when the inner pressure is over 110 cmH2O; and the other, as a main limb, leads the gas into the reservoir where an Oxygen cell is installed to monitor the O2 concentration of the output gas. At the front end of the reservoir, there is an electromagnet, a check valve ar spontaneous inspiratory port, and a 10 cmH 2O relief valve. At the front end of the reservoir, there is an electromagnet, a check valve ar spontaneous inspiratory port, and a 10 cmH 2O relief valve. The electromagnet is used to actively release pressure. When the pressure inside the ventilator reaches a set value, the electromagnet opens and the gas is released through the 10 cmH 2O relief valve. It also ensures a pressure of over 10 cmH2O inside the ventilator. When the ventilator is powered off, the electromagnet valve core restores to normal position under gravitation, the safety valve opens, and the patient breathes spontaneously. When an inspiration is made, negative pressure is generated in the safety valve subsystem and makes the check valve at the spontaneous inspiration inlet open to the inner side, leading the gas into the safety valve subsystem and then through the gas reservoir into the patient's lungs, and thus completing an inspiration process. The safety valve subsystem external port is the outlet of the gas reservoir. This connector is a coaxial 22 mm conical connector, complying with ISO 5356-2:1987.

2-11

2.1.5.4 Nebuli zer Contro l Subsyst em The nebulizer control system is mainly used to control the nebulized gas flow by the nebulizer control valve, and thus realizing the control over the nebulizer. The pneumatic scheme of the nebulizer control system is as s hown below: NCV R1

The picture below shows the structure of the components:

Nebulizer control valve NCV Air/O2 connection selection valve SOL3 Nebulizer channel connector

2-12

The above picture shows the structure of nebulizer control valve NCV and nebulizer channel connector of E5 gas supply subsystem (similar to E3 module). The NCV is a two-way solenoid valve. The nebulizer channel connector is connected to the Φ6 PU hose in which a nebulizer resistor R1 is connected. The front end of the R1 resistor is connected with the rear-end gas through the air/O 2 selection valve SOL3, and the rear end is connected to the nebulizer nozzle with the Φ6 PU hose. The picture below shows the structure of the inspiration module of E5 ventilators:

Nebulizer resistor

Nebulizer nozzle

The metal connector of the nebulizer nozzle is outside the main unit of the ventilator. When the ventilator works well and the nozzle is connected to the nebulizer with corresponding hoses, the system opens the nebulizer control valve NCV to release the gas through nebulizer resistor R1 and into the nebulizer for nebulization. The nebulized flow should be within the range of 6 - 9 L/Min.

2-13

2.1.5.5 Expiratio n A ssembl y The expiration module is mainly used to realize pressure control and monitoring, and flow monitoring. It differs with the inspiration module in that the gas that passes through it is the expiratory gas from the patients, which results in the need to clean and disinfect the components after use. Below is the pneumatic diagram:

The structure of expiration assembly is as shown below: Expiration heat keeper

Resistor R2

PEEP control gas Expiration

supply connector

valve assembly (plastic)

Patient gas inlet Expiration valve lock Water trap

2-14

PEEP pressure sensor PP

Expiration pressure flushing limb Three-way valve for expiratory pressure sensor zeroing Expiration valve heater

Differential pressure sensor P 3 Expiratory flow sensor Q3

Gas outlet (outside the ventilator)

Muffler Expiratory pressure sensor PE

PEEP control gas outlet (outside the ventilator) PEEP proportional valve

The gas inlet of expiration module is a coaxial 22 mm conical connector, complying with ISO 5356-2:1987. The patient end is connected to the expiration module with patient hose. When the ventilator is running, the expiratory gas flows through the hoses and enters the expiration module (plastic). At the entrance of the expiration module, there is a water trap used to collect condensed water in the hoses and expiration valve. The check valve in the water trap, when the water trap is installed, opens to lead the condensed water into the water trap. When the collected water reaches a certain amount, the water trap should be removed from the ventilator (which closes the check valve to avoid gas leakage) and drained to avoid airway blockage. When the expiratory gas enters the expiration valve, the system changes t he PEEP value in the PEEP proportional valve to a set level, which makes the PEEP valve control gas to flow through the muffler and then out of the ventilator through the PEEP control gas outlet. As the PEEP control gas is from the inspiration module and thus clean and uncontaminated, it does not need any further cleaning or disinfection. The expiratory gas passes the expiration valve and enters the expiratory flow sensor Q3, a diaphragm flow sensor which, with the pressure sampling point, introduces the pressure difference between the front and rear end into the pressure difference sensor PQ3.

2-15

Due to the need for disinfection (steam autoclavable at maximum 134 ℃), the expiration valve and expiratory flow sensor are designed to be easy for removal and re-installation. In normal use, the expiration valve is fixed to the expiration assembly by expiration valve lock, and when you need to disinfect it, the lock can be easily unlocked for you to take the expiration valve and the expiratory flow sensor off. A heater and temperature sensor, controlled by the system, are located at the upper end of the expiration valve housing to prevent the vapor from being condensed in the expiration valve and expiratory flow sensor Q3. An expiration pressure flushing limb in which the flow is maintained at 60 ml/min is also added to prevent the vapor in the expiratory gas from being condensed in the pressure monitoring hoses and affecting the monitoring of expiratory gas pressure.

2.1.5.6 Patient Hose Patient hoses constitute the peripheral pneumatic circuit of the circuit and are independent from the ventilator main unit. Patient hoses can be configured as needed. They function to connect the ventilator and the patient and to humidify the patient’s inhaled gas. The pneumatic scheme is as shown below. F5

WT

Nebulizer

Patient

F6

WT

There are two kinds of patient hoses: disposable and reusable. Generally, disposable hoses integrate hoses, water traps, and Y pieces etc. are made of medical-grade PVC materials. They are of low cost and are discarded after use. Reusable hoses, typically, are made of silicone which can be autoclaved for many times. The water t raps and Y pieces can also be autoclaved. Despite the high cost, reusable hoses reduce clinical cost since they can be used for many times. 2-16

2.2 Electrical System 2.2.1 Electrical System Diagram Please refer to 7.2Electrical Connections.

2.2.2 Auxiliary Outp ut As sembly In practical application, the ventilator is generally used with humidifier, air compressor, and nebulizer. A power supply scheme is adopted to keep the connection compact and in order, as shown below. The auxiliary output assembly distributes the AC power input and supply power for other equipments through three auxiliary output outlets. It is connected to the ventilator with a relatively short power cord.

2.2.3 Electr ical Subsy stem o f t he Main Unit The electrical subsystem of the ventilator consists of main control board, monitoring module (including monitoring board, inspiration module board, and expiration module board), power module (including AC-DC power board and DC-DC power board), extension board, mother board, lithium battery, and related cables.

2-17

2.2.3.1 Main Control Board The main control board is the control core of the ventilator. It functions to: 

Process measurement and status information from various modules and user interface (display, buttons, encoder, and touch screen and so on);



Control the parameter modules;



Control, receive, and process communication requests;



Exchange data with external devices;



Upgrade various module programs.

The main control board consists of CPU, FPGA, and peripheral circuit. The CPU is the ColdFire MCF5372L manufactured by FreeScale. The peripheral circuit includes DDR SDRAM (memory), Nor Flash, and EEPROM. FPGA is on the FlexBus main cable of the CPU. It is mainly used for display, display, which takes most of the FPGA sources sources (including logic sources and pin sources), and audio functions, and expands several serial ports. The following picture shows the main control board.

Main control board

2-18

The pins of various critical connectors of main control board are defined as follows: Network connector, connector, J9 Pin No.

Pin name

Function

1

TX+

Network transmitting signal +

2

TX-

Network transmitting signal -

3

RX+

Network receiving signal +

4

CT1

-

5

CT1

-

6

RX-

Network receiving signal -

7

CT2

-

8

CT2

-

RS-232 connector, J4 Pin No.

Pin name

Function

1

NC

No internal connection connection

2

RXD

RS-232 receiving signal

3

TXD

RS-232 transmitting signal

4

NC


5

GND

Ground

6

NC


7

NC


8

NC


9

NC


Motherboard connector, connector, J7 (refer to the definition of motherboard JUIC connector).

2-19

2.2. 2.2.3. 3.2 2 Monito rin g Module The monitoring module consists of monitoring board, inspiration module board, and expiration module board. The monitoring board is mainly used to control the valves (solenoid valve, proportional valve etc.), acquire and calculate parameters, and drive heaters and fans. The inspiration module board and expiration module board are mainly for pre-processing analog signals and switching valve control signals and heater drive signals. There are two modules on the monitoring board, namely VCM (Ventilation (Ventilation Control Module), used for ventilation control, and VPM (Ventilation (Ventilation Protection Module), whose CPU is MCU, used for ventilation protection. The following pictures show the monitoring board, inspiration module board, and expiration board.

Monitoring board

2-20

The pins of various critical connectors of monitoring board are defined as follows: Calibration/CO2 module connector, J2 Pin No.

Pin name

Function

1

12V

12V, CO2 module power supply

2

TXD1

Serial port transmitting signal (CO2 module)

3

RXD1

Serial port receiving signal (CO2 module)

4

NC


5

GND

Ground

6

12V

12V, CO2 module power supply

7

RXD2

Serial port receiving signal (calibration)

8

TXD2

Serial port transmitting signal (calibration)

9

GND

Ground

USB connector, J8 Pin No.

Pin name

Function

1

VCC_USB1

5V, USB power supply

2

USB_DM1

USB data signal -

3

USB_DP1

USB data signal +

4

GND

Ground

5

VCC_USB2


6

USB_DM2

USB data signal -

7

USB_DP2

USB data signal +

8

GND

Ground

Motherboard connector, connector, J5 (refer to the definition of motherboard JVMC connector).

Inspiration module board

2-21

The pins of various critical connectors of inspiration module board are defined as follows: Air/O2 pressure switch connector, J1/J4 Pin No.

Pin name

Function

1

PS

Pressure switch signal

2

GND

Ground

O2/Air flow sensor connector, J2/J3 Pin No.

Pin name

Function

1

FLOW

Flow signal

2

TEMP

Temperature signal

3

TSI_VCC

5V, flow sensor power supply

4

GND

Ground

5

SPI_DOUT

SPI data output signal

6

SPI_CLK

SPI clock signal

7

SPI_CS

SPI chip selection signal

8

SPI_DIN

SPI data input signal

9

SPI_WP

SPI write protected signal

10

GND

Ground

Nebulizer valve connector, J6 Pin No.

Pin name

Function

1

VPP_IM

12V, nebulizer valve drive signal +

2

SOLV_NBL-

Nebulizer valve drive signal -

3

SOLV_NBL-


Motherboard connector, J7 (refer to the definition of motherboard JIM connector). O2/Air inspiration valve connector, J8/J9 Pin No. 1

Pin name VPPBK/VPP

Function 7V/12V, inspiration valve drive signal + (7V for E3/B3 and 12V for E5/B5)

2

INSP-

Inspiration valve drive signal -

3

INSP-

Inspiration valve drive signal -

O2 sensor connector, J10 Pin No.

Pin name

Function

1

O2+

O2 sensor signal +

2

O2-

O2 sensor signal -

2-22

Inspiratory pressure zeroing three-way valve connector for , J11 Pin No.

Pin name

Function

1

VPP_IM

12V, inspiratory pressure zeroing three-way valve drive signal +

2

ZERO_INSP_PAW-

Inspiratory pressure zeroing three-way valve drive signal -

3

Reserved

Reserved

4

Reserved

Reserved

Safety valve connector, J12 Pin No.

Pin name

Function

1

VPP_IM

12V, safety valve drive signal +

2

VPP_IM

12V, safety valve drive signal +

3

SV-

Safety valve drive signal -

4

SV-


Air/O2 connection selection valve connector, J13 Pin No.

Pin name

Function

1

VPP_IM

12V, Air/O2 connection selection valve drive signal +

2

SOLV_SWITCH-

Air/O2 connection selection valve drive signal -

3

SOLV_SWITCH-

Air/O2 connection selection valve drive signal -

Expiration module board

2-23

The pins of various critical connectors of expiration module board are defined as follows: Expiratory pressure zeroing three-way valve connector, J3 Pin No.

Pin name

Function

1

VPP_EM

12V, expiratory pressure zeroing three-way valve drive signal +

2

ZERO_EXP_PAW-

Expiratory pressure zeroing three-way valve drive signal -

3

Reserved

Reserved

4

Reserved

Reserved

Motherboard connector, J4 (refer to the definition of motherboard JEM connector). PEEP valve connector, J6 Pin No.

Pin name

Function

1

PEEP+

PEEP valve drive signal +

2

PEEP-

PEEP valve drive signal -

3

Reserved

Reserved

4

Reserved

Reserved

Heating plate connector, J7 Pin No.

Pin name

Function

1

HEATER+

Heating plate drive signal +

2

HEATER-

Heating plate drive signal -

3

TEMP1+

Heating plate thermistor +

4

TEMP1-

Heating plate thermistor -

5

TEMP2+

Heating plate thermistor +

6

TEMP2-

Heating plate thermistor -

2.2.3.3 Power Modul e The power module consists of AC-DC power board and DC-DC power board. The power module AC-DC power board switches the AC power input into DC voltage and transmits t o the DC power board which then switches the voltage into several DC voltages that meet the requirements of the ventilator. The DC-DC power board can perform power on/off control, and AC/battery indicator drive functions. Additional, a battery charging board is configured on the DC-DC power board to provide charging and management of lithium batteries. The AC-DC power board and DC-DC power board can also protect the main voltages from overpressure and overcurrent.

2-24

The following pictures show the AC-DC power board and DC-DC power board.

AC-DC power board The pins of various critical connectors of AC-DC power board are defined as follows: AC input connector, J1 Pin No.

Pin name

Function

1

AC-L

AC power live wire

2

NC

No internal connection

3

AC-N

AC power neutral wire

DC output connector, J2 Pin No.

Pin name

Function

1

VXBUS

15.2V, DC voltage of AC-DC output

2

GND

Ground

2-25

DC-DC power board The pins of various critical connectors of DC-DC power board are defined as follows: Motherboard connector, J2 (refer to the definition of motherboard JPWR connector). Fan connector, J3 Pin No.

Pin name

Function

1

VPP

12V, fan power supply

2

FAN_CTRL

Fan control signal

3

FAN_STATUS

Fan status signal

4

GND

Ground

DC input connector, J4 Pin No.

Pin name

Function

1

VXBUS

15.2V, DC voltage of AC-DC output

2

GND

Ground

2.2.3.4 Extension Board The extension board is used to drive SD cards and switch VGA and nurse all signals. The SD drive circuit is realized by an appropriative SD card controller which is a USB connector used to transform the USB signal from the main control board into SD card driving signals.

2-26

The following picture shows the extension board.

Extension board The pins of various critical connectors of extension board are defined as follows: Motherboard connector, J1 (refer to the definition of motherboard JEXT connector). Nurse call connector, J2 Pin No.

Pin name

Function

1

NURSE_CALL

Nurse call signal

VGA connector, J3 Pin No.

Pin name

Function

1

R

VGA R signal

2

G

VGA G signal

3

B

VGA B signal

4

NC


5

GND

Ground

6

GND

Ground

7

GND

Ground

8

GND

Ground

9

NC


10

GND

Ground

11

NC


12

NC


2-27

Pin No.

Pin name

Function

13

HS

VGA horizontal synchronous signal

14

VS

VGA vertical synchronous signal

15

NC


SD card connector, J4 Pin No.

Pin name

Function

1

DATA3

SD card data signal

2

CMD

SD card command signal

3

GND

Ground

4

VCF

3.3V, SD card power supply

5

CLK

SD card clock signal

6

GND

Ground

7

DATA0

SD card data signal

8

DATA1

SD card data signal

9

DATA2

SD card data signal

10

CD

SD card in-place detection signal

11

WP

SD card write protected detection signal

2.2.3.5 Motherb oard The motherboard is mainly used to switch signals. The main control board, monitoring board, expiration module board, DC-DC power board, extension board, UI unit and lithium battery are connected to the motherboard with board-to-board outlet, while the inspiration module board is connected with cables. The following picture shows the motherboard.

Motherboard 2-28

The pins of various critical connectors of motherboard are defined as follows: Battery socket, JBATA/JBATD Pin No.

Pin name

Function

1

BAT+

Battery +

2

BAT+

Battery +

3

BC

Batter in-place signal

4

BAT-

Battery -

5

NTC

Battery internal thermistor + (the negative pole of the thermistor is connected to the negative pole of the battery)

6

BAT-

Battery -

7

BAT-

Battery -

UI unit connector, JUI Pin No.

Pin name

Function

1

VCC

5V power supply

2

GND

Ground

3

VPP

12V power supply

4

GND

Ground

5

Reserved

Reserved

6

Reserved

Reserved

7

Reserved

Reserved

8

UART6_TX


9

UART6_RX


10

VDD_LCD

3.3V, LCD power supply

11

VDD_LCD


12

GND

Ground

13

LVDS_Y2M

LVDS data signal -

14

LVDS_Y2P

LVDS data signal +

15

GND

Ground

16

LVDS_Y3M

LVDS data signal -

17

LVDS_Y3P

LVDS data signal +

18

GND

Ground

19

LED_AC

AC status indication signal

20

GND

Ground

21

LED_BATT

Battery status indication signal

22

GND

Ground

23

UART0_RX


24

UART0_TX


25

GND

Ground

26

LVDS_Y0M

LVDS data signal -

2-29

Pin No.

Pin name

Function

27

LVDS_Y0P

LVDS data signal +

28

GND

Ground

29

LVDS_Y1M

LVDS data signal -

30

LVDS_Y1P

LVDS data signal +

31

GND

Ground

32

LVDS_CLKM

LVDS clock signal -

33

LVDS_CLKP

LVDS clock signal +

34

5B

5V, standby power supply

35

PCON1

ON/OFF control signal

36

DIMMING

Backlight brightness adjustment signal

37

BCON

Backlight switch signal

38

Reserved

Reserved

39

GND

Ground

40

Color_sel

LCD display color selection signal

41

IIC_SCL_UIC

IIC bus clock signal

42

IIC_SDA_UIC

IIC bus data signal

43

GND

Ground

44

SPK-

Speaker drive signal -

45

SPK+

Speaker drive signal +

46

GND

Ground

47

Reserved

Reserved

48

Reserved

Reserved

49

Reserved

Reserved

50

Reserved

Reserved

Main control board connector, JUIC Pin No.

Pin name

Function

1

GND

Ground

2

LVDS_Y0M

LVDS data signal -

3

LVDS_Y0P

LVDS data signal +

4

GND

Ground

5

LVDS_Y1M

LVDS data signal -

6

LVDS_Y1P

LVDS data signal +

7

GND

Ground

8

LVDS_Y2M

LVDS data signal -

9

LVDS_Y2P

LVDS data signal +

10

GND

Ground

11

LVDS_CLKM

LVDS clock signal -

12

LVDS_CLKP

LVDS clock signal +

13

GND

Ground

14

LVDS_Y3M

LVDS data signal -

2-30

Pin No.

Pin name

Function

15

LVDS_Y3P

LVDS data signal +

16

GND

Ground

17

UART1_RX

Serial port receiving signal

18

UART1_TX

Serial port transmitting signal

19

GND

Ground

20

UART2_RX


21

UART2_TX


22

GND

Ground

23

UART7_RX


24

UART7_TX


25

GND

Ground

26

Reserved

Reserved

27

Reserved

Reserved

28

Reserved

Reserved

29

Reserved

Reserved

30

Reserved

Reserved

31

SD_CD


32

SD_WP


33

NC


34

NC


35

NC


36

SPK-


37

SPK+


38

GND

Ground

39

R

VGA R signal

40

G

VGA G signal

41

B

VGA B signal

42

HS

VGA HS signal

43

VS

VGA VS signal

44

GND

Ground

45

Reserved

Reserved

46

Reserved

Reserved

47

GND

Ground

48

Reserved

Reserved

49

Reserved

Reserved

50

GND

Ground

51

Reserved

Reserved

52

Reserved

Reserved

53

Reserved

Reserved

54

Reserved

Reserved

55

GND

Ground 2-31

Pin No.

Pin name

Function

56

VCC_USB1


57

SD_USB_DM

USB data signal -

58

SD_USB_DP

USB data signal +

59

GND

Ground

60

USB_DP1

USB data signal +

61

USB_DM1

USB data signal -

62

USB_DP2

USB data signal +

63

USB_DM2

USB data signal -

64

VCC_USB2


65

VDD_LCD


66

GND

Ground

67

Color_sel

LCD display color selection signal

68

BCON


69

UART0_TX


70

UART0_RX


71

GND

Ground

72

UART6_TX

RS_232 transmitting signal

73

UART6_RX


74

GND

Ground

75

Reserved

Reserved

76

Reserved

Reserved

77

Reserved

Reserved

78

GND

Ground

79

IIC_SCL_UIC


80

IIC_SDA_UIC

IIC bus data signal

81

GND

Ground

82

PCON2


83

Reserved

Reserved

84

Reserved

Reserved

85

AC_DET

AC in-place detection signal

86

BATD_DET

Battery in-place detection signal

87

BATA_DET


88

GND

Ground

89

VDD

3.3V power supply

90

VDD

3.3V power supply

91

GND

Ground

92

GND

Ground

93

VCC

5V power supply

94

VCC

5V power supply

95

GND

Ground

96

GND

Ground 2-32

Extension board connector, JEXT Pin No.

Pin name

Function

1

VDD

3.3V power supply

2

VDD

3.3V power supply

3

VCC

5V power supply

4

VCC

5V power supply

5

Reserved

Reserved

6

Reserved

Reserved

7

Reserved

Reserved

8

Reserved

Reserved

9

GND

Ground

10

GND

Ground

11

GND

Ground

12

Reserved

Reserved

13

Reserved

Reserved

14

GND

Ground

15

Reserved

Reserved

16

Reserved

Reserved

17

GND

Ground

18

NC


19

Reserved

Reserved

20

GND

Ground

21

NC


22

GND

Ground

23

GND

Ground

24

Reserved

Reserved

25

Reserved

Reserved

26

GND

Ground

27

Reserved

Reserved

28

NURSE_CALL

Nurse call signal

29

GND

Ground

30

Reserved

Reserved

31

Reserved

Reserved

32

GND

Ground

33

GND

Ground

34

GND

Ground

35

GND

Ground

36

GND

Ground

37

GND

Ground

38

GND

Ground

39

GND

Ground

2-33

Pin No.

Pin name

Function

40

GND

Ground

41

R

VGA R signal

42

G

VGA G signal

43

B

VGA B signal

44

HS

VGA HS signal

45

VS

VGA VS signal

46

GND

Ground

47

Reserved

Reserved

48

Reserved

Reserved

49

GND

Ground

50

Reserved

Reserved

51

Reserved

Reserved

52

GND

Ground

53

Reserved

Reserved

54

SD_CD


55

GND

Ground

56

SD_WP


57

Reserved

Reserved

58

GND

Ground

59

Reserved

Reserved

60

Reserved

Reserved

61

GND

Ground

62

Reserved

Reserved

63

Reserved

Reserved

64

GND

Ground

65

Reserved

Reserved

66

Reserved

Reserved

67

Reserved

Reserved

68

Reserved

Reserved

69

Reserved

Reserved

70

Reserved

Reserved

71

Reserved

Reserved

72

Reserved

Reserved

73

Reserved

Reserved

74

Reserved

Reserved

75

GND

Ground

76

Reserved

Reserved

77

Reserved

Reserved

78

GND

Ground

79

Reserved

Reserved

80

Reserved

Reserved 2-34

Pin No.

Pin name

Function

81

GND

Ground

82

NC


83

Reserved

Reserved

84

GND

Ground

85

SD_USB_DM

USB data signal -

86

SD_USB_DP

USB data signal +

87

GND

Ground

88

Reserved

Reserved

89

Reserved

Reserved

90

GND

Ground

91

NC


92

NC


93

GND

Ground

94

NC


95

GND

Ground

96

GND

Ground

Monitoring board connector, JVMC Pin No.

Pin name

Function

1

PCON1


2

VBUS

Voltage after AC-DC output combined with battery

3

VXBUS

DC voltage of AC-DC output

4

5B


5

VCC_USB1


6

VCC_USB2


7

O2V+

O2 inspiration valve drive signal +

8

O2V-

O2 inspiration valve drive signal -

9

AIRV+

Air inspiration valve drive signal +

10

AIRV-

Air inspiration valve drive signal -

11

SV+

Safety valve drive signal +

12

SV-


13

VPPIM

12V power supply

14

Reserved

Reserved

15

ZEROV_INSP_PAW-


16

SOLV_NBL-


17

GND

Ground

18

SPI_CLK

SPI clock signal

19

SPI_DOUT


20

SPI_CS_O2


21

SPI_CS_EEPROM


22

AC_DET


2-35

Pin No.

Pin name

Function

23

GND

Ground

24

P_PEEP

PEEP pressure signal

25

VC

10.5V power supply

26

GND

Ground

27

FLOW_O2

O2 flow signal

28

TEMP_O2

O2 temperature signal

29

FLOW_AIR

Air flow signal

30

TEMP_AIR

Air temperature signal

31

O2

O2 concentration signal

32

Reserved

Reserved

33

GND

Ground

34

GND

Ground

35

GND

Ground

36

GND

Ground

37

FAN_CTRL

Fan control signal

38

FAN_STATUS

Fan status signal

39

Reserved

Reserved

40

Reserved

Reserved

41

Reserved

Reserved

42

SOLV_SWITCH-

Air/O2 switchover three-way valve drive signal -

43

Reserved

Reserved

44

Reserved

Reserved

45

Reserved

Reserved

46

Reserved

Reserved

47

PS_O2

O2 pressure switch signal

48

PS_AIR

Air pressure switch signal

49

GND

Ground

50

SPI_DIN


51

SPI_WP


52

SPI_CS_AIR


53

USB_DP1

USB data signal +

54

USB_DM1

USB data signal -

55

GND

Ground

56

Reserved

Reserved

57

AVCC

5V power supply

58

VREF

2.5V power supply

59

GND

Ground

60

P_INSP

Inspiratory pressure signal

61

Reserved

Reserved

62

Reserved

Reserved

63

NURSE_CALL

Nurse call signal 2-36

Pin No.

Pin name

Function

64

Reserved

Reserved

65

VDD

3.3V power supply

66

VDD

3.3V power supply

67

VCC

5V power supply

68

VCC

5V power supply

69

VPP

12V power supply

70

VPP

12V power supply

71

VBB

Busbar voltage after powered on

72

VPPBK

7V power supply

73

ZERO_EXP_PAW-


74

VPP_EM

12V power supply

75

HEATER-


76

HEATER+


77

PEEP-


78

PEEP+


79

GND

Ground

80

UART1_TX


81

UART1_RX


82

UART2_TX


83

UART2_RX


84

GND

Ground

85

UART7_TX


86

UART7_RX


87

USB_DP2

USB data signal +

88

USB_DM2

USB data signal -

89

Reserved

Reserved

90

Reserved

Reserved

91

GND

Ground

92

FLOW_EXP

Expiratory flow signal

93

Reserved

Reserved

94

TEMP_HEATER1

Heating plate temperature signal

95

TEMP_HEATER2


96

TEMP_POWER

Power board temperature signal

2-37

Inspiration module board connector, JIM Pin No.

Pin name

Function

1

O2V+

O2 inspiration valve drive signal +

2

O2V-

O2 inspiration valve drive signal -

3

AIRV+

Air inspiration valve drive signal +

4

AIRV-

Air inspiration valve drive signal -

5

SV+

Safety valve drive signal +

6

SV-


7

VPP_IM

12V power supply

8

ZERO_INSP_PAW-


9

VPP_EM

12V power supply

10

Reserved

Reserved

11

SOLV_SWITCH-

Air/O2 switchover three-way valve drive signal -

12

SOLV_NBL-

Nebulizer drive signal -

13

PS_O2

O2 pressure switch signal

14

PS_AIR

Air pressure switch signal

15

SPI_CLK

SPI clock signal

16

GND

Ground

17

SPI_DIN


18

SPI_DOUT


19

GND

Ground

20

SPI_WP


21

SPI_CS_O2


22

SPI_CS_AIR


23

SPI_CS_EEPROM


24

NC


25

Reserved

Reserved

26

GND

Ground

27

Reserved

Reserved

28

GND

Ground

29

Reserved

Reserved

30

VC

10.5V power supply

31

GND

Ground

32

Reserved

Reserved

33

AVCC

5V power supply

34

GND

Ground

35

Reserved

Reserved

36

VREF

2.5V power supply

37

GND

Ground

38

Reserved

Reserved

39

P_PEEP


2-38

Pin No.

Pin name

Function

40

GND

Ground

41

Reserved

Reserved

42

FLOW_O2

O2 flow signal

43

GND

Ground

44

TEMP_O2

O2 temperature signal

45

P_INSP

Inspiratory pressure signal

46

O2

O2 concentration signal

47

FLOW_AIR

Air flow signal

48

TEMP_AIR

Air temperature signal

49

Reserved

Reserved

50

Reserved

Reserved

Expiration module board connector, JEM Pin No.

Pin name

Function

1

Reserved

Reserved

2

Reserved

Reserved

3

VPP_EM

12V power supply

4

HEATER-


5

HEATER+


6

PEEP-


7

PEEP+


8

GND

Ground

9

Reserved

Reserved

10

SPI_CLK

SPI clock signal

11

SPI_DOUT


12

GND

Ground

13

Reserved

Reserved

14

GND

Ground

15

TEMP_HEATER2


16

GND

Ground

17

P_EXP

Expiratory pressure signal

18

GND

Ground

19

Reserved

Reserved

20

Reserved

Reserved

21

GND

Ground

22

P_PEEP


23

NC


24

NC


25

VPP_EM

12V power supply

26

HEATER-


27

HEATER+


2-39

Pin No.

Pin name

Function

28

PEEP-


29

PEEP+


30

GND

Ground

31

Reserved

Reserved

32

SPI_CLK

SPI clock signal

33

SPI_DOUT


34

GND

Ground

35

Reserved

Reserved

36

GND

Ground

37

TEMP_HEATER2


38

GND

Ground

39

P_EXP

Expiratory pressure signal

40

GND

Ground

41

Reserved

Reserved

42

Reserved

Reserved

43

GND

Ground

44

P_PEEP


45

Reserved

Reserved

46

Reserved

Reserved

47

VPP_EM

12V power supply

48

HEATER-


49

HEATER+


50

PEEP-


51

PEEP+


52

GND

Ground

53

GND

Ground

54

GND

Ground

55

GND

Ground

56

GND

Ground

57

GND

Ground

58

GND

Ground

59

GND

Ground

60

GND

Ground

61

GND

Ground

62

GND

Ground

63

GND

Ground

64

GND

Ground

65

GND

Ground

66

GND

Ground

67

Reserved

Reserved

68

Reserved

Reserved 2-40

Pin No.

Pin name

Function

69

VPP_EM

12V power supply

70

HEATER-


71

HEATER+


72

PEEP-


73

PEEP+


74

Reserved

Reserved

75

Reserved

Reserved

76

SPI_DIN


77

SPI_WP


78

GND

Ground

79

Reserved

Reserved

80

GND

Ground

81

TEMP_HEATER1


82

GND

Ground

83

FLOW_EXP


84

GND

Ground

85

VREF

2.5V power supply

86

AVCC

5V power supply

87

GND

Ground

88

VC

10.5V

89

ZERO_EXP_PAW-


90

ZERO_EXP_PAW-


91

VPP_EM

12V power supply

92

HEATER-


93

HEATER+


94

PEEP-


95

PEEP+


96

Reserved

Reserved

97

Reserved

Reserved

98

SPI_DIN


99

SPI_WP


100

GND

Ground

101

Reserved

Reserved

102

GND

Ground

103

TEMP_HEATER1


104

GND

Ground

105

FLOW_EXP


106

GND

Ground

107

VREF

2.5V power supply

108

AVCC

5V power supply

109

GND

Ground 2-41

Pin No.

Pin name

Function

110

VC

10.5V

DC-DC board connector, JPWR Pin No.

Pin name

Function

1

IIC_SCL_UIC


2

GND

Ground

3

IIC_SDA_UIC

IIC bus data signal

4

GND

Ground

5

PCON2


6

Reserved

Reserved

7

GND

Ground

8

Reserved

Reserved

9

AC_DET


10

BATD_DET


11

GND

Ground

12

BATA_DET


13

PCON1


14

GND

Ground

15

BATD-

Battery -

16

BATD+

Battery +

17

Reserved

Reserved

18

Reserved

Reserved

19

Reserved

Reserved

20

Reserved

Reserved

21

BCA

Battery in-place signal

22

NTCA

23

VPPBK

7V power supply

24

VPPBK

7V power supply

25

GND

Ground

26

GND

Ground

27

GND

Ground

28

GND

Ground

29

GND

Ground

30

GND

Ground

31

GND

Ground

32

VBUS

Voltage after AC-DC output combined with battery

33

GND

Ground

34

FAN_STATUS

Fan status signal

35

FAN_CTRL

Fan control signal

36

GND

Ground

Battery internal thermistor + (the negative pole of the thermistor is connected to the negative pole of the battery)

2-42

Pin No.

Pin name

Function

37

BATD-

Battery -

38

BATD+

Battery +

39

Reserved

Reserved

40

Reserved

Reserved

41

Reserved

Reserved

42

Reserved

Reserved

43

BATA-

Battery -

44

BATA+

Battery +

45

GND

Ground

46

VBB

Busbar voltage after powered on/off

47

GND

Ground

48

VPP

12V power supply

49

GND

Ground

50

VCC

5V power supply

51

GND

Ground

52

VDD

3.3V power supply

53

GND

Ground

54

VXBUS

DC voltage of AC-DC output

55

GND

Ground

56

TEMP_POWER

Power board temperature signal

57

LED_AC


58

LED_BATT


59

BATD-

Battery -

60

BATD+

Battery +

61

Reserved

Reserved

62

Reserved

Reserved

63

Reserved

Reserved

64

Reserved

Reserved

65

BATA-

Battery -

66

BATA+

Battery +

67

GND

Ground

68

VBB


69

GND

Ground

70

VPP

12V power supply

71

GND

Ground

72

VCC

5V power supply

73

GND

Ground

74

VDD

3.3V power supply

75

GND

Ground

76

VPP_FAN

12V power supply

77

GND

Ground 2-43

Pin No.

Pin name

Function

78

5B


79

PCON1


80

DIMMING


81

BATD-

Battery -

82

BATD+

Battery +

83

Reserved

Reserved

84

Reserved

Reserved

85

Reserved

Reserved

86

Reserved

Reserved

87

BATA-

Battery -

88

BATA+

Battery +

89

GND

Ground

90

VBB


91

GND

Ground

92

VPP

12V power supply

93

GND

Ground

94

VCC

5V power supply

95

GND

Ground

96

VDD

3.3V power supply

97

GND

Ground

98

VPP_FAN

12V power supply

99

GND

Ground

100

5B


101

PCON1


102

DIMMING


103

BATD-

Battery -

104

BATD+

Battery +

105

Reserved

Reserved

106

Reserved

Reserved

107

Reserved

Reserved

108

Reserved

Reserved

109

BATA-

Battery -

110

BATA+

Battery +

2-44

2.2.4 Display Electri cal Subs yst em The display electrical subsystem consists of key control board, key scanning board (left), key scanning board (right), power switch board, alarm lamp board, encoder board, inverter, LCD, touch screen, speaker, and corresponding cables.

2.2.4.1 Key Cont rol Board The key control board is mainly used to process input messages of buttons, encoder, and touch screen, switch signals from speakers and alarm lamp, and also drive some LEDs. There are two controllers on the key control board, one is MCU used to process input messages from buttons and encoder, and the other is a touch screen controller used to process input messages on the touch screen. Both the controllers communicate with the main control board through RS-232 connector. The following picture shows the key control board:

Key control board The pins of various critical connectors of key control board are defined as follows: Key scanning board (left) connector, J1 Pin No.

Pin name

Function

1

KEY_OUT1

Row scanning signal (output)

2

5V

5V power supply

3

KEY_OUT0


4

GND

Ground

2-45

Pin No.

Pin name

Function

5

RA0

Row scanning signal (input)

6

LED_AC+

AC indicator control signal

7

RA1

Column scanning signal (input)

8

LED_BATT+

Battery indicator control signal+

9

RA2


10

LED_BATT+

Battery indicator control signal-

11

RA6


12

UR_H_IN

Touchscreen input signal

13

LED_O2

O2↑ indicator control signal

14

LR_XL_IN


15

LED_NEBUL

Nebulizer indicator control signal

16

AD3_IN


17

LED_LOCKSC

Lockscreen indicator control signal

REEN 18

UL_YT_IN


19

PCON_SW

Power switch signal

20

LL_YB_IN


Key scanning board (right) connector, J2 Pin No.

Pin name

Function

1

KEY_OUT3


2

5V

5V power supply

3

KEY_OUT2


4

ENCODE_A

Rotary encoder input A

5

RA0


6

ENCODE_B

Rotary encoder input B

7

RA1


8

ENCODE_Y

Rotary encoder input Y

9

RA2


10

GND

Ground

11

RA6


12

GND

Ground

13

GND

Ground

14

GND

Ground

15

Reserved

Reserved

16

GND

Ground

17

Reserved

Reserved

18

GND

Ground

19

Reserved

Reserved

20

Reserved

Reserved

2-46

Inverter connector, J3 Pin No.

Pin name

Function

1

12V

12V power supply

2

12V

12V power supply

3

GND

Ground

4

GND

Ground

5

BCON


6

DIMMING


Main unit connector, J4 Pin No.

Pin name

Function

1

5V

5V power supply

2

PCON1


3

RS-232_KB_TX

RS-232 transmitting signal (key control board CPU)

4

LED_AC


5

RS-232_KB_RX

RS-232 receiving signal (key control board CPU)

6

LED_BATT


7

GND

Ground

8

GND

Ground

9

5V

5V power supply

10

12V

12V power supply

11

RS-232_TC_TX

RS-232 transmitting signal (touchscreen controller)

12

BCON


13

RS-232_TC_RX

RS-232 receiving signal (touchscreen controller)

14

DIMMING


15

GND

Ground

16

GND

Ground

17

SPK-


18

IIC_SCL_UIC


19

SPK+


20

IIC_SDA_UIC

IIC bus data signal

Speaker connector, J5 Pin No.

Pin name

Function

1

SPK+


2

SPK-


Alarm lamp board connector, J6 Pin No.

Pin name

Function

1

12V

12V power supply

2

GND

Ground

2-47

Pin No.

Pin name

Function

3

IIC_SCL_UIC


4

IIC_SDA_UIC

IIC bus data signal

5

3.3V

3.3V power supply

2.2.4.2 Key Scanning Board (Left) The key scanning board (left) is mainly used to realize button input, LED indicating, and signal switch functions. The following picture shows the key scanning board (left):

Key scanning board (left) The pins of various critical connectors of key scanning board (left) are defined as follows: Key control board connector, J1 (refer to the definition of key control board J1 connector). Touchscreen connector, J2 Pin No.

Pin name

Function

1

RL

Touchscreen signal

2

RT

Touchscreen signal

3

SG

Touchscreen signal

4

LT

Touchscreen signal

5

LL

Touchscreen signal

Power switch board connector, J3 Pin No.

Pin name

Function

1

PCON_SW

Power switch signal

2

GND

Ground

3

LED_AC


4

5V

5V power supply

5

LED_BATT+

Battery status indication signal +

6

LED_BATT-

Battery status indication signal -

2-48

2.2.4.3 Key Scanning Board (Right) The key scanning board (right) is mainly used to realize button input and signal switch functions. The following picture shows the key scanning board (right):

Key scanning board (right) The pins of various critical connectors of key scanning board (right) are defined as follows: Encoder connector, J1 Pin No.

Pin name

Function

1

5V

5V power supply

2

Encode_A

Encoder input signal

3

Encode_B


4

Encode_Y


5

GND

Ground

Key control board connector, J2 (refer to the definition of key control board J2 connector).

2.2.4.4 Power Switch Board The power switch is mainly used to power on/off the ventilator with buttons and run LED indicator drive. The following picture shows the power switch board:

Power switch board The pins of various critical connectors of power switch board are defined as follows: Key scanning board (left) connector, J3 (refer to the definition of key scanning board (left) J3 connector).

2-49

2.2.4.5 Alarm Lamp Board The alarm board is mainly used to indicate alarms, which is realized by an LED driver with IIC connector. The following picture shows the alarm lamp board:

Alarm lamp board The pins of various critical connectors of alarm lamp board are defined as follows: Key control board connector, J1 (refer to the definition of key control board J6 connector).

2-50

3 Checkout and Test WARNING 

After servicing the equipment or replacing its components, compelete all the tests in this section.



Before doing the tests in this section, completely reassemble the equipment and refer to 4 Maintenance and Calibration to do necessary calibrations.

3.1 System Inspection NOTE 

Make sure that the breathing system is correctly connected and not damaged.

Make sure that: 1.

The equipment is not damaged.

2.

All components are correctly attached.

3.

The breathing system (including the expiration valve, humidifier, and nebulizer etc.) is correctly connected and the breathing tubes are not damaged.

4.

The gas supplies are correctly connected and the pressures are correct.

5.

Cylinder valves are closed on models with cylinder supplies.

6.

The casters are not loose and the brake (s) is set and prevents movement.

7.

The power cord is correctly connected. The AC mains indicator and the battery indicator work normally.

8.

The ventilator is switched on or off normally.

3.2 Power Failure Test (AC Power and Buzzer) 1.

Connect the ventilator to the AC power source. Both the AC power indicator and battery indicator should come on. If the AC power indicator is not lit, check the fuse and power board.

2.

Turn on the ventilator. Set the switch to

3.

Unplug the power cord with the system turned on. The massage [Battery in Use] is displayed. Meanwhile, the AC power indicator is extinguished and the battery indicator is flashing.

4.

Reconnect the AC power, and press [Alarm Reset] button. The prompt message disappears. The AC power indicator is illuminated. The battery indicator stops flashing and stays on.

5.

Remove the battery, and disconnect the AC power. The ventilator should be shut off and the buzzer buzz for more than 120 seconds. If the buzzer does not respond, check the buzzer circuit.

3-1

position.

3.3 Pipeline Tests 3.3.1 O2 Pipeline Test 1.

Connect an O2 pipeline supply.

2.

Connect the test lungs.

3.

Turn on the ventilator.

4.

Select [New Patient] in standby mode. After entering the new patient screen, set patient type to [Adu] and vent type to [NIV]. Confirm the settings and exit. Select [Start Ventilation] to allow the ventilator to enter ventilation status.

5.

Ensure that the ventilator ventilates well.

6.

Disconnect the O2 pipeline supply.

7.

As O2 pressure decreases, the alarm [ O2 Supply Pressure Low] should occur.

3.3.2 Air Pipelin e Test 1.

Connect an air pipeline/compressor supply.

2.

Connect the test lungs.

3.

Turn on the ventilator.

4.

Select [New Patient] in standby mode. After entering the new patient screen, set patient type to [Adu] and vent type to [NIV]. Confirm the settings and exit. Select [Start Ventilation] to allow the ventilator to enter ventilation status.

5.

Ensure that the ventilator ventilates well.

6.

Disconnect the air pipeline/compressor supply.

7.

As air pressure decreases, the alarm [ AIR Pressure Low] should occur.

3.4 System Test 1.

Push the [Standby] key. Standby screen appears after your confirmation. The standby screen displays the latest system check time and system check result. Select [Syst. Check ]. Connect air and oxygen supplies and block the patient wye as prompted. Select [Ok ] to start system check item by item.

2.

System check items include: 

O2 flow sensor test: test the O2 inspiratory valve and O 2 flow sensor;



Air flow sensor test: test air inspiratory valve and air flow sensor;



Expiratory flow sensor test;



Pressure sensor test: test the pressure sensors at the inspiratory and expiratory ports;



Expiration valve test;



Safety valve test;



O2 sensor test;



Leakage (mL/min);



Compliance (mL/cmH2O); and



Circuit resistance (cmH2O/L/s).

3-2

3.

System check result can be: 

Pass: indicates that check of this item is completed and is passed.



Fail: indicates that check of this item is not completed and is failed.



Cancel: indicates that check of this item is not completed;



Gas supply not connected: indicates that air/O 2 supply may not be connected when air/O2 flow sensor test is being carried out;



Sensor Off: indicates that the sensor may not be turned on when O 2 sensor test is being carried out.

4.

When system check is being performed, the system prompts [Running ] on the right side of the current check item. In this case, if you select [ Skip], the system stops check of this item immediately and displays [ Cancel]. Check of the next item begins at the same time. If you select [Stop], the system stops check of the current item and also check of the remaining items, and displays [ Cancel].

5.

When checks of all items are completed, if you select [Retry], the system starts a new round of check. When [Exit] is selected, the system exits check and enters standby screen.

6.

Make sure that all the [Syst. Check ] items pass the test.

3.5 Spontaneous Breathing Test 1.

Turn off the ventilator. Wear a mask, and check if the spontaneous breathing is smoothful.

2.

Turn on the ventilator and switch to [Standby ] mode. Wear a mask, and check if the spontaneous breathing is smoothful.

3.6 Humidifi er Perfor mance Test For detailed performance test information, please refer to the Instructions for Use of the humidifier. Make sure that the humidifier works well.

3.7 Compressor Perfo rmance Test For detailed performance test information, please refer to the Instructions for use of the compressor. Make sure that the compressor works well.

3-3

3.8 Alarm Tests 3.8.1 Prepare for Alarm Tests 1.

Connect test lungs to the Y piece patient connection.

2.

Turn on the ventilator. Select [New Patient] in standby mode. Set [Patient Type] to [Adu] and [Vent Type] to [Invasive].

3.

Set the ventilator controls as follows: 

Ventilator mode: [V-A/C]



O2 Concentration [O2%]: 40%



Tidal volume [TV]: 300 ml



Inspiration time/Inspiration and expiration ratio [Tinsp]/[I:E]: 2s/I:E



Breath rate [ f ]: 10 bpm



Inspiratory flow [ flow]: 20 L/min



Positive end-expiratory pressure [ PEEP]: 3 cm H2O



Maximum pressure limit [Plimit]: 40 cmH2O

Note: if no special clarification, the working mode of the ventilator in this chapter refers to standard working status. 4.

Switch the ventilator to working mode.

5.

Make sure that: 

The ventilator displays the correct data.



The inspiration and expiration of the test lungs are in normal period.

3.8.2 O2 Concentration Monitoring and Alarm Test NOTE 

Make sure that the O2 sensor is turned on.

1.

Connect to O2 supply only.

2.

Set the [O2%] to 40%. Check the alarm message fil ed and make sure that the alarm [FiO2 Too High] is displayed on the screen.

3.

Set the [O2%] to 100%. Check the alarm message filed and make sure that the alarm [FiO2 Too High] disappears.

4.

Connect to Air supply only.

5.

Set the [O2%] to 40%. Check the alarm message fil ed and make sure that the alarm [FiO2 Too Low] is displayed on the screen.

6.

Set the [O2%] to 21%. Check the alarm message fil ed and make sure that the alarm [FiO2 Too Low] disappears.

7.

Set the alarm limit to default value.

3-4

3.8.3 Minut e Volume (MV) Alarm Test 1.

Set the [MV Low Alarm Limit] to 5L.

2.

Check the alarm message area and make sure that the alarm [ MV Too Low] is displayed on the screen.

3.

Set the lower alarm limit of [MV] to 2L.

4.

Check the alarm message area and make sure that the alarm [ MV Too Low] disappears.

5.

Set the upper alarm limit of [MV] to 2.5L.

6.

Check the alarm message area and make sure that the alarm [ MV Too High] is displayed on the screen.

7.

Set the upper alarm limit of [MV] to 5L.

8.

Check the alarm message area and make sure that the alarm [ MV Too High] disappears.

9.


3.8.4 High Paw Al arm Test 1.

Set the pressure limit to 20 cmH2O.

2.

Set the paw high alarm limit to 20 cmH2O.

3.

Increase the tidal volume until the peek pressure reaches the high alarm limit. Make sure that the alarm [ Paw Too High] is displayed on the screen.

4.

Decrease the tidal volume until the peek pressure is lower than the high alarm limit. Make sure that the alarm [ Paw Too High] disappears.

5.


3.8.5 Low Paw Alarm Test 1.

In working mode, disconnect the test lungs.

2.

Make sure that the alarm [Paw Too Low] is displayed on the screen.

3.

Reconnect the test lungs, and the ventilator restores to normal working status. The alarm [Paw Too Low] disappears.

3.8.6 Apn ea Alarm Test 1.

In working mode, set the apnea alarm time to 15 s.

2.

Set the breath rate to 3 bpm. Check the alarm message filed and make sure that the alarm [Apnea] is displayed on the screen.

3.

Set the breath rate to 10 bpm. Check the alarm message filed and make sure that the alarm [Apnea] disappears.

4.


3.8.7 Breath Rate Al arm Test 1.

In working mode, set the upper breath rate alarm limit to 15 bpm.

2.

Set the breath rate to 20 bpm. Check the alarm message filed and make sure that the alarm [ftot Too High] is displayed on the screen.

3.

Set the breath rate to 10 bpm. Check the alarm message filed and make sure that the alarm [ftot Too High] disappears.

4.

Set the alarm limit and breath rate to default values.

3-5

3.9 Function Tests 3.9.1 Testing the Standard Working Mode Turn on the ventilator and switch on the gas supply, and make sure that the ventilator is in working mode. 

Ventilator mode: [V-A/C]



O2 concentration [O2%]: 40%



Tidal volume [TV]: 300 ml



Inspiration time/Inspiration and expiration ratio [Tinsp]/[I:E]: 2s/I:E



Breath rate [ f ]: 10 bpm



Inspiratory flow [flow]: 20 L/min



Positive end-expiratory pressure [ PEEP]: 3 cmH2O



Maximum pressure limit [Plimit]: 40 cmH2O

3.9.2 Tidal Volum e Test Turn on the ventilator and connect the test lungs. When the tidal volume becomes stable, observe the tidal volume displayed on the screen. Make sure that the displayed data is stable and the monitoring results are consistent with the set value.

3.9.3 Trigger Function Test 1.

Set the pressure trigger sensibility to -2 cmH2O. Wear a mask and inspire slightly. When the airway pressure is a bit lower t han this set value, check if the ventilator starts ventilation, and if a trigger icon is displayed on the screen.

2.

Set the flow trigger sensibility to 2 cmH2O. Wear a mask and inspire slightly. When the inspiration flow is a bit lower than this set value, check if t he ventilator starts ventilation, and if a trigger icon is displayed on the screen.

3.9.4 Spont aneous Breath Test in CPAP/PSV Mode 1.

Set the ventilator to CPAP/PSV mode, flow trigger to 2 L/min, pressure support level to 15 cmH2O, and other parameters to their default values.

2.

Wear a mask and inspire slightly. When the trigger sensitivity is reached, make sure that inspiration starts and that the ventilator starts PSV ventilation.

3-6

3.9.5 Special Function Tests 

Inspiration Hold

1.

In working mode, press and hold the [Insp. Hold] key for 5 seconds. Make sure that the ventilator starts inspiration hold function.

2.

Release the [Insp. Hold] key, and make sure the ventilator enters expiration phase.



Expiration Hold

1.

In working mode, press and hold the [Exp. Hold] key for 5 seconds. Make sure that the ventilator starts expiration hold function.

2.

Release the [Exp. Hold] key, and make sure that the ventilator enters inspiration phase.



Oxygenation

1.

In working mode, select Adult mode, and press [O2↑] button. Make sure that the ventilator starts to supply 100% oxygen.

2.

Press the [O2↑] button again. Make sure that the ventilator restores to the previous working status.



Suction

1.

Push the [Main Menu] key and select [ Tool], and then [Procedure ]. Select [ Suction] to access the suction procedure screen. Make sure that the ventilator enters the first phase: [O2↑ Before Suction].

2.

Disconnect the patient hoses. Make sure that the ventilator enters the second phase: [Suction Phase].

3.

Re-connect the patient hoses. Make sure that the ventilator enters the third phase: [O2↑ After Suction].



Nebulizer

1.

In working mode, press [Nebulizer ] button. Make sure that the ventilator starts nebulizer function, and if there is gas at the nebulizer output.

2.

After one minute, press the [Nebulizer] button again. Make sure that the ventilator terminates nebulizer function.



Manual Breath In working mode, press [ Manual Breath] button. Make sure that the ventilator delivers a mechanical ventilation immediately.



Sigh

1.

Make sure that the ventilator is working.

2.

Push the [Main Menu] key. Select [ System] and then [Ventilator]. Set sigh to [Δint.PEEP ] and set [Δint.PEEP ] to 5 cmH2O. Make sure that the ventilator starts si gh function once in every 3 minutes, and if the sigh started within two continuous ventilation cycles is effective.

3.

Push the [Main Menu] key. Select [ System] and then [Ventilator]. Set sign to [TV], and set the ventilation parameter [ Sigh] to [ON]. Make sure that the ventilator starts a sign every one hundred breaths or 7 minutes (depending on which period is shorter), and if the started sigh delivers 1.5 ti mes of the set tidal volume.

3-7

3.10 Electrical Safety Insp ection NOTE 

Perform electrical safety inspection after servicing or routine maintenance. Before the electrical safety inspection, make sure all the covers, panels, and screws are correctly installed.

3.10.1 Auxili ary Electri cal Outlet Test Verify AC voltage is present at each auxiliary outlet when the ventilator is connected with power.

3.10.2 Electrical Safety Inspection Test 1.

Connect the compressor, if configured, to the auxiliary electrical outlet.

2.

Connect the AC power cord to the safety analyzer.

3.

Perform the following earth leakage tests: normal polarity; reverse polarity; normal polarity with open neutral; and reverse polarity with open neutral.

4.

Verify the maximum leakage current does not exceed 500 μA (0.5 mA) in the first two tests. While for the last two tests, verify that the maximum leakage current does not exceed 1000 μA (1 mA).

5.

Perform protective earth resistance test: a. Plug the probes of the analyzer into the protective earth terminal and equipotential terminal of the AC power cord. b.

Test the earth resistance with a current of 25 A.

c.

Verify the resistance is less than 0.1ohms (100 mohms).

d. Plug the probes of the analyzer into the protective earth terminal of the AC power cord and the protective earth terminal of any auxiliary outlet. Repeat steps b and c. e. If the resistance is larger than 0.1ohms (100 mohms) but less than 0.2ohms (200 mohms), disconnect the AC power cord and plug the probe that is previously plugged in the protective earth terminal of the AC power cord into the protective earth contact of the power outlet. Repeat steps a to d.

NOTE 

Make sure the safety analyzer is authorized by certificate organizations (UL, CSA, or AMAI etc.). Follow the instructions of the analyzer manufacturer.



If cart is not configured, do not perform auxiliary outlet related tests, and the above mentioned AC power outlet should refer to the power outlet of the equipment.

3-8

4 Maintenance and Calibration WARNING 

When it comes to test and maintain the equipment, make sure that the patient is disconnected from the equipment.



The equipment may have been used on patients carrying infectious diseases. Before testing or maintaining the equipment, wear sterile rubber gloves to reduce the risk of being infected.



When the equipment to be maintained contains blood or other secretion, clean, disinfect and sterilize the equipment by strictly following the control and safety handling procedures for infectious diseases.

4.1 Equipment Maintenance To ensure the long-term reliability and stability of the ventilator, periodical maintenance of the equipment and replacement of its parts must be performed by authorized service personnel. For details about parts replacement, refer to 6Repair and Disassembly. Periodical parts replacement can be carried out every year or every three years. Make records of the parts that have been replaced before the periodical replacement.

NOTE 

These schedules are the minimum frequency based on typical usage of 2000 hours per year. You should service the equipment more frequently if you use it more than the typical yearly usage.



To avoid equipment damage or personal injury, replace the parts which need to be replaced periodically even if they are not worn or damaged when the due date arrives.

4-1

4.1.1 One-year Replaceable Parts List of one-year service package: SN

P/N

Description

Qty

1

040-001275-00

O2 sensor

1

2

082-000739-00

Seal for expiration valve assembly

4

3

115-005288-00

Expiration valve flow sensor assembly

1

4

042-003037-00

Filter screen at the front end of inspiratory flow sensor

8

5

082-000565-00

Seal for the expiration valve cover

1

6

049-000081-00

7

082-000753-00

Filter core (5 μm), (maintenance package)

2

8

082-001062-00

Small filter, accuracy of 0.22μm, diameter of 25mm

3

Diaphragm for expiration valve/spontaneous breath check valve

4.1.1.1 Parts Replacement 1.

As required, replace the O2 sensor (040-001275-00) every 12 months.

Push the latch to remove the O2 cell door

Oxygen Cell (040-001275-00)

4-2

2

2.

As required, replace the seal for expiration valve assembly (082-000739-00) every 12 months.

Seal (082-000739-00) 3.

As required, replace the expiratory flow sensor assembly (115-005288-00) every 12 months. Expiratory flow sensor assembly (115-005288-00)

4-3

4.

As required, replace the filter screen (042-003037-00) at the front end of inspiratory flow sensor every 12 months (The P/N of the inspiratory filter screen assembly is 115-008652-00).

Inspiratory filter screen assembly （115-008652-00）

Filter screen at the front end of inspiratory flow sensor (042-003037-00)

4-4

5.

As required, replace the seal for expiration valve cover (082-000565-00) every 12 months.

Seal for the expiration valve cover (082-000565-00)

4-5

6.

As required, replace the diaphragm for expiration valve/spontaneous breath check valve (049-000081-00) every 12 months.

Check valve diaphragm (049-000081-00)

4-6

7.

As required, replace the filter of the air supply inlet assembly every 12 months (filter core (5 μm), (082-000753-00)).

Filter core

8.

As required, replace the small filters at the front end of expiratory flow sensor and differential pressure sensor and the small filter at the front end of inspiratory pressure sensor every 12 months. The P/N of the small filter is “082-001062-00” (small filter, accuracy of 0.22 μm, diameter of 25mm).

Small filter (082-001062-00)

Replace the small filter (082-001062-00) between the sampling line of expiratory differential pressure sensor and sampling line of expiratory flow sensor. There are two sampling paths here. Replace the filter on each path. The filter end marked “PTFE 0.22um” is the inlet which should be connected to the sampling connector of expiratory flow sensor. 4-7

Small filter (082-001062-00)

Replace the small filter (082-001062-00) between the inspiratory pressure sensor and inspiratory pressure zeroing three-way valve. The filter end marked “PTFE 0.22um” is the inlet which should be connected to the inspiratory pressure zeroing three-way valve.

4.1.1.2 Checkou t and Test of the Ventilator Perform the following mantenance procedures every 12 months: For detailed information, please refer to 3Checkout and Test and 4.4 System Calibration.

4.1.2 Three-year Replaceable Parts List of three-year service package: SN

P/N

Description

Qty

1

022-000008-00

Battery, Li-ion, 11.1V, 4500mAh, LI23S002A

1 or 2

2

M05-010R03---

Cell battery, Lithium, 3V, 35mAh, D12.5*2.0

1

4-8

4.2 Software Upgrade and Software Funct ion Activation CAUTION 

Software upgrade and software configuration activation can be performed by professional service personnel only.

You can perform software upgrade on the ventilator by downloading the upgrade software through network or by using USB device. You can also perform online upgrade of the software supported configuration through the activation code.

4.2.1 Software Upgrade You can upgrade the following programs on the ventilator by downloading the upgrade software through network: 

Booting software



System software



Multi-language library



General configuration (requires password )



Main control board FPGA display drive software



MO2B module software



Monitoring module software



Auxiliary monitoring module software



Key board software

CAUTION 

Before software upgrade, disconnect the ventilator from the patient and back up the important data.

4-9

NOTE 

Make sure that the version of the upgrade package is the desired one. To obtain the latest upgrade package, please contact us.



Before upgrading the system software, check the version information of the booting software. If it is not the latest, upgrade the booting software to the latest version first and make sure of software compatibility.

You can select the following operations to upgrade the corresponding software based on your requirement. You must perform 4.2.1.1 Network Connection before upgrading any software.

4.2.1.1 Network Connection

NOTE 

Before upgrading any software, make sure that the network cable, Hub, and notebook computer are connected correctly and reliably.



The recommended length of the network cable is not greater than 1 m.

Perform network connection as follows before software upgrade: 1.

Connect the ventilator, Hub and notebook computer by using the straight through cable. Connect the Hub to the power source and make s ure that the network is connected.

2.

Select [Main Menu] hot key and then [Set IP Address >>] to check the current IP address of the ventilator, which is 192.168.23.250 by default.

3.

Set the IP address of the notbook computer. Make sure that the IP address of the ventilator is in the same IP segment with the notebook computer. For example, if the current IP address of the ventilator is the default “192.168.23.250”, the IP address of the notebook can be set to “192.168.23.23”.

4.2.1.2 Boot ing Software Network Upgrade

CAUTION 

Switching off or powering off the equipment during booting software upgrade can cause system down.

NOTE 

When selecting the upgrade package, make sure that the checksum and version are same to that provided by the factory.

4-10

To upgrade the booting software of the ventilator: 1.

Run the network upgrade downloading software on the notebook computer to access the software upgrade screen.

2.

Click [Select Package] to enter the [Select Package] menu.

3.

Click [>>>]. Select the booting software of the ventilator (code: BIOS) in the dialog box and then click [ Open] to confirm.

4.

Check the checksum and version of the booting software as shown below:

5.

If the checksum and version are correct, click [Ok].

6.

Click [Start (Single)] on the main screen.

7.

Re-start the ventilator to start to upgrade the booting software.

8.

Wait for the message prompting upgrade success. Select the [ Main Menu] hot key, then [Maintenance >>], then [System Information >>], and then [ Version Information >>] to check the version information of the booting software.

4-11

NOTE 

After completing booting software upgrade, turn on the ventilator to confirm the correctness of upgrade software version information.

4.2.1.3 System Software Network Upgrade

NOTE 

Before upgrading the system software, check the version information of the booting software. If it is not the latest, upgrade the booting software to the latest version first and make sure of software compatibility.



Before upgrading the system software, record the current settings of the ventilator so as to restore the pre-upgrade settings after software upgrade.



When selecting the upgrade package, make sure that the checksum and version are same to those provided by the factory. You also need to check the machine code corresponding to the ventilator to be upgraded.

Before upgrading the system software, note the matching between machine name and machine code as listed below:

Machine name

Machine Code

Remarks

VT 30/35

B3/E3

/

VT 50/55

B5/E5

/

To upgrade the system software: 1.

Check and confirm that the booting software of the ventilator is of the latest version. If not, refer to 4.2.1.2 Booting Software Network Upgrade to upgrade to the latest version.

4-12

2.

When selecting the system software upgrade package, confirm the correctness of checksum and version. You also need to check the machine code, as shown below:

3.

Other operations are similar to those for booting software upgrade. Refer to 4.2.1.2 Booting Software Network Upgrade to finish the upgrade.

NOTE 

After completing system software upgrade, turn on the ventilator to confirm the correctness of upgrade software version information.



After completing system software upgrade, restore the pre-upgrade settings of the system settings which are saved in case of power failure.

4.2.1.4 Module Software Network Upgrade

NOTE 

When selecting the upgrade package, make sure that the checksum and version are same to those provided by the factory. You also need to check the module code corresponding to the ventilator to be upgraded.

4-13

The module software mentioned here includes monitor module software, auxiliary monitoring module software, key board software and MO2B CO 2 module software. Their upgrade procedures are similar to those for booting software upgrade except that when selecting the upgrade package, apart from making sure of the correctness of checksum and version, you also need to confirm the module code corresponding to the module to be upgraded. Before upgrading the module software, note the matching between module name and module code as listed below: Module name

Module code

Monitoring Module

VCM

Auxiliary monitoring module

VPM

Key board

KEYBOARD

MO2B CO2

0611-CO2-MO2B

To upgrade the module software: 1.

When selecting the module software upgrade package, confirm the correctness of checksum and version. You also need to check the module code, as shown below:

2.

Other operations are similar to those for booting software upgrade. Refer to 4.2.1.2 Booting Software Network Upgrade to finish the upgrade.

NOTE 

After completing module software upgrade, turn on the ventilator to confirm the correctness of upgrade software version information.

4-14

4.2.1.5 Combination Package Network Upgrade The operations to upgrade the combination package is the same with those for system software upgrade. Please refer to related section.

NOTE 

After completing combination package software upgrade, you need to confirm the upgraded versions of each software.



If the upgrade of an individual software fails, you will need to upgrade all the software in the combination package, including those upgraded successfully.

4.2.1.6 USB Device Upgrade

NOTE 

Make sure that the version of the upgrade package is the desired one. To obtain the latest upgrade package, please contact us.

1.

Save the upgrade package and the configuration file of the same name under the directory of UPGRADE of USB device.

2.

Set the upgrade mode of USB device in the system software. Select [ Main Menu] → [Service ] → enter the required password → [Setup] → [System]. Set [Update] to [On].

3.

Insert the USB device into the USB port of the ventilator. Restart the ventilator and the ventilator enters upgrade process.

4.

After upgrade is completed, remove the USB device and restart the ventilator. Check if the machine upgrade is completed.

NOTE 

When there are combination package and single upgrade package file in the USB device, the combination package is upgraded by default. To upgrade a single upgrade package, you need to delete the combination package from the USB device first.



Each time when different packets for USB device upgrade are upgraded, the configuration files generated simultaneously need to be put in.



After upgrading booting software upgrade packet, make sure to upgrade the system software upgrade package.



When making the combination upgrage package, put VCM module software package on the last to prevent the buzzer from making sound during the upgrade.

4-15

4.2.1.7 Commo nly-encoun tered Problems and Recommended Ac tio ns Failure description

Possible cause

Recommended solution

During upgrade, the buzzer on

The BIOS program of the

Return the main control board to

the main control board buzzes

main control board is

factory for repair.

long, resulting in upgrade

damaged due to possible

failure.

power failure during upgrade or upgrade failure.

In case of system software

The version of BIOS program

1. Check the compatibility of

upgrade, the upgrade screen

is incompatible with that of

software version. Select the

can be accessed but upgrade is

system software.

appropriate version for upgrade.

always failed.

The network is not stable.

Refer to the system software-BIOS-upgrade tool compatibility table. 2. Check the network connection between the notebook computer, Hub and ventilator to make sure that the network cable is not loose.

After software upgrade

The selected system software

1. Check the upgrade package,

success, only V-A/C mode is

only supports V-A/C mode.

and reply for another one.

The upgrade booting screen is

The network is not in good

1. Re-check the network

inaccessible.

condition.

connection between the

available.

notebook computer, Hub and ventilator. Check that the network cable is connected correctly and reliably. 2. Make sure that Hub is powered on. After the system software or

The version of system

Re-confirm the version

XX module software is

software does not match that

information of XX module

upgraded, XX module

of XX module software. Or,

software and the module code. If

communication stop is

the module is damaged.

they are correct, return the faulty

alarmed.

module to factory for repair.

4-16

4.2.2 Soft ware Funct ion Act ivation The factory can activate all the functions listed in the following table through activation codes. When the user wants to add any function listed i n this table, the service engineer can apply to the factory for activation code so as to activate the corresponding function.

Configurable function

Influence on the software interface

Remarks

NTV

Not involved

Paid configuration

DuoLevel PRVC APRV P0.1

Not involved. If none of the functions is configured,

PEEPi

the special function property page is not displayed in

NIF

the main menu.

Suction WOB

Not displayed

RSBI

4-17

4.2.2.1 Apply for Software Functio n Acti vation Code

NOTE 

To apply for activation code, you must provide the relevant information of the ventilator whose configurations are to be activated, such as machine ID, existing configuration and configuration to be activated.

When the user wants to add any paid configuration listed in the above table, the service engineer must apply to the Service Department for the software function activation code based on the user's need. To apply for acctivation code:

1.

Record the serial number of the ventilator whose configurations are to be activaed.

2.

Record the machine ID and the current configuration of the ventilator. Select [ Main Menu] hot key, [System Information >>], and then [Configuration Information >>]

to access the [ Configuration Information] menu:

3.

Record the configuration the user wants to activate.

4.

Return the recorded information to the Service Department to apply for the corresponding activation code.

4-18

4.2.2.2 How to A cti vate Software Functi on

NOTE 

Before activation, check and record the user’s existing paid configurations and also the paid configurations to be added.



After entering the activation code, make sure that the entered activation code is same to that provided by the factory.

To activate software functions: 1.

Accessing the [Activate Functions] menu: select [ Main Menu] hot key, then [Maintenance >>, then [Factory Maintenance >>], and then [Activate Functions], as shown below:

2.

If you select to activate the function by [Activation Code], enter the required activation code in the [Activate Functions] menu. If you select to activate the function by [USB Memory], plug the USB device with required activation code onto the ventilator.

3.

Select [Activate]. If the entered activation code is correct, a prompt message is displayed as shown below:

4.

Click [Ok ] to restart the ventilator so as to activate the new configuration.

4-19

NOTE 

Powering off the ventilator before the message [Function activation completed! Please restart the ventilator to activate the function.] is prompted can damage the BIOS program on the main control board.



After activation success is prompted, restart the ventilator to activate both the existing and new paid configurations after software upgrade.

4.2.2.3 Commo nly-encoun tered Problems and Recommended Ac tio ns Failure description

Possible cause


After activation, restart the

During activation, the

Return the main control board to

ventilator. The main control

ventilator is powered off or

factory for repair.

board buzzes long, resulting

turned off before activation

in restart failure.

success is prompted, which damages the BIOS program on the main control board.

Invalid activation code is

The activation code is entered

1. Check that the activation code

prompted.

improperly or the activation

entered is same to that provided

code itself is wrong.

by the factory. 2. If the activation code is entered correctly and invalid activation code is still prompted, send the machine ID, existing configurations and the configurations to be added to the factory for confirmation.

After system activation, the

The factory activation code is

Check the existing

activated functions are not

wrong. Or, the existing

configurations and the

consistent with the user ’s

configurations and the

configurations to be added again.

configurations.

configurations to be added

Request the factory to generate

which are provided for the

activation code again.

factory are not complete. Activation code file not

The activation code file is

found is prompt for USB

damaged or does not exist in

activation.

the USB device.

Activation code file error is

The activation code file is of

prompt for USB activation.

wrong information.

4-20

Re-apply for an activation code.

Re-apply for an activation code.

4.3 System Test Before the ventilator at the client end is maintained, some routine tests are required to check if the current status of the ventilator is normal. The following table lists the routine tests.

SN

Test item

Function description

Test interval

1. Check if the air flow sensor, O2 flow sensor,

1

System Check

expitatory flow sensor, pressure sensor, expiration

After each

valve, safety valve, and O 2 concentration sensor are in

service or at

good condition.

the time of

2. Check the leakage, compliance, and circuit resistance

return visit

of the system.

2

Check the

1. Check if mechanical ventilation is provided normally

After each

mechanical

and if an alarm occurs.

service or at

ventilation

2. Check if the preset values of pressure and TV are

the time of

mode

same to the measured values.

return visit

Check if the zero points of all the flow sensors and

After each

pressure sensors inside the ventilator are within normal

service or at

range so as to determine whether to zero the sensors or

the time of

replace the monitoring board.

return visit

Check the 3

sensors' zero point

Check if the measurements made by the flow sensors 4

Check the

inside the ventilator are consistent with each other.

accuracy of

Check if the measurement made by any flow sensor

flow sensors

inside the ventilator is accurate. Check the effectiveness of calibration result.

Check the 5

correctness of pressure sensors

1. Check if the measured values of the internal pressure sensors are consistent with each other. 2. Check if the measured value of each pressure sensor is correct. 3. Check the effectiveness of calibration result.

4-21

After each service or at the time of return visit

After each service or at the time of return visit

4.3.1 Syst em Check NOTE 

Before maintaining the ventilator, run system check first to test the key parts, like sensors and valves, and circuit leakage or occlusion for a basic understanding of the current status of the ventilator.

System check includes tests on the working status of air inspiration valve, O2 inspiration valve, air flow sensor, O 2 flow sensor, expiratory flow sensor, pressure sensor, expiration valve, safety valve, and O 2 concentration sensor, as well as the leakage and resistance of the ventilator. The test items are listed below:

SN

Calibration item


Requirements to pass the tests

1

O2 flow sensor test

Tests the O2 inspiration

The difference in the maximum flow

valve and O2 flow sensor to open the inspiration valve between the O2 flow sensor and O2 inspiration valve should be less than max (2 L/min, ±20%). 2

Air flow sensor test

Tests the air inspiration


valve and air flow sensor to open the inspiration valve between the air flow sensor and air inspiration valve should be less than max (2 L/min, ±20%). 3

Expiratory flow sensor

Tests the expiratory flow


test

sensor

to open the inspiration valve between the expiratory flow sensor and inspiration valve should be less than max (2 L/min, ±20%).

4

Pressure sensor test

Tests the PEEP pressure

When the expiration valve is blocked

sensor, inspiratory

under different pressures, the change

pressure sensor and

of the readings on the PEEP pressure

expiratory pressure

sensor, inspiratory pressure sensor

sensor

and expiratory pressure sensor are consistent with that of the open valve pressure. The values measured by the inspiratory pressure sensor and expiratory pressure sensor shall not deviate by 10cmH2O.

5

Expiration valve test

Tests the expiration valve

4-22

The same with the above one.

SN

Calibration item


Requirements to pass the tests

6

Safety valve test

Tests if the safety valve

The safety valve can be opened and

can be opened and

closed as controlled by the

closed as required

monitoring board and auxiliary control board.

7

O2 sensor test

Tests the O2 sensor

In 100% air environment, the measured value is between 18% and 12%; in 100% O2 environment, the measured value is between 90% and 100%.

8

Leakage (ml/min)

Calculates the pipe

When the airway pressure is between

leakage

50 and 60 cm H2O, the leakage is between 0 and 10 L/min.

9

10

Compliance

Calculates the

The measured compliance value is

(ml/cmH2O)

compliance of pipes

between 0 and 20 ml/cmH2O.

Circuit resistance

Calculates the pipe

When the flow is 60 L/min, the pipe

(cmH2O/L/s)

resistance; thus

resistance is between 0 and 20 cm

reflecting if the pipes are

H2O/L/s.

blocked For detailed information, please refer to 3.4System Test .

NOTE 

If the system check fails, you need to troubleshoot the failed test items (refer to 5Troubleshooting) and then run another system check until the system passes all the tests.

4.3.2 Check the Mechanic al Ventilati on Mod e

NOTE 

The main function of the ventilator is to provide breathing support--mechanical ventilation which complies with the doctor’s settings to the patient. The tests in this section are performed aiming to ensure that the machine is able to provide normal mechanical ventilation.



The tests can help to judge if the ventilator operates normally.

The tests are mainly checking the consistence between measurements made by the ventilator and the set value, the working status of the ventilator, and the alarms so as to determine if this ventilator operates normally. 4-23

4.3.2.1 Check Volume Control Ventilation (VCV) This test is mainly checking if the ventilator can provide volume control ventilation, including check on the control, feedback, and measurement of tidal volume, as well as correct ventilation alarms. To check VCV: 1.

Make sure that the supply pressure is normal and that the tubes in the breathing circuit are correctly connected as required for mechanical ventilation. Connect a 2 L bag, which is used as the test lung, to the Y piece in the patient circuit.

2.

Select V-A/C as the ventilation mode.

3.

Set the following combinations of TV (tidal volume) and Rate respectively: (150 ml, 15 BPM), (300 ml, 12 BPM), (600 ml, 15 BPM), and (900 ml, 15 BPM). Set others to the defaults. Record the TVi reading in each setting stablized status.

4.

Judge if the above measured data meet the following conditions: 

TV control and measurement are normal: the difference between the TVi reading and set value does not exceed 10% or 10 ml, whichever is greater.



No other ventilation failure occurs: the pressure and flow waveforms are displayed normally and no technical alarms occur.

If the above test requirements are not met, perform subsequent checks and do the test again.

NOTE 

If any errors are detected during volume control ventilation test, perform troubleshooting as per 5Troubleshooting, and do the test again until the system is normal.

4.3.2.2 Check Pressure Control Ventilation (PCV) This test is mainly checking if the ventilator can provide pressure control ventilation, including check on the control, feedback, and measurement of pressure, as well as correct ventilation alarms. To check PCV: 1.

Make sure that the supply pressure is normal and that the tubes in the breathing circuit are correctly connected as required for mechanical ventilation. Connect a 2 L bag, which is used as the test lung, to the Y piece in the patient circuit.

2.

Select P-A/C as the ventilation mode.

3.

Set the following combinations of Pinsp, Rate and PEEP respectively: (10 cmH2O, 15 BPM, OFF), (15 cmH2O, 12 BPM, 5 cmH2O), (20 cmH2O, 10 BPM, 8 cmH2O). Set others to the defaults. Record the displayed Peak and PEEP values in each setting stabilized status. 4-24

4.

Judge if the above measured data meet the following conditions: 

Pressure control and measurement are normal: the difference between the displayed Peak value and the set Pinsp value does not exceed 2 cm H 2O or 10% of the set value, whichever is greater; the di fference between the displayed PEEP value and the set value does not exceed 2 cm H2O or 10% of the set value, whichever is greater.



No other ventilation failure occurs: the pressure and flow waveforms are displayed normally and no technical alarms occur.

If the above test requirements are not met, perform subsequent checks and do the test again.

NOTE 

If any errors are detected during pressure control ventilation test, perform troubleshooting as per 5Troubleshooting, and do the test again until the system is normal.

4.3.3 Check t he Sensor Zero Poi nt NOTE 

If the zero point of the pressure sensor has an error, in ventilation status when PEEP is set to 0, the baseline of the pressure waveform is not at the zero point.



If the zero point of the inspiratory/expiratory flow sensor has an error, in ventilation status, the baseline of the flow waveform is not at the zero point.



If the zero point A/D value of any sensor is outside of the normal range, and if it can not be corrected, the monitor board must be replaced.



The zero point A/D value of the PEEP pressure sensor and expiratory pressure sensor should fall within the normal range of 920 to 2000.



The zero point A/D value of the inspiratory pressure sensor should fall within the normal range of 920 to 2000.



The zero point A/D value of the expiratory flow sensor should fall within the normal range of 100 to 1300.



The zero point A/D value of the air/O2 flow sensor should fall within the normal range of -0.5 to 1 L/min.

The test is to check if the zero points of all t he flow sensors and pressure sensors inside the ventilator are within normal range so as to determine whether to zero the sensors or replace the monitoring board. 4-25

To check the sensor zero point: 1.

Turn off all fresh gases and position the Y piece connector in the patient circuit to the air.

2.

Make sure that the system is Standby. Select [Main Menu] → [Maintain] → [Service ] → [A/D Channel]. Select [ VCM] and [ VPM] respectively. Check the actual values of

flow and pressure sensors. 3.

Make sure that the actual measured value of each sensor is close to “0” (zero). If the measured value of any sensor is larger than 0.5, you need to calibrate the sensor. Record the zero point A/D value of each sensor and judge i f the zero point falls within the normal range. If not, calibrate the corresponding sensor. For details about calibration, please refer to 4.4.5 Pressure and Flow Zeroing.

4.3.4 Check the Flow Sensor Acc uracy NOTE 

If a great deviation of TV measured value occurs, test the measurement accuracy of expiratory flow sensors so as to determine whether to perform flow calibration again. This test can also validate the effectiveness of flow calibration.

This test is mainly checking the consistency of measurement among the internal flow sensors and the accuracy of measurement of each flow sensor, as well as validating the effectiveness of flow calibration. To check the measurement accuracy of flow sensors: 1. Connect the inspiration/expiration connectors with breathing tubes, as shown below:

Gas flow Exp. port

direction

Insp. port

Hose

4-26

2.

In standby mode, select [Main Menu] → [Maintain] → [Service ] → [Diagnosis] to access the [ Valve Test] menu.

3.

Increase the value of air inspiration valve, causing the measured open valve flow to fall within the following ranges respectively: (3 ± 0.5) L/min, (10 ± 1) L/min, (20 ± 1) L/min, (30 ± 2) L/min, (60 ± 3) L/min. Record the measured flow values of the air inspiratory flow sensor and expiratory sensor in each setting stabilized status. Make sure that the deviation between the measured data of the air expiratory flow sensor and inspiratory flow sensor and that of the calibration device must not exceed max (0.5 lpm, ±5%); and that the deviation between the measured value of inspiration valve and that of the air flow sensor must not exceed max (2 lpm, ±20%).

4.

2

Check the O inspiration valve, O2 flow sensor, and expiratory flow sensor as instructed above, and make sure that the deviations fulfills the accuracy requirements.

5.

If any of the sensors fails the test, perform flow calibration again as per 4.4.2 Flow Calibration (Factory). If calibration fails, replace the corresponding sensor.

4.3.5 Check the Pressur e Senso r Acc uracy NOTE 

If a great deviation of pressure measured value occurs, test the measurement correctness of pressure sensors so as to determine whether to perform pressure calibration again. This test can also validate the effectiveness of pressure calibration.

This test is mainly checking the consistency of measurement among the internal pressure sensors and the correctness of measurement of each pressure sensor, as well as validating the effectiveness of pressure calibration.

4-27

To check the measurement correctness of pressure sensors: 1. Make sure that the pressure sampling line and calibration devices (or other pressure measurement devices) are connected in parallel, as shown below:

Inspiratory port Expiratory port

The other end connects to the calibration connector of the ventilator.

Calibration device

The other end connects to the AC power supply. Positive end of pressure sensor

2.

In standby mode, select [Main Menu] → [Maintain] → [Service ] → [Diagnosis] to access the [ Valve Test] menu.

3.

Set the open valve flow of inspiration valve to 10 L/min.

4.

Increase the pressure of inspiration valve, causing the measured value of the close valve pressure of inspiration valve to fall within the following ranges respectively: (5 ± 1) cm H2O, (20 ± 1) cm H2O, (50 ± 1) cm H2O, (70 ± 2) cm H2O, (90 ± 2) cm H 2O. Record the measured pressure values of the calibration devices, expiratory pressure sensor and inspiratory pressure sensor to which each setting corresponds respectively.

5.

Make sure that the deviation between the measured data of the expiratory pressure sensor and inspiratory pressure sensor and that of the calibration devices must not exceed max (1cmH2O, ±2%); and that the deviation between the measured value of the expiration valve and that of the calibration device must not exceed max (5cmH2O, ±20%). If not, perform calibration again as per 4.4.6 Pressure Calibration (Factory) and 0

4-28

Expiration Valve Calibration (Factory). If the ventilator fails the test after calibration,

replace the corresponding sensor.

6.

On condition that the above requirements are satisfied, make sure that the above groups of measured data shall satisfy this: the deviation between the measured value of the expiration valve (or inspiratory/expiratory pressure sensors) and that of the calibration device shall not exceed max (5cmH2O, ±20%). Otherwise, calibrate the sensor again as per 0

4-29

Expiration Valve Calibration (Factory). If the ventilator fails the test after calibration,

replace the expiration valve.

4.4 System Calibr ation NOTE 

Perform the corresponding calibration if any of the system tests described in 4.3 System Test is failed.



After replacing the monitor board, valve assemblies, or sensors, perform the corresponding calibration as described in this chapter.

The ventilator provides the function of monitoring flow, pressure, volume, and inspiratory oxygen concentration etc. When these measured values have great deviations, it is very likely that measurement offset occurs to the relevant measurement parts. In this case, you need to perform calibration again. After equipment service, such as replacing the monitor board, valve assemblies, or sensors, you need to calibrate the flow or pressure sensors. The following table lists the possible calibration items and calibration time:

SN

Calibration


Calibration time

Flow Calibration

Calibrate the expiratory flow

1. The TVi and TVe measurement

(User)

sensor, O2 inspiration valve,

deviation is great after the flow sensor

and air inspiration valve.

have been used for a long time.

item

1

2. The flow sensor is replaced. 2

Flow calibration

Calibrate the expiratory flow

1. The deviation between the inspiratory

(factory)

sensor, O2 inspiration valve,

flow sensor and the expiratory flow sensor

and air inspiration valve.

exceeds 5% of the measured value or 1

Apply pipeline air for

L/min, whichever is greater.

factory calibration of the air

2. The deviation between the inspiratory

limb. Otherwise calibration

flow sensor and the inspiration valve

may be failed because of the

exceeds 20% of the measured value or 2

condenser.

L/min, whichever is greater. 3. The inspiration valve, flow sensor, monitor board, or inspiratory or expiratory interface board is replaced.

3

Oxygen

Calibrate the accuracy of O 2

1. The measured value of the O 2 sensor has

concentration

sensor at 21% and 100%

a great deviation. The deviationexceeds

calibration

oxygen.

3% both in Air and pure O 2.

(user)

2. The O2 sensor is replaced.

4-30

SN

Calibration


Calibration time

Oxygen

Calibrate the accuracy of O 2

1. The measured value of the O 2 sensor has

concentration

sensor at 21% and 100%

a great deviation. The deviationexceeds

calibration

oxygen.

3% both in Air and pure O 2.

item

4

(factory)

2. The O2 sensor is replaced. 3. The monitor board is replaced.

5

Pressure and

Calibrate the deviation from

Pressure or flow waveforms deviates from

flow calibration

zero points of the pressure

the baseline.

(factory)

sensor and flow sensor. (You can check the value of the zero point on the factory calibration menu).

6

7

Pressure and

Calibrate the deviation from

Pressure or flow waveforms deviates from

flow calibration

zero points of the pressure

the baseline.

(user)

sensor and flow sensor.

Pressure

Calibrate the

1. The deviation between the measured

calibration

inspiratory/expiratory

value of the ventilator’s pressure sensor

(factory)

pressure sensors, and PEEP

and that of the standard pressure gauge

valve pressure sensor.

exceeds more than 2% of the reading or 1cmH2O, whichever is greater. 2. The expiration valve or pressure sensor is replaced. 3. The monitor board is replaced.

8

Expiration valve

Calibrate the expiration

1. The deviation between the control value

calibration

valve based on completed

of the ventilator’s expiration valve and the

(factory)

pressure calibration.

measured value of the standard pressure gauge (or ventilator’s inspiratory/expiratory pressure sensor) exceeds more than 20% of the reading or 5cmH2O, whichever is greater. 2. Replace the expiration valve or pressure sensor. Calibrate the expiration valve after performing pressure calibration. 3. Replace the monitor board. Calibrate the expiration valve after performing pressure calibration.

4-31

Select [Main Menu] → [Calibrate] to access the [ Calibrate] menu, where you can perform flow calibration (user), pressure and flow zeroing (user) and oxygen concentration calibration (user). Select [Main Menu] → [Maintain] → [Service], and input the required service password to enter the [Service] menu. Select [ Calibration] to perform flow calibration (factory), oxygen concentration calibration (factory), pressure and flow calibration (factory), pressure calibration (factory) and expiration valve calibration (factory).

4.4.1 Flow Calib ration (User) NOTE 

The measurements performed by the flow sensors may be affected by the environment where the sensors are used. After the sensors have been used for a long time, great deviations may occur to the measurement results and tidal volume control as well. This problem can be fixed through flow sensor calibration.



Calibrate flow sensors again after replacing sensors.



Before calibration, perform leak test of the system first and make sure that the test is passed and there is no leakage in the hoses.



During calibration, make sure that both the air and O2 supplies are connected with sufficient gas supply. Failure to do so may lead to calibration failure.



It is recommended not to connect the humidifier to the ventilator before the calibration.

This calibration is intended to calibrate the expiratory flow sensor, air inspiratory sensor, and O2 inspiratory sensor through the air inspiratory flow sensor and O2 inspiratory flow sensor of the ventilator. After the flow sensors have been used for several months, for example, three months after calibration, great deviations (more than 10% compared with the setting value) may occur to tidal volume measurement due to sensor aging or environmental factors. Or, the user replaces flow sensors. In this case, you need to re-calibrate flow sensors. You can perform user flow calibration as described below: 1.

Select [Main Menu] → [Calibrate] to access the [Calibrate] menu. Then select [Flow];

2.

Connect the hoses and insert the Y piece into the leak test plug to close the breathing circuit;

3.

Press the [Calibrate] button to start user flow calibration.

4-32

NOTE 

If measurement deviations are not corrected after multiple flow sensor calibrations, the user is recommended to replace the flow sensor and then perform calibration. If the problem persists, factory maintenance is necessary. After the problem is fixed, perform calibration and system test.

4.4.2 Flow Calibration (Factory) NOTE 

Factory flow calibration is necessary in case of replacing the monitor board, inspiratory or expiratory interface board, flow sensor, or valve assemblies.



When a great deviation is detected between the measured value of the expiratory flow sensor, inspiratory flow sensor, and inspiration valve and that of the calibration device, you need to perform factory flow calibration.



When the altitude of the ventilator changes, change the altitude setting value in the factory setup menu and then perform flow calibration (factory).




This calibration is intended to calibrate the expiratory flow sensor, air inspiratory sensor, and O2 inspiratory sensor through the air inspiratory flow sensor and O2 inspiratory flow sensor of the ventilator.

4.4.2.1 Calibration Procedures

NOTE 

Before calibration, perform leak test of the system first and make sure that the test is passed and there is no leakage in the hoses.



Before calibration, make sure that no sensor, valve, or limb related technical alarms occurred.



During calibration, make sure that both the air and O2 supplies are connected with sufficient gas supply. Failure to do so may lead to calibration failure.



Do not move or press the tubes during calibration.

To perform factory flow calibration: 1.

Select [Main Menu] → [Maintain] → [Service], and enter the required service password to access the [Service ] menu. Select [ Calibration] and then [Flow];

2.

Connect sufficient air and O2 supplies (pipeline Air and O2 supplies are required for factory calibration);

3.

Connect the breathing hoses and insert the Y piece into the leak test plug; 4-33

4.

Press the [Calibrate] button to start factory flow calibration.

NOTE 

After flow calibration, check the measurement accuracy of the flow sensors as per 4.3.4Check the Flow Sensor Accuracy.



In case of calibration failure, first fix the problem and then perform calibration again.

4.4.2.2 Commo nly-encoun tered Problems and Recommended Ac tio ns Failure

Possible cause


After

Failure message numbered [ 02] is

1. Connect or replace the gas supplies

[Calibrate] is

displayed, indicating that the air supply

to make sure that the gas pressure is

selected, no

pressure is not adequate.

between 350 and 450 kPa.

ventilation


sound is heard.

displayed, indicating that the O2 supply

Very soon, the

pressure is not adequate.

prompt message


1. Check if there is inspiration valve

of calibration

displayed, indicating calibration failure

failure as per 5.5.3.4Inspiratory valve

failure is

caused by air inspiratory limb failure.

status error. If so, replace the

displayed.


inspiration valve.

displayed, indicating calibration failure

2. If the problem persists, replace the

caused by O2 inspiratory limb failure.

monitor board.



displayed, indicating zero point error.


description


inspiration valve. 2. If the problem persists, replace the monitor board.

4-34

Failure

Possible cause


Soon after


1. Check the gas supplies to make

[Calibrate] is

displayed, indicating that the open

sure that the drive gas pressure is

selected and

valve flow of the inspiration valve fails


ventilation

to reach 105 L/min.


description

sound is heard,


the prompt


message of

inspiration valve.

calibration


failure is

monitor board.

displayed.


Replace the inspiration valve.

displayed, indicating that the maximum value cannot be found, i.e., when the inspiration valve is opened with a DA value within 1000 - 4000, no flow of 95 L/min is detected. Failure message numbered [ 06] is displayed, indicating that the minimum value cannot be found, i.e., when the inspiration valve is opened with a DA value within 200 - 2000, no flow of 1 L/min is detected. Failure message numbered [ 13] is

Replace the inspiration valve.

displayed, indicating that the air inspiration valve accuracy is low, ie., the average D/A value per L/min is less than 5. Failure message numbered [ 14] is displayed, indicating that the O 2 inspiration valve accuracy is low, i.e., the average D/A value per L/min is less than 5. Failure message numbered [ 16] is displayed, indicating that the expiratory flow sensor accuracy is low, i.e., the average A/D value per L/min is less than 5.

4-35

Replace the expiratory flow sensor.

Failure

Possible cause


After a while of


1. Restart the system and perform

calibration, the

displayed, indicating VPM

calibration again.

prompt message

communication error, i.e., no VPM


of calibration

response is received within 0.5 s.

monitor board.

failure is


1. Replace the insiration valve and

displayed.

displayed, indicating a table error that

expiratory flow sensor, and perform

more than two non-monotonic

calibration again.

calibration points are detected in the

2. If calibration fails again, replace

calibration table.

the monitor board.


1. Replace the insiration valve and

displayed, indicating VPM table error,

expiratory flow sensor, and perform

which means more than two

calibration again.

non-monotonic calibration points are

2. If calibration fails again, replace

detected in the VPM calibration table.

the monitor board.

description

4.4.3 O2% Calib ration (User) NOTE 

Calibrate the O2 sensor again when a great deviation of O2 concentration monitored value occurs or when the O2 sensor or monitor board is replaced.



Before calibration, observe if FiO2 displays numerics on the measure screen. If not, confirm that the O2 measure switch is turned on, check the O2 sensor connection line, or replace the O2 cell until measure numerics are displayed.

Perform O2% calibration again when the measured value of the O 2 sensor has a great deviation which exceeds 3% both in Air and pure O 2, or the O2 sensor or monitoring board is replaced. To perform O 2% calibration: 1.

Select [Main Menu] → [Calibrate] to access the [Calibrate] menu. Then select [O2%];

2.

Make sure that Air and O2 supplies are connected.

3.

Press the [Calibrate] button to start user O2% calibration.

4-36

4.4.4 O2 Calibr ation (Facto ry) NOTE 

Calibrate the O2% again when a great deviation of O2 concentration monitored value occurs or when the O 2 sensor or monitoring board is replaced.



Before calibration, observe if the O2 sensor displays numerics on the measure screen. If not, confirm that the O 2 measure switch is turned on, check the O2 sensor connection line, or replace the O 2 cell until measure numerics are displayed.

Perform O2% calibration again when the measured value of the O 2 sensor has a great deviation which exceeds 3% both in Air and pure O 2, or the O2 sensor or monitoring board is replaced.

4.4.4.1 Calibration Procedures To perform O 2% calibration: 1.

Select [Main Menu] → [Maintain] → [Service], and enter the required service password to access the [Service ] menu. Select [ Calibration] and then [O2];

2.

Make sure that Air and O2 supplies are connected.

3.

Press the [Calibrate] button to start factory O 2% calibration. Perform O 2% calibration first in air, and then in pure O2.

4-37

4.4.4.2 Commo nly-encoun tered Problems and Recommended Ac tio ns

Failure

Possible cause


Soon after

Failure message numbered [ 02] is displayed,

Connect or replace the air supply

the

indicating that the air supply pressure is not

to make sure that the gas supply

[Calibrate]

adequate.

pressure is in normal range.

button is


Connect or replace the O 2 supply

selected, the

indicating that the O 2 supply pressure is not

to make sure that the gas supply

prompt

adequate.

pressure is in normal range.

message of


Check the O2 sensor connection

calibration

indicating falloff of O2 sensor during O2%

and make sure it is correctly

failure is

calibration.

connected. Then perform

description

displayed.

calibration again.

After the


calibration

indicating that O2 calibration 21% sampling value

lasts for

exceeds the upper limit, i.e., the AD value is

about 3

greater than 850.

minutes, the


prompt


message of

exceeds the lower limit, i.e., the AD value is less

calibration

than 100.

failure is


displayed.


Replace the O2 sensor.

exceeds the upper limit, i.e., the AD value is greater than 2300. Failure message numbered [ 23] is displayed, indicating that O2 calibration 100% sampling value exceeds the lower limit, i.e., the AD value is less than 900. Failure message numbered [ 10] is displayed,

1. Restart the system and

indicating VPM communication error, i.e., no VPM perform calibration again. response is received within 10 s.

2. If the problem persists, replace the monitoring board.

4.4.5 Pressure and Flow Zeroing During the operation of the ventilator, pressure and flow are zeroed automatically at a specific interval. You can also zero pressure and flow manually in the factory maintenance menu. Manual zeroing can eliminate the measurement deviations caused by zero offset immediately.

4-38

4.4.5.1 Zeroing Procedures 1.

Select [Main Menu] → [Maintain] → [Service], and enter thee required service password to enter the [Service ] menu. Select [ Calibration] and then [Zero].

2.

Disconnect the ventilator from both air and O2 supplies.

3.

Disconnect the breathing tubes from the patient.

4.

Select [Paw and Flow Zero Cal.] to start manual zeroing.

5.

If pressure and flow zeroing is passed, the message [ Zeroing Completed!] is displayed. If pressure and flow zeroing is failed, the message [ Zeroing Failure! Please try again.] is displayed.

NOTE 

In case of zeroing failure, fix the problem first and then perform flow calibration.


Failure description

Possible cause


Failure message

The voltage of the three-way

Replace the three-way valve.

numbered [21] or

valve switch exceeds the

[22] is displayed.

reasonable range. [ 21] indicates error in open status and [ 22] indicates error in closed status.

Failure message

The sampling value of PEEP

Disconnect the gas supply and expel

numbered [01] is

pressure sensor fluctuates greatly

all the gas from the ventilator. Make

displayed.

after the three-way valve is

sure that the inspiratory and

opened.

expiratory ports are exposed to the

Failure message

The sampling value of expiratory

air and that no pressure is generated

numbered [02] is

pressure sensor fluctuates greatly

in flow sensors and pressure sensors.

displayed.


Perform calibration again.

opened. Failure message

The sampling value of expiratory

Disconnect the gas supply and expel

numbered [03] is

flow sensor fluctuates greatly

all the gas from the ventilator. Make

displayed.


sure that the inspiratory and

opened.

expiratory ports are exposed to the air and that no flow is generated in flow sensors and pressure sensors. Perform calibration again.

4-39

Failure description

Possible cause


Failure message

The zero point of PEEP pressure

1. Unplug the sensor sampling line

numbered [04] is

sensor is too high.

to eliminate the effects caused by

displayed.

sampling line occlusion or

Failure message

The zero point of PEEP pressure

three-way valve. Perform zeroing

numbered [05] is

sensor is too low.

again. 2. Replace corresponding sensors or

displayed. Failure message

The zero point of expiratory

valve assemblies, and then perform

numbered [08] is

pressure sensor is too high.

zeroing again. 3. If zero point error still persists,


The zero point of expiratory

the monitoring board is faulty.

numbered [09] is

pressure sensor is too law.

Replace the monitoring board.


The zero point of expiratory flow

numbered [12] is

sensor is too high.


The zero point of expiratory flow

numbered [13] is

sensor is too low.


The zeroing duration exceeds the


numbered [20] is

set time limit.

calibration again.

displayed.

2. If the problem persists, replace the monitoring board.

4.4.6 Pressure Calibration (Factory) NOTE 

Factory pressure calibration is necessary in case of replacing the monitoring board, pressure sensor, or valve assemblies.



When a great deviation is detected between the measured value of the built-in pressure sensor and that of the standard pressure measurement device, you need to perform factory pressure calibration.




This calibration is intended to calibrate the inspiratory/expiratory pressure sensors, and PEEP pressure sensor with the ventilator calibration device.

4-40


NOTE 

Before pressure calibration, make sure that the tubes are not leaky whenconnected.




1.

Select [Main Menu] → [Maintain] → [Service], and enter the required service password to access the [Service ] menu. Select [ Calibration] and then [Pressure].

2.

Connect sufficient gas supply.

3.

Remove the expiration valve core. Replace the expiratory flow sensor with expiratory flow sensor clamp.

Expiration valve core

Clamo VT50-J08(end face sealed)

Expiration flow sensor 4.

Make sure that the pressure sampling line and calibration devices (or other pressure measurement devices) are connected in parallel, as described in 4.3.5Check the Pressure Sensor Accuracy.

5.

Connect the calibration communication connector of the calibration device to that of the ventilator with the special communication cable.

6.

Zero the ventilator calibration device manually: Start the calibration device to enter the startup screen followed by sensor heating screen (waiting for approximately 5 minutes as required by the prompt message) and then the zeroing screen. Press the [ ZERO] key on the panel. After the new screen pops up, press the [ OK ] key on the panel to complete zeroing. 4-41

7.

Press [Calibrate] to start factory pressure calibration.

8.

After a successful calibration, re-place the expiration valve core and re-place the expiratory flow sensor just replaced.

NOTE 

After pressure calibration, check the measurement correctness of the pressure sensors as per 4.3.5Check the Pressure Sensor Accuracy.



In case of calibration failure, first fix the problem and then perform calibration again.


Failure

Possible cause


After [Calibrate]


Connect or replace the gas supplies to

is selected, no

displayed, indicating that the

make sure that the drive gas pressure is

ventilation sound

supply pressure is not adequate.


description

is heard. Very soon, the prompt message of calibration failure is displayed.

4-42

Failure

Possible cause


Soon after


1. Check the tube connection, and in

[Calibrate] is


case of incorrect connection, fix the

selected and the

minimum value cannot be found,

problem and perform calibration again.

ventilation sound

i.e., when the expiration valve is

2. Check if there is expiration valve

is heard, the

opened with a D/A value within

failure as per 5.5.3.5Expiratory valve

prompt message

1400-3000, no pressure of 1.5

status error. If so, replace the expiration

of calibration

cmH2O is detected.

valve.

failure is

Possible cause:


displayed.

expiration valve failure.

monitoring board.


1. Check if there is expiration valve


failure as per 5.5.3.5Expiratory valve

maximum value cannot be found,

status error. If so, replace the expiration

i.e., when the expiration valve is

valve.

closed with a D/A value within

2. Check if there is safety valve failure

2000-3800, no pressure of 90

as per 5.5.3.6Safety valve status error. If

cmH2O is detected.

so, replace the safety valve.

Possible cause: safety valve or



monitoring board.


Replace the inspiratory pressure sensor.

description

tube occlusion or

displayed, indicating that the inspiratory pressure sensor accuracy is low, i.e., the average A/D value per cmH2O is less than 10. Failure message numbered [ 18] is

Replace the expiratory pressure sensor.

displayed, indicating that the expiratory pressure sensor accuracy is low, i.e., the average A/D value per cmH2O is less than 10. Failure message numbered [ 15] is displayed, indicating that the expiration valve accuracy is low, i.e., the average D/A value per cmH2O is less than 2.5.

4-43

Replace the expiration valve.

Failure

Possible cause


After a while of


1. Check the communication connection

calibration, the

displayed, indicating a VTplus

between the ventilator and calibration

prompt message

communication error that no data

device, or reconnect the cables, to make

of calibration

is received from the calibration

sure that the communication cables are

failure is

device in 0.5 s.

correctly connected. If the problem

description

displayed.

persists, replace the communication cable. 2. Check the configuration of the calibration device, and perform calibration again if needed. 3. Restart the ventilator and calibration device, and perform calibration again. Failure message numbered [ 10] is


displayed, indicating a VPM

calibration again.

communication error that no VPM


response is received in 1 s.

monitoring board.


1. Replace the expiration valve,

displayed, indicating a table error

inspiratory pressure sensor, and

that more than two non-monotonic

expiratory pressure sensor, and then

calibration points are detected in

perform calibration again.

the calibration table.

2. If calibration fails again, replace the monitoring board.


1. Replace the expiration valve,

displayed, indicating a VPM table

inspiratory pressure sensor, and

error that more than two

expiratory pressure sensor, and then

non-monotonic calibration points


are detected in the VPM

2. If calibration fails again, replace the

calibration table.

monitoring board.

4-44

4.4.7 Expiration Valve Calibration (Factory) NOTE 

Factory pressure calibration is necessary in case of replacing the monitoring board, pressure sensor, or valve assemblies. Perform expiration valve factory calibration after factory pressure calibration is completed.



When a great deviation is detected between the control effect of the expiration valve and the setting value, you need to perform expiration valve factory calibration.

This calibration is intended to calibrate the expiration valve with the ventilator inside pressure sensor onto which pressure calibration has been performed as the calibration reference. Ventilator calibration device is not required.


NOTE 

Before expiration calibration, make sure that the tubes are not leaky when connected.




1.

Select [Main Menu] → [Maintain] → [Service], and enter the required service password to access the [Service ] menu. Select [ Calibration] and then [Exp. Valve].

2.

Connect sufficient gas supply.

3

Connect the hoses and insert the Y piece into the leak test plug to close the breathing circuit

4.

Select [Exp. Pressure Sensor] as the calibration reference.

5.

Press the [Calibrate] button to start expiration valve calibration.

4-45

NOTE 

After expiration valve calibration, check the measurement correctness of the pressure sensors as per 4.3.5Check the Pressure Sensor Accuracy.



In case of calibration failure, first fix the problem and then perform expiration valve calibration again.


Failure description

Possible cause


After [Calibrate] is

Failure message numbered [01]

Connect or replace the gas supplies to

selected, no ventilation

is displayed, indicating that the

make sure that the drive gas pressure

sound is heard. Very

supply pressure is not

is between 350 and 450 kPa.

soon, the prompt

adequate.

message of calibration failure is displayed. Soon after [Calibrate]


1. Check if the pressure sensor zero

is selected and the

is displayed, indicating zeroing

point is normal. Refer to

ventilation sound is

the pressure sensor as reference 5.5.3.1Sensor zero point error.。

heard, the prompt

is failed.

2. Calibrate again after the failure is

message of calibration failure is displayed.

eliminated. Failure message numbered [32]

1.Check if the inspiration valve is


faulty. Refer to 5.5.3.5Expiratory

inspiration valve is unable to

valve status error. If yes, replace the

open to the specified target

inspiration valve.

flow, which is 3lpm by default.

2.Perform calibration again.

If the tube leakage is great, the target flow is 6lpm. The possible cause is inspiration valve failure. Failure message numbered [09]

Check the tube connection. In case of


tube occlusion, fix the problem and

calibration zero point is wrong.


When the expiration valve is not closed and the inspiratory target flow is 3lpm or 6lpm, the pressure of pressure sensor as calibration reference exceeds 1cmH2O. The possible cause is tube occlusion.

4-46

Failure description

Possible cause



1.Check the tube connection. In case


of tube occlusion, fix the problem and

maximum value is not found.


The point of 90cmH2O cannot

2.Check if the expiration valve is

be found when closing the


expiration valve across the


range of 2000~3800.

expiration valve.

The possible cause is tube

3.Check if the safety valve is faulty.

leakage, safety valve failure, or

Refer to 5.5.3.6Safety valve status


error. If yes, replace the safety valve.

4.If the problem persists after the above actions are taken, replace the monitor board. Failure message numbered [06]




minimum value is not found.


Pressure value less than


5cmH2O cannot be found


across the range of


1400~3000DA.

expiration valve.


3.If the problem persists after the

leakage or expiration valve

above actions are taken, replace the

failure.

monitor board.





pressure is a bit high and the


resolution is not sufficient. The

expiration valve.

pressure to which the 2nd point


in the calibration table is

above actions are taken, replace the

outside the range (>10cmH2).

monitor board.

The possible cause is expiration valve failure. Failure message numbered [15] is displayed, indicating that the accuracy of expiration valve is not high enough. Namely, DA corresponding to average 1cmH2O is less than 2.5.

4-47

Replace the expiration valve.

Failure description

Possible cause


After a while of


1.Calibrate again after replacing the

calibration, the prompt

is displayed, indicating table

expiration valve.

message of calibration

error that more than two

2.Replace the monitor board if

failure is displayed.

non-monotonic calibration

calibration still fails.

points are detected in the calibration table. Failure message numbered [35]




pressure of the last calibration


point in the calibration table is


a bit low (<80cmH2O).





expiration valve.


3.Check if the safety valve is faulty. Refer to 5.5.3.6Safety valve status error. If yes, replace the safety valve.

4.If the problem persists after the above actions are taken, replace the monitor board. Failure message numbered [33]




pressure is not stable during


calibration. For any calibration


point, after 2s of pressure


stabilization (7s at the most),


the pressure fluctuation at the

expiration valve.

first and last 5s exceeds

3.Check if the safety valve is faulty.

0.5cmH2O.

Refer to 5.5.3.6Safety valve status


error. If yes, replace the safety valve.




above actions are taken, replace the monitor board.

4-48

5 Troubleshooting 5.1 Introductio n In this chapter, ventilator problems are listed along with possible causes and recommended actions. Refer to the tables below to check the ventilator, isolate and eliminate the problems. Once isolating the part you suspect defective, refer to 6 Repair and Disassembly to disassemble the equipment and repair and replace the defective part.

5.2 Technical Al arm Check Before troubleshooting the ventilator, check for technical alarm message. If an alarm message is presented, eliminate the technical alarm first. The following sections detail how to troubleshoot technical alarms related to the ventilator. For detailed information on possible causes and actions for technical alarm messages of other modules, refer to the Operator’s Manual. In the “Level” column of the following table, the default alarm level is indicated: H for high, M for medium, L for low and P for prompt message.

Alarm message

Level

Possible cause

Recommended action

RT Clock Need

L

There was no button cell

1. Replace with a new button cell.

available in the system or


the battery had no

main control board.

Reset

capacity. RT Clock Not Exist

H

Clock chip malfunction.

1. Restart the machine. 2. If the problem persists, replace the board.

IP Address Conflict

L

The IP address conflicted

1. Set the IP address again.

with the IP address within

2. If the problem persists, update the

the network.

system software code or replace the main control board.

Loading Default

L

Config. Failed

Restoring Last Config. Failed

L

There were configuration

1. Load the configuration again.

items not loaded


successfully when loading

system software code or replace the main

the default configuration.

control board.

There were configuration

1. Load the configuration again.

items not loaded


successfully during when

system software code or replace the main

restoring the last

control board.

configuration items. 5-1

Alarm message

Level

Possible cause

Recommended action

SD Storage Card

M

The storage card was

1. Install the storage card again.

damaged or the storage


card was not installed

storage card.

Error

correctly. Insp. Hold

L

Interrupted

The duration of the status

1. Check the key for failure.

of depressed Insp. Hold

2. Contact the vendor for repair if the key

key exceeded the upper

is failed.

time limit set by the system. Exp. Hold

L

Interrupted

The duration of the status

1. Check the key for failure.

of depressed Exp. Hold

2. Contact the vendor for repair if the key

key exceeded the upper

is failed.

time limit set by the system. Keyboard Comm

H

Stop

The communication cable

1. Plug the keyboard communication

between the keyboard and

cable again.

main control board was

2. Replace the keyboard communication

faulty.

cable. 3. Check if the keyboard software is correct. 4. If the problem persists, change the keyboard PCBA. 5. If the problem persists, change the main control board PCBA..

Keyboard Selftest

H

Keyboard software failure.

Error

1. Restart the machine. 2. Replace the keyboard software. 3. If the problem persists, replace the keyboard.

Ventilator Reset

H

Error

Key Error

M

The ventilator main

1. Access the factory service menu to

control board, keyboard,

check the cause of this alarm.

VCM, or VPM was reset.

2. Replace the relevant board.

Key pressing timeout.

1. Correct the doctor’s operation if the doctor presses the key too long. 2. Replace the keyboard communication cable. 3. Replace the keyboard. 4. Replace the main control board.

Memory Error

H

Memory data storage error. 5-2

Change the main control board.

Alarm message

Level

Possible cause

Recommended action

PCON2 Selftest

H

POCN2 switch error.

Replace the POCN2 switch.

Board Mismatch

H

VCM board mismatch.

Replace with matched VCM board.

Battery in Use

L

The battery was being

1. Check the AC power supply

used.

connection.

Error

2. If the AC power supply is connected normally and the voltage is normal, check the connection between the AC mains and power board and check the socket. 3. If the problem persists, replace the power board. Battery Undetected

M

No battery was installed,

1. Check if the battery voltage is normal.

or the line between the

2. Check if the cable connection is

battery and power module

normal.

was not connected.

3. Replace the battery. 4. If the problem persists, replace the power board.

System DOWN for

H

battery depletion!

The battery was faulty,

1. Connect to AC power supply. Measure

resulting in charging

the battery voltage. Check if the battery is

failure.

chargeable.

The system software

2. Check if the system software version

version did not match the

matches the current machine type. If not,

machine type.

update the system software. 3. If the problem persists, replace the power board.

Low Battery Voltage

H

The battery voltage was

1. Connect to AC power supply

too low.

immediately if the system is operational. 2. Check if the battery is normal. 3. Check if the charging circuit is normal. If charging is not possible, replace the power board.

Internal Power Supply Error

H

Board internal power

1. Measure the voltage of the

supply error.

corresponding test point. 2. If the problem persists, replace the power board.

5-3

Alarm message

Level

Possible cause

Recommended action

Air Supply Pressure

H

The Air pressure was low.

1. Check if the Air pressure switch is

Low

normal. If not, replace it. 2. Check if the Air supply is turned on or if the supply pressure is adequate. If the Air supply is not turned on or if the supply pressure is not adequate, handle the case.

O2 Supply Pressure

H

The O2 pressure was low.

Low

1. Check if the O2 pressure switch is normal. If not, replace it. 2. Check if the O2 supply is turned on or if the supply pressure is adequate. If the O2 supply is not turned on or if the supply pressure is not adequate, handle the case.

No Gas Supply

H

Pressure

The Air and O2 supply

1. Check the Air pressure switch. R eplace

pressures were low.

the switch if it is damaged. 2. Check the Air supply. If Air supply is not turned on, turn it on. If the supply pressure is not adequate, replace the gas supply. 3. Check the O2 pressure switch. Replace the switch if it is damaged. 4. Check the O2 supply.

Airway Leak?

L

The tube at patient

1. Check the tube at patient connection

connection was leaky.

for leakage. If the tube is leaky, replace it. 2. Check the flow sensor. If it is not accurate, calibrate again. 3. Check the pressure sensor. If it is not accurate, calibrate again.

Airway Obstructed?

H

The tube at patient

1. Check the tube at patient connection

connection was

for obstruction. If the tube is obstructed,

obstructed.

dredge it. 2. Check the flow sensor. If it is not accurate, calibrate again. 3. Check the pressure sensor. If it is not accurate, calibrate again.

5-4

Alarm message

Level

Possible cause

Recommended action

Tube Disconnected?

H

The tube at patient

1. Check if the tube at patient connection

connection was

is disconnected or loose. If yes, connect

disconnected.

again. 2. Check the flow sensor. If it is not accurate, calibrate again. 3. Check the pressure sensor. If it is not accurate, calibrate again.

TV Not Achieved

L

The tidal volume did not

1. Check if the tube is leaky. If yes,

reach the set value.

connect again. 2. Check the flow sensor. If it is not accurate, calibrate again. 3. Check if the parameter settings are reasonable.

Pinsp Not Achieved

L

The airway peak pressure

1. Check if the tube is leaky. If yes,

did not reach the set value.

connect again. 2. Check the flow sensor. If it is not accurate, calibrate again. 3. Check the parameter settings.

Sustained Airway

H

Pressure

PEEP Too High

H

The patient’s airway

1. Check the parameter settings.

pressure is sustained at the

2. Check the sensor. If it is not accurate,

relatively high level.

calibrate again.

PEEP is too high.

1. Check the pressure sensor. If it is not accurate, calibrate again. 2. Check the parameter settings.

Tinsp Too Long

L

In the PSV mode, the


spontaneous breathing

2. Check and replace the pressure and

could not satisfy the

flow sensors.

breathing sensitivity all the time, which caused inspiration unable to end. Ctrl Module Comm Error

H

The communication

1. Check the connector between the

between the monitoring

monitoring board and main control board.

board and main control

If the connection is not good, replace and

board was not stable.

connect again. 2. Check the monitoring module for damage. If there is damage, replace the monitoring module. 3. Check the main control board for damage. If there is damage, replace the main control board.

5-5

Alarm message

Level

Possible cause

Recommended action

Ctrl Module Comm

H

The communication

1. Check the connector between the

between the monitoring

monitoring board and main control board

board and main control

for damage. If there is damage, replace

board was interrupted.

the relevant board.

Stop

2. Check the monitoring module for damage. If there is damage, replace the monitoring module. 3. Check the main control board for damage. If there is damage, replace the main control board. 4. Check the software version for compatibility and update the software. Ctrl Module Selftest

H

Error Protection Module

H

Comm Error

Protection Module

H

Comm Stop

Monitoring module

Check and replace the monitoring

hardware failure.

module.

The communication

1. Check and replace the protection

between the protection

module.

module and main control

2. Check and replace the main control

board was not stable.

board.

The communication

1. Check and replace the protection

between the protection

module.

module and main control

2. Check and replace the main control

board was interrupted.

board. 3. Check the software version for compatibility and update the software.

Protection Module

H

Selftest Error Heating Module

Protection module

Check and replace the protection module.

hardware failure. L

Failure

Heating module hardware

Replace the heating module.

failure.

Fan Failure

M

Fan hardware failure.

Replace the fan.

Internal Temperature

M

The temperature of the

1. Check if the fan works normally. If not,

power board was too high.

replace the fan.

Too high

2. Check if the power board works normally. If not, replace the power board. Pressure Sensor Failure

H

1. The inspiratory pressure

1. Replace the inspiratory pressure sensor.

sensor was faulty.

2. Replace the expiratory pressure sensor.

2. The expiratory pressure

3. Replace the PEEP pressure sensor.

sensor was faulty. 3. The PEEP pressure sensor was faulty.

5-6

Alarm message

Level

Possible cause

Recommended action

Exp. Flow Sensor

M

The expiratory flow

1. Zero the expiratory flow sensor.

sensor was faulty.

2. Replace the expiratory flow sensor.

The O2 sensor was

1. Check if the O2 sensor is expired. If

expired or was not

yes, replace the O2 sensor.

installed.

2. Check if the O2 sensor cable is loose.

Failure O2 Sensor Failure

M

If yes, connect the cable again. Please calibrate O2

L

sensor. Air Insp. Limb

H

Failure

The O2 sensor was not

Perform 21% and 100% O2 sensor

calibrated.

calibrations again.

1. The Air inspiratory

1. Check if the inspiratory valve works

valve was faulty.

normally. If not, replace the inspiratory

2. The inspiratory flow

valve.

sensor in Air limb was

2. Check the inspiratory flow sensor.

faulty.

3. Replace the inspiratory valve or inspiratory flow sensor and calibrate it.

O2 Insp. Limb

H

Failure

1. The O2 inspiratory

1. Check the inspiratory valve. If the

valve was faulty.

valve is faulty, replace it.

2. The inspiratory flow

2. Check the inspiratory flow sensor. If

sensor in O2 limb was

the sensor is faulty, replace it.

faulty.

3. Replace the inspiratory valve or inspiratory flow sensor and calibrate it.

Ctrl Module Init

H

Error Please perform

H

pressure calibration.

The monitoring module

Check the monitoring board hardware. If

was faulty.

it is faulty, replace it.

The pressure sensor was

1. Calibrate the pressure sensor.

not calibrated.

2. Replace the monitoring module. 3. Replace the pressure sensor.

Please perform flow

H

calibration.

The flow sensor and

1. Calibrate the flow sensor and

inspiratory valve were not

inspiratory valve.

calibrated.

2. Replace the monitoring module. 3. Replace the flow sensor.

Insp. Gas Temp Too

The temperature of

1. Check the heating module. If the

High

inspiratory gas exceeded

module is faulty, replace it.

the limit.

2. Check the temperature sensor. If the

H Buzzer Failure

L

sensor is faulty, replace it. The buzzer was damaged.

5-7

Check and replace the buzzer.

Alarm message

Level

Possible cause

Recommended action

Volume Limited

L

In pressure ventilation


mode, the gas volume

2. Check the flow sensor. If the sensor is

delivered exceeded the set

faulty, replace it.

tidal volume and

3. Check if the software gives a false

expiration was switched

alarm. If yes, update the software.

to.

4. Check the monitoring module. If the module is faulty, replace it.

Nebulizer Valve

M

Failure 3-way Valve Failure

Nebulizer valve control

Check and replace the nebulizer valve.

error. M

Three-way valve control

Check and replace the 3-way valve.

error. Insp. Temperature

H

Sensor Failure

The status of inspiratory

1. Restart the ventilator.

temperature sensor was

2. Check the temperature sensor. If the

abnormal at power-on

sensor is faulty, replace it.

selftest.

3. Check the heating module. If the module is faulty, replace it.

Protection Module

H

Init Error CO2 Comm Stop

CO2 Comm Error

H

H

The protection module

Check the protection module hardware. If

was faulty.

it is faulty, replace it.

The communication

1. Check CO2 and system software

between CO2 and main

versions.

control board was

2. Check the CO2 communication cable.

interrupted.

If the cable is faulty, replace it.

The communication

Check the CO2 communication cable. If

between CO2 and main

the cable is faulty, replace it.

control board was not normal. CO2 Sensor High

L

Temp

The temperature of the

Replace the CO2 module.

sensor assembly was too high (>63℃).

CO2 Sensor Low Temp CO2 High Airway Pressure CO2 Low Airway Pressure CO2 High Barometric

The temperature of the L


sensor assembly was too low (<5℃).

L

L

The airway pressure was too high (>790 mmHg). The airway pressure was


too low (<428 mmHg). The barometric pressure

L


was greater than 790 mmHg.

5-8


Alarm message

CO2 Low Barometric

Level

L

Possible cause

Recommended action

The barometric pressure


was less than 428 mmHg.

CO2 Hardware

1. The external A/D

Error

sampling 2.5V was


abnormal/ 2. The 12V power supply voltage was abnormal. H

3. The internal A/D sampling 2.5V was abnormal. 4. The pump was abnormal. 5. The 3-way valve was abnormal.

CO2 Sampleline Occluded CO2 System Error

L L

The sampling line was


abnormal or occluded. The alarm was triggered


by multiple system errors. L

CO2 No Watertrap

The water trap was


disconnected or was not connected properly. L

EtCO2 Overrange

The parameter measured

1. Check if the measure mode is correct.

value was outside the

2. Replace the CO2 module.

measurement range (error range was counted). L

FiCO2 Overrange

The parameter measured

1. Check if the measure mode is correct.

value was outside the

2. Replace the CO2 module.

measurement range (error range was counted).

CO2 Zero Failed

L

The CO2 module was


faulty.

CO2 Init Error

H

CO2 Selftest Error

H

An error occurred during


CO2 module initialization. An error occurred during CO2 module selftest.

5-9


5.3 Pneumatic System Prob lems The pneumatic system is mainly composed of gas supply subsystem, flow control subsystem, safety valve subsystem, and expiration module. This section details possible failures regarding the pneumatic system and how to troubleshoot them.

5.3.1 Commo nly Used Equi pment and Tools The commonly used equipment and tools for troubleshooting pneumatic circuit related failures are: 1.

Commonly used tools such as cross screwdriver, Allen wrench, and ordinary wrench;

2.

1MPa test pressure gauge;

3.

Φ4 and Φ6 PU tube, Φ6 silicone tube;

4.

Y piece, 4 to 6 and 6 to 6 PU tube adapters (3106-04-06, 3106-06-00), Φ6 tee (3140-06-00), breathing tube and corresponding tube plug (3126-04-00, 3126-06-00) etc;

5.

Calibration device.

5.3.2 Gas Supp ly Subsys tem The following table lists the gas supply subsystem related failures. Failure description

Possible cause

Recommended action

The internal sealing ring of the

Replace the NORGREN

DISS/NIST connector is worn.

module inlet connector.

Collision or other cause.

Replace the filter cup.

The ON/OFF value of pressure

The setting of pressure switch

Set the ON/OFF value of

switch is not accurate.

is not accurate.

pressure switch again.

The output pressure of Air/O2

The setting of the regulator

Set the regulator output

regulator is not accurate.

output pressure is not accurate. pressure again.

The DISS/NIST connector at the gas supply inlet gets loose, resulting in leakage. The filter cup at the gas supply inlet is broken.

The ON/OFF value of pressure

Set the ON/OFF value of

Air/O2 connection selection

switch is not accurate.

pressure switch again.

valve is failed.

Air/O2 connection selection

Replace the NORGREN

valve is faulty.

module parts.

The nebulization pneumatic

Clear the occlusion or replace

resistor is occluded.

the pneumatic resistor.

The nebulization switch valve

Replace the NORGREN

is faulty.

module parts.

Nebulization is failed.

5-10

Failure description

Possible cause

Recommended action

The filter cup at Air supply

The filter cup is broken and


inlet is defective.

leaky etc. The handle at the bottom of


the filter cup is damaged. The filter cup at O2 supply

The filter cup is broken and

inlet is defective.

leaky etc. The spring pin at the bottom of



the filter cup is damaged.

5.3.2.1 Loose DISS/NIST conn ector at t he gas supp ly i nlet, result ing in leakage The following picture shows the Air/O2 connector at the gas supply inlet. The head of this connector (there are DISS and NIST specifications available) connecting the gas supply tube can rotate freely for 360 º in the vertical plane so as to adapt to the directional requirement for the gas supply tube. Therefore, sealing inside the gas supply connector is not static and the sealing ring may have the risk of leakage due to abrasion after long term of use. Because the gas supply tube connected at the front end of t his part is the starting part of ventilator gas supply, and the supplied gas is adequate and is high pressure gas not regulated by the gas supply inlet assembly, severe leakage can be judged directly through the sound while subtle leakage cannot be judged through the sound, which, however, doe not affect the effect of the ventilator and is acceptable. To confirm leakage, turn off the ventilator, connect the gas supply tubes and connect them separately to Air/O2 supplies. Rotate the two connectors and listen if there is leaky sound. If the sound is heard, it indicates leakage. Replacing the module is necessary.

The connections may have leakage. 5-11

5.3.2.2 Failure of fil ter cup at Air /O2 supply inl et The following picture shows the filter cup at Air/O2 supply inlet. For O2 filter cup, pressing the spring pin drains the water and releasing the spring pin resets automatically. For Air filter cup, water is drained by rotating the black handle at the bottom. After drainage, rotate the handle to reset (the handle is in horizontal position when reset and slight deviation is allowed). Primarily, there are two possible failures occurring to the fil ter cup: leakage and drainage failure. Generally, subtle leakage is not easily detected if not checked and will not affect the use and performance of the machine. However, if not corrected for a long time, subtle leakage can cause great leakage. When drainage failure occurs to t he filter cup at Air/O2 supply inlet, leakage is usually resulted. Such leakage is generally caused by the failure at the drainage part and will be very large. And it is easily detected when connecting the gas supply. Meanwhile, because for air filter cup, the water is drained by rotating the drainage part, if knob is broken when draining the water, reset failure or drainage failure will be resulted. To troubleshoot the failure of filter cup getting broken, replace the service part directly. To troubleshoot the failure of drainage part of the filter cup, 

For Air filter cup: if the rotary handle is broken or if horizontal sealing is not possible, replace the filter cup directly.



For O2 filter cup, if drainage failure occurs at the bottom, judge if the spring pin is damaged. If yes, replace the filter cup direclty. If the spring pin is able to move freely to reset, check if there are foreign substances at the bottom. Just clear the foreign substance. If the problem persists, replace the fitle cup directly.

Drainage spring pin (push

Drainage handle (rotate clockwise or

upward, reset automatically)

counterclockwise)

5-12

5.3.2.3 Inaccurate ON/OFF value of pressure switch The ON/OFF value of the pressure switch relates to the gas supply pressure alarm function and Air/O2 connection selection valve switching function. If the ON/OFF value of the pressure switch has great deviations, inaccurate functions can be resulted or system mistrigger can be resulted if the case becomes much worse which will cause system malfunction and endanger the patient’s life. Therefore, it is necessary to check the ON/OFF value of the pressure switch. You need to check the ON/OFF value of the pressure switch in the following typical situations: 1.

Assembly testing in case of production assembling;

2.

FQC factory inspection;

3.

Equipment service at the customer side (possible drift after long term of use;

4.

Ventilator failure, such as frequent failure of Air/O2 connection selection valve, pressure alarm malfunction (false alarm or no alarm) etc.

The primary tools necessary for checking the ON/OFF value of the pressure switch are: 1.

Gas supply (high pressure cylinder with regulator);

2.

Flathead screwdriver.

5-13

The following picture shows the pressure switch (some marks such as regulators in Air/O2 limbs, nebulization switch valve, and Air/O2 connection selection valve are given for the convenience of future description and they may not be used in t his section).

Use flathead screwdriver to turn here when adjusting the

Pressure switch (Air on the left and O2 on the right)

ON/OFF value of pressure switch

Regulator in O2 limb Nebulization switch valve

Air/O2 connection selection valve

Regulator in O2 limb Nebulization flow test point

5-14

In the above picture, pressure switch in Air limb is on the l eft side and pressure switch in O2 limb is on the right side. When checking the ON/OFF value of the pressure switch, connect high pressure cylinders with regulating function. Test the ON/OFF value of the pressure switch as follows: 1.

For pressure switch in Air limb: connect to Air supply alone and adjust the cylinder regulator. Observe that the supply gas pressure rises slowly from 150 kPa to 250 kPa through the regulator pressure gauge. During the pressure rise, listen to the pressure switch carefully. When a click is heard, record the value displayed on the pressure gauge, which represents the rising pressure ON/OFF value of pressure switch. This value is required to be 220 ±10 kPa. If the test value is outside the range, adjust using flathead screwdriver as shown in the picture. Turning clockwise decreases the ON/OFF value of pressure switch while turning counterclockwise increases the ON/OFF value of pressure switch. After completing adjustment of the ON/OFF value, do the test again. Note that the test after each adjustment must be done at the stage when the pressure rises from low to high. Do not test in the reverse order. After adjusting the rising pressure ON/OFF value of pressure switch, you need to confirm the falling pressure alarm value of pressure switch. Observe the pressure gauge. Adjust the regulator to control the supply gas pressure to fall slowly from 250 kPa. When a click is heard, record the value displayed on the pressure gauge, which represents the falling pressure ON/OFF value of pressure switch. This value is required to be not less than 180 kPa. If the value is outside the range, the pressure switch is not qualified.

2.

For pressure switch in O2 limb, the adjustment method is the same. When adjusting, you need to close the gas supply in Air limb and remove the high pressure gas through the filter in Air limb.

During the adjustment described above, if the pressure switch fails to reach the required value (220±10 kPa for rising pressure ON/OFF value and not less than 180 kPa for falling pressure ON/OFF value), it indicates that the pressure switch is damaged and the module needs to be replaced,

5.3.2.4 Inaccurate out put pressur e of Air /O2 regulator The regulator in Air/O2 limb functions to reduce the supply gas pressure and stabilize the effect of supply gas pressure fluctuation upon the rear part. After long term of use, the ventilator may have the problem of inaccurate output pressure of Air/O2 regulator. Generally, you need to check the output pressure of Air/O2 regulator in the following cases: 1.

Assembly testing in case of production assembling;

2.

FQC factory inspection;

3.

Equipment service at the customer side;

4.

Ventilator failure, such as severe drift of flow control.

5-15

The primary tools necessary for checking and adjusting the output pressure of Air/O2 regulator are: 1.

Gas supply of 400 kPa (high pressure cylinder with regulating function);

2.

Φ6 PU tube and quick-plug connector;

3.

1 MPa pressure gauge;

4.

Ordinary wrench and hexagon wrench.

Refer to the picture in the previous section. The procedures for adjusting the output pressure at the rear end of the regulator in Air limb are: 1.

Connect to the cylinder gas supply and adjust the supply gas pressure to 400±10 kPa.

2.

Connect the 1 MPa pressure gauge to the nebulization flow test point using PU tube and quick-plug connector.

3.

Open the nebulization switch valve in the valve test tool of ventilator factory service mode. Adjust the proportional valve in Air limb to produce flow of approximately 5 L/min.

4.

Observe the reading on the pressure gauge. The pressure should be between 220±5 kPa for E3 and 172±5 kPa for E5. Otherwise, adjust the regulator in Air limb.

5.

To adjust the regulator, loosen the hexagon nut facing the regulator using ordinary wrench. Adjust the plastic screw using proper hexagon wrench. Turning clockwise increases the pressure while turning counterclockwise decreases the pressure. While adjusting, observe the reading on the pressure gauge. When the pressure value reaches the requirement, tighten the hexagon nut. When tightening the hexagon nut, observe the reading on the pressure gauge. Generally, the pressure falls a bit. In this case, reserve some margin at the beginning of adjusting pressure.

The procedures for adjusting the output pressure at the rear end of t he regulator in O2 limb are similar to that in Air limb.

5.3.2.5 Failed A ir/O2 connectio n selecti on valv e or nebul ization The Air/O2 connection selection valve functions to ensure normal nebulization and PEEP control in case of single gas supply.This valve affects multiple ventilation modes and nebulization function. The nebulization switch valve functions to control the connection/disconnection of nebulization gas flow, which also affects patient therapy.

5-16

When the Air/O2 connection selection valve is failed, the function of connection selection is failed. Namely, when there is only O2 supply, nebulization and PEEP control is failed. When there is only O2 supply, nebulization switch and PEEP value are controlled through the valve test tool in the factory service mode. If there is no gas flow in nebulization and the PEEP value is always “0”, it indicates that the function of Air/O2 connection selection is failed. In this case, there are two ways to solve this problem: 1.

Refer to the previous section to confirm that the pressure switch functions normally.

2.

If both of the pressure switch function and ON/OFF value are normal, the fault goes to the Air/O2 connection selection valve. You need to replace the component.

In the precondition that the function of Air/O2 connection selection is normal, connecting Air or O2 supply alone can judge whether the nebulization function is normal. Control nebulization switch through the valve test tool in the factory service mode and connect the nebulization exhaust port to anesthesia calibration device through a PU tube to test if the nebulization gas flow is normal. To judge whether the nebulization gas flow is normal: 1.

The nebulizaton switch valve may be damaged if there is no nebulization gas flow. In this case, replace the component.

2.

Check the nebulization resistor for obstruction or replace the nebulization resistor if the nebulization gas flow is not abnormal.

5-17

5.3.3 Flow Control Subsyst em The flow control subsystem is the critical part of the ventilator to implement various ventilation modes. Its composition is relatively simple and it is mainly composed of proportional valve and inspiratory flow sensor.

5.3.3.1 Propor tio nal valve f ailure The type of large flow proportional valve which the E5 ventilator uses is WOODWARD 1350-5102. The possible failures related to this valve are that the leakage exceeds the requirement when the valve is closed and that the minimum opening flow exceeds the requirement. Troubleshoot the proportional valve related failures in the following cases: 

The leakage exceeds the requirement when the proportional valve is closed: in the valve test tool of ventilator factory service mode, the DA value of the proportional valve is set to “0”. The flow measured by the inspiratory flow sensor exceeds the specified maximum leakage requirement, which is 50 ml/min. If this is detected during unit assembly, provide proportional valve with great excitation current (DA) and then set DA value to “0” and “4095” (maximum value). Repeat for multiple times (three times recommended). Observe again if leakage is normal. Otherwise, replace the proportional valve. When replacing the proportional valves, note that the two gas channels at the bottom of the proportional valves cannot be attached with foreign substance and that the proportional valves cannot collide with each other. The distance between the two proportional valves cannot be less than 2.5 cm.



The minimum opening flow exceeds the requirement: in the diagnostic mode, the DA value of proportional valve is adjusted gradually from “0” to greater value. The minimum opening flow measured by the inspiratory flow sensor exceeds the specified requirement (such as 2 L/min). Generally, this is caused by the internal failure of proportional valve. You need to replace the proportional valve. Pay attention to the note mentioned before when replacing the proportional valve.

WOODWARD proportional valve 5-18

5.3.3.2 Inspi ratory f low s ensor data error When connecting the calibration device to the inspiratory port to measure the flow of proportional valve, if the data from the ventilator internal inspiratory flow sensor and that from the calibration device differ greatly (deviation of more than 5% when the flow is between 0-120 L/min), troubleshoot as follows: 1.

Make sure that the calibration device is within the valid calibration period. If it is out of calibration, use correct external tool.

2.

Check if the filter screen assembly (115-008652-00) at the front end of inspiratory flow sensor is normal. If not, replace the assembly. Re-do the test and check if the measurement data are within the allowable error range.

3.

If the problem persists, the inspiratory flow sensor may be failed. Troubleshoot this problem by referring to the section of hardware related failures.

Inspiratory flow sensor

5-19

5.3.4 Safety Valve Subsyst em The safety valve subsystem functions to ensure that the pressure of inspiratory limb is within the safety range, monitor O2 concentration, and support spontaneous breathing. 110 cmH2O pressure relief valve

Electromagnet

O2 sensor

The possible failure related to this assembly is O2 sensor failure. Regarding the problem of O2 sensor failure, initial judgment can be made based on the replacement cycle of the O2 sensor (once per year). If the replacement duration is relatively short and the O2 concentration detection is not accurate, you need to calibrate O2 concentration. If O2 concentration detection is still inaccurate, judge if it is caused by O2 sensor failure. The judgment methods are: 1.

Open the Air proportional valve alone and wait for O2 concentration measured value to become stable. Check if the O2 concentration is 21% (subtle deviation is allowed). If not, it indicates that the O2 sensor is failed. You need to replace the O2 sensor. If yes, continue with the following step.

2.

Open the O2 proportional valve alone and wait for O2 concentration measured value to become stable. Check if the O2 concentration is 100% (subtle deviation is allowed). If yes, it indicates that the O2 sensor is not damaged. If not, replace the O2 sensor.

To replace the O2 sensor, remove the connection cable at the t ail directly. Remove the O2 sensor. Then install the new O2 sensor. When installing the new O2 sensor, tighten it properly to prevent damage or overtightness, causing inconvenience to the future service.

5-20

5.4 Hardware and Electrical Syst em Probl ems Failure description

Possible cause

Recommended action

At startup, the operational

The AC power supply is not

Check and make sure of the

indicator lamp, AC indicator

connected and the battery capacity

correct connection of the AC

lamp, and the battery

is not sufficient.

power supply.

indicator lamp are not lit and

The fuse of the AC mains inlet is

Replace the fuse. If the problem

there is no screen display

burned out and the battery capacity

persists, it indicates that the

available. Namely, the

is insufficient.

machine is internally short

ventilator fails to start up.

circuited. The display cable (at the


motherboard or the main unit

reliable connection of the cable.

external connector) is disconnected

Make sure that the captive

or is not reliably connected.

screw is in tightened status.

The cable related to power switch is


disconnected or is not reliably


connected. The AC-DC board hardware circuit

Replace the AC-DC board.

failure causes no 15.2V output and insufficient battery capacity. At startup, the AC indicator

The DC-DC board hardware circuit

lamp and battery indicator

failure causes no DC current output

lamp are lit while the

of 5V, 3.3V, 7V, and 12V.

Replace the DC-DC board.

operational indicator lamp is not lit. There is no screen display available. There is no screen display

The inverter connection lines


available (black screen).

(including the inverter input line


and output line) are disconnected or are not reliably connected. The inverter is damaged.

Replace the inverter.

The main control board hardware

Replace the main control board.

failure causes the backlight enable signals to output invalid level. The main control board software

Update the main control board

failure causes the backlight enable

software.

signals to output invalid level. The LCD is damaged.

5-21

Replace the LCD.

Failure description

Possible cause

Recommended action

There is no screen display

The display cable (at the LCD) is


available (white screen).



connected. The main control board hardware failure causes no


3.3V output or

output error. The LCD is damaged.

Replace the LCD.

There is screen display

The display cable (at the LCD) is


available but there is color



error displayed (screen

connected, which causes the loss of

blurred).

some color signals.

The screen brightness cannot

The DC-DC board hardware failure

be adjusted.

causes the backlight brightness

Replace the DC-DC board.

adjustment signals unable to output normal signals. The main control board hardware


failure causes the backlight brightness adjustment signals unable to output normal signals.

The inverter connection lines


(including the inverter input line


and output line) are disconnected or are not reliably connected. The inverter is damaged.

Replace the inverter.

The alarm indicator lamp is

The display cable is disconnected or


not lit.

is not reliably connected.


The alarm lamp board connection


line is disconnected or is not


reliably connected. The main control board hardware


failure causes failure to output normal alarm lamp control signals. The alarm lamp board hardware

Replace the alarm indicator

failure causes failure to drive the

lamp board.

alarm lamp.

5-22

Failure description

Possible cause

Recommended action

Key failure.

The key related connection line is




connected. The key control board hardware

Replace the key control board.

failure causes failure to respond to key input information. Rotary encoder failure

The encoder board connection line


is disconnected or is not reliably


connected. The rotary encoder is damaged.

Replace the rotary encoder.

The key control board hardware

Replace the button control

failure causes failure to respond to

board.

rotary encoder input information. Touchscreen failure.

The touchscreen related cable is




connected. The key control board hardware

Replace the button control

failure causes failure to respond to

board.

touchscreen input information.

Speaker failure.

The touchscreen is damaged.

Replace the touchscreen.

The speaker related cable is




connected. The main control board hardware


failure causes failure to output normal speaker drive signals. The speaker is damaged.

5-23

Replace the speaker.

5.5 Troublesho ot Sensor and Valve Related Failures by Using the Valve Test Too l 5.5.1 Preparations before Using t he Valve Test Tool Make the following preparations before using the valve valve tool to locate the sensor or valve related failures: 1

Connect the pneumatic circuit according to the type of sensor or valve to be checked. 

Constant-flow connection method: Connect the tubes of the ventilator following the constant-flow connection method to check the flow sensors and inspiratory valve. For details, refer to 4.3.4Check the Flow Sensor Accuracy.



Constant-pressure connection method: Connect the tubes of the ventilator following the constant-pressure connection method to check the pressure sensors and expiratory valve. For details, refer to 4.3.5Check the Pressure Sensor Accuracy.

2.

Make sure that the supply gas pressure is normal.

3.

When the system is Standby, select the Menu key and then select [Maintain >>] → [Service >>] → [Diagnosis >>] to access the [ Valve Test] menu.

5.5.2 Correspond ence between t he Sensor s & Valves on the Valve Test Screen and t he Components To troubleshoot the sensors or valves related failures by using the valve test tool, you must be familiar with the correspondence between the menu options on the valve test tool screen and the actual pneumatic circuit and hardware components.

5-24

5.5.2.1 Corr espondence wi th Pneumatic Components The following picture shows the correspondence between the sensors & valves on the valve test tool screen and the actual components in the pneumatic circuit diagram.

5-25

5.5.2.2 Correspond ence wit h Hardware Compo nents The following pictures show the actual sampling line connections of the sensors.

Inspiration module interface board

Inspiratory pressure sensor

Inspiratory pressure sampling line

Inspiratory module pneumatic and hardware connections

5-26

Low-pressure end of expiratory flow differential pressure

PEEP pressure sensor Expiration module interface board Expiratory flow sensor

Expiratory pressure sensor

High-pressure end of expiratory flow differential pressure Expiratory module pneumatic and hardware connections

5-27

5.5.3 Troubleshoo ting Method s Usin g Valve Test Tool By using the valve test tool, you can troubleshoot the problems related to: 

Sensor zero point



Sensor sampling line connection



Sensor calibration data



Inspiratory valve status



Expiratory valve status



Safety valve status

5.5.3.1 Sensor zero poi nt error By using the valve test tool, you can easily detect if the zero points of all the pressure and flow sensors of the ventilator are normal. To diagnose sensor zero point error: 1.

Disconnect all gas supplies. Disconnect the patient from the tubes. Make sure that the pressure and flow sensors are in the zero point environment.

2.

Check the actual measured values of all sensors in the valve test menu. If the actual value is greater than “0.5”, it indicates that this sensor requires zeroing.

3.

If the actual measured values of all sensors near “0”, check their zero point AD values. If the zero point AD value of some sensor is outside the valid range, it indicates that this sensor is faulty. You need to replace the sensor. After replacing the faulty sensor, perform zeroing again. If the zero point AD value of the sensor is still outside the valid range, it indicates that the monitoring board is faulty. You need to replace the board.

NOTE 

For the normal range of sensors’ zero points, refer to 4.3.3Check the Sensor Zero Point.

5-28

5.5.3.2 Sensor sampl ing l ine conn ection err or The expiratory flow sensor has two sampling lines. Generally, connection error can be: 

Two sampling lines are connected reversely;



One sampling line is not connected;



Two sampling lines are not connected.

The pressure sensor has one sampling line. Generally, connection error can be: 

The sampling line is not connected;



The sampling line is not correctly connected.

By using the valve test tool, you can detect if the sensor sampling lines are connected normally. 

To diagnose the sampling line connection error of expiratory flow sensor:

1.

Make sure that the gas supplies are normal. Access the valve test menu.

2.

Increase the DA setting of the inspiratory valve gradually (open inspiration valve flow to 10L/Min). The AD value of the flow sensor should also increase. With the gradual increase of gas supplied, 

If the AD value of one flow sensor decreases gradually, it is possible that the two sampling lines of the flow sensor are connected reversely.



If the AD value of one flow sensor nears zero point and keeps unchanged, it is possible that the two sampling lines of the flow sensor are not connected or the sampling line at the high pressure end is not connected.



If the low pressure end of the flow sensor is not connected, the AD value of the flow sensor cannot help judgment of this situation. Disassemble the machine for inspection when necessary.

3.

If sensor sampling line connection error is detected, re-connect the sampling lines by referring to the pneumatic connection process and make sure of connection correctness following this above described method.



To diagnose the sampling line connection error of pressure sensor:

1.

Make sure that the gas supplies are normal. Access the valve test menu.

2.

Increase the DA setting of the expiratory valve gradually. Check if the AD values of expiratory pressure sensor and PEEP pressure sensor also increase. 

If the AD value of one pressure sensor decreases gradually, it is possible that the sampling line of the pressure sensor is connected incorrectly.



If the AD value of one pressure sensor keeps unchanged, it is possible that the sampling line of the pressure sensor is not connected.

3.

If sensor sampling line connection error is detected, re-connect the sampling line by referring to the pneumatic connection process and make sure of connection correctness following this above described method. 5-29

5.5.3.3 Sensor calibr ation data error After confirming that both the sensor zero point and sampling line connection are normal, you can judge the accuracy of sensor calibration data by checking the calibration table. 

To diagnose the calibration data error of flow sensor: 

Select [Service] to access [ Cal. Data] menu. Check [ Air Flow] and [O2 Flow] factory calibration data and user calibration data respectively.



For [Flow], the maximum value in the factory calibration data table should be greater than 95 L/min and that in the user calibration data table should be greater than 60 L/min.



In the [Flow] calibration data, Air/O2 flow, AD value of expiratory flow, AD value of VPM expiratory flow, and DA value of inspiratory valve should all be in descending tendency.





If the calibration table does not satisfy the above requirement, do flow calibration.

To diagnose the calibration data error of pressure sensor: 

Select [Service] to access [ Cal. Data] menu. Check [ Pressure] factory calibration data.



The maximum value in the [ Pressure ] factory calibration data should be greater than 90 cmH2O.



In the [Pressure ] Calibration data, pressure, AD value of PEEP pressure, AD value of expiratory pressure, AD value of VPM inspiratory pressure, AD value of VPM expiratory pressure, and DA value of expiratory valve should all be in ascending tendency.



If the calibration table does not satisfy the above requirement, do pressure calibration.

5.5.3.4 Inspi ratory valve status error By using the valve test tool, you can check if the working status of inspiratory valve is normal. 1.

In the [Valve Test] menu, set the DA value of inspiratory valve to “0”. If the measured values of inspiratory flow sensor, expiratory flow sensor, and standard equipment are all greater than 1 L/min, it indicates that the inspiratory valve cannot be fully closed or that there is some problem with the valve drive circuit.

2.

In the [Valve Test] menu, gradually increase the opening of inspiratory valve (increase flow setting value). If all the measured values of inspiratory flow sensor, expiratory flow sensor, and standard equipment do not change much and that gas flow felt at the expiratory port is also very small, it indicates that the inspiratory valve is faulty or that there is some problem with the valve drive circuit.

5-30

3.

If the flow measured measured by the standard standard flow measurement device still fails to reach 105 L/min when the DA value is set to more than “4000”, flow calibration is failed. In this case, you need to replace the inspiratory valve or monitoring board.

4.

To locate if this is problem with the valve drive circuit, circuit, you can check check the status values values of Air valve and O2 valve in the [ Valve Test] menu. With the increase of DA value, the status current sampling values of Air valve and O2 valve should also increase. Besides, when the inspiratory valve control DA value is adjusted above “4000”, its status current sampling value should be 100 to 160 mA for VT50 and 250 to 600 mA for VT30. Otherwise, it indicates that there is some problem with the valve drive circuit of inspiratory valve.

5.

After replacing replacing the inspiratory valve or monitoring board, board, you can check check if the problem problem is fixed using the same method.

5.5. 5.5.3. 3.5 5 Expiratory valve status error By using the valve test tool, you can check if the working status of expiratory valve is normal. 1.

Make sure that the gas supplies are normal. normal. Access Access the valve test menu and set the inspiratory valve opening flow to 10 L/min.

2.

Set the DA value value of expiratory valve to 0. If the measured measured values of inspiratory inspiratory pressure pressure sensor, expiratory pressure sensor, and standard equipment are all greater than 1 cmH2O, it indicates that the expiratory valve is faulty or that there is some problem with the valve drive circuit.

3.

Gradually increase the pressure pressure setting setting value of expiratory expiratory valve. The The measured measured value of expiratory pressure sensor (and the connected ventilator calibration device) also increases. If the measured values of expiratory pressure sensor and standard equipment do not change much, it is possible that the expiratory valve is faulty or the sampling line is disconnected, or that there is some problem with the valve drive circuit.

4.

Note that there is a non-response non-response area area for the expiratory expiratory valve when the DA value is relatively small (less than “2000”). When the DA value is less than this area, the expiratory valve may not open and the output is “0” continuously. When the DA value exceeds this area, the output increases with the increase of DA value.

5.

To locate if this is problem with the valve drive circuit, circuit, you can check check the status value of expiratory valve in the [Valve Test] menu. With the increase of DA value, the status current sampling value of expiratory valve should also increase. Besides, when the expiratory valve control DA value is adjusted above “4000”, its status current sampling value should be 250 to 350 mA. Otherwise, it indicates that there is some problem with the valve drive circuit of expiratory valve.

6.

After replacing replacing the expiratory valve or monitoring board, board, you can check check if the problem problem is fixed using the same method.

5-31

5.5.3.6 Safety valve status error There is some risk when the safety valve cannot be opened (namely, always closed). The ventilator cannot perform normal mechanical ventilation when the safety valve cannot be closed (namely, always opened). By using the valve test tool, you can check if the safety vale can be opened or closed normally. 1.

Make sure sure that the gas supplies are normal. Access the valve test menu. menu.

2.

Set the status of safety valve valve to ON and you can hear hear a subtle click. click.

3.

Set expiratory expiratory valve pressure to 50 cmH2O and inspiratory inspiratory valve opening flow flow to 5 L/min. Check the actual measured values of expiratory flow sensor and expiratory pressure sensor, both of which should near “0” (less than “0.5”).Otherwise, “0.5”).Otherwise, it indicates indicates that the safety valve cannot be opened normally.

4.

Based on the above operations, set the status of safety valve to OFF. Then, the measured value of expiratory flow sensor will near that of inspiratory flow sensor. The measured value of expiratory pressure sensor will near the expiratory valve opening pressure. Otherwise, it indicates that the safety valve cannot be closed normally.

5.

If safety valve control control error is found, it is possible that there is some problem problem with the drive voltage of safety valve. You can check the status value of safety valve in the valve test menu. When the safety valve control is OFF, it s status voltage value should be “0V”. When the safety valve control is ON, its status voltage value should be about “1.7V”. Otherwise, it indicates that there is some problem with the valve drive circuit of safety valve.

6.

If the safety valve valve is faulty, replace replace the safety safety valve assembly. After After replacing replacing the safety valve assembly, you can check if the problem is fixed using the same method.

5-32

6 Repair epair and Disassembly WARNING 

To help prevent fires, only use lubricants approved for ventilator or O2 equipment.



Do not use lubricants that contain oil or grease. They burn or explode in high O2 concentrations.



Obey infection control and safety procedures. procedures. Used equipment may contain blood and body fluids.



Movable parts and removable components may present a pinch or a crush hazard. Use care when moving or replacing system parts and components.



Use care when disassembling the parts with sharp edges to avoid cuts.



Pay attention to the screws during the disassembly to prevent screws from falling into the inside of the equipment. equipment. Failure to do so may cause short circuit.



Make sure to bleed gas pressure before disassembling disassembling pneumatic fittings to avoid personal injury caused by high pressure gas.

NOTE 

When re-assembling, inspect all parts for deterioration. deterioration. Replace them if necessary. Use appropriate screws and parts.



After repairs are completed or parts replaced, refer to 3 Checkout and Test to perform the checkout procedure.

6-1

6.1 6.1 Prepare Prepare for Disassembl y 6.1.1 Tools During parts disassembling and replacing, the following tools may be required: 

Metric Allen wrench (2.5#, 3#, 4#, 5#)



Phillips screwdriver



Diagonal pliers



Flathead screwdriver



Metric M3 and M4 socket screwdriver



Adjustable wrench



Tweezers

6.1. 6.1.2 2 Preparatio ns Before disassembling the ventilator, do the following: 

Make sure that the ventilator is already turned off and t hat the ventilator is disconnected from AC power supply and backup battery.



Remove all the accessories connected to the ventilator.



Disconnect pipeline and cylinder gas supply connections.



Prepare the tools required for dis assembly.



Wear antistatic gloves or hand rings when removing the boards.



Maneuver the ventilator to an appropriate location and then step down the caster brake (cart configured) to fix the ventilator.

CAUTION The internal parts may be contaminated during long-term use of the equipment. Wear special gloves during disassembling and inspecting.

6-2

6.2 Disassemble the Assembli es 6.2.1 Remove the Ventilator Power Assembly Take out the two screws as shown below. Hold the handle to pull out the ventilator power assembly.

6.2.2 Remove the AC-DC Power Board and DC-DC Power Board 1.

After removing the ventilator power assembly. Remove the three screws on the power assembly as shown below.

6-3

2.

Remove the two screws fixing the AC-DC power board. Disconnect the connection line to remove the AC-DC power board. Remove the two screws fixing the DC-DC power board. Disconnect the connection line to remove the DC-DC power board. Screw

DC-DC power board

AC-DC power board

Screw

6.2.3 Remov e the Fan 1.

Remove the four sunk screws fixing the power panel. Disconnect the connection line to pull out the power box panel assembly.

2.

Remove the four screws fixing the fan as shown below to remove the fan.

6-4

6.2.4 Remove th e Main Contr ol Board, Monito ring Board, Extension Bo ard, and Lithium Battery 1.

Remove the air filter for the module rack. Remove the four screws fixing the rear cover of module rack as shown below.

Air filter

2.

Take out the PCB disassembling tool. Pull out the main control board, monitoring board, extension board with the PCB disassembling tool. Take out the lithium battery. VT50 monitoring board

VT50 extension board VT50 main control board

PCB disassembling tool

Lithium battery

6-5

Install the PCB disassembling tool onto the board holes to remove the board.

6.2.5 Remove the O2 Sensor 1.

Open the O2 sensor door.

2.

Pull out the O2 sensor connection line to remove the O2 sensor.

O2 sensor door

6-6

O2 sensor

6.2.6 Remove the Expiration Valve Assembly Release the buckle to remove the expiration valve assembly.

Expiration valve

Buckle

assembly

6.2.7 Remove the Flow Sensor Assembly 1.

Do as the step described in 6.2.6Remove the Expiration Valve Assembly.

2.

Pull out the flow sensor assembly from the expiration valve assembly.

Flow sensor assembly

6-7

6.2.8 Remove the Expiration Valve Diaphragm Assembly 1.


2.

Remove the expiration valve cover to take out the expiration valve diaphragm assembly. Expiration valve diaphragm assembly

Remove the expiration valve cover

6.2.9 Remov e VT50 Kernel Assembly 1.

Do as the step described in 6.2.6Remove the Expiration Valve Assembly. 2.

Remove the screws on the power cord fixed plate to remove the fixed plate.

3.

Remove the power leadin connecting the power box.

4.

Remove the screw for the display connection line connector to remove the display connector.

5.

Remove the four screws fixing the kernel assembly to pull out the kernel assembly.

Screw

Power cord fixed plate

Screw

Remove the connector for the display connection line

6-8

Remove the power leadin

6.2.10 Remov e VT30 Kernel A ssembly 1.


2.

Remove the screws on the power cord fixed plate to remove the fixed plate.

3.

Remove the power leadin connecting the power box.

4.

Remove the four screws fixing the kernel assembly to pull out the kernel assembly.

Screw

Screw Power cord fixed plate

Remove the power leadin 5.

Remove the screw for the display connection line connector to remove the display connector. Pull out the kernel assembly.

Remove the connector for the display connection line

6-9

6.2.11 Remove the Gas Supply Contro l A ssembly 1.

Remove the kernel assembly following 6.2.9 or 6.2.10.

2.

Remove VT50 inspiratory interface board connection line which connects the inspiration module.

3.

Disconnect the hose connecting the gas supply control assembly.

VT50 inspiratory interface board connection line 4.

Disconnect the hose

Remove the five screws fixing the gas supply control assembly. Pull backward and then lift the gas supply control assembly and safety valve gas reservoir assembly.

Screw

Screw

6-10

6.2.12 Remove th e Expi ration Valve Seat As sembl y 1.


2.

Disconnect the hose connecting the expiration valve seat assembly.

3.

Remove the four screws fixing the expiration valve seat assembly and pull forward to remove the expiration valve seat assembly.

Disconnect the hose

Screw

6-11

6.2.13 Remov e the Filters 1.


2.

Disconnect the hoses connected to the filters to remove the filters. There are three filters in total.

6.2.14 Remove the Safety Valve Gas Reservoir Assembly 1.


2.

Remove the four screws fixing the safety valve gas reservoir assembly.

3.

Disconnect the relevant cable and hose. Pull forward to remove the safety valve gas reservoir assembly.

6-12

6.2.15 Remove the Inspiration Module Board 1.


2.

Disconnect all the cables and hoses connecting the inspiration module board.

3.

Remove the five screws fixing the inspiration module board to remove the board.

6.2.16 Remove t he Flow Sensor 1.

Do as the step described in 6.2.14Remove the Safety Valve Gas Reservoir Assembly.

2.

Disconnect the connection line for flow sensor.

3.

Pull out the flow sensor.

VT50 kernel VT30 kernel

Air flow sensor

Air flow sensor

O2 flow sensor

6-13

O2 flow sensor

6.2.17 Remove th e Propor tional Valve 1.

Do as the step described in 6.2.16Remove the Flow Sensor.

2.

Disconnect the cable connecting the proportional valve.

3.

Remove the four screws fixing the proportional valve and remove the proportional valve.

6.2.18 Remove th e Pneumati c As sembl y 1.

Do as the step described in 6.2.16Remove the Flow Sensor.

2.

Disconnect the cables and hoses connecting the pneumatic assembly.

3.

Remove the four screws fixing the board fixed mount for the pneumatic assembly to remove the fixed mount

6-14

4.

Remove the five screws fixing the pneumatic assembly and remove the pneumatic assembly.

6.2.19 Remove the 110 cmH2O Pressure Relief Valve As semb ly 1.


2.

Remove the 110 cmH2O pressure relief valve assembly from the safety valve seat assembly.

110 cmH2O pressure relief valve assembly

6-15

6.2.20 Remov e the Safety Valve As sembl y 1.


2.

Remove the four screws fixing the safety valve.

3.

Disconnect the connection lines.

4.

Remove the silicone tube and remove the safety valve assembly.

Silicone tube

6.2.21 Remove the Three-way Valve and Conn ectio n Line 1.


2.

Remove the two screws fixing the three-way valve and connection line.

3.

Disconnect the relevant cable and hose and remove the three-way valve and connection line.

Three-way valve and connection line

6-16

6.2.22 Remove the 10 cmH2O Pressure Relief Valve 1.


2.

Remove the two screws fixing the fixed plate for pressure relief valve. Remove the fixed plate.

3.

Take out the 10 cmH2O pressure relief valve. Check valve diaphragm

Fixed plate for pressure relief valve

6-17

10 cmH2O pressure relief valve

6.2.23 Remov e the Electr omagn et 1.

Do as the step described in 6.2.20Remove the Safety Valve Assembly.

2.

Remove the four screws for electromagnet and pull out the electromagnet with effort.

Electromagnet

6.2.24 Remove th e Safety Valve Diaphragm A ssembly 1.

Do as the step described in 6.2.23Remove the Electromagnet.

2.

Remove safety valve cover and remove the safety valve diaphragm assembly.

Safety valve cover

Safety valve diaphragm

6-18

6.2.25 Remov e the Safety Valve Seat A ssembly 1.

Do as the step described in 6.2.14Remove the Safety Valve Gas Reservoir Assembly.

2.

Do as the step described in 6.2.20Remove the Safety Valve Assembly .

3.

Disconnect the connecting hose.

4.

Remove the four screws fixing the safety valve seat assembly and remove the safety valve seat assembly.

6.2.26 Remove th e Gas Reservoir Assembl y 1.

Do as the step described in 6.2.25Remove the Safety Valve Seat Assembly.

2.

Remove the six screws fixing the sheet metal for safety valve assembly and remove the gas reservoir assembly.

6-19

6.2.27 Remove the O2 Sensor Transitional Part 1.

Do as the step described in 6.2.26Remove the Gas Reservoir Assembly .

2.

Pry up the O2 sensor press plate for O2 sensor transitional part. Take out the O2 sensor transitional par.

O2 sensor transitional part

O2 sensor press plate

6.2.28 Remove VT50 Expir ation Module Board PCBA 1.

Do as the step described in 6.2.12Remove the Expiration Valve Seat Assembly .

2.

Disconnect the hoses and cables connecting the VT50 expiration module board PCBA.

3.

Remove the four screws fixing the VT50 expiration module board PCBA. Take out the VT50 expiration module board PCBA.

6-20

6.2.29 Remov e VT50 Heatin g Plate Ass embly 1.


2.

Remove the four screws fixing the heating plate fixed plate. Take out the fixed plate.

3.

Disconnect the relevant cable and remove the VT50 heating plate assembly.

Screw

VT50 heating plate assembly

6-21

6.2.30 Remov e the Three-Way Valve Assembly 1.

Do as the step described in 6.2.12Remove the Expiration Valve Seat Assembly.

2.

Disconnect the hoses and cables connecting the three-way vale assembly.

3.

Remove the two screws fixing the three-way valve assembly and remove the three-way valve assembly. Three-way valve assembly

6.2.31 Remove the Expiratory Flow Sensor Seat Assembly 1.


2.

Disconnect the hoses and cables connecting the expiratory flow sensor seat assembly.

3.

Remove the two screws. Remove the expiratory flow sensor seat assembly. Expiratory flow sensor seat assembly

6-22

6.2.32 Remove the Three-way Valve and Conn ectio n Line 1.


2.

Disconnect the hoses and cables connecting the three-way valve connection line.

3.

Remove the two screws and remove the three-way vale and connection line. Three-way vale and connection line

6.2.33 Remove VT50 Expi ration Valve and Conn ection L ine 1.


2.

Disconnect the hoses and cables connecting the expiration valve connection line.

3.

Remove the two screws and remove the expiration valve and connection line.

Expiration valve and connection line

6-23

6.2.34 Remov e the Muffl er 1.


2.

Remove the muffler with wrench.

6.2.35 Remove the PEEP Valve Seat Assembly 1.


2.

Disconnect the hoses and cables connecting the PEEP valve seat assembly.

3.

Remove the six screws and remove the PEEP valve seat assembly.

PEEP valve seat assembly

6-24

6.2.36 Remove the Expiration Valve Locking Bar 1.


2.

Remove the two screws and remove the expiration valve locking bar.

Expiration valve locking bar

6-25

6.2.37 Remove VT50 Display Front Housing Assembly 1.

Loosen the two screws fixing the display cable connector from the main unit. Unplug the display cable connector.

2.

Open the wire-wound cover on the display rear housing. Unwind the twisting display cable.

3.

Remove the eight screws fixing the front and rear housings. Separate the display front housing assembly from the bottom.

Unwind the twisting cable

Display cable connector 4.

Remove the display cable connector from the display front housing assembly. Remove the screw fixing the display cable and pull out the display front housing assembly (this step is not performed if LCD is not to be replaced).

5.

When re-assembling, wind the display cable counterclockwise as per the arrow shown on the rear housing.

6-26

6.2.38 Remove VT30 Display Front Housing Assembly 1.

Remove the four screws fixing the front and rear housings. Separate the display front housing assembly from the bottom.

2.

Remove the display cable connector from the display front housing assembly. Pull out the display front housing assembly (this step is not performed if LCD is not to be replaced).

AU display

LG display

6-27

6.2.39 Remov e the Key Main Board 1.

Remove the display front housing assembly following 6.2.37 or 6.2.38.

2.

Disconnect the cables connecting the key main board.

3.

Remove the seven screws fixing the key main board and remove the key main board.

VT30 display front housing assembly


6-28

6.2.40 Remove the Speaker 1.


2.

Disconnect the cables connecting the speaker.

3.

Remove the two screws fixing the speaker and remove the speaker.



6-29

Speaker cable leading-out position

VT50 display speaker cable leading-out mode 4.

VT30 display speaker cable leading-out mode

When assembling the VT50 display assembly, wind the speaker and its connection line around the bolt which fixes the speaker counterclockwise for one circle and then insert them into the key control board.

5.

When assembling the VT30 display assembly, wind the speaker connection line around the speaker counterclockwise for two circles and then insert it into the key control board.

6.2.41 Remov e the Inverter 1.


2.

Disconnect the cables connecting the inverter.

3.

Remove the two screws fixing the inverter and remove the inverter.


6-30


6.2.42 Remov e the Alarm Lamp B oard 1.


2.

Disconnect the cables connecting the alarm lamp board.

3.

Remove the two screws fixing the alarm lamp board and remove the alarm lamp board.


6-31


6.2.43 Remove the Display Bracket Assembly 1.


2.

Disconnect the encoder connection line, power switch connection line, and connection lines for left and right key boards.

3.

Remove the five screws fixing the display bracket assembly and remove the display bracket assembly.


6-32


6.2.44 Remove VT50 Key Scann ing B oard PCBA 1.

Do as the step described in 6.2.43Remove the Display Bracket Assembly.

2.

Remove the eight screws fixing the key scanning boards (four screws for each board) and remove the left and right VT50 key scanning board PCBAs.

VT50 key scanning board (right) PCBA

VT50 key scanning board left PCBA


6-33


VT50 key scanning board (left) PCBA


6.2.45 Remov e VT50 Power Swit ch Board PCBA 1.


2.

Remove the two screws fixing the power switch board and remove the VT50 power switch board PCBA.

6-34

6.2.46 Remove the Copper Axis Encoder Board 1.

Do as the step described in 6.2.43Remove the Display Bracket Assembly .

2.

Remove the two screws fixing the encoder mounting plate. Remove the copper axis encoder board and encoder mounting plate.

6.2.47 Remove th e Touch scr een 1.

Do as the step described in 6.2.44Remove VT50 Key Scanning Board PCBA .

2.

Remove VT50 key scanning board (left) PCBA and remove the touchscreen.

Touchscreen

6-35

6.2.48 Remov e th e Displ ay 1.


2.

Remove the four screws fixing the display.

3.

Disconnect the relevant cable and remove the display.

12.1" display

10.4" display (AU)

6-36

10.4" display (LG)

6.2.49 Remov e the Main Unit Handl e Remove the four screws fixing the main unit handle. Remove the handle and handle connection post.

VT50 enclosure

VT30 enclosure

6-37

6.2.50 Remove the Filter Water Trap at Gas Supply Inlet Remove the filter water trap from the main unit. Pay attention to the sealing ring on the water trap. When re-assembling, install the water trap, which is same for VT50 and VT30.

Filter water trap

6-38

6.2.51 Remove th e Auxil iary Output Ass embly Remove the six screws fixing the auxiliary output assembly from the cart. Remove the auxiliary output assembly.

Auxiliary output assembly

6-39

6.2.52 Replace the Fuse Loosen the fuse cover with flathead screwdriver (the fuse cover will pop up automatically). Remove the fuse after the fuse cover pops up. After replacing with a new fuse, tighten the cover onto the fuse holder. In case of fuse for power socket, pry up the fuse cover with flathead screwdriver and press the fuse cover in after replacing the fuse.

Pry up fuse cover

Fuse for power socket

6.2.53 Remove the Humid ifi er Br acket Ass embly 1.

Pry up the two screw plugs from the cart column.

2.

Remove the two screws fixing the humidifier bracket assembly.

3.

Remove the humidifier bracket assembly.

6-40

6.2.54 Remove the Casters 1.

Lay down the cart onto the ground.

2.

Remove the caster screw bolts with wrench.

3.

Remove the caster

6.2.55 Remove the Cart Base, Uprigh t Post, and Panel 1.

Lay down the cart onto the ground. Note to keep the cart in good appearance.

2.

Remove the 12 screws fixing the cart upright post.

3.

Separate the cart base, upright post, and panel assembly.

When assembling the cart, put cart packaging foam to the upright post assembly to assemble the base, panel, and upright post. Fix the cart with 12 screws.

Panel assembly

Upright post assembly

6-41

Base assembly

FOR YOUR NOTES

6-42

7 Electrical and Pneumatic Connections 7.1 Pneumatic Connections 7.1.1 Pneumatic Connection Diagram

7-1

7.1.2 Tubing No.

Name

Diameter

Qty. for

Affiliated

a single

assembly

machine

Length (mm )

P/N

Silicone tube Silicone tube

1

Silicone

Expiration valve

tube

seat assembly

Silicone tube Silicone

7

80±5

5.6×2.4

A21-000007---

tube

2 3 4

Silicone

Gas supply control

tube

assembly

Silicone

Safety valve

tube

reservoir assembly

Silicone

Expiration valve

tube

seat assembly

PU tube

Expiration valve

PU tube

4×2.5

seat assembly PU tube

Expiration valve

PU tube

8

Silicone tube Silicone tube

1

80±5 M6G-020046---

1

240±5

2

80±5

assembly 5.6×2.4 5.6×2.4

M6G-020026---

seat assembly Gas supply control

PU tube PU tube

7

130±5

Expiration valve

6×4 6

Gas supply control assembly

PU tube 5

seat assembly

1

Expiration valve seat assembly Expiration valve seat assembly

3

95±5

1

30±3

A21-000007---

1

180±5

A21-000007---

3

10±2

M6G-020046---

Expiration valve seat assembly 9

Transitional tube

4×2.5

Expiration valve seat assembly Gas supply control assembly

7-2

No.

Name

Diameter

Qty. for

Affiliated

a single

assembly

machine

Length (mm )

P/N

Expiration valve seat assembly 10

Silicone tube

5.6×2.4

Expiration valve seat assembly

3

Gas supply control assembly

7.2 Electri cal Connectio ns 7.2.1 Electr ical Connectio n A (main unit ) Electrical connection diagram

7-3

35±3

A21-000007---

Notes: 

Hollow arrows indicate connections through board-to-board connectors while solid arrows indicate connections through cables.



“Bxx” represents self-made boards and “Sxx” purchased materials. In Bxx/Bxx, the first Bxx stands for E3/B3 and the second Bxx for E5/B5. In Sxx/Sxx, the first Sxx stands for E3/B3 and the second Sxx for E5/B5.



“#xx” represents cable.



For E3/B3 ventilator, B3 is connected to B 11 and S3 directly through #6, as shown by the broken lines in the above diagram. For E5/B5 ventilator, B3 is connected to B11 and S4 through #5 and #7 after they are interconnected, as shown by the real lines in the above diagram.



For E3/B3 ventilator, S5 is connected to S3 through #8. For E5/B5 ventilator, S6 is connected to S4 directly through the accompanying cable.



For E3/B3 ventilator, B11 is connnected to B8 and B12 through #12. For E5/B5 ventilator, B11 is connected to B8 through #13 and to B12 through #16.

Wiring S/N

Description

P/N

#1

VT50 AC-DC board AC input line

009-000639-00

#2

VT50 AC-DC board DC input line

009-000635-00

#3

Fan connection line

/

#4

Connection line for VT50 inspiratory connector board

009-000614-00

#5

VT50 main unit internal UI connection line

009-000627-00

#6

Vt50 display cable 10.4" AU screen

009-000625-00

#7

Vt50 display cable 12.1" AU screen

009-000626-00

#8

Connection line for TFT display backlight board

8000-21-10239

#9

Input line for VT50 10.4" display inverter

009-000633-00

#10

Input line for VT50 12.1" display inverter

009-000634-00

#11

Connection line for VT50 encoder board

009-000631-00

#12

Connection line for VT30 key board

009-001105-00

#13

Connection line for VT50 key board (right)

009-000629-00

#14

Speaker connection line

/

#15

Connection line for VT50 alarm lamp board

009-000632-00

#16

Connection line for VT50 key board (left)

009-000628-00

Touchscreen (10.4") connection line

/

Touchscreen (12.1") connection line

/

#18

Connection line for VT50 power switch board

009-000630-00

B1

VT50 AC-DC power board PCBA

051-000152-00

B2

VT50 DC-DC power board PCBA

051-000153-00

#17

7-4

S/N

Description

P/N

B3

VT50 motherboard PCBA

051-000163-00

B4

VT30 monitoring board PCBA

051-000632-00

B5

VT50 monitoring board PCBA

051-000160-00

B6

VT50 extension board PCBA

051-000311-00

B7

VT50 main control board PCBA

051-000139-00

B8


051-000180-00

B9

Copper axis encoder board

0010-30-43089

B10

VT50 alarm lamp board PCBA

051-000182-00

B11

VT50 key control board PCBA

051-000178-00

B12

VT50 key scanning board (left) PCBA

051-000179-00

B13

VT50 power switch board PCBA

051-000181-00

S1

Fan (U60T12MGA7-57)

024-000102-00

S2

Lithium battery

022-000008-00

S3

TFT LCD (10.4")

0010-10-12357

S4

TFT LCD (12.1")

0010-10-42633

S5

Inverter (used together with 10.4" screen)

0000-10-11020

S6

Inverter (used together with 12.1" screen)

022-000001-00

S7

Speaker

9200-21-10633

S8

Touchscreen (10.4")

0000-10-11086

S9

Touchscreen (12.1")

0000-10-10799

Notes: 

Fan “S1” is purchased material. The incoming material already has connection line “#3”.



Fan “S7” is purchased material. The incoming material already has connection line “#14”.



Touchscreen “S8/S9” is purchased material. The incoming material already has connection line “#17”.



The BOM of “B10” already contains “#15”.

7.2.2 Electri cal Connection B (auxiliary ou tpu t assembly) Electrical connection diagram

7-5

Notes: 

Solid arrows indicate connections through cables.



“Sxx” represents purchased material.






The connection line between “S11” and “S12” is related to the power supply standards for China, Europe, Britain etc. “S12” already contains the cable under some standards. Therefore, the cable number is not given in the above diagram.

Wiring S/N

Description

P/N

#19

VT50 auxiliary output cable

009-000647-00

#20

VT50 main unit power cable

009-000624-00

S10

AC power put line (including Chinese, European, and British standards)

/

S11

Fuse (related to the power supply standards for China, Europe, Britain etc.)

/

S12

Auxiliary electrical outlet (including Chinese, European, and British standards)

/

7.2.3 Electr ical Connectio n C (Inspir atory c onnect or assembly ) Electrical connection diagram

7-6

Notes: 

Solid arrows indicate connections through cables.



“Bxx” represents self-made boards and “Sxx” purchased materials.




Wiring S/N

#21

Description

P/N

Connection line for VT50 gas supply pressure switch

009-000615-00

Connection line for VT50 inspiration valve

009-000616-00

Proportional valve connection line

009-001502-00

#23

Connection line for VT50 safety valve

009-000617-00

#24

Connection line for VT50 three-way valve

009-000618-00

#25

Connection line for VT50 nebulization valve

009-000619-00

#26

Connection line for VT50 inspiratory flow sensor

009-000620-00

#27

Connection line for VT50 MOX-3 O2 cell

009-002591-00

B14

VT50 inspiration module board PCBA

051-000161-00

S13

O2 supply pressure switch

/

S14

Air supply pressure switch

/

S15

O2 inspiration valve

/

S16

Air inspiration valve

/

S17

Safety valve

/

S18

Three-way valve

/

S19

Nebulization valve (two-way valve)

/

S20

Three-way valve for Air and O2 switchover

/

S21

O2 inspiratory flow sensor

/

S22

Air inspiratory flow sensor

/

S23

O2 cell MOX-3

040-001275-00

#22

Notes: For E3/B3 ventilator, “#22” is “009-000616-00”. For E5/B5, “#22” is “009-001502-00”.

7-7

7.2.4 Electric al Connection D (Expirator y co nnector assembly) Electrical connection diagram

Notes: 

Hollow arrows indicate connections through board-to-board connectors while solid arrows indicate connections through cables.



“Bxx” represents self-made boards and “Sxx” purchased or outsourcing materials.




Wiring S/N

Description

P/N

#28

Connection line for VT50 expiration valve

009-000622-00

#29

Heating plate connection line

/

B15

VT50 expiration module board PCBA

051-000162-00

S24

Expiration valve (PEEP proportional valve)

/

S25


024-000087-00

S26

Three-way valve

/

Notes: Heating plate “S25” is purchased material. The incoming material already has connection line “#29”.

7-8

8 Parts 8.1 E3 Ventilator Main Unit Assembly 8.1.1 Exploded View

8.1.2 Parts List Note: The P/N of this assembly is 115-003793-00. S/N

P/N

Description

Qty

1

M04-004015---

Cross recessed pan head screw with washer M3X8

12

2

115-003762-00

E3 display front housing assembly

1

3

115-003797-00

E3 display rear housing assembly

1

4

115-004524-00

Expiration Valve Assembly (E3/E5)

1

5

115-003798-00

E3 main unit enclosure assembly

1

6

115-003794-00

E3 ventilator kernel assembly

1

8-1

8.2 E5 Ventilator Main Unit Assembly 8.2.1 Exploded View


P/N

Description

Qty

1

115-003802-00

Main unit enclosure assembly (VT50)

1

2

115-003800-00

Ventilator kernel assembly (VT50)

1

3

115-004524-00

Expiration Valve Assembly (E3/E5)

1

4

M04-004015---


4

8-2

8.3 E3 Ventilator Kernel Assembly 8.3.1 Exploded View


P/N

Description

Qty

1

115-003795-00

E3 ventilator rack Assembly

1

2

115-003792-00

Inspiration module assembly

1

3

115-003791-00

Expiration module

1

4

115-003787-00

Ventilator power Assembly

1

5

M04-004015---


11

6

009-000614-00


1

8-3

8.4 E5 Ventilator Kernel Assembly 8.4.1 Exploded View


P/N

Description

Qty

1

115-003801-00

E5 ventilator rack Assembly

1

2

115-003791-00

Expiration module

1

3

009-000614-00


1

4

115-003792-00

Inspiration module assembly

1

5

M04-004015---


11

6

115-003787-00

Ventilator power Assembly

1

8-4

8.5 E3 Ventilator Rack As sembly 8.5.1 Exploded View


P/N

Description

Qty

1

042-001083-00

E3 main unit rack

1

2

099-000078-00

PCB guide rail RBE-127 primary color nylon 66

3

3

051-000163-00

Motherboard

1

4

051-000160-00

Monitoring board

1

5

051-000311-00

Extension board

1

6

051-000139-00

Main control board

1

7

M05-010002-06

Lithium battery 11.1V4500mAh

2

8

034-000088-00


1

9

047-004728-00

Cushion for PCB disassembling tool

1

10

042-001073-00

Rear cover for module rack

1

11

047-001349-00

Air filter for module rack

1

12

024-000062-00

Conductive cushion for module rack rear cover

1

13

M04-004015---


10

14

047-003426-00

Sealing cushion for ventilator motherboard

1

8-5

8.6 E5 Ventilator Rack As sembly 8.6.1 Exploded View


P/N

Description

Qty

1

042-001098-00

E5 main unit rack

1

2

099-000078-00

PCB guide rail RBE-127 primary color nylon 66

3

3

051-000163-00

Motherboard

1

4

051-000160-00

Monitoring board

1

5

051-000311-00

Extension board

1

6

051-000139-00

Main control board

1

7

M05-010002-06

Lithium battery 11.1V4500mAh

2

8

034-000088-00


1

9

047-004728-00

Cushion for PCB disassembling tool

1

10

042-001073-00

Rear cover for module rack

1

11

047-001349-00

Air filter for module rack

1

12

024-000062-00

Conductive cushion for module rack rear cover

1

13

M04-004015---


10

14

047-003426-00

Sealing cushion for ventilator motherboard

1

15

009-000627-00

VT50 main unit internal UI connection line

1

8-6

8.7 Ventilator Power Assembly 8.7.1 Exploded View


P/N

Description

Qty

1

042-001459-00

Power box main body

1

2

047-002226-00

AC-DC insulating trip

1

3

051-000152-00

AC-DC power board

1

4

M04-004015---


2

5

051-000153-00

DC-DC power board

1

6

041-001359-00

M3 screw

3

7

115-003788-00

Power panel assembly

1

8

M04-005005---

Cross recessed sunk screw M3x6

7

9

042-001075-00

Power box cover

1

10

047-004038-00

Insulating trip for power box cover

1

8-7

8.8 E3 Displ ay Fron t Housin g A ssembly 8.8.1 Exploded View

8-8

8.8.2 Parts List Note: The P/N of this assembly is 115-003762-00, which is compatible with two types of LCD display. S/N

P/N

Description

Qty

1

043-000509-00

Front housing (VT30)

1

2

9211-20-87295

Encoder mounting plate

1

3

0010-30-43089


1

4

043-000504-00

Alarm lamp

1

5

047-001195-00

Up-down waterproof strip (VT30)

2

6

047-001196-00

Left-right waterproof strip (VT30)

2

7

0000-10-11086

8

051-000180-00

VT50 key scanning board 2

1

9

051-000179-00


1

10

6800-20-50201

Power key

1

11

051-000181-00

VT50 system switch board

1

12

9211-20-87299

Knob

1

13

115-003763-00

E3 display assembly

1

14

043-000916-00

Key linkage plate

12

15

047-001205-00

Left key label (VT30)

1

16

047-001206-00

Right key label (VT30)

1

17

M04-003105---

Tapping screw PT3X8

10

18

M04-004015---


8

Groovy touchscreen electric resistance 10.4" five-wire antiglare

8-9

1

8.8.3 E3 Displ ay Assembly (con fig ured wit h pr imary di splay) 8.8.3.1 Explo ded View

8-10

8.8.3.2 Parts List Note: The P/N of this assembly is 115-003763-00. S/N

P/N

Description

Qty

1

042-001025-00

E3 display bracket

1

2

047-004734-00

Internal shading plate for VT50 alarm lamp

1

3

0010-10-12357

AU LCD display TFT10.4"

1

4

M04-000805---

Cross recessed pan head screw M2x8

4

5

047-001202-00

Stop plate (VT30)

1

6

047-001197-00

Left-right touchscreen press strip (VT30)

2

7

047-001198-00

Up-down touchscreen press strip (VT30)

2

8

047-004733-00

External shading plate for VT50 alarm lamp

1

9

043-000505-00

Light block

1

10

051-000182-00

VT50 Alarm lamp board

1

11

0000-10-11020

Inverter DC/AC12VDC500Vrms6mA

1

12

7000-20-24417

Backlight board insulating trip

1

13

M04-051137---


2

14

051-000178-00

VT50 key main board

1

15

047-001200-00

Speaker cushion 2

1

16

042-001026-00

Speaker press plate

1

17

9200-21-10633

2.25" speaker and connection line

1

18

047-001199-00

Speaker cushion 1

1

19

M04-004015---


8

8-11

8.8.4 E3 Displ ay Assembly (con fig ured wit h secon dary display) 8.8.4.1 Exploded View

8-12

8.8.4.2 Parts List Note: The P/N of this assembly is 115-003763-00. S/N

P/N

Description

Qty

1

042-001025-00

E3 display bracket

1

2

047-004734-00


1

3

0010-10-11021

LG LCD display TFT 10.4"

1

4

042-001240-00

10.4" LG display support piece 2

1

5

047-001202-00

Stop plate (VT30)

1

6

047-001197-00

Left-right touchscreen press strip (VT30)

2

7

047-001198-00

Up-down touchscreen press strip (VT30)

2

8

047-004733-00


1

9

043-000505-00

Light block

1

10

051-000182-00


1

11

0000-10-11020

Inverter DC/AC12VDC500Vrms6mA

1

12

7000-20-24417

Backlight board insulating trip

1

13

M04-051137---


6

14

051-000178-00

VT50 key main board

1

15

047-001200-00

Speaker cushion 2

1

16

042-001026-00

Speaker press plate

1

17

9200-21-10633


1

18

047-001199-00

Speaker cushion 1

1

19

M04-004015---


12

20

042-001239-00

10.4" LG display support piece 1

1

8-13

8.9 E5 Disp lay As sembl y 8.9.1 Exploded View


P/N

Description

Qty

1

115-003758-00

Display front housing assembly (VT50)

1

2

115-003759-00

Display rear housing assembly (VT50)

1

3

M04-004015---


8

8-14

8.10 E5 Display Front Housing Assembly 8.10.1 Exploded View

8.10.2 Parts Lis t Note: The P/N of this assembly is 115-003758-00, which is compatible with two types of LCD display. S/N

P/N

Description

Qty

1

043-000503-00

Front housing (VT50)

1

2

043-000504-00

Alarm lamp

1

3

043-000916-00

Key linkage plate

12

4

047-001204-00

Right key label (VT50)

1

5

9211-20-87299

Knob

1

6

9211-20-87295

Encoder mounting plate

1

7

0010-30-43089


1

8

047-001203-00

Left key label (VT50)

1

9

047-001192-00

Up-down waterproof strip (VT50)

2

8-15

S/N

P/N

Description

Qty

10

6800-20-50201

Power key

1

11

047-001191-00

Left-right waterproof strip (VT50)

2

12

051-000181-00

VT50 system switch board

1

13

051-000179-00


1

14

M04-003105---

Tapping screw PT3X8

10

15

M04-004015---


7

16

115-003760-00

Display assembly (VT50)

1

17

051-000180-00


1

18

0000-10-10799

Groovy touchscreen electric resistance 12.1" five-wire

1

8.10.3 E5 Display Assembly (confi gur ed with p rimary d isp lay) 8.10.3.1 Explo ded View

8-16

8.10.3 8.10.3.2 .2 Part Part s Lis L istt Note: The P/N of this assembly is 115-003760-00. 115-003760-00. S/N

P/N

Description

Qty

1

042-001024-00

Display bracket (VT50)

1

2

047-004734-00


1

3

0010-10-42632

LCD display TFT12.1"AU

1

4

047-001201-00

Stop plate (VT50)

1

5

6802-20-66739

Touchscreen press strip 4

2

6

6802-20-66738


2

7

M04-004015---


14

8

022-000001-00

Inverter

1

9

9211-20-87387 9211-20-87387

TPI Backlight board insulating trip

1

10

043-000505-00

Light block

1

11

047-004733-00


1

12

047-001200-00

Speaker cushion 2

1

13

051-000182-00


1

14

9200-21-10633


1

15

042-001026-00

Speaker press plate

1

16

047-001199-00 047-001199-00

Speaker cushion 1

1

17

051-000178-00

VT50 key main board

1

8-17

8.10 8.10.4 .4 E5 Display Assembl y (conf igur ed with second ary display) 8.10.4 8.10.4.1 .1 Explo ded View

8.10.4 8.10.4.2 .2 Part Part s Lis L istt Note: The P/N of this assembly is 115-003763-00. 115-003763-00. S/N

P/N

Description

Qty

1

042-001024-00

Display bracket (VT50)

1

2

047-004734-00


1

3

0000-10-11092 0000-10-11092

LG LB121S03

1

4

047-001201-00

Stop plate (VT50)

1

5

6802-20-66739


2

6

6802-20-66738


2

7

M04-004015---


14

8

022-000001-00

Inverter

1

9

9211-20-87387 9211-20-87387

TPI Backlight board insulating trip

1

10

043-000505-00

Light block

1

11

047-004733-00


1

12

047-001200-00

Speaker cushion 2

1

13

051-000182-00


1

8-18

S/N

P/N

Description

Qty

14

9200-21-10633


1

15

042-001026-00

Speaker press plate

1

16

047-001199-00 047-001199-00

Speaker cushion 1

1

17

051-000178-00

VT50 key main board

1

8.11 Gas Supply Control Assembly (VT30/DISS) 8.11.1 Exploded View

8-19

8.11 8.11.2 .2 Parts Parts Lis t Note: The P/N of this assembly is 115-007477-00. 115-007477-00. S/N

P/N

Description

Qty

1

042-001569-00

Inspiration module fixing bracket

1

2

041-001536-00

Nebulizer connector

1

3

024-000101-00

SENSOR Flow Oxygen 300slpm 5VDC

1

4

024-000100-00

SENSOR Flow Air 300slpm 5VDC

1

5

041-003284-00

Nebulization pneumatic resistor

2

6

M04-004015---

7

051-000161-00


1

8

042-001069-00

Inspiratory board seat

1

9

M04-051139---

10

115-007298-00 115-007298-00

Ventilator pneumatic block assembly (VT30/DISS)

1

11

115-008652-00 115-008652-00

Filter screen assembly at inspiratory port

2

12

082-000566-00

O-ring 21.2X1.8 silicone A50

2

Cross recessed small pan head screw with washer GB9074.5-88 M3X8 zinc plated, yellow

Cross recessed small pan head screw assembly GB/T9074.8 M4X12, zinc plated, yellow

8-20

9

5

8.12 Gas Supply Control Assembly (VT30/NIST) 8.12.1 Exploded View

8-21

8.12.2 Parts Lis t Note: The P/N of this assembly is 115-007478-00. S/N

P/N

Description

Qty

1

042-001569-00


1

2

041-001536-00

Nebulizer connector

1

3

024-000101-00


1

4

024-000100-00


1

5

041-003284-00


2

6

M04-004015---

7

051-000161-00


1

8

042-001069-00


1

9

M04-051139---

10

115-007296-00

Ventilator pneumatic block assembly (VT30/NIST)

1

11

115-008652-00


2

12

082-000566-00


2


Cross recessed small pan head screw assembly GB/T9074.8 M4X12, zinc plated, yellow

8-22

9

5

8.13 Gas Supply Control Assembly (VT50/DISS) 8.13.1 Exploded View

8-23


P/N

Description

Qty

1

042-001569-00


1

2

041-001536-00

Nebulizer connector

1

3

024-000101-00


1

4

024-000100-00


1

5

041-003284-00


2

6

115-006564-00

Flow control assembly (VT50)

1

7

082-000739-00

O-ring 6.5X1.5 fluorine rubber A75 black

2

8

M04-004015---

9

051-000161-00


1

10

042-001069-00


1

11

M04-051139---

12

115-007299-00

13

M04-021005---

14

M04-051073---

15

115-008652-00


2

16

082-000566-00


2


Cross recessed small pan head screw assembly GB/T9074.8 M4X12, zinc plated, yellow Ventilator pneumatic block assembly (VT50/DISS) Single coil spring lock washer, normal type, GB/T93-1987 4, zinc plated, yellow Hexagon socket cap head screw GB/T70.1-2000 M4X12 zinc plated, yellow

8-24

9

5 1 4

4

8.14 Gas Supply Control Assembly (VT50/NIST) 8.14.1 Exploded View

8-25


P/N

Description

Qty

1

042-001569-00


1

2

041-001536-00

Nebulizer connector

1

3

024-000101-00


1

4

024-000100-00


1

5

041-003284-00


2

6

115-006564-00

Flow control assembly (VT50)

1

7

082-000739-00


2

8

M04-004015---

9

051-000161-00


1

10

042-001069-00


1

11

M04-051139---

12

115-007297-00

13

M04-021005---

14

M04-051073---

15

115-008652-00


2

16

082-000566-00


2


Cross recessed small pan head screw assembly GB/T9074.8 M4X12, zinc plated, yellow Ventilator pneumatic block assembly (VT50/NIST) Single coil spring lock washer, normal type, GB/T93-1987 4, zinc plated, yellow Hexagon socket cap head screw GB/T70.1-2000 M4X12 zinc plated, yellow

8-26

9

5 1 4

4

8.15 Flow Control Assembly (VT50) 8.15.1 Exploded View


P/N

Description

Qty

1

M04-021005---

2

M04-051073---

3

082-000574-00

Proportional valve 1350-5102

2

4

082-000739-00


4

5

M6Q-120036---

Plug, hexagon, 0919-00-10

2

6

M04-021063---

G1/8 nylon washer 0602 23 1020

2

7

041-002975-00

E5 inspiration valve seat

1

Single coil spring lock washer, normal type, GB/T93-1987 4, zinc plated, yellow Hexagon socket cap head screw GB/T70.1-2000 M4X12 zinc plated, yellow

8-27

4

4

8.16 Safety Valve Gas Reservoi r Assembly 8.16.1 Exploded View


P/N

Description

Qty

1

115-004729-00

Gas reservoir assembly

1

2

115-004728-00

Safety valve assembly

1

3

M04-051139---

4

115-004727-00

5

M04-000405---

Cross recessed small pan head screw assembly GB/T9074.8 M4X12, zinc plated, yellow Safety valve seat assembly Cross recessed sunk screw GB/T819.1-2000 M3X8 zinc plated, yellow

8-28

4 1 4

8.17 Gas Reservo ir Ass embly 8.17.1 Exploded View


P/N

Description

Qty

1

040-001275-00

O2 sensor

1

2

041-002966-00

O2 sensor transitional part

1

3

M6M-010015---

O-ring 17.17X1.78 silicone A70 black

1

4

043-000555-00

Safety valve gas reservoir

1

5

042-003013-00

O2 sensor press plate

1

6

049-000082-00

Sealing cushion for safety valve gas reservoir

1

7

042-003253-00

Safety valve assembly sheet metal

1

8

M04-004015---


8-29

6

8.18 Safety Valve Assembly 8.18.1 Exploded View


P/N

Description

Qty

1

043-000554-00

Safety valve shell

1

2

M6M-010064---

O-ring 20X2 fluorine rubber A50

1

3

115-004653-00

Safety valve cover assembly

1

4

042-003014-00

Safety valve support plate

1

5

024-000119-00

Electromagnet 12V 48ohm range 6mm

1

6

M04-004015---

7

033-000135-00

C-shape clamping ring

1

8

049-000081-00

Check valve diaphragm

1


8-30

6

S/N

P/N

Description

Qty

9

042-001207-00

Pressure relief valve fixed plate

1

10

049-000175-00

Sealing silicone part for safety valve

1

11

115-001374-00

10cmH2O pressure relief valve

1

8.19 Safety Valve Seat Assembl y 8.19.1 Exploded View


P/N

Description

Qty

1

041-001795-00

Safety valve seat

1

2

082-000533-00

Muffler G3/8,06700017

1

3

082-000566-00


2

4

M04-021063---

G1/8 nylon washer 0602 23 1020

1

5

M6M-010020---

O-ring 12.42X1.78 EPT A70 black

1

6

M6Q-120036---

Plug, hexagon, 0919-00-10

1

7

M04-004015---

8

041-002967-00

Plug for pressure relief valve

1

9

115-008960-00

11kPa pressure relief valve

2


8-31

2

S/N

P/N

Description

10

M04-051094---

11

082-000304-00

Qty

Stainless steel hexagon socket cap head screw GB/T70.1-2000 M3X16 passivation Valve, three-way valve, 12VDC, Air, normally ON

1

8.20 Expirati on Module (E3/E5) 8.20.1 Exploded View


P/N

Description

Qty

1

115-004524-00

Expiration valve assembly (E3/E5)

1

2

115-003791-00

Expiration valve seat assembly

1

8-32

2

8.21 Expiration Valve Assembly (E3/E5) 8.21.1 Exploded View


P/N

Description

Qty

1

043-000551-00

Water trap

1

2

115-009283-00

Check valve assembly

1

3

M6M-010032---

O-ring 18X2.5 silicone red A50

1

4

043-000552-00

Expiration valve elbow pipe

1

5

M6M-010058---

O-ring 16X2 fluorine rubber A50

1

6

043-000532-00

Expiration module door

1

7

115-005288-00

Expiration valve flow sensor assembly

1

8

049-000081-00

Check valve diaphragm

1

8-33

S/N

P/N

Description

Qty

9

043-000550-00

Expiration valve

1

10

049-000083-00

Expiration valve upper diaphragm

1

11

041-001415-00

Expiration valve diaphragm support part

1

12

049-000066-00

Expiration valve lower diaphragm

1

13

082-000565-00

O-ring 31.47X1.78 silicone A50 red

1

14

043-000553-00

Expiration valve cover

1

8.22 Expiration Valve Flow Senso r Ass embly 8.22.1 Exploded View


P/N

Description

Qty

1

043-000733-00

Front end of expiration valve flow sensor

1

2

043-000776-00

Flow sensor bent pipe

1

3

0601-20-69702

Flow sensor diaphragm

1

4

043-000734-00

Rear end of expiration valve flow sensor

1

5

043-000985-00

Flow sensor filter

1

6

M6M-010016---

O-ring 23.60X2.65 silicone A70 red

3

8-34

8.23 Expiration Valve Seat Ass embly 8.23.1 Exploded View

8-35


P/N

Description

Qty

1

041-001359-00

M3 screw

8

2

042-001079-00

Expiration module fixing bracket

1

3

M04-004015---

4

051-000162-00

VT50 expiration module board PCBA

1

5

082-000453-00

Connector, tee

1

6

082-000571-00

7

115-003885-00

Three-way valve assembly

1

8

041-002290-00

Lock rod fixed seat

1

9

033-000054-00

Expiration valve latch spring

1

10

041-001670-00

Expiration valve lock rod

1

11

047-001351-00

12

M90-100030---

Connector, Y,200Barb,1/8"ID,White Nylon

2

13

024-000087-00


1

14

045-000223-00

Expiration valve heat conductive cushion 1

1

15

041-003317-00

Expiration valve shell assembly

1

16

115-005336-00

Expiratory flow sensor seat assembly

1

17

041-002291-00

Expiration valve thermal baffle

2

18

115-006751-00

PEEP valve seat assembly

1


Valve, metal needle valve, applicable to ID.1/8'' tube

Fixed plate for expiration valve shell heating plate

10

1

1

Cross recessed small pan head screw 19

M04-051139---

assembly GB/T9074.8 M4X12, zinc plated, yellow

8-36

4

8.24 Three-way Valve Assembly 8.24.1 Exploded View


P/N

Description

Qty

1

041-001414-00

Three-way valve seat

1

2

082-000739-00


2

3

M90-100060---

Connector.Thread,10-32UNF,1/4"Hex,1/8"ID

2

4

M04-051094---

5

082-000304-00

Stainless steel hexagon socket cap head screw GB/T70.1-2000 M3X16 passivation Valve, three-way valve, 12VDC, Air, permanently ON

8-37

2 1

8.25 Expiratory Flo w Sensor Seat Ass embly 8.25.1 Exploded View


P/N

Description

Qty

1

M90-100060---

Connector.Thread,10-32UNF,1/4"Hex,1/8"ID

2

2

041-002973-00

Expiratory flow sensor seat

1

3

082-000739-00


2

8-38

8.26 PEEP Valve Seat Assemb ly 8.26.1 Exploded View


P/N

Description

Qty

1

M04-051094---

2

082-000575-00

Proportional valve VSONC-5S11-VAF0

1

3

M6M-010045---

O-ring 2.5X1 EPT A50 black

2

4

M6Q-030015---

Straight connector 3175-06-10

1

5

M6Q-030014---

Straight connector 3175-04-10

1

6

041-002974-00

PEEP valve seat

1

7

M04-021062---

M5 nylon washer 0602 29 93 15

2

8

M04-051144---

9

082-000532-00

Muffler.G1/4,06700013

1

10

047-003881-00

PEEP valve muffler gasket

1

Stainless steel hexagon socket cap head screw GB/T70.1-2000 M3X16 passivation

Hexagon socket cap head screw GB/T70.1-2000 M5X6 zinc plated, yellow

8-39

2

2

FOR YOUR NOTES

8-40

SynoVent E3,E5_Service Manual_V3.0_ EN.pdf

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