A3CF - wb_213_01

L T u e n c d h , n i S c w a e l d T r e a n i n i n g C e n t r e

M a c h i n e t y p e

ICU

1 Cleaning tank 2 Steam sparser 3 Cleaning tank level sensor 4 Circulation pump 5 Pump drainage valve 6 Water inlet valve 7 Swing pipe 8 Switch valve 9 Steam inlet valve

Integrated Cleaning Unit

Denominations

14 Regulating valve 15 Flow meter 16 Shut−off valve 17 Connector for refilling acid/alkali 18 By−pass valve acid/alkali 19 Acid/alkali pump

20 Rinsing valve 21 Refilling valve acid/alkali 22 Acid container 23 Alkali container 24 Acid/alkali level sensor 25 Constant flow valve 26 Steam flushing valve

Sterile air

7

10 Steam pressure regualtor 11 Conductivity probe and temperature sensor 12 Main drain valve 13 Cleaning cup

15

16

14

16

8

I C U T P A 3 / C F

Chemical return

17

9

17

18

18

26 19

I s s

6

3

1 u e / 1 1 0 2

20

19

20 21

25 10

22 24

O H 2 3 7 0 : 1

2

1

11 4 5

ICU

Compressed air Integrated Cleaning Unit

Filling tank

Hot water Acid concentrate/solution Alkali concentrate/solution

Chemical return

I s s

High level

Low level

O H 2 3 7 0 : 2

Steam Cold water

Sterile air


1 u e / 1 1 0 2

23 24

12 13


I C U T P A 3 / C F

21

ICU


Filling tank


Steam Cold water Hot water

Sterile air

Acid concentrate/solution Alkali concentrate/solution


I C U T P A 3 / C F

Chemical return

I s s

1 u e / 1 1 0 2

High level

Low level

O H 2 3 7 0 : 2

ICU

I s s

O H 2 3 7 0 : 3


Sterile air



1 u e / 1 1 0 2


Pre−rinsing


I C U T P A 3 / C F

Compressed air

Chemical return

ICU


Filling tank



Sterile air



I C U T P A 3 / C F

Chemical return

I s s

1 u e / 1 1 0 2

High level

Low level

O H 2 3 7 0 : 2

ICU

I s s

O H 2 3 7 0 : 3


Sterile air



1 u e / 1 1 0 2


Pre−rinsing


I C U T P A 3 / C F

Compressed air

Chemical return

ICU


Pre−rinsing



Sterile air



I C U T P A 3 / C F

Chemical return

I s s

1 u e / 1 1 0 2

O H 2 3 7 0 : 3

ICU

I s s

O H 2 3 7 0 : 4


Sterile air



1 u e / 1 1 0 2


Heat circulation


I C U T P A 3 / C F

Compressed air

Chemical return

ICU


Heat circulation



Sterile air



I C U T P A 3 / C F

Chemical return

I s s

1 u e / 1 1 0 2

O H 2 3 7 0 : 4

ICU


Filling cleaning system


Chemical return

High level

Low level

O H 2 3 7 0 : 5


I s s

1 u e / 1 1 0 2

Cold water Hot water

Sterile air


I C U T P A 3 / C F

Steam

ICU





Sterile air



I C U T P A 3 / C F

Chemical return

I s s

1 u e / 1 1 0 2

High level

Low level

O H 2 3 7 0 : 5

ICU

I s s

O H 2 3 7 0 : 6


Sterile air



1 u e / 1 1 0 2


Alkali circulation


I C U T P A 3 / C F

Compressed air

Chemical return

ICU


Alkali circulation



Sterile air



I C U T P A 3 / C F

Chemical return

I s s

1 u e / 1 1 0 2

O H 2 3 7 0 : 6

ICU

I s s

O H 2 3 7 0 : 7


Sterile air



1 u e / 1 1 0 2


Acid circulation


I C U T P A 3 / C F

Compressed air

Chemical return

ICU


Acid circulation



Sterile air



I C U T P A 3 / C F

Chemical return

I s s

1 u e / 1 1 0 2

O H 2 3 7 0 : 7

ICU

I s s

O H 2 3 7 0 : 8


Sterile air



1 u e / 1 1 0 2


Emptying system


I C U T P A 3 / C F

Compressed air

Chemical return

ICU


Emptying system



Sterile air



I C U T P A 3 / C F

Chemical return

I s s

1 u e / 1 1 0 2

O H 2 3 7 0 : 8

ICU


Emptying rinsing


Chemical return

High level

Low level

O H 2 3 7 0 : 9


I s s

1 u e / 1 1 0 2

Cold water Hot water

Sterile air


I C U T P A 3 / C F

Steam

ICU


Emptying rinsing



Sterile air



I C U T P A 3 / C F

Chemical return

I s s

1 u e / 1 1 0 2

High level

Low level

O H 2 3 7 0 : 9

ICU

I s s

O H 2 3 7 0 : 1 0


Sterile air



1 u e / 1 1 0 2


Circulation


I C U T P A 3 / C F

Compressed air

Chemical return

ICU


Circulation



Sterile air



I C U T P A 3 / C F

Chemical return

I s s

1 u e / 1 1 0 2

O H 2 3 7 0 : 1 0

ICU

I s s

O H 2 3 7 0 : 1 1


Sterile air



1 u e / 1 1 0 2


Final draining


I C U T P A 3 / C F

Compressed air

Chemical return

ICU


Steam

Final draining


Cold water Hot water Sterile air



I C U T P A 3 / C F

Chemical return

I s s

1 u e / 1 1 0 2

O H 2 3 7 0 : 1 1

ICU



Positions


Sterile air

7 15

16

14

16

8

I C U T P A 3 / C F

Chemical return

17

9

17

18

18

26 19

I s s

6

3

1 u e / 1 1 0 2

20

20 21

21

25 10

22 24

O H 2 3 7 0 : 1 2

19

2

1

12 13

11 4 5

23 24

ICU



Positions


Sterile air

7 15

16

14

16

8

I C U T P A 3 / C F

Chemical return

17

9

17

18

18

26 19

I s s

6

3

1 u e / 1 1 0 2

20

20 21

21

25 10

22 24

O H 2 3 7 0 : 1 2

19

2

23 24

1

12 13

11 4 5

Textbook

Integrated Cleaning Unit TP A3/CompactFlex 0200

Textbook


MT-83134-1

Technical Training Centre Lund, Sweden

This textbook has been compiled by the Technical Training Centre in Lund. Some of the pictures in the book are also available as OH pictures. For further information on training material, please contact the Technical Training Centre.

Issue 1/1102 © 2011, Technical Training Centre No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means: electronic, electrostatic, magnetic tape, mechanical photocopying, recording or otherwise, without permission in writ ing from Technical Training Centre.


Training Document This Training Document is intended for Training purposes only, and must not be used for any other purpose. The Training Document does not replace any instructions or procedures (e.g. OM, MM, TeM, IM, SPC) intended for specific equipment, and must not be used as such. Note! For safe and proper procedures, refer to the equipment specific documentation.

Technical Training Centre

Contents About cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 CIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 What is cleaned with CIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Cleaning factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 The effects of the chemicals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 The cleaning steps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Daily cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Weekly cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 CIP Drying . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Intermediate cleaning and final cleaning . . . . . . . . . . . . . . . . . . . . . . . . . 7 Intermediate cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Final cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 The ICU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Advantages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Water supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Water drainage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Alkali/Acid drainage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Refilling of alkali and acid detergent . . . . . . . . . . . . . . . . . . . . . . . 8 Recorder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Components of the ICU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Superstructure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Chemical module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 CIP diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 The ICU program steps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Filling tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Pre-rinsing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Filling cleaning system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Heat circulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Circulation alkali. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Circulation acid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Emptying rinsing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Cold circulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Emptying system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Final draining . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Refilling of acid/alkali . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 CIP Drying. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 CIP Drying . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Sequence diagram ICU TP A3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23


This description of the Integrated Cleaning Unit, is from now on called the ICU. The following topics are included: ! ! ! ! ! !

An introduction to cleaning of a Tetra Brik Aseptic (TBA) filling machine A general description of the ICU An overview of the components in the ICU A description of all the program steps of the ICU A brief description of the Cleaning In Place (CIP) Drying Sequence diagrams for the ICU of the TP A3/CompactFlex 0200

The ICU main parts: tank to the top left, containers with detergent to the bottom left, acid/alkali pumps and dosing valves to the top right and refilling coupling for detergent to the bottom right.

Technical Training Centre 1/1102

MT-83134-1 Training Document. For training purpose only.

3

About cleaning It it essential to clean the equipment properly. The sterilisation process which follows the cleaning - is only effective on clean and dry surfaces. There is a risk of product contamination if the cleaning is not performed properly.

CIP Cleaning In Place (CIP) is a method used for cleaning filling machines and process equipment without having to disassemble them. A production cycle is always followed by a CIP. It is important to clean as soon as possible after the end of production to prevent the product from drying on the surface. Dried-in product on the equipment makes the CIP more difficult.

What is cleaned with CIP? Besides the connection pipes, the following parts are cleaned on a TP A3 machine without dismantling: ! AP-valve ! Regulating valve ! Upper filling pipe

AP = Aseptic product

C

A

B

AP valve

Regulating valve

Upper filling pipe

4



Cleaning factors There are four important cleaning factors: ! Flow A turbulent flow of cleaning liquid is required to remove product residues. This is achieved by the speed of the cleaning liquid which is 1.5-3.0 m/s. The flow must be at least 8000 l/h in order to reach this speed in the APvalve. ! Concentration Chemicals are used to dissolve the product residues. The concentration of the cleaning liquid must be correct. ! Temperature Correct temperature of the cleaning liquid is important to dissolve the product residues. ! Time It is essential that the cleaning liquid maintains contact with the product residues long enough in order to dissolve them.

The effects of the chemicals Alkali detergent = based on for example caustic soda Acid detergent = based on for example nitric acid

The product residues may contain sugar, fat, proteins, salt and minerals. Warm water is sufficient to dissolve sugar. But to dissolve fat and proteins requires an alkali detergent. The quantity of salt and mineral deposits varies due to what product is filled and to the degree of hardness of the rinsing water. An acid detergent has to be used to remove salt and mineral deposits .

what

solution

W A

T

D I

Salt C A and miner al Protein

E

R

Sugar Fat

A LK A L I



5

The cleaning steps Two cleaning programmes are used: daily cleaning and weekly cleaning. Acid rinse

Acid cleaning

Alkali rinse

Alkali cleaning

Warm rinse

Pre-rinse

Daily cleaning Weekly cleaning

The cleaning steps

Daily cleaning is performed after each production or as often as required.

Daily cleaning

Daily cleaning includes the following steps: 1. 2. 3. 4.

Pre-rinse Cold water forces product residues out of the pipes. Warm rinse Warm water dissolves sugar. Alkali cleaning Alkali dissolves fat and proteins. Alkali rinse Cold water forces alkali residues out of the pipes. Rinsing goes on until the conductivity of the rinsing water is equal or lower than a predefined value.

Weekly cleaning is scheduled individually for each plant. How often it is performed depends on the product and on the hardness of the water.

Weekly cleaning

Weekly cleaning includes the following steps in addition to the daily cleaning: 5. 6.

Acid cleaning Acid cleaning dissolves salt and minerals. Acid rinse Cold water forces acid residues out of the pipes.

CIP Drying The sterilisation process is only effective on clean and dry surfaces. It is therefore important to get the pipes dry again after the rinsing is finished. CIP Drying is not a part of the ICU program, but is to be performed within a certain time after the ICU program is finished. Warm air is circulated through the filling system and any water remaining in the system is evaporated. The evaporated water follows the air out of the system.

6



Intermediate cleaning and final cleaning AP = Aseptic product

There are two types of CIP cleaning methods: intermediate cleaning and final cleaning. The difference between the two methods is constituted by the position of the AP-valve.

Intermediate cleaning

Steam Product Water Air Detergent The AP-valve during intermediate cleaning

Intermediate cleaning is performed when the m achine is out of operation but the product line contains product and other machines in the l ine are operating. Since alkali and acid are used when cleaning, it is important to make sure that no detergent can leak into the product. In this position of the AP-valve, a steam ba rrier is applied between the product in the product line and the cleaning liquid circulating the machine. This prevents the cleaning liquid from leaking into the product line. The steam barrier space will not be cleaned during intermediate cleaning. This part of the AP-valve will only be cleaned during final cleaning.

Final cleaning

Steam Water Air Detergent Detergent (In this case the product line is cleaned at the same time) The AP-valve during final cleaning

Final cleaning is performed when there is no product in the product line, which means that none of the machines in the line are operating. Final cleaning should be performed at least once a day. In this position of the AP-valve, the steam barrier space is cleaned as well.



7

The ICU The Integrated Cleaning Unit (ICU) is integrated in the filling machine. It is located in the machine as follows:

Location

! The cleaning tank with the pump belongs to the superstructure module. ! The two containers with acid and alkali detergent and the dosing pumps are located in the chemical module. The ICU has the following advantages:

Advantages

! The pipes and the signal exchange between the filling machine and an external cleaning unit is eliminated. ! Since the system is smaller, the amount of cleaning liquid necessary is reduced as well as the cleaning time. ! The ICU is ready to clean whenever required. ! The ICU program is controlled by the machine programme. On the service unit, there is a separate water connection for the ICU.

Water supply

The water is drained through the draining pipe under the final folder unit.

Water drainage

Water drainage

The alkali and acid solutions are drained through the chemical return outlet, which has to be connected to a suitable waste tank. The chemical solutions are to be handled according to the legislation. Alkali or acid must never be re-used. ( For further information see the chapter Safety Precautions in the MM )

Alkali/Acid drainage

If the level of alkali or acid detergent in a container is too low, an alarm is triggered on the TPOP. In order to refill the container, the appropriate filling pipe must first be connected to the appropriate connection for refilling acid/ alkali ( see page 11, figure 19). The refilling is to be initiated by means of the TPOP. The pump stops when the container is full .

Refilling of alkali and acid detergent

There is a built-in recorder in the TP A3 filling machine. It registers essential production parameters and the following CIP parameters on a time scale:

Recorder

Chemical return outlet

! Conductivity of the cleaning liquid (mS/cm) ! Flow rate of the cleaning liquid (l/h) ! Temperature of the cleaning liquid (°C)

Built-in recorder

8



Components of the ICU Superstructure

Cleaning tank and pump located in the superstructure module. 3

6 4

1

1. 2. 3. 4. 5. 6.

Cleaning tank Sample tap Cleaning tank level sensor Circulation pump Pump draining valve Water inlet valve

2

5

Chemical module

Containers with detergent and dosing pump, located in the right hand side of final folder unit, below package conveyor (containers) and above package conveyor (dosing pumps).

13

13

14 14

8

7. Refilling valve acid/alkali 8. By-pass valve acid/alkali 9. Acid/alkali pump 10. Acid/alkali level sensor 11. Acid container 12. Alkali container 13. Rinsing valve 14. Shut-off valve

8 9

9 7

10

7 10

12 11



9

CIP diagram

At CIP, the ICU is connected to the filling system according to the diagram below.

Sterile air

14

7 15 16

25

16

8

17

Chemical return

9

18 19

26

20

25

10

12

11

23

22 24

1

2

21

21

6

13

19

20

3

17

18

24

4 5

1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26.

10

Cleaning tank Steam sparser Cleaning tank level sensor Circulation pump Pump draining valve Water inlet valve Swing pipe Switch valve Steam inlet valve Steam pressure regulator Conductivity probe and temperature sensor Main drain valve Cleaning cup Regulating valve Flow meter Shut-off valve Connector for refilling acid/alkali By-pass valve acid/alkali pump Acid/alkali pump Rinsing valve Refilling valve acid/alkali Acid container Alkali container Acid/alkali level sensor Constant flow valve Steam flushing valve



The ICU program steps Compressed air Steam Cold water Hot water Sterile air


Chemical return

High level

Low level

Filling tank


In this program step, the cleaning tank is filled with water. The water inlet valve closes when the high level is reached.


11

Compressed air Steam Cold water Hot water Sterile air


Chemical return

In this program step, cold water forces the remaining product residues out of the filling system.

Pre-rinsing

The circulation pump - which is controlled by a variable frequency drive ramps up the flow rate to fill the system without pressure shocks which could destroy the membrane of the regulating valve. The PLC m onitors the flow rate by means of the flow meter. The level of the cleaning tank is continuously monitored by the cleaning tank level sensor. When the measured level is down to low level, the pump stops and the tank is filled with fresh water. This routine is repeated a number of times in order to remove all product residues. The main drain valve is open to drain the system from a mix of cold water and product residues.

12





Chemical return

High level

Low level


In this program step, the CIP system is filled up with water. The level of the cleaning tank is continuously monitored by the cleaning tank level sensor. When required, the water inlet valve opens to top up the water. The program step will finish when the water has the minimum required flow and the level in the tank is stable for a certain time. The switch valve directs the water to the tank, i.e. the water circulates in a closed loop.



13



Chemical return

In this program step, warm water dissolves sugar, melts fat build-ups and removes these residues from the filling system.

Heat circulation

The system has already been filled with wa ter during the program step Filling cleaning system. The pump continues to run. The steam inlet valve opens and steam enters the tank to warm up the water until the correct temperature is reached. When the temperature and flow parameters are reached, circulation goes on for a predefined time. The pump stops when the circulation is finished. The next program step is the Emptying system. Alarm conditions: ! The temperature does not reach the setpoint within the time limits. ! The flow rate is too low.

14





Chemical return

Circulation alkali

In this program step, alkali solution dissolves organic residues (fat and protein). The steam inlet valve opens. Steam heats up the water until the correct temperature is reached. Then the alkali pump runs until the concentration of the cleaning solution is correct. The concentration is monitored by the conductivity sensor. When temperature, concentration and flow rate are correct, the circulation of the cleaning liquid goes on for a predefined time. Alarm conditions: ! If the temperature is not maintained within the time limits. ! If the concentration does not reach the setpoint within time limits. ! The flow rate is too low.



15



Chemical return

In this program step, acid solution dissolves mineral deposits.

Circulation acid

The steam inlet valve opens. Steam heats up the water until the correct temperature is reached. Then the acid pump runs until the concentration of the cleaning solution is correct. The concentration is monitored by the conductivity sensor. When temperature, concentration and flow rate are correct, the circulation of the cleaning liquid goes on for a predefined time. Alarm conditions: ! If the temperature is not maintained within the time limits. ! If the concentration do not reach the setpoint within the time limits. ! The flow rate is too low.

16





Chemical return

High level

Low level

Emptying rinsing

In this program step, cold water forces the remaining cleaning solution out of the filling system. The switch valve changes position and directs the cleaning liquid to the chemical return outlet. The cleaning tank is refilled with water to maintain a correct level. The rinsing goes on until the conductivity of the rinsing water is lower than a predefined value. After that, the circulation pump continues running for an additional time and then stops. The program steps Filling tank, Filling cleaning system and Cold circulation are always followed by step Emptying Rinsing (see page 25). The pump speed is controlled to obtain a correct flow at a predefined rate to ensure that the water supply is sufficient to maintain the tank level. The rinsing valve opens to remove remaining chemicals from the acid/alkali pump and the pipes.



17



Chemical return

In this program step, water circulates in the system to verify dilution of the cleaning solution.

Cold circulation

The concentration of detergent in the rinsing water is measured by the conductivity sensor. The conductivity of the rinsing water must be less than the defined value, otherwise the system is drained and the program repeats the program steps Filling tank, Filling cleaning system and Cold circulation.

18





Chemical return

Emptying system

In this program step, the cleaning tank is emptied from water. The main drain valve and the pump drain valve open to drain off the water. The program step Emptying system is finished if the minimum level is reached in the tank and a predefined time has elapsed. This is the last program step of the cleaning steps Pre-rinse, Warm rinse and Alkali rinse.



19



Chemical return

In this program step, the cleaning system is emptied from water.

Final draining

The main drain valve and the pump drain valve open to drain off the water. The switch valve directs the cleaning liquid from the chemical return in order to empty it. The program step Final draining continues for a predefined time to empty the system.

20



Cold water Acid concentrate/solution Alkali concentrate/solution

Refilling of acid/alkali

The acid/alkali container is to be refilled when the level becomes too low. An alarm on the TPOP signals when refilling needs to be done. The refilling pipe is connected to the connector for refilling. The acid/alkali pump runs in reverse direction to pump the concentrated acid/alkali from the storage vessel into the acid/alkali container.



21

CIP Drying

Air Hot air Pre−heated air alt. cooled air Steam Product Water Peroxide Compressed air

1

Cleaning liquid

3

4

2

This step does not belong to the ICU program steps, but should be performed ASAP after the ICU program is finished.

CIP Drying

Any remaining water in the system is dried by means of warm air. It is important to dry the system thoroughly, since water in the filling system might compromize the sterilization effect. Before the filling machine is stepped up to CIP Drying, the swing pipe (1) has to be shifted from the cleaning liquid connection to the sterile air connection. The water ring compressor (2) starts circulating air and t he air superheater (3) is switched on. After reaching 50°C on the product pipe temperature sensor, air superheater is switched off. Air circulation continues for next minutes to reach predefined time. Any remaining water in the system is evaporated and follows the a ir out of the system (4).

22



Sequence diagram ICU TP A3 T e c h n i c a l T r a i n i n g C e n t r e 1 / 1 1 0 2

Main cleaning steps Sub-steps...

...Components

Regulating valve (cleaning) M T 8 3 1 3 4 -1 T r a i n i n g D o c u m e n t . F o r t r a i n i n g p u r p o s e o n l y .

Pre-rinse n F a F l e O c k o n g t a n t i y g n d a a i n e e l l l i C R F

g n i s n i r e r P

Warm rinse

m e t s m y e s k t g n s a y n t s i y g g t p i n i n l l l l m i i E F F

n o i t a l u c r i c t a e H

Alkali cleaning m e t s m y e s k t g n s a y n t s i y g g t p i n i n l l l l m i i E F F

Alkali rinse

i l a k l a n o i t a l u c r i C

g n i s n i r g n i y t p m E

Open

Open

Open

ICU Pump drain valve

Closed

Closed

Closed

Switch valve

Ch. ret.

Main drain valve (Normally open)

Closed

O

g n i s n i r g n i y t p m E

d i c a n o i t a l u c r i C

n o m i t e a k t l s n y u c a s i r t g g c n i n l d i l l l l i i o F F C

g n i n i a r d l a n i F

O

O

Open

Open

Chemical return Closed

O

O

O

Open

Closed

Closed

Chemical return Closed

Flow meter Cleaning liquid temperature Conductivity sensor Repeat 3 times

Cleaning tank level

Daily cleaning

Weekly cleaning

2 3

m e t s m y e s k t g n s a y n t s i y g g t p i n i n l l l l m i i E F F

Acid rinse

Open

Water inlet valve

All parameters OK timer start

n o m i t e a k t l s n y u c a s i r t g g c n i n l d i l l l l i i o F F C

Acid cleaning

r . h C

24



A3CF - wb_213_01

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