As expected, the waveform is repetitive, sinusoidal and has a strong 1xTS pattern. Notice the amplitude is fairly high, but lacks any impacting.
The spectrum from the Motor Outboard Vertical (MOV) measurement point is shown above. Its amplitude is 6.5 times less than that of the horizontal reading. This is a good indication that unbalance is not the problem that needs to be corrected. When the motor was removed for balancing, it was found the foundation grouting was cracked. Anytime you find a 3:1 ratio when comparing the horizontal to vertical reading, suspect another problem other than unbalance.
