Vertical Pump with Pulley Misalignment
Vertical motor-driven pump with pulley and belt arrangement exhibits 2X dominant peak in radial direction, high acceleration values, and no bearing faults. Pulleys alignment and belt tension to be checked during downtime.
In a vertical motor driven pump with pulley and belt arrangement what could be the reason of 2X dominant peak [only single peak with no harmonics] on the motor in radial direction?
Acceleration values also do not suggest any bearing faults, amplitude is high at 23 mm/s and during initial troubleshooting hold down bolts checked, and no looseness found. 2X line frequency is also ruled out since electrical frequency is 50Hz [2XLF=100Hz] and motor running speed is 750 RPM [2X=25Hz]. This is a one leg equipment, and we are planning to take a little downtime and check pulleys alignment and belt tension. Should we go for MCEMAX testing?
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