HAZARDS OF REVERSE PUMP ROTATION - (PPT)

摘要

A discharge check valve stuck wide open will result in approximately 125% over speed with reverse rotation. Bearing failure is a definite possibility Seals were not rated for this rotational speed. Internal pump components may become dislodged High possibility of damaging vibration at over speed Coupling is rated for the rotational speed as long as the train does NOT become energized Motor has journal bearings. Over speed condition in either direction is of concern. Manufacturer should be consulted if a runaway event occurs.