The clearance of sliding parts will become larger and the pump performance will decrease. The vibration value will rise and part lifespans will become shorter. Rotating parts and fixed parts may become damaged, and it may become difficult to continue operation.
Rotating, but water does not come out. Discharge quantity is not enogh to specified capacity.
Over load (Overcurrent) occurs.
Excessive water leakage from stuffing box
Electric motor does not work well with noise.
Water comes out at first, but it doesn't come out soon.