Excessive Vibration
and Noise in Pump
Vibration from the pump’s feet and the base (where the pump
rests) can cause the pump to be noisy. A
piece of old carpet or rubber between the pump’s base and equipment pad might
reduce the noise.
The bearings might be noisy due to age or high
concentrations of chemicals and heat. A leaky pump seal could damage the front
motor bearing. It is very important to
quickly repair any leaks around the pump to prevent extensive damage.
Many times a noisy pump can come from cavitation. Cavitation
has two possible causes, which are both hydraulically related. The first is that the suction piping is
undersized. If this pipe is undersized,
the amount of water the pump requires to operate properly is reduced. Increasing the pipe size or dropping the size
of the impeller can quiet the pump.
Ensure the pump is level and the suction lines are not
higher than the pump.
Other reason for excessive vibration and noise are given
below:
Foreign material in pump causing imbalance
Foundation and/or hold down bolts loose