Vibration and noise.
Forward Rotation.
Reverse Rotation.
Proper.
Improper.
Rewire two phases of the three phase.
4
Check the shaft center deflection.
Improper installation.
Check the vibration or noise source.
Inside the pump.
Motor Bearing.
Piping and valve
section.
Foundation section.
Low suction pressure due
to excess suction lift.
Cavitation.
Foreign particles in
suction side.
Impeller is not
balanced.
Worn or damaged
motor bearing.
Water hammer.
Resonance due to
water flow.
Insufficient rigidity.
Insufficient support for
piping.
20
