Troubleshooting 8
Risk of electrical shock, cuts, and possible unexpected starts. Can result in electrical shock or pinching
of hands or tools. If power to pump is on when thermal overload resets, pump may start without warning. Disconnect
power before servicing pump.
Symptom
Possible Cause(s)
Corrective Action
Failure to pump.
Pump not property primed.
Make sure pump casing and suction line are full of water. See priming
instructions
Reduced capacity and/or pressure.
Air pockets or leaks in suction line.
Check suction piping.
Clogged impeller.
Remove and clean.
Pump loses prime.
Air leaks in suction line.
Check suction piping.
Excessive suction lift and operating too near
shut-off point.
Move pump nearer water level.
Water level drops while pumping, uncovering
suction piping.
Check water supply. Add length of pipe to suction to keep submerged
end under water.
Mechanical troubles and noises.
Bent shaft and/or damaged bearings.
Take motor to authorized motor repair shop.
Suction and/or discharge piping not properly
supported and anchored.
See that all piping is supported to relieve strain on pump assembly.
