TROUBLESHOOTING CHECKLIST
PROBLEMS
PUMP RUNS BUT DOES
NOT DELIVER WATER
PUMP RUNS BUT ONLY
DELIVERS A SMALL
AMOUNT OF WATER
MOTOR RUNS FOR A
SHORT TIME, THEN
STOPS
POSSIBLE CAUSES/SOLUTIONS
• Impeller or volute openings are fully or partially clogged.
Remove pump and clean.
• Pump is air-locked. Check for clogged vent hole in pump case.
• Inlet holes in pump base are clogged. Remove pump and clean the
openings.
• Vertical pumping distance is too high. Reduce distance or change the
discharge fittings of the pump.
• Pump is air-locked. Check for clogged vent hole in pump case.
• Vertical pumping distance is too high. Reduce distance or change the
discharge fitting of the pump. Inlet holes in pump base are clogged.
Remove pump and clean the strainer and openings.
• Impeller or volute openings are fully or partially clogged.
Remove pump and clean.
• Pump impeller is partially clogged with tar or paint, causing motor to
run slow and overload. Remove pump and clean.
• Inlet holes in pump base are clogged. Remove pump and clean the
openings.
• Pump impeller is partially clogged causing motor to run slow and
overload. Remove pump and clean.
• Motor stator may be defective.
• Impeller or volute openings are fully or partially clogged.
Remove pump and clean. Also clean the strainer if one is installed.
