HERE

TROUBLESHOOTING CHECKLIST (CAUTION: SHUT OFF POWER TO PUMP)
PROBLEMS POSSIBLE CAUSES
Pump does not run
and hums
● Line circuit breaker is off, or fuse is burned or loose.
● Water level in sump has not reached turn-on level as indicated in installation drawing.
● Pump cord is not making contact in receptacle.
● Float is stuck. It should operate freely in basin.
● If all of the above are OK, then the motor could be malfunctioning.
Pump runs but does
not deliver water.
● Check valve is installed backwards.
Arrow on valve should point in direction of flow.
● Discharge shut-off valve (if used) may be closed.
● Impeller or volute openings are fully or partially clogged.
Remove pump and clean.
● Pump is air-locked. Start and stop several times by plugging and unplugging cord. Check
for clogged vent hole in pump case. Drill a 1/8”inch hole into PVC Pipe.
● 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 runs and
pumps out sump, but
does not stop
● Float is stuck in up position. Be sure float operates freely in basin.
● Defective float switch. Replace with float switch.
● Defective vertical switch. Replace with vertical switch.
Pump runs but
delivers only a small
amount of water.
● Pump is air-locked. Start and stop several times by plugging and unplugging cord. Check
for clogged vent hole in pump case. Drill a 1/8”inch hole into PVC Pipe.
● 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.
Fuse blows or circuit
breaker trips when
pump starts.
● Pump impeller is partially clogged with tar or paint, causing motor to run slow and overload.
Remove pump and clean.
● Motor stator may be defective.
● Fuse size or circuit breaker may be too small. (Must be 15 amps).
● Impeller or volute opening are fully or partially clogged.
Remove pump and clean
Motor runs for a short
time, then stops.
● Inlet holes in pump base are clogged. Remove pump and clean the openings.
● Pump impeller is partially clogged with tar or paint, 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 you had installed.
WARNING
ELECTRICAL PRECAUTIONS—
Before servicing a pump, always shut off the main power breaker and then unplug the pump.
Make sure you are not standing in water and are wearing insulated protective sole shoes, under flooded
conditions, Contact your local electric company or a qualified licensed electrician for disconnecting
electrical service prior to pump removal.