WATER SOURCE LLC
6
WWW.WATERSOURCEUSA.COM
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 blown.
●
Water level in sump pit 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.
Pump runs
but does not
deliver water
●
Check valve is installed backwards. Flapper should open in direction of water 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.
●
Vertical pumping distance (“head”) is too high. Reduce distance or increase
diameter of discharge pipe.
Pump runs
and pumps
out sump pit,
but does not
stop
●
Float switch is stuck in up/on position. Be sure float switch operates freely in pit.
●
Defective float switch. Replace with new float 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 discharge pipe.
●
Vertical pumping distance (“head”) is too high. Reduce distance or increase
diameter of discharge pipe.
●
Impeller or volute openings are fully or partially clogged. Remove pump and clean.
Fuse blows or
circuit
breaker trips
when pump
starts
●
Pump impeller is partially clogged, 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.
●
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.
●
Motor stator may be defective.
●
Impeller or volute openings are fully or partially clogged. Remove pump and clean.
