Product Manual

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.