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Troubleshooting_____________________________________________________________________________________
Problems
Possible Causes
Pump dose not
run and hums
* Line circuit breaker is off, or fuse is burned or loosed.
* Water level in sump has not reached turn-on level as indicated
in installation drawing on the carton.
* Pump cord is not making contact in receptacle.
* Float (optional) is stuck. It should operate freely in basin.
* If all of the above are OK and then the motor could be operate.
Pump runs
but does not
deliver water
* Check valve (optional) is installed backwards. (Not included with pump)
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.
* Inlet holes in pump base are clogged. Remove pump and clean the openings.
* Vertical pumping distance is too high or the pipe size is too small. Reduce
vertical distance or increase the pipe size fittings.
Pump runs and
Pump out sump,
but does not stop.
* Float (optional) 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.
* Vertical pumping distance is too high or pipe size is too small. Reduce vertical
distance or increase the pipe size.
*Inlet holes in pump base are clogged.
Remove pump and clean the openings.
* Impeller or volute openings are fully or partially clogged.
Remove pump and clean.
* Pump impeller is partially clogged with debris, 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 debris, 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 debris, 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.
Matala
“
Make water alive
”
®