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EBARA Oil Smart Pump System
Troubleshooting Checklist
PROBLEM
Pump does not run or
hums.
Pump runs but does not
deliver water.
Pump runs but delivers
only a small
amount of water.
Fuse blows or circuit
breaker trips when
pump starts.
Motor runs for a short
time, then stops.
EBARA Pumps Americas Corporation
www.pumpsebara.com
(t) 803 327-5005 • (f) 803 327-5097
• Line circuit breaker is off, or fuse is blown 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.
• If all of the above are OK, then the motor winding may be open.
• Check valve is installed backwards. Arrow on valve should point in
direction of flow.
• Discharge shut-off valve (if used) may be closed.
• Pump is air-locked. Start and stop several times by plugging and
unplugging cord. Check for clogged vent hole in pump case.
• Impeller or volute openings are fully or partially clogged. Remove
pump and clean.
• Inlet holes in pump base are clogged. Remove pump and clean
the openings.
• Vertical pumping distance is too high. Reduce distance or resize pump.
• 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. Reduce distance or resize pump.
• Inlet holes in pump base are clogged. Remove pump and clean
the openings.
• Impeller or volute openings is 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.
• 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.
• Impeller or volute openings are fully or partially clogged. Remove
pump and clean.
• 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.
POSSIBLE CAUSES
15
rev. 01/14
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