INSTALLATION MANUAL
8
TROUBLESHOOTING
(CONTINUED)
Symptoms
Possible Cause(s)
Suggested Remedies
Pump operates
noisily or vibrates
excessively
1. Worn bearings
2. Impeller broken
3. Piping attachments to building
structure too rigid or too loose
1. Replace pump
2. Replace pump
3. Install rubber coupling (available at local hardware stores) to isolate
pump vibration from discharge plumbing
Pump will not
shut off
1. Switch
2. Switch obstructions
3. Restricted discharge (obstruction in
piping)
4. Excessive inflow or pump not
properly sized for application
1. Replace switch
2. Remove obstruction to verify free motion of switch
3. Remove obstruction from discharge piping
4. Recheck all sizing calculations to determine proper pump size
Pump operates
but delivers little
or no water
1. Low supply voltage
2. Inlet clogged
3. Broken impeller
4. Pump not properly sized for
application
5. Check valve stuck closed or
installed backwards
6. Shut off valve closed
1. Contact an electrician
2. Remove debris
3. Replace pump
4. Recheck all sizing calculations to determine proper pump size
5. Remove and examine check valve for proper installation and free
operation
6. Open valve
ROUTINE MAINTENANCE
The pump should be inspected 3-4 times per year for pump movement or buildup of debris on the switch or floar. Reposition
pump if it has moved. Remove any debris that could interfere with the operation of the switch. Lack of proper routine maintenance
will void warranty.
• Make sure the pump is plugged in to a working ground fault circuit interrupter (GFCI) outlet and the cord is in good shape. In
damp areas, GFCI breakers may trip, effectively shutting off the effluent pump. Check in on your sewage pump and reset the
GFCI if necessary.
• Ensure the pump itself is standing upright. Vibrations during operation can cause it to fall or tilt onto one side. This can jam the
float arm so it can’t activate the pump.
• Pour a bucket of water into the pit to make sure the pump starts automatically and the water drains quickly once the pump is
on. If the pump doesn’t start, have it serviced or replaced.
• Replace the switch every two (2) years. This maintence will reduce the risk of improper pump operation, switch failure and/or
flooding.
Summary of Contents for EFL50
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