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7 Troubleshooting
7 Troubleshooting
7.1 Operation troubleshooting
Symptom
Motor not running
Little or no liquid delivered
Pump will not turn off
Pump cycles constantly
12
Cause
Tripped thermal protector
Open circuit breaker or blown fuse
Defective motor
Low voltage
Pump clogged
Air locked
Low voltage
System head too high
Pump clogged / rotating parts binding
Improper check valve direction
System head too high
Pump clogged
Level control defective or switch not
properly positioned
Improper check valve direction
Inflow excessive for size of pump
Level control defective or switch not
properly positioned
Remedy
Check that all pump functions and
components are operating correctly. Allow
the unit to cool for 30 minutes. If the
thermal protector does not reset and no
other causation exists, replace the pump.
Check that the unit is securely plugged in.
Have an electrician check all wiring for
proper connections and adequate voltage
and fuse sizes.
Replace the pump.
If the voltage is under the recommended
minimum, check the size of the wiring
from the main switch on the property. If
the main switch is up to code, contact
power company or hydro authority.
Flush the piping system and clean the
pump casing.
Turn off the pump, clean out the anti-
airlock hole, restart the pump.
If the voltage is under the recommended
minimum, check the size of the wiring
from the main switch on the property. If
the main switch is up to code, contact
power company or hydro authority.
Purchase different pump or adjust
system.
Flush the piping system and clean the
pump casing.
Remove check valve and examine for
freedom of operation and proper
installation.
Purchase different pump or adjust
system.
Flush the piping system and clean the
pump casing.
Install pump as shown in installation
section. If problem persists, replace
switch.
Remove check valve and examine for
freedom of operation and proper
installation.
Purchase different pump appropriate for
your system.
Install pump as shown in installation
section. If problem persists, replace
switch.
Sump and Effluent Pump INSTRUCTION MANUAL
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