
MAINTENANCE
To clean a pump clogged with debris:
⚫Unplug the pump from electrical power.
⚫Remove the screws and screen from the bottom of the pump.
⚫Remove the screws, volute, and seal gasket from the pump.
⚫Clean the debris from the impeller. Reassemble.
⚫If debris is preventing the float switch from operating properly, remove any debris from the float switch cage on the side of the pump. The bottom
portion of this cage can be removed for further cleaning.
In those instances where damages are incurred as a result of an alleged pump failure, the Homeowner must retain
possession of the pump for investigation purposes.
TROUBLESHOOTING CHECKLIST
CAUTION: SHUT OFF POWER TO THE PUMP.
1. Poor electrical connection, blown fuse,
tripped breaker, or other interruption of
power; improper power supply
1. Check all electrical connections for security. Have electrician
measure current in motor leads. If current is within± 20% of locked
rotor Amps, impeller is probably locked. If current is 0, overload
may be tripped. Remove power, allow pump to cool, then recheck
current
2. Leakage circuit breaker or motor thermal
relay trip
2. Check the circuit breaker and fuse in the good condition and well
connected. Please cool down the motor to 5 minutes when the
thermal relay trip.
3. Check winding insulation (Megger Test) and winding resistance. If
check is outside of range, dry and recheck, If still defective,
replace per service instructions
4. Float movement restricted (For float
switch version )
4. Reposition pump or clean basin as required to provide adequate
clearance for float
5. Insufficient liquid level (For float switch
Version)
5. Make sure liquid level is at least equal to suggested turn-on point
Pump hums but doesn't run
1. Check all electrical connections for security. Have electrician
measure current in motor leads If current is within± 20% of locked
rotor Amperes , impeller is probably locked. If current is 0, overload
may be tripped. Remove power, allow pump to cool , then recheck
current
2. Impeller jammed or loose on shaft, worn,
or damaged, impeller cavity or inlet
plugged
2. Check impeller for freedom of operation, security, and condition.
Clean impeller cavity and inlet of any obstruction
Pump delivers insufficient
capacity
1. Check all electrical connections for security. Have electrician
measure current in motor leads. If current is within ±20% of
locked rotor Amps, impeller is probably locked, if current is 0,
overload may be tripped. Remove power, allow pump to cool, then
recheck current
2. Excessive inflow or pump not properly
sized for application
2. Recheck all sizing calculations to determine proper pump size
3. Check discharge line for restrictions, including ice. If line passes
through or into cold areas
4. Check valve stuck closed or installed
backwards
4. Remove and examine check valve for proper installation and
freedom of operation
6. Impeller jammed or loose on shaft worn
or damaged, impeller cavity or inlet
plugged
6. Check impeller for freedom of operation, security, and condition.
Clean impeller cavity and inlet of any obstruction
7. Pump may be air locked
7. Loosen union slightly to allow trapped air to escape