MAINTENANCE
Troubleshooting
Franklin Electric Co., Inc.
| Oklahoma City, OK 73157-2010
800.701.7894
|
littlegiant.com
For technical assistance, parts, or repair, please contact:
Form 10000004899 Rev. 001 12/20
Copyright © 2020, Franklin Electric, Co., Inc. All rights reserved.
Cleaning Impeller and Volute
1. Remove the four bolts (1) that hold the volute to the motor housing.
Then separate the volute from the motor housing.
IMPORTANT:
Do not remove the motor housing bolts or screws (2).
2. Clean the impeller and the volute passage.
3. Be sure the impeller turns freely.
4. Reattach the volute to the motor housing and secure it with the four
bolts.
Troubleshooting
Problem
Probable Causes
Corrective Action
Pump does not turn on
Pump not plugged in.
Plug in pump.
Circuit breaker off or fuse
removed.
Turn on circuit breaker or replace fuse.
Accumulation of trash on float. Clean float.
Float obstruction.
Check float path and provide clearance.
Defective switch.
Replace switch.
Defective motor.
Replace pump.
Pump will not shut off
Float or float rod obstruction.
Check float and float rod path and provide clearance.
Pump is air locked.
Remove pump and clean air bleed hole.
Liquid inflow matches pump
capacity.
Larger pump required.
Defective switch.
Replace switch.
Pump runs but does
not discharge liquid
Check valve installed back
-
wards.
Check flow indicating arrow on check valve body to ensure proper installa
-
tion.
Check valve stuck or plugged. Remove check valve and inspect for proper operation.
Lift too high for pump.
Check rated pump performance.
Inlet to impeller plugged.
Pull pump and clean.
Pump is air locked.
Remove pump and clean air bleed hole.
Pump does not deliver
rated capacity
Lift too high for pump.
Check rated pump performance.
Low voltage, speed too slow.
Check that supply voltage matches the nameplate rating.
Impeller or discharge pipe is
clogged.
Pull pump and clean. Check pipe for scale or corrosion.
Impeller wear due to abrasives. Replace pump.
Pump cycles continu
-
ously
No check valve in long dis
-
charge pipe allowing liquid to
drain back into basin.
Install a check valve in discharge line.
Check valve leaking.
Inspect check valve for correct operation.
Basin too small for inflow.
Install larger basin.
Water sprays out of a
hole in the discharge
pipe.
There should be a bleed hole in
the discharge pipe that allows
trapped air to escape from the
pump, preventing air lock.
Water spraying out of this hole
is completely normal.
No corrective action is required.
