Troubleshooting; Corrective Action - Little Giant 16 G Serie Manual Del Propietário

MAINTENANCE

Troubleshooting

Troubleshooting
Problem
Pump is not plugged in.
Circuit breaker is off or fuse is removed.
Accumulation of trash on float
Pump does not turn on.
Float obstruction.
Defective switch.
Defective motor.
Float or float rod obstruction.
Pump is air locked
Pump will not shut off.
Liquid inflow matches pump capacity.
Defective switch.
Check valve installed backwards.
Check valve stuck or plugged.
Pump runs but does not dis-
charge liquid. Lift too high for pump.
Inlet to impeller plugged.
Pump is air locked
Lift too high for pump.
Low voltage, speed too slow.
Pump does not deliver rated
capacity.
Impeller or discharge pipe is clogged.
Impeller wear due to abrasives.
No check valve in long discharge pipe allowing
water to drain back into basin.
Pump cycles continually.
Check valve leaking.
Basin too small for inflow.
This pump comes with a bleed hole that allows
Water sprays out of a hole
trapped air to escape from the pump, prevent-
by a bolt on the base of the
ing air lock. Water spraying out of this hole is
unit.
completely normal.
For technical assistance, parts, or repair, please contact:
800.701.7894 | littlegiant.com
Form 10000004738 Rev. 001 12/20
Probable Causes

Corrective Action

Plug in the pump.
Turn on circuit breaker or replace fuse.
Clean float.
Clean float path and provide clearance.
Replace switch
Replace pump.
Check float and float rod path and provide clearance.
Remove pump and clean air bleed hole.
Larger pump required.
Replace switch
Check flow indicating arrow on check valve body to ensure proper installa-
tion.
Remove check valve and inspect for proper installation.
Check rated pump performance.
Pull pump and clean.
Remove pump and clean air bleed hole.
Check rated pump performance.
Check that supply voltage matches nameplate rating.
Pull pump and clean. Check pipe for scale or corrosion.
Replace worn impeller.
Install a check valve in the discharge line.
Inspect check valve for correct operation.
Install larger basin.
No corrective action is required.
Franklin Electric Co., Inc. | Oklahoma City, OK 73157-2010
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