Corrective Action - Little Giant APCP-1700 Manual Del Propietário

MAINTENANCE
Troubleshooting
Troubleshooting
Problem
Pump is not plugged in
Circuit breaker is off or fuse is removed Turn on circuit breaker or replace fuse.
Accumulation of trash on float
Pump does not
turn on
Float obstruction
Defective switch
Defective motor
Float obstruction
Defective switch
Pump will not Pump is air locked
shut off
Liquid inflow matches or exceeds pump
output capacity
Frozen water in discharge hose
Lift too high for pump
Inlet to impeller plugged
Pump is air locked
Pump runs but does
not discharge liquid
Outlet flow is blocked
Frozen water in discharge hose
Lift too high for pump
Pump does not
Low voltage, speed too slow
deliver rated
Impeller or discharge pipe is clogged
capacity
Discharge hose diameter is too small
No check valve in long discharge pipe
allowing water to drain back onto cover
Check valve leaking
Defective switch
Pump cycles
continually Volute clogged
Float obstruction
Thermal protector activated
GFCI device activated
Obstructed pump impeller
Pump air-locked
Protector tripping
(motor overload-
ing/overheating)
Excessively high or low voltage supply Refer to
Pump, motor, bearings, or seal have
reached the end of their useful life
For technical assistance, parts, or repair, please contact:
800.701.7894 | littlegiant.com
998295 Rev. 005 06/22
Probable Causes

Corrective Action

Plug in the pump.
Remove the float access cover. Clean float.
Refer to "Float Maintenance" on page
Replace pump.
Replace pump.
Refer to "Float Maintenance" on page
Replace pump.
Shut power off for approximately 1 minute, then
restart. Repeat several times to clear air from pump. If
this does not resolve the problem, clean the vent hole.
Refer to "Maintenance" on page
Multiple or larger pump required.
Thaw hose or replace hose.
Check rated pump performance.
Pull pump and clean.
Shut power off for approximately 1 minute, then
restart. Repeat several times to clear air from pump. If
this does not resolve the problem, clean the vent hole.
Refer to "Maintenance" on page
Check outlet tubing to ensure that it is not kinked or
blocked. Clear blocked tubing of slime and debris.
Clean inlet and outlet piping.
Thaw hose or replace hose.
Check rated pump performance.
Check that supply voltage matches nameplate rating.
Pull pump and clean. Check pipe for scale or corrosion.
Replace discharge hose with larger diameter hose.
Install a check valve in the discharge line.
Inspect check valve for correct operation.
Replace pump.
Clean screen and basket.
Refer to "Float Maintenance" on page
Allow pump to cool.
Inspect all electrical connections and reset the GFCI.
Pull pump and clean. Check pipe for scale or corrosion.
Shut power off for approximately 1 minute, then
restart. Repeat several times to clear air from pump. If
this does not resolve the problem, clean the vent hole.
Refer to "Maintenance" on page
"Specifications" on page
Replace pump.
Franklin Electric Co., Inc. | Oklahoma City, OK 73157-2010
Copyright © 2022, Franklin Electric Co., Inc. All rights reserved.
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