Little Giant NK-1 Serie Manual Del Propietário página 4

MAINTENANCE
Troubleshooting
MAINTENANCE
Keep pump clean and in a well-maintained condition at all times. Pump should be thoroughly cleaned
for storage.
• The pump and surrounding areas may be covered with water. Never plug or unplug the device while
standing in wet or damp surfaces.
• Disconnect the power at the main electrical service box by switching the appropriate circuit breaker
or removing fuse.
• To clean the impeller from buildup of debris, remove the base plate and pumping head with an
Allen wrench.
Troubleshooting
Problem
Pump is not plugged in
Circuit breaker is off or
Pump does not
fuse is removed
turn on
Defective switch
Defective motor
Defective switch
Pump is air locked
Pump will not shut
Liquid inflow matches or
off
exceeds pump output
capacity
Frozen water in discharge
hose
Lift too high for pump
Inlet to impeller plugged Pull pump and clean.
Pump runs but
does not dis-
Outlet flow is blocked
charge liquid
Frozen water in discharge
hose
Lift too high for pump
Low voltage, speed too
slow
Pump does not
deliver rated
Impeller or discharge
capacity
pipe is clogged
Discharge hose diameter
is too small
4
Probable Causes Corrective Action
Plug in the pump.
Turn on circuit breaker or replace fuse.
Replace pump.
Replace pump.
Replace pump.
Shut power off for approximately 1 minute, then restart. Repeat
several times to clear air from pump.
Multiple or larger pump required.
Thaw hose or replace hose.
Check rated pump performance.
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 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.