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Idiomas disponibles
Idiomas disponibles
Troubleshooting
Problem
Pump not plugged in.
Circuit breaker off or fuse removed. Turn on circuit breaker or replace fuse.
Pump does not
Defective motor.
turn on
Float switch or other level controls
not functioning correctly
Pump is air locked.
Pump will not shut
Liquid inflow matches pump capac-
off
ity.
Check valve installed backwards.
Pump runs but
Check valve stuck or plugged.
does not discharge
liquid
Lift too high for pump.
Inlet to impeller plugged.
Pump is air locked.
Lift too high for pump.
Pump does not
Low voltage, speed too slow.
deliver rated
Impeller or discharge pipe is
capacity
clogged.
Impeller wear due to abrasives.
No check valve in long discharge
pipe allowing liquid to drain back
Pump cycles con-
into basin.
tinuously
Check valve leaking.
Basin too small for inflow.
There should be a bleed hole in the
discharge pipe that allows trapped
Water sprays out of
air to escape from the pump, pre-
a hole in the dis-
venting air lock.
charge pipe.
Water spraying out of this hole is
completely normal.
Probable Causes
Corrective Action
Plug in pump.
Replace pump.
Refer to the float switch manual.
Remove pump and clean air bleed hole.
Larger pump required.
Check flow indicating arrow on check valve
body to ensure proper installation.
Remove check valve and inspect for proper
operation.
Check rated pump performance.
Pull pump and clean.
Remove pump and clean air bleed hole.
Check rated pump performance.
Check that supply voltage matches the name-
plate rating.
Pull pump and clean. Check pipe for scale or
corrosion.
Replace pump.
Install a check valve in discharge line.
Inspect check valve for correct operation.
Install larger basin.
No corrective action is required.
MAINTENANCE
Troubleshooting
7
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