Liberty Pumps XFL100 Serie Manuel D'installation page 9

Problem
Pump will not run.
Pump will not turn off.
Pump runs or hums, but does
not pump.
Pump runs periodically when
fixtures are not in use.
Pump operates noisily.
Seal fail light is illuminated.
Cause

Tripped breaker or other interruption of
power; improper voltage.

Switch is unable to move to the "turn on"
position due to interference with the side
of basin or other obstruction.

Insufficient liquid level.

Defective switch.

Internal motor short.

Switch(s) unable to move to the "turn off"
position due to interference with the side
of basin or other obstacle.

Defective switch.

Stuck / defective motor contactor.

Discharge is blocked or restricted.

Check valve is stuck closed or installed
backwards.

Gate or ball valve is closed.

Total lift is beyond pump's capability.

Pump impeller is jammed or volute casing
is plugged.

Pump is air locked.

Capacitor failure.

Check valve was not installed, is stuck
open or is leaking.

Fixtures are leaking.

Foreign objects in the impeller cavity.

Broken impeller.

Worn bearings.

Piping attachments to building are too
rigid.

Lower seal has been compromised.

Relay sensitivity is incorrect.
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Correction

Reset breaker by pushing completely
down on the handle then back to the on
position.

Have an electrician check all wiring for
proper connections and adequate voltage
and capacity.

Position the pump or switch so that it has
adequate clearance for free operation.

Make sure the liquid level is allowed to

Remove and replace switch.

Requires an authorized service center.

Position the pump or switch so that it has
adequate clearance for free operation.

Remove and replace switch.

Replace motor contactor in panel.

Check the discharge line for foreign mate-
rial, including ice if the discharge line
passes through or into cold areas.

Remove check valve(s) and examine for
freedom of operation and proper installa-
tion.

Open gate or ball valve.

Try to route piping to a lower level. If not
possible, a larger pump may be required.
Consult the factory.

Remove the pump from the basin. De-
tach the pump base and clean the area
around the impeller. Reassemble and
reinstall.

Clear anti-air lock hole.

Add baffle to reduce entrained air bub-

Check caps and replace if needed.

Remove check valve(s) and examine for
freedom of operation and proper installa-
tion.

Repair fixtures as required to eliminate

Remove the pump from the basin. De-
tach the pump base and clean the area
around the impeller. Reassemble and
reinstall.

Consult the factory for information regard-

Return pump to the factory or authorized

Replace a portion of the discharge line
with rubber hose or connector.

Replace lower seal.

Decrease sensitivity by turning the dial.
Proper range is 75 to 125.