Install Instructions

10 | EN Copyright © Liberty Pumps, Inc. 2022 All rights reserved. 7034000N
Quarterly
1. Check pumps for corrosion and wear.
2. Check for free and unobstructed float switch operation and
float switch condition.
3. Inspect for proper check valve operation.
4. For multiple pumps, check for balanced operating times.
Uneven times indicate a defective unit, float switch or control.
5. Inspect the control panel for any presence of moisture in
enclosure, loose connections, and general component
condition.
Annually
1. Inspect and clean basin. Replace any defective components.
Troubleshooting
Refer to Table 2 for troubleshooting guidance.
No repair work shall be carried out during the warranty period
without prior factory approval. To do so may void the warranty.
Liberty Pumps, Inc. assumes no responsibility for damage or injury
due to disassembly in the field. Disassembly, other than an
authorized repair facility approved by Liberty Pumps or its
authorized service centers, automatically voids warranty.
Table 2. Troubleshooting Matrix
Problem Possible Cause Corrective Action
Pump does not start.
Damaged power or control cord. Replace as needed.
Control panel selector switch in OFF position. Set selector switch to Hand or Auto position.
Blown control circuit transformer fuse. Replace fuse.
Tripped circuit breaker, tripped GFCI, blown fuse,
or other interruption of power.
Reset tripped circuit breaker, reset GFCI, replace blown
fuse with properly sized fuse, check that the unit is
securely plugged in, investigate power interruption.
Improper voltage.
Have an electrician check all wiring for proper
connections and adequate voltage and capacity.
Float switch unable to move to pump ON
position due to interference in basin or other
obstruction.
Position pump or float switch so that it has adequate
clearance for free movement.
Insufficient liquid level.
Verify liquid level is allowed to rise enough to activate
float switch(es).
Defective float switch. Replace float switch.
Obstructed impeller or volute. Remove obstruction.
Loose wiring connections. Check and tighten all connections.
Pump runs, but does
not turn off.
Pump is airlocked. Turn pump off and let set for several minutes, then restart.
Control panel selector switch in Hand position. Set selector switch to Auto position.
Float switch unable to move to pump OFF
position due to interference with the side of
basin or other obstruction.
Position pump or float switch(es) so that it has adequate
clearance for free movement.
Control panel failure. Check control panel.
Defective float switch. Replace float switch.
Missing or faulty curb stop/swing check valve
allowing system pressure to feed back through
discharge piping.
Verify presence of a curb stop check valve or replace curb
stop/swing check valve assembly.
Rupture or failure of
discharge plumbing
either inside or outside
of the basin.
Missing or faulty curb stop/swing check valve
allowing system pressure to feed back through
discharge piping.
Verify presence of a curb stop check valve or replace curb
stop/swing check valve assembly.