Liberty Pumps HT40-Series - Manual (Page 4)

©Copyright 2012 Liberty Pumps Inc. All rights reserved 4
Fig. 2 – Direct Wiring of 115V or 208-230V,
Single Phase, Automatic Pumps

Risk of electric shock. Always disconnect the pump from the power source before handling or making adjustments.

This pump is supplied with a grounding conductor and grounding-type attachment plug. To reduce the risk of electric shock, be
certain that it is connected only to a properly grounded, grounding-type receptacle. This receptacle should be protected by a
ground fault circuit interrupter (GFCI

Never remove the ground pin from the plug.

Do not use an extension cord.

All electrical circuitry should be installed by qualified personnel in accordance with the National Electric Code (NEC) and all
applicable local codes or ordinances.

This pump requires separate, properly fused and grounded branch circuit. Make sure the power source is properly sized for the
voltage and amperage requirements of the motor, as noted on the pump nameplate.

The electrical outlet or panel shall be within the length limitations of the pump power cord, and at least 4 feet above floor level to
minimize possible hazards from flood conditions.
If the pump is to be wired directly into a control device or junction box,
and it is necessary to remove the plugs, have a certified electrician do
the wiring in accordance with the National Electric Code and applicable
local codes. See Fig. 2 for direct wire installation of single phase
automatic pumps.
Risk of electric shock. Always disconnect the pump from the power source before handling or making
adjustments.
Problem Cause Correction
Pump will not run.
 Blown fuse or other interruption of
power; improper voltage.
 Check that the unit is securely plugged in.
Have an electrician check all wiring for proper
connections and adequate voltage and
capacity.
 Switch is unable to move to the
“turn on” position due to
interference with the side of basin
or other obstruction
 Position the pump or switch so that it has
adequate clearance for free operation.
 Insufficient liquid level.
 Make sure the liquid level is allowed to rise
enough to activate switch(s).
 Defective switch.  Remove and replace switch.
Pump will not turn
off.
 Switch(s) unable to move to the
“turn off” position due to
interference with the side of basin
or other obstacle.
 Position the pump or switch so that it has
adequate clearance for free operation.
 Defective switch.  Remove and replace switch.
3. Maintenance and Troubleshooting