Liberty Pumps Pro370-Series - Manual (Page 7)

©Copyright 2012 Liberty Pumps Inc. All rights reserved 7
Fig. 5 – Direct Wiring of 115V or 208-230V,
Single Phase, Automatic Pumps
TEMPORARY
MANUAL
OPERATION DO! DON’T!
Fig. 4 Piggyback plug installation.

Risk of electric shock. Always disconnect the pump from the power source before handling or making adjustments.

The electrical connections and wiring for a pump installation should only be made by qualified personnel.

This pump is supplied with a grounding conductor or a grounding-type attachment plug. To reduce the risk of electric shock, be
certain that the grounding conductor is connected only to a properly grounded control panel or, if equipped with a grounding-type
plug, that it is connected to a properly grounded, grounding-type receptacle.

Do not bypass grounding wires or remove ground prong from attachment plugs.

Do not remove cord and strain relief, and do not connect conduit to pump.

Do not use an extension cord.

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.

The installation must be in accordance with the National Electric Code and all applicable local codes and ordinances.
All P370 and P380 models come factory-equipped with the float switch mounted on the QuickTree ® assembly. These models come
with two cords - one to the float switch and the other to the pump motor. The switch cord has a series (piggyback) plug enabling the
pump (motor) cord to be plugged into the back of it (See Fig.4). The purpose of this design is to allow manual operation of the pump.
For automatic operation the two cords should be interconnected and plugged into a separately fused, grounded outlet of proper amp
capacity for your selected pump model. (See Section 1, General Information, or the pump nameplate for electrical specifications of
your model.) Both cords are equipped with 3-prong plugs and must be plugged into a properly grounded 3-wire receptacle. DO NOT
REMOVE THE GROUND PRONGS.
For manual operation, or in the event of switch failure, the
pump cord can be separated and plugged into the electrical
outlet, directly bypassing the switch. 208-230V single phase
pumps should only be operated without the float switch by
using the circuit breaker or panel disconnect. Do not let the
pump run dry for extended periods.
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. 5
for direct wire installation of single phase, automatic pumps.
In 208-230V installations, one side on
the line going to the pump is always
“hot”, whether the float switch is on or
off. To avoid hazards, install a double
pole disconnect near the pump
installation.
5. Electrical Service and Operation
Figure C – Direct wiring of 115V or 208-230V, single
phase, automatic pumps.