Liberty Pumps Engineered Pump Systems (EPS) - Manual (Page 3)

©Copyright 2014 Liberty Pumps Inc. All rights reserved 3
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Precautions / Pre-Installation

Risk of electric shock. Always disconnect the pump from the power source before handling or making adjustments.

These pumps are not to be installed in locations classified as hazardous in accordance with the National Electric Code, ANSI/NFPA
70.

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 system requires separate, properly fused and grounded branch circuit. Make sure the power source is properly sized for the
voltage and amperage requirements of the system, as noted on the nameplate.

The installation must be in accordance with the National Electric Code and all applicable local codes and ordinances.

Sump and sewage pumps often handle materials which could cause illness or disease. Wear adequate protective
clothing when working on a used pump or piping.

Never enter a pump basin after it has been used. Sewage and effluent can emit several gases which are poisonous.
Pre-installation checklist:
1. Inspect the unit upon arrival to ensure that there is
no shipping damage. Pay careful attention to the
condition of the fiberglass basin, control floats,
pump guide rail brackets, and control panel. Notify
the carrier immediately if there is any damage.
2. Read all instructions and familiarize yourself with
the unit’s operation prior to proceeding with the
installation.
3. A qualified licensed electrician should install and
test all electrical circuits.
4. Check to ensure that your power source is adequate
to handle the pump amperage as noted above and on
the pump nameplate. Ensure that the electrical supply
circuit is equipped with fuses or breakers of the proper
capacity.
5. A separate 115V branch circuit should be installed for
the control circuit. We do not recommend splitting
the incoming pump power circuit to power the control
circuit.
6. All electrical connections should be tested to ensure
that a proper ground has been established
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Installation Instructions
1. Excavation: Excavate the hole for the basin as small as possible, with a minimum base diameter at least 2”
wider than the diameter of the anti-floatation flange. Never place the basin in direct contact with rocks or other
sharp objects. Place enough fine, 1/8" to 3/4" pea gravel or 1/8" to 1/2" washed, crushed stone at the bottom of
the excavation to create a minimum of 12 inches stone or gravel after compaction. Do not use sand or native soil
as backfill*. Properly compact underneath the basin to provide a solid, level base that can support the weight of
the filled basin. If a concrete pad will be used under the basin, the compacted stone sub-base can be reduced to
6 inches.
2. Connections & Backfill: Pour enough concrete over and around the anti-floatation flange to anchor the basin
and prevent upward movement. Connect schedule 80 PVC pipe to the pump discharge. Do not increase the
discharge piping to a larger size than the pump can handle. The remainder of the discharge line should be as
short as possible with a minimum number of turns. Connect the inlet line to the inlet hub that was included with
the system. Connect the electrical coupling to 2” electrical conduit and run the power and float cords through the
conduit to the control panel. The remaining backfill should be only fine, 1/8" to 3/4" pea gravel or 1/8" to 1/2"
washed, crushed stone. Do not use sand or native soil as backfill*. Do Not exert heavy pressure or run heavy
equipment over the backfill material, as it may cause tank collapse.
*Other backfill options may be available – consult the factory for special instructions relative to your situation.