Liberty Pumps Engineered Pump Systems User Manual

IMPORTANT:

Prior to installation, record Model, Serial Number, and
Code Number from pump nameplate for future reference.

MODEL ________________________

SERIAL ______________________

CODE ______________________

INSTALLATION
DATE _______________________

Installation Manual

7298000B

Manual Contents:

1. General Information

2. Precautions / Pre-Installation

3. Installation Instructions

4. Maintenance & Troubleshooting

5. Guide rail Assembly

Engineered Pump Systems (EPS)

7000 Apple Tree Avenue
Bergen, NY 14416
Phone: [phone]
Fax: [phone]
www.libertypumps.com

By definition, an EPS system is a custom product and some differences in materials, pumps, and
design are unavoidable. This manual is intended as a generic guideline only. Any specific questions
should be directed to Technical Customer Service Department at the Liberty Pumps Factory
(PH: 1-800-543-2550, E: [e-mail])

Common Components:

 Fiberglass Tank

 Sump, Effluent, Sewage or Grinder Pump(s)

 Factory Installed Guide Rail System

 Pre-mounted float system

 NEMA 4X Junction Box

 Inlet hub

 Control Panel or Alarm System

©Copyright 2014 Liberty Pumps Inc. All rights reserved 1

1 General Information

®

General information about a particular EPS can be found on a stamped metal tag that is located on the basin
cover. This will identify the EPS model number as well as the horsepower, voltage, and amp draw for the
pumps. Separate tags are located on the pump(s). Duplicate pump tags are packaged with the system. These
should be mounted on the tank cover or at the control panel for accessibility and immediate knowledge of the
pump(s) installed.

The pump and the control panel are supplied with their own separate Installation/Operation/Maintenance manuals.

Ensure that you have received these manuals, and that you read and understand them prior to installing this unit. Your familiarity with
the pump manual and the control panel manual is critical. This installation manual gives a brief overview of the system, and deals mainly
with inspection and installation of the basin, but it does not cover the specifics of the pump operation or the control panel operation. If
you have any questions, call customer service at [phone].

©Copyright 2014 Liberty Pumps Inc. All rights reserved 2

2 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

3 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.

©Copyright 2014 Liberty Pumps Inc. All rights reserved 3

EPS

System

Figure A – Inlet Venting

3. Venting: The fiberglass basin provided

with the system must be completely sealed
and properly vented in order to meet health
and plumbing code requirements. The
system is designed to be vented through
the inlet to an existing building vent stack.
In order to accomplish this, there must be
no traps between the system inlet and the
nearest building vent stack connection.
See Figure A for an example. If this is not
possible or desirable in your application, a
vent flange or grommet can be installed in
a hole cut into the solid fiberglass cover.

4. Control Panel:

Risk of Electric shock: This pump is supplied with a grounding conductor. To reduce the risk of

electric shock, be certain that it is connected only to a properly grounded earth wire. All electrical circuitry should be
installed in accordance with the National Electric Code (NEC) and all applicable local codes or ordinances.

The control panel or alarm that is an integral part of this complete unit is supplied with its own
separate Installation/Operation/Maintenance manual. Ensure that you have received this manual, and that you read
and understand it prior to installing this unit. Your familiarity with the control panel manual is critical.

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. Connect the grinder pump leads and the float switch leads
to the control panel in accordance with the instructions included with those units.

5. Float Switches: The EPS is commonly supplied with a control panel that will either use float switches or a

pressure transducer to detect the water level in the basin. The float switches are pre-mounted on a quick tree.
For quick tree removal, loosen the cord nut and pull the tree straight out of the tank. The pump cycle is pre-set at
the factory, but may need to be modified depending on the depth in which the inlet hub is installed. Please call
the factory if you need to adjust the pump cycle beyond this recommended level.

6. Testing and Startup: Follow the testing and startup procedures found in the pump and control panel manual.

©Copyright 2014 Liberty Pumps Inc. All rights reserved 4