Liberty Pumps LGV Series User Manual

Copyright © Liberty Pumps, Inc. 2022 All rights reserved.
Installation Manual
For pressure sewer applications, verify a Redundant
Check Valve Assembly (curb stop and check valve) is
installed between the pump discharge and the street
main, as close to the public right-of-way as possible, on all
installations to protect from system pressures.
Installer: manual must remain with owner or
system operator/maintainer.
Record information from pump nameplate:
Model:
Serial:
Control Panel:
Mfg Date:
Install Date:
Dealer:
Dealer Ph:
7000 Apple Tree Avenue
Bergen, NY 14416
ph: 1-800-543-2550
fax: 1-585-494-1839
www.LibertyPumps.com/LEP
60 Hz
7550000H
LGV-Series
LGH-Series
Ordinary Location Models
XLGV-Series
XLGH-Series
Approved for Hazardous Locations
Class 1, Division 1, Groups C and D T4
Class 1, Zone 1, Groups IIA
and IIB T4
3–15 hp
Submersible
Grinder Pumps

Liberty Pumps LGV Series Specifications

General

Brand	Liberty Pumps
Model	LGV Series
Category	Water Pump
Language	English

Summary

Safety Precautions

Safety Guidelines

Defines safety alert symbols used throughout the manual.

Applicable to Non-Hazardous Locations

Applicable to Hazardous Locations

General Information

Operating Constraints

Model Specifications

Inspection and Storage

Initial Inspection

Instructions for checking the pump for damage upon receipt.

Storage Before Use

Pump System Components

Control Panel

Information on required control panels and their specifications.

Control Panels in Hazardous Locations

Specific requirements for control panels used in hazardous areas.

Thermostats

Explains the role and operation of embedded motor thermostats.

Overload Protection

Power and Control Cords

Seal Failure Probes

Wiring Instructions

Permanent Cord 1-Phase Wiring

Wiring diagram and guidance for 1-phase pumps with permanent cords.

Permanent Cord 3-Phase Wiring

Dual Voltage 3-Phase Pumps

Dual Voltage Hazardous Locations Pumps

Rewire Dual Voltage Pumps

Preparation

Install Pump Control and Alarm Floats

Guidance on positioning control and alarm floats for proper operation.

Prepare Basin

Steps for cleaning and preparing the pump basin before installation.

Installation

Electrical Connections

Procedures for making electrical connections to the pump and panel.

3-Phase Pump Rotation Verification

How to check and ensure correct rotation for 3-phase pumps.

Thermostat and Seal Failure Connections

Details on connecting thermostat and seal fail probes.

Discharge

Pressure Sewer Applications

Requirements for check valves in pressure sewer discharge systems.

Vent

Guide Rail System

Guide Rail Systems in Hazardous Locations

Notes on using non-sparking guide rail systems in hazardous areas.

Operation

Starting System

Step-by-step guide for starting and testing the pump system.

Maintenance

Troubleshooting

Warranty

Liberty Engineered Products Limited Warranty

Details the limited warranty terms and conditions for Liberty Pumps.