Liberty Pumps ProVore PRG101A User manual

©Copyright 2013 Liberty Pumps Inc. All rights reserved
Models:
PRG101A
1 hp, 115V, 1 phase, Automatic Switch, 10’ Power cord
PRG101A-2
1 hp, 115V, 1 phase, Automatic Switch, 25’ Power cord
PRG101M
1 hp, 115V, 1 phase, 10’ Power cord
PRG101M-2
1 hp, 115V, 1 phase, 25’ Power cord
PRG102A
1 hp, 230V, 1 phase, Automatic Switch, 10’ Power cord
PRG102A-2
1 hp, 230V, 1 phase, Automatic Switch, 25’ Power cord
PRG102M
1 hp, 230V, 1 phase, 10’ Power cord
PRG102M-2
1 hp, 230V, 1 phase, 25’ Power cord
*Do not throw away or lose this manual.
Contents
 General Information
 Introduction
 Mechanical Installation
 Electrical Connection
 Operation
 Troubleshooting
 Warranty
Installation Manual 2399000B
ProVore® Residential Grinder Pumps
IMPORTANT:
Prior to installation, record Model, Serial
Number, and Code Number from pump
nameplate for future reference.
MODEL _____________________
SERIAL _____________________
CODE _____________________
INSTALLATION
DATE _____________________
7000 Apple Tree Avenue
Bergen, NY 14416
Phone: [phone]
Fax: [phone]
www.libertypumps.com

©Copyright 2013 Liberty Pumps Inc. All rights reserved - 2 -
1. X General Information X
Before installation, read the following instructions carefully. Each Liberty pump is individually factory tested to insure proper
performance. Closely following these instructions will eliminate potential operating problems, assuring years of trouble-free
service.
 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 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.
 DO NOT bypass grounding wires or remove ground prong from attachment plugs.
 DO NOT use an extension cord.
 This pump requires a separate, properly fused and grounded branch circuit. Make sure the power source is
properly sized for the voltage and amperage requirements of the pump, as noted on the nameplate.
 The electrical outlet 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, Uniform Plumbing Code, International
Plumbing Code, as well as 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.
 Keep clear of suction and discharge openings. To prevent injury, never insert fingers into pump while it is
plugged in.
 DO NOT use this product for flammable or corrosive liquid.
 DO NOT use this product in applications where human contact with the pumped fluid is common (such as
swimming pools, fountains, etc.)
 NEVER dispose of materials such as paint thinner or other chemicals down drains, as they can chemically attack
and damage pump components, potentially causing product malfunction or failure.
 DO NOT run pump dry, this product is intended to be partway submerged when operating.
 Do not use these pumps in water over 140 F.
 The Uniform Plumbing Code (UPC) states that sewage systems shall have an audio and visual alarm that signals
a malfunction of the system, to reduce the potential for property damage.
 A 20 amp breaker is recommended for 115V pumps.
 Note: Manual models (“M”
suffix), require a separate
approved pump control device or
panel for automatic operation.
Operation of these models will be
according to the control selected.
Make sure the electrical
specifications of the control
selected properly match the
electrical specifications of the
pump. Always refer to control
panel instructions for proper
installation.
Model
HP
Volts
Phase
Full
Load
Amps
FNPT
Discharge
Automatic or
Manual*
PRG101A
1
115
1
12
2”
Automatic
PRG101A-2
1
115
1
12
2”
Automatic
PRG101M
1
115
1
12
2”
Manual
PRG101M-2
1
115
1
12
2”
Manual
PRG102A
1
230
1
6
2”
Automatic
PRG102A-2
1
230
1
6
2”
Automatic
PRG102M
1
230
1
6
2”
Manual
PRG102M-2
1
230
1
6
2”
Manual

©Copyright 2013 Liberty Pumps Inc. All rights reserved - 3 -
2. x Introduction x
INTRODUCTION
This manual was prepared to assist you in the correct installation, operation, and maintenance of your Liberty
pump. Please read it completely before installing the pump. Make certain that you are familiar with the contents,
and the chapters on installation and operation are fully understood before running the pump.
Liberty Pumps are designed for minimal maintenance. However, regular checks will ensure longer life and
greater operating reliability.
WARRANTY: No repair work should be carried out during the warranty period without prior factory approval. To
do so may render the warranty void.
SERIAL #: In all correspondence and reports, make certain that the pump serial number is given.
DESIGN OF PUMP
The grinder pump contains metal parts that rotate at high speeds. Be careful around
pump base while power is connected. Make sure that the pump is either in the tank or
clear from people and wires when in operation.
1. Liberty ProVore® Series grinder pumps are designed for continuous underwater operation. The motor and
pump form a close coupled, watertight unit. The induction motor is insulated against heat and moisture, Class
B insulation.
2. A thermal overload protector is imbedded in the stator windings. This is connected in series and wired to shut
down the pump if overheating occurs. The overload switch resets automatically when the motor cools.
3. The motor is protected against damage from water entry by a mechanical type cartridge seal with two silicon-
carbide faces.
4. The impeller and volute are designed for efficient flow characteristics and clog-free operation. The hardened
cutters grind solids and fibrous matter into small particles that can be safely pumped through small diameter
piping.
5. For sewage systems, consult local plumbing codes on requirements for venting the tank. The pump shall not
be installed in locations classified as hazardous in accordance with the National Electrical Code, ANSI/
NFPA70.
NOTE: The primary material of the Liberty PRG Series Pumps is cast iron, elastomers are Buna-N. They
should not be used to pump corrosive liquids.
3. X Mechanical Installation x
INSPECTION UPON RECEIPT
The shipping container should be immediately inspected for damage that may have occurred in shipment.
Exercise care in opening the shipping container to avoid damage to the pump. Remove any blocking and
cushioning from within the container.
Check all cushioning for spare parts before discarding. Visually check the pump and any spare parts for damage.
Check for damaged electrical wires, especially where they exit the motor housing. Contact the Liberty Pumps
Customer Service Department to report any damage or shortage of parts. The cutter located on the bottom of the
unit should be turned several rotations with the use of a 6 mm hex wrench, it should rotate freely without rubbing
on the cutter plate. This will insure that the impeller and cutter are free of any seizure due to prolonged storage.
If the impeller is not rotated manually prior to installation, the pump may fail to activate. If the impeller’s rotation is
difficult or completely resistant, contact the Liberty Pumps Customer Service Department.

©Copyright 2013 Liberty Pumps Inc. All rights reserved - 4 -
STORAGE BEFORE USE
Liberty pumps are shipped from the factory ready for installation and use. They should be held in storage if the
pump station is not complete. If storage is necessary, the pump should remain in its shipping container. It should
be stored in a warehouse or storage shed that has a clean, dry temperature-stable area where the pump and its
container should be covered to protect it from water, dirt, dust, etc. The ends of the cables - (plugs) must be
protected against moisture.
AT NO TIME SHOULD THE PUMP BE STORED WITHIN AN INCOMPLETE WET PIT. THE PUMP
SHOULD NOT BE PLACED INTO THE PIT UNTIL IT CAN BE FULLY OPERATED.
LONG TERM STORAGE
1. If it is necessary to store a pump for a long period of time, it should be stored indoors in a clean, dry
temperature-stable environment. The pump should be covered to protect it from dust, dirt and water. The
plug end of the cable must be protected against moisture.
2. Do not allow the pump to freeze.
3. Prior to installation, the pump motor should be rotated to ensure the seals and cutters are free spinning.
4. Installed pumps which are idle for long periods of time should be manually operated through the breaker
panel once a month to lubricate the seals. Turn off the breaker, unplug the piggyback switch, and plug the
pump directly into the wall socket. Turn the breaker on for 30 seconds. Turn the breaker off, and then plug
the piggyback switch back in.
4. x The Basin x
The basin required for both effluent and sewage applications must be sealed and vented to meet health and
plumbing code requirements. These pumps are not to be installed in locations classified as hazardous in
accordance with the National Electric Code, ANSI/NFPA 70. The diameter should be a minimum of 18" and the
depth a minimum of 24". (These are minimum requirements. A larger basin may be required in both effluent and
sewage applications depending on local codes and the number of fixture units entering the system. Check with the
local authorities or contact Liberty Pumps if you are unsure of the proper basin size.) Installation should be at a
sufficient depth to ensure that all plumbing is below the frost line. If this is not feasible, remove the check valve and
size the basin and/or adjust pump differential to accommodate the additional backflow volume.
A. Excavation: Excavate the hole as small as possible, with a minimum recommended 8" diametrical clearance
around the tank. Never place the basin directly in contact with rocks or other sharp objects. Place only fine,
1/8" to 3/4" pea gravel or 1/8" to 1/2" washed, crushed stone as bedding between the basin and the hole
walls. 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.
B. Inlet Connection & Initial Backfill: Only fine, 1/8" to 3/4" pea gravel or 1/8" to 1/2" washed, crushed stone
should be used around the bottom of the basin to hold it in place. Do not use sand or native soil as backfill.
Make the inlet connection as required for your basin.
Liberty P380, & P680: The Liberty Pro Series basins have a 4" inlet molded to the side of the tank. This inlet
is sized to accept a 4" no-hub type coupling. Connect the gravity drainage line from
the fixtures to this hub.
Other Basins: Other Liberty basins provide a 4" caulking hub or pipe grommet inlet. Hubs utilize
caulking material or rubber donuts; grommets are a simple slip-fit. Connect the
gravity drainage line from the fixtures to this opening. (Other inlet sizes available –
consult factory.)
C. Final Backfill: Large rocks, clods, and foreign objects should be kept out of the backfill material. Only fine,
1/4" to 3/4" pea gravel, or 1/8" to 1/2" washed, crushed stone is recommended. Do not use sand or native
soil as backfill. Mound the backfill slightly and allow for natural settling. Provide access to the basin cover for
maintenance and service.
Do not exert heavy pressure or run heavy equipment on the backfill material as this could cause
the tank to collapse.

©Copyright 2013 Liberty Pumps Inc. All rights reserved - 5 -
5. X Installation of the Pump x
THIS PUMP IS NOT TO BE INSTALLED IN LOCATIONS CLASSIFIED AS HAZARDOUS IN
ACCORDANCE WITH THE NATIONAL ELECTRICAL CODE,ANSI/NFPA 70.
Grinder pumps must be installed in a tank that is vented in accordance with local plumbing codes.
Installation should be at a sufficient depth to ensure that all plumbing is below the frost line. If this is not feasible,
remove the check valve and size the basin and/or adjust pump differential to accommodate the additional
backflow volume. Consult the factory for details on how this should be done.
6.x Electrical Service & Operation x
 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 prongs 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.
When the risk of property damage from high water levels exists, an independent high water
alarm should be installed. A duplex pumping system is recommended for critical installations.
Typical simplex installation