Note: The 2-stage LSGX202-RE and LSGX202-REX will meet the pressure specifications of E/One® Series GP 200 and GP
2000 and Extreme Series pumps. However these progressive cavity designs have the capability to develop higher pressure
than the single stage grinder LSG202-RE and LSG202-REX. While the LSG202-RE Retro-Fit from Liberty will work in many
applications as a direct drop-in replacement for E/One®, some installations may exceed its head or pressure capabilities.
In these situations be sure to specify the LSGX202-RE or LSGX202-REX two stage grinder pump.
RE/REX-Series Pump Specifications
E-one® Core Replacement System
Fully Assembled with 2 hp. Omnivore® Grinder
LSGX202-RE, LSG202-RE - Replaces GP200 and GP2000
LSGX202-REX, LSG202-REX - Replaces Extreme D-Series
E/One® is a registered trademark of the Environment One
Corporation and is not affiliated with Liberty Pumps.
LSG202-RE_P1 9/28/2015 ©Copyright 2015 Liberty Pumps Inc. All rights reserved. Specifications subject to change without notice.
RE/REX Series Dimensional Data
LSG202-RE_P2 9/28/2015 ©Copyright 2015 Liberty Pumps Inc. All rights reserved. Specifications subject to change without notice.
RE/REX Series Electrical data
MODEL
HP
VOLTAGE
PHASE
SF
FULL
LOAD
AMPS
LOCKED
ROTOR
AMPS
THERMAL
OVERLOAD
TEMP
STATOR
WINDING
CLASS
CORD
LENGTH
FT
DISCHARGE
AUTOMATIC
LSG202-RE
2
208-230
1
1.0
15
53
135˚C
B
10
1-1/4” NPT
YES
LSG202-REX
2
208-230
1
1.0
15
53
135˚C
B
10
1-1/4” NPT
YES
LSGX202-RE
2
208-230
1
1.0
15
53
135˚C
B
10
1-1/4” NPT
YES
LSGX202-REX
2
208-230
1
1.0
15
53
135˚C
B
10
1-1/4” NPT
YES
NOTE:
LSG202-RE & LSGX202-RE HAVE SQUARE STYLE 6-PIN
ELECTRICAL CONNECTOR (For GP200 and GP2000)
LSG202-REX & LSGX202-REX HAVE ROUND 6-PIN HOODED
ELECTRICAL CONNECTOR (For Extreme D-series)
COVER
EPOXY POWDER COATED STEEL
JUNCTION BOX
NEMA 4X
DISCHARGE ELBOW
1-1/4” STAINLESS STEEL
DISCHARGE PIPING
STAINLESS STEEL
ANTI-SIPHON CHECK
VALVE
HIGH TEMP NITRILE BALL
POLYPROPYLENE FLOATING BALL
HEAVY CAST IRON BODY
IMPELLER
300 SERIES S.S.
PAINT
POWDERCOATING
MAX LIQUID TEMP
140˚F/ 60˚C
MAX STATOR TEMP
275˚F/ 135˚C
THERMAL OVERLOAD
275˚F/ 135˚C
POWER CORD TYPE
SJOOW CORD WITH IP68 PANEL
WITH TYPE TC CORD TO PRE-INSTALLED
CONNECTOR FOR INTERFACE TO E-ONE®
UNIT
MOTOR HOUSING
CLASS 25 CAST IRON
VOLUTE
CLASS 25 CAST IRON
SHAFT
300 SERIES S.S.
HARDWARE
STAINLESS
ORINGS
BUNA N
MECHANICAL SEAL
UNITIZED SILICON CARBIDE
MIN BEARING LIFE
50,000 HRS
WEIGHT
117 LBS
RE/REX Series Technical Data
LSG202-RE_P3 9/28/2015 ©Copyright 2015 Liberty Pumps Inc. All rights reserved. Specifications subject to change without notice.
RE/REX Series Specifications
1.01 GENERAL:
The contractor shall provide labor, material, equipment, and incidentals required to provide (QTY) centrifugal grinder pumps as specified
herein. The pump models covered in this specification are Series LSG/LSGX200 grinder pumps. The pump furnished for this application shall be
model ______________as manufactured by Liberty pumps.
2.01 OPERATING CONDITIONS:
Each submersible pump shall be rated at 2 hp_____ volts _______ phase 60 Hz. 3450 RPM. The unit shall produce ______G.P.M. at ______ feet
of total dynamic head.
The submersible pump shall be capable of handling residential and commercial sewage and grinding it to a fine slurry enabling it to be pumped over
long distances in pipelines as small as 1.25" in diameter. The LSG series single stage submersible pump shall have a shut-off head of 108 feet and
a maximum flow of 50 GPM @ 10 feet of total dynamic head. The LSGX series two stage submersible pump shall have a shut-off head of 185 feet
and a maximum flow of 38 GPM @ 10 feet of total dynamic head.
3.01 CONSTRUCTION:
Each centrifugal grinder pump shall be equal to the certified Series LSG/LSGX Grinder pumps as manufactured by Liberty Pumps, Bergen
NY. The castings shall be constructed of class 25 cast iron. The motor housing shall be oil filled to dissipate heat. Air filled motors shall not be
considered equal since they do not properly dissipate heat from the motor. All mating parts shall be machined and sealed with a Buna-N o-ring. All
fasteners exposed to the liquid shall be stainless steel. The motor shall be protected on the top side with sealed cord entry plate with molded pins to
conduct electricity eliminating the ability of water to enter internally through the cord. The motor shall be protected on the lower side with a dual seal
arrangement. The first seal is a double lip seal molded in FKM fluoroelastomer or Buna N.
The second / main seal shall be a unitized hard face silicon carbide seal with stainless steel housings and spring.
The upper and lower bearing shall be capable of handling all radial thrust loads. The lower bearing shall have the additional ability to handle the
downward axial thrust produced by the impeller and cutters by design of angular contact roller races. The pump housing shall be of the concentric
design thereby equalizing the pressure forces inside the housing which will extend the service life of the seals and bearings. Additionally there shall
be no cutwater in the housing volute in order to discourage the entrapment of flowing debris. The pump shall be furnished with stainless steel handle
having a nitrile grip.
4.01 ELECTRICAL POWER CORD
The submersible pump shall be supplied with 10 feet of multiconductor power cord. It shall be cord type SJOOW (1-phase) or SEOOW (3-phase),
capable of continued exposure to the pumped liquid. The power cord shall be sized for the rated full load amps of the pump in accordance with the
National Electric Code. The power cable shall not enter the motor housing directly but will conduct electricity to the motor by means of a water tight
compression fitting cord plate assembly, with molded pins to conduct electricity. This will eliminate the ability of water to enter internally through the
cord, by means of a damaged or wicking cord.
5.01 MOTORS
Single phase motors shall be oil filled, capacitor start / capacitor run, class B insulated NEMA B design, rated for continuous duty. At maximum load
the winding temperature shall not exceed 135 degrees C unsubmerged. Since air filled motors are not capable of dissipating heat they shall not be
considered equal. The pump motor shall have an integral thermal overload switch in the windings for protecting the motor. The capacitor circuit shall
be mounted internally in the pump. Motors shall have an integral solid state starting circuit switch for switching the start winding off.
6.01 BEARINGS AND SHAFT
An upper radial and lower thrust bearing shall be required. The upper bearing shall be a single ball / race type bearing. The lower bearing shall be
an angular contact heavy duty ball / race type bearing, designed to handle axial grinder pump thrust loads. Both bearings shall be permanently
lubricated by the oil, which fills the motor housing. The bearing system shall be designed to enable proper cutter alignment from shut off head to
maximum load at 10 ' of TDH. The motor shaft shall be made of 300 or 400 series stainless steel and have a minimum diameter of .670".
LSG202-RE_P4 9/28/2015 ©Copyright 2015 Liberty Pumps Inc. All rights reserved. Specifications subject to change without notice.
7.01 SEALS
The pump shall have a dual seal arrangement consisting of a lower and upper seal to protect the motor from the pumping liquid. The lower seal shall
be a FKM fluoroelastomer OR Buna N molded double lip seal, designed to exclude foreign material away from the main upper seal. The upper seal
shall be a unitized silicon carbide hard face seal with stainless steel housings and spring equal to Crane Type T-6a. The motor plate / housing
interface shall be sealed with a Buna-N o-ring.
8.01 IMPELLER
The impeller shall be a investment cast stainless steel impeller, with pump out vanes on the back shroud to keep debris away from the seal area. it
shall be keyed and bolted to the motor shaft.
9.01 CUTTER MECHANISM
The cutter and plate shall consist of 440 stainless steel with a Rockwell C hardness of 55-60. The stationary cutter plate shall have specially
designed orifices through it, which enable the slurry to flow through the pump housing at an equalized pressure and velocity. The stationary cutter
shall consist of V shapes to maximize cutting action and arc shape exclusion slots to outwardly eject debris from under the rotary cutter. The rotary
cutter shall have (4) blades and be designed with a recessed area behind the cutting edge to prevent the accumulation and binding of any material
between rotary cutter and the stationary cutter. The cutting system must incorporate close tolerances for optimum performance. Ring or radial
cutters, or those that grind on the outside circumference of shall not be considered equal.
10.01 CONTROLS
The unit is controlled by a CSA and UL approved automatic wide angle tilt float switch, it also has an alarm float that acts as a redundant on to the
pump. In the event the main switch fails and the alarm is activated the system will alarm as well as turning the pump on. The panel has a manual
switch to test operation of the pump; this feature is maintained in the Liberty drop in.
11.01 PAINT
The exterior of the casting shall be protected with Powder Coat paint.
12.01 SUPPORT
The pump shall have cast iron support legs, enabling it to be a free standing unit. The legs will be high enough to allow solids and long stringy debris
to enter the cutter assembly.
13.01 SERVICEABILTY
Components required for the repair of the pump shall be shipped within a period of 24 hours.
14.01 TESTING
The pump shall have a ground continuity check and the motor chamber shall be Hi-potted to test for electrical integrity, moisture content and
insulation defects. The motor and volute housing shall be pressurized, and an air leak decay test is performed to ensure integrity of the motor
housing. The pump shall be run, voltage current monitored, and the tester checks for noise or other malfunction.
15.01 QUALITY CONTROL
The pump shall be manufactured in an ISO 9001 certified Facility.
16.01 WARRANTY
Standard limited warranty shall be 3 years.
LSG202-RE_P5 9/28/2015 ©Copyright 2015 Liberty Pumps Inc. All rights reserved. Specifications subject to change without notice.
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