1221 2 Liberty D3672Lsgx202 48 Instructions Installation Manual User

User Manual: Pump 1221 2 Liberty D3672Lsgx202-48 Instructions

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Installation Manual

7353000E

D3600- Series Duplex Grinder Systems

Features:
 36” Diameter Fiberglass Tank
 Available in 48”, 60”, 72”, 84”, and 96” heights
 LSG Single or LSGX 2 Stage 2HP Grinder Pumps
 Factory Installed Guide Rail System
 Quick Tree™ pre-mounted float system
 NEMA 4X Junction Box
 NEMA 4X Duplex Alternating Control Panel

Contents
1. General Information
2. Precautions / Pre-Installation
3. Installation Instructions
4. Maintenance & Troubleshooting
5. GR20 Assembly

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

________________________

SERIAL ______________________
CODE
7000 Apple Tree Avenue
Bergen, NY 14416
Phone: (800) 543-2550
Fax: (585) 494-1839
www.libertypumps.com

______________________

INSTALLATION
DATE
_______________________

General Information

GRINDER PUMP SPECIFICATIONS
MODEL

H
P

VOLTAGE

PHASE

FULL
LOAD
AMPS

LOCKED
ROTOR
AMPS

THERMAL
OVERLOAD
TEMP

STATOR
WINDING
CLASS

SHUT-OFF
HEAD

CORD
LENGTH
FT

DISCHARGE

LSG202A

208/230

135˚C 275°F

108’

1-1/4”

LSG202M

208/230

135˚C 275°F

108’

1-1/4”

LSG202M-C*

208/230

135˚C 275°F

108’

1-1/4”

LSG203M

208/230

10.6

N/A

108’

1-1/4”

LSG204M

440/460

5.3

N/A

108’

1-1/4”

LSG205M
LSGX202A
LSGX202M

2
2
2

575
208-230
208-230

3
1
1

4.9
15
15

31
53
53

N/A
135˚C 275°F
135˚C 275°F

B
B
B

108’
185’
185’

25
25
25

1-1/4”
1-1/4”
1-1/4”

LSGX202M-C*

208-230

135˚C 275°F

185’

1-1/4”

LSGX203M

208/230

10.6

N/A

185’

1-1/4”

LSGX204M

440/460

5.3

N/A

185’

1-1/4”

LSGX205M

575

4.9

N/A

185’

1-1/4”

*Note: LSG202M-C & LSGX202M-C are for external capacitor applications and require the use of control panels fitted with properly
matched capacitors and start relays.
Maximum fluid temperature: 140F (60C)
The grinder 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 grinder 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 (800) 543-2550.

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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.

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.

2. Read all instructions and familiarize yourself with
the unit’s operation prior to proceeding with the
installation.

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.

3. A qualified licensed electrician should install and
test all electrical circuits.

6. All electrical connections should be tested to ensure
that a proper ground has been established

Installation Instructions
1. Excavation: Excavate the hole for the basin as small as possible, with a minimum base diameter of 50”. 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 2” schedule 80 PVC pipe to the pump discharge. Do not reduce the
size of the discharge piping, and do not increase the discharge piping to larger than 3”. The remainder of the
discharge line should be as short as possible with a minimum number of turns. Connect the inlet line to the 4”
inlet hub with a rubber donut (Liberty #6112000). 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.
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.

D3600
Series
System

Figure A – Inlet Venting

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 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 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 at 12” for D3648 (approximately
53 gallons) and 18” for D3672 (approximately 79 gallons). The pump cycle can be adjusted by loosening the cord
clamp and moving the “on” float up or down. We do not recommend adjustments of more than 3” in either
direction – 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 grinder pump and control panel

manual.

Maintenance and Troubleshooting

The grinder pump and 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 grinder pump manual and the control panel manual is
critical. Please follow the Maintenance and Troubleshooting procedures provided in those manuals.

Model
D3648
D3660
D3672
D3684
D3696

Off
Level
13”
(33 cm)
13”
(33 cm)
13”
(33 cm)
13”
(33 cm)
13”
(33 cm)

On
Level
25”
(64 cm)
28”
(71 cm)
31”
(79 cm)
34”
(86 cm)
37”
(94 cm)

Alarm
level
31”
(79 cm)
34”
(86 cm)
37”
(94 cm)
40”
(102 cm)
43”
(109 cm)

Volume/
cycle
62 gal.
(235 liters)
75 gal.
(284 liters)
88 gal.
(333 liters)
101 gal.
(382 liters)
115 gal.
(435 liters)

GR20 Quick Disconnect Assembly

GR20 Assembly
The GR20 quick disconnect assembly provided with your grinder package system is designed to allow easy installation
and removal of the pump. When installed correctly it will seal and provide a means to lift the pump without disconnecting
any of the discharge piping. Please ensure that installation is done as per the diagrams below.
ENSURE THAT
GROMMET IS
PROPERLY
INSTALLED

INSTALL 3/8X16 HEX BOLTS
HERE. EVENLY TIGHTEN
BOTH SIDES SO THAT
GASKET IS PROPERLY
COMPRESSED.

ENSURE THAT RUBBER
GROMMET IS PROPERLY
INSTALLED HERE.

1-1/4"
GUIDE RAIL PIPE
1-1/4"
DISCHARGE
PIPE

DISCONNECTED POSITION

PIPE GUIDE ASSEMBLY

OPERATING POSITION

3 Year Limited Warranty
Liberty Pumps, Inc. warrants that pumps of its manufacture are free from all factory defects in material and workmanship
for a period of 3 years from the date of purchase. The date of purchase shall be determined by a dated sales receipt
noting the model and serial number of the pump. The dated sales receipt must accompany the returned pump if the date
of return is more than 3 years from the "CODE" (date of manufacture) number noted on the pump nameplate.
The manufacturer's obligation under this Warranty shall be limited to the repair or replacement of any parts found by the
manufacturer to be defective, provided the part or assembly is returned freight prepaid to the manufacturer or its
authorized service center, and provided that none of the following warranty-voiding characteristics are evident:
The manufacturer shall not be liable under this Warranty if the product has not been properly installed; if it has been
disassembled, modified, abused or tampered with; if the electrical cord has been cut, damaged or spliced; if the pump
discharge has been reduced in size; if the pump has been used in water containing sand, lime, cement, gravel or other
abrasives; if the pump has been used in water above the advertised temperature rating; if the product has been used to
pump chemicals or hydrocarbons; if a non-submersible motor has been subjected to excessive moisture; or if the label
bearing the serial, model and code number has been removed.
Liberty Pumps, Inc. shall not be liable for any loss, damage or expenses resulting from installation or use of its products,
or for consequential damages, including costs of removal, reinstallation or transportation.
There is no other express warranty. All implied warranties, including those of merchantability and fitness for a
particular purpose, are limited to three years from the date of purchase.
This Warranty contains the exclusive remedy of the purchaser, and, where permitted, liability for consequential
or incidental damages under any and all warranties are excluded.

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1221 2 Liberty D3672Lsgx202 48 Instructions Installation Manual User

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