Liberty Pumps D3648, D3660, D3672, D3684, D3696 Installation Manual
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Installation Manual
D3672-Series Shown
Duplex Grinder Systems
D3648/D3660/D3672/D3684/
D3696/D36120-Series
• 36” Diameter Fiberglass Basin
• Available in 48”, 60”, 72”, 84”, 96” and 120” Heights
Features
• LSG Grinder Pump (2 hp, 208/230V)
-or-
•LSGX Grinder Pump (2 hp, 208–230V)
7353000H
• Pre-mounted Float System
– QuickTree® Float System on heights to 84”
• GR20 Guide Rail System
• NEMA 4X Duplex Control Panel
• NEMA 4X Junction Box
IMPORTANT: All Liberty Pumps products are supplied with their own
separate Installation/Operation/Maintenance manuals. Ensure receipt of
these manuals, and that they are read and understood prior to installation.
For questions, call Liberty Pumps customer service at 800-543-2550.
7000 Apple Tree Avenue
Bergen, NY 14416
ph: 800-543-2550
fax: 585-494-1839
www.LibertyPumps.com
Keep this manual handy for future reference.
For replacement manual, visit LibertyPumps.com,
or contact Liberty Pumps at 800-543-2550.
Retain dated sales receipt for warranty.
Installer: Manual must remain with owner or
system operator/maintainer.
Prior to installation, record information
from pump nameplate for future reference:
System:
Model(s):
Serial(s):
Control Pane l:
Mfg Date:
Install Date:
Copyright © Liberty Pumps, Inc. 2020 All rights reserved.
Contents
Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 | EN
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 | EN
Model Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . 4 | EN
Basin Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 | EN
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 | EN
Operation, Maintenance, Troubleshooting. . . . . . . . . 7 | EN
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 | EN
Safety Guidelines
This safety alert symbol is used in the manual
and on the pump to alert of potential risk for
serious injury or death.
This safety alert symbol identifies risk of
electric shock. It is accompanied with an
instruction intended to minimize potential
risk of electric shock.
This safety alert symbol identifies risk of fire.
It is accompanied with an instruction
intended to minimize potential risk of fire.
This safety alert symbol identifies risk of
serious injury or death. It is accompanied
with an instruction intended to minimize
potential risk of injury or death.
Warns of hazards which, if not avoided, will
result in serious inj ury or death.
Warns of hazards which, if not avoided, could
result in serious inj ury or death.
Warns of hazards which, if not avoided, could
result in minor or moderate injury.
Signals an important instruction related to
the pump. Failure to follow these instructions
could result in pump failure or property
damage.
Read every supplied manual before using
pump system. Follow all the safety instructions
in manual(s) and on the pump. Failure to do
so could result in serious injury or death.
Safety Precautions
Accidental contact with electrically live parts, items, fluid, or
water can cause serious injury or death.
Always disconnect pump(s) from power source(s) before
handling or making any adjustments to either the pump(s),
the pump system, or the control panel.
All installation and maintenance of pumps, controls,
protection devices, and general wiring shall be done by
qualified personnel.
RISK OF ELECTRIC SHOCK
All electrical and safety practices shall be in accordance with
the National Electrical Code
®
, the Occupational Safety and
Health Administration, or applicable local codes and
ordinances.
Do not remove cord and strain relief, and do not connect
conduit to pump.
Pump shall be properly grounded using its supplied
grounding conductor. Do not bypass grounding wires or
remove ground prong from attachment plugs. Failure to
properly ground the pump system can cause all metal
portions of the pump and its surroundings to become
energized.
Do not handle or unplug the pump with wet hands, when
standing on damp surface, or in water unless wearing
Personal Protective Equipment.
Always wear dielectric rubber boots and other applicable
Personal Protective Equipment (PPE) when water is on the
floor and an energized pump system must be serviced, as
submerged electrical connections can energize the water. Do
not enter the water if the water level is higher than the PPE
protection or if the PPE is not watertight.
Do not lift or carry a pump or a float assembly by its power
cord. This will damage the power cord, and could expose the
electrically live wires inside the power cord.
The electrical power supply shall be located within the length
limitations of the pump power cord, and for below grade
installations it shall be at least 4 ft (1.22 m) above floor level.
Do not use this product in applications where human contact
with the pumped fluid is common (such as swimming pools,
fountains, marine areas, etc.).
Protect the power and control cords from the environment.
Unprotected power and control (switch) cords can allow
water to wick through ends into pump or switch housings,
causing surroundings to become energized.
Single-phase 208/230V pumps shall only be operated
without the float switch by using the circuit breaker or panel
disconnect.
Some products may have internal capacitors that could cause
shock. Avoid contact with plug ends after removing from
energy source.
RISK OF FIRE
Do not use an extension cord to power the product.
Extension cords can overload both the product and extension
cord supply wires. Overloaded wires will get very hot and can
catch on fire.
This product requires a separate, properly fused and
grounded branch circuit, sized for the voltage and amperage
requirements of the pump, as noted on the nameplate.
Overloaded branch circuit wi res will get very hot and can
catch on fire. When used, electrical outlets shall be simplex of
the appropriate rating.
Do not use this product with or near flammable or explosive
fluids such as gasoline, fuel oil, kerosene, etc. If rotating
elements inside pump strike any foreign object, sparks may
occur. Sparks could ignite flammable liquids.
2 | EN Copyright © Liberty Pumps, Inc. 2020 All rights reserved. 7353000H
Sewage and effluent systems produce and may contain
flammable and explosive gases. Prevent introduction of
foreign objects into basin as sparks could ignite these gases.
Exercise caution using tools and do not use electronic devices
or have live, exposed electrical circuits in or around basins,
open covers and vents.
These pumps are not to be installed in locations classified as
hazardous in accordance with the National Electric Code
ANSI/NFPA 70.
®
RISK OF SERIOUS INJURY OR DEATH
Energizing the control panel or breaker for the first time is
potentially dangerous. Licensed electrical personnel should
be present when the panel or breaker is energized for the first
time. If faults caused by damage or poor installation practices
have not been detected, serious damage, injury or death can
result when power is applied.
Do not modify the pump/pump system in any way.
Modifications may affect seals, change the electrical loading
of the pump, or damage the pump and its components.
All pump/pump system installations shall be in compliance
with all applicable Federal, State, and Local codes and
ordinances.
Do not allow children to play with the pump system.
Do not allow any person who is unqualified to have contact
with this pump system. Any person who is unaware of the
dangers of this pump system, or has not read this manual,
can easily be injured by the pump system.
In 208/230V installations, one side of the line going to the
pump is always “hot”, wheth er th e float switch is on or off. To
avoid hazards, install a double pole disconnect near the
pump installation.
Vent basin in accordance with local code. Proper venting of
sewer and effluent gases alleviates poisonous gas buildup
and reduces the risk of explosion and fire from these
flammable gases.
Wear adequate Personal Protective Equipment when working
on pumps or piping that have been exposed to wastewater.
Sump and sewage pumps often handle materials that can
transmit illness or disease upon contact with skin and other
tissues.
Do not enter a pump basin after it has been used. Sewage
and effluent can emit several gases that are poisonous.
Do not remove any tags or labels from the pump or its cord.
Keep clear of suction and discharge openings. To prevent
injury, never insert fingers into pump while it is connected to
a power source.
Do not use this product with flammable, explosive, or
corrosive fluids. Do not use in a flammable and/or explosive
atmosphere as serious injury or death could result.
This product contains chemicals known to the State of
California to cause cancer and birth defects or other
reproductive harm. www.p65warnings.ca.gov.
A 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.
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.
,
Do not dispose of materials such as paint thinner or other
chemicals down drains. Doing so could chemically attack and
damage pump system components and cause product
malfunction or failure.
Do not use these pumps with fluid over 140°F (60°C).
Operating the pump in fluid above this temperature can
overheat the pump, resulting in pump failure.
Do not use pump system with mud, sand, cement,
hydrocarbons, grease, or chemicals. Pump and system
components can be damaged from these items causing
product malfunction or failure. Additionally, flooding can
occur if these items jam the impeller or piping.
Do not run dry.
®
The Uniform Plumbing Code
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.
Do not exert heavy pressure or run heavy equipment on the
backfill material as this could cause the tank to collapse.
Introduction
Pumps, alarm, and control panel are supplied with their own
separate manuals. Ensure receipt of these manuals, and that they
are read and understood prior to installing and using this system.
Familiarity with the pumps, alarm, and control panel is critical.
This manual provides a brief overview of the system, and deals
mainly with inspection and installation of the basin. It does not
cover the specifics of the pump, alarm, and control panel
operation. For questions, call Liberty Pumps customer service at
800-543-2550.
Identification
Information about the system can be found on a tag located on
the basin cover. This identifies the system model number as well
as the horsepower, voltage, and amp draw for the pump. Pump
tag is located on the pump. Duplicate pump tags are packaged
with the system. These should be mounted on the basin cover or
at the control panel for accessibility and immediate pump
information.
Inspection
Inspect the system 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.
Read all instructions and become familiar with the system’s
operation prior to proceeding with the installation.
7353000H Copyright © Liberty Pumps, Inc. 2020 All rights reserved. 3 | EN
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