4 | EN
Copyright © Liberty Pumps, Inc. 2021 All rights reserved.
5672000J
Model Specifications
For complete listing of models and their specifications, refer to
http://www.LibertyPumps.com/About/Engineering-Specs. Pump
nameplate provides a record of specific pump information.
Inspection and Storage
Initial Inspection
The pump should be immediately inspected for damage that may
have occurred in shipment.
1.
Visually check the pump and any spare parts for damage.
2.
Check for damaged electrical wires, especially where they exit
the motor housing.
Contact Liberty Pumps customer service to report any damage or
shortage of parts.
Storage Before Use
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.
At no time shall the pump be stored within an incomplete wet
pit. The pump shall not be placed into the pit until it can be
fully operational.
Do not allow the pump to freeze.
LSG/LSGX-Series Omnivore grinder pumps are shipped from the
factory ready for installation and use. The pump 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 environment where the pump
and its container are covered to protect it from water, dirt,
vibration, etc. The cord ends must be protected against moisture.
Uninstalled
pumps that are idle for greater than three months
should have cutters and impellers manually rotated once a month
to lubricate the seals.
Installed
pumps that are idle for greater than one month should
have impellers and cutters manually operated through the breaker
panel once a month to lubricate the seals.
Pumps that are idle in a wet basin must be removed.
Pump Design
LSG/LSGX-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 in accordance with Class B 265°F (130°C) regulations.
A thermal overload protector is embedded 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.
The motor is protected against damage from water entry by two
seals. The lower seal is a Viton lip seal and the upper seal is a
graphite impregnated silicon carbide hard face seal.
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.
Pressure Sewer Applications
A redundant check valve assembly consisting of a curb stop and
check valve must be installed between the pump discharge and
the street main, as close to the public right-of-way as possible, on
all pressure (force main) sewer installations to protect from system
pressures. The curb stop valve is necessary to isolate the site from
the pressure sewer while the check valve provides redundant
protection against potentially detrimental backflow. All valves and
fittings should be rated for at least 200 PSI service. See Liberty
Pumps line of CSV-Series Curb Stop/Swing Check Valve
Assemblies and CK-Series Connection Kit.
Bulkhead
Connection
Pump Station
Compression
Adapter
Fitting
Curb Box
Compression
Adapter
Fitting
Valve Extension
Rod Shown
Curb Stop Valve/Swing
Check Valve Assembly
To Pump
To Main
Flow
Grade
RISK OF ELECTRIC SHOCK
