Operating Conditions - Liberty Pumps LSG200 Serie Mode D'emploi

LSG200/LSGX200-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 LSG200/LSGX200-Series single/three-phase 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
__________ GPM 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 110 feet and a maximum flow of 50 GPM @ 10 feet of total dynamic head. The LSGX-Series 2-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.
Single-phase pumps shall have capacitors and start relay mounted [____] in the pump, or [____] in the panel.
The pump shall be controlled with:
__ A piggyback style on/off float switch (single-phase only)
__ A NEMA 4X outdoor simplex control panel with three float switches and a high water alarm
__ A NEMA 1 indoor simplex control panel with three float switches and a high water alarm
__ A NEMA 4X outdoor duplex control panel with three float switches and a high water alarm
__ A NEMA 1 indoor duplex control panel with three float switches and a high water alarm
__ A NEMA 4X outdoor duplex control panel with four float switches and a high water alarm
__ A NEMA 1 indoor duplex control panel with four float switches and a high water alarm
3.01 CONSTRUCTION
Each centrifugal grinder pump shall be equal to the
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 fluoroelastomer. 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 a stainless steel handle having a nitrile grip.
LSG200_P6 R7/17/2019
7000 Apple Tree Avenue Bergen NY 14416
certified LSG/LSGX-Series grinder pumps as manufactured by Liberty Pumps,
Copyright © Liberty Pumps, Inc. 2019
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Phone 800-543-2550 Fax 585-494-1839
All rights reserved. Specifications subject to change without notice.
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Email Liberty@LibertyPumps.com
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Web www.LibertyPumps.com