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• 2448LSG/LSGX - 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 single 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 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 110 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. The pump shall be controlled with: A piggy back style on/off float switch(Single Phase Only). 3.01 CONSTRUCTION: SA• Each centrifugal grinder pump shall be equal to the c us 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 25 feet of multiconductor power cord.It shall be cord type SJOOW(1-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. 2448LSG_P6 R4/2/2012 ®Copyright 2012 Liberty Pumps Inc. All rights reserved. Specifications subject to change without notice.