1049 3 Liberty 253 2 Curves 1 User Manual
1048 3 Liberty 251-2 Curves 1048_3_Liberty 251-2 Curves
500 3 Liberty 251A Curves 500_3_Liberty 251A Curves
581 3 Liberty 250 Series Specifications 581_3_Liberty 250 Series Specifications
743 3 Liberty 253-3 Curves 743_3_Liberty 253-3 Curves
750 3 Liberty 251-5 Curves 750_3_Liberty 251-5 Curves
User Manual: Pump 1049 3 Liberty 253-2 Curves
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Pump Specifications 250 Series Submersible Sump / Effluent Pump 2” Solids handling 250_P1 R1/24/2012 ©Copyright 2012 Liberty Pumps Inc. All rights reserved. Specifications subject to change without notice. 250-Series Dimensional Data 250_P2 R1/24/2012 ©Copyright 2012 Liberty Pumps Inc. All rights reserved. Specifications subject to change without notice. 250-Series Electrical Data MODEL HP VOLTAGE PHASE FULL LOAD AMPS LOCKED ROTOR AMPS THERMAL OVERLOAD TEMP STATOR WINDING CLASS CORD LENGTH FT DISCHARGE AUTOMATIC 250 1/3 115 1 5.2 8 105˚C / 221°F B 10 1 1/2 NO MANUAL 251 1/3 115 1 5.2 8 105˚C / 221°F B 10 1 1/2 YES INTEGRAL FLOAT 253 1/3 115 1 5.2 8 105˚C / 221°F B 10 1 1/2 257 1/3 115 1 5.2 8 105˚C / 221°F B 10 1 1/2 YES PIGGY BACK FLOAT YES INTEGRAL VERTICLE FLOAT 250-Series Cord Length Options* Model 10' 25'(-2) 35'(-3) 50'(-5) 250 Standard Optional Optional Optional 251 Standard Optional Optional Optional 253 Standard Optional Optional N/A 257 Standard Optional N/A N/A 10' cord length standard on all models. For optional lengths, add “-2, -3 or -5” suffix to model number. Example: for model 250 with 35' cord. Order 250-3 WARNING: *Always use a replacement power cord assembly of the same length and type as originally installed on the Liberty product. Using a cord of improper gauge or length may lead to exceeding the electrical rating of the cord and could result in death, injury, fire or other significant failure. 250_P3 R1/24/2012 ©Copyright 2012 Liberty Pumps Inc. All rights reserved. Specifications subject to change without notice. 250-Series Technical Data VORTEX ENGINEERED POLYMER IMPELLER ½” SOLIDS HANDLING SIZE PAINT POWDER COAT MAX LIQUID TEMP 60˚C 140˚C CLASS B 130˚C/ 266˚F MAX STATOR TEMP 105˚C / 221˚F THERMAL OVERLOAD SJTW (10ft & 25ft models) SJTOOW (35ft & 50ft models) POWER CORD TYPE MOTOR HOUSING / VOLUTE CLASS 25 CAST IRON SHAFT STAINLESS HARDWARE STAINLESS ORINGS BUNA N ENGINEERED DOUBLE LIP SEAL WITH STAINLESS STEEL SPRINGS SEAL WEIGHT 23 LBS 250-Series Specifications 1.01 GENERAL: The contractor shall provide labor, material, equipment, and incidentals required to provide (QTY) centrifugal pumps as specified herein. The pump models covered in this specification are Series 250 single phase 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 1/3 hp, 115 volts, single 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 effluent with 1/2” solid handling capability. The submersible pump shall have a shut-off head of 23 feet and a maximum flow of 44 GPM @ 5 feet of total dynamic head. The pump shall be controlled with: ______A piggy back style on/off float switch. ______An integrally wired on/off float switch. ______A Vertical Mechanical Float (VMF) type on/off switch. ______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 simplex control panel with four float switches and a high water alarm. ______A NEMA 1 indoor simplex control panel with four float switches and a high water alarm. ______A NEMA 4X outdoor duplex control panel with three float switches and a high water alarm. 250_P4 R1/24/2012 ©Copyright 2012 Liberty Pumps Inc. All rights reserved. Specifications subject to change without notice. ______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 effluent pump shall be equal to the certified Series 250 SERIES 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 an engineered double lip seal with stainless steel springs. The pump shall be furnished with stainless steel handle. 4.01 ELECTRICAL POWER CORD The submersible pump shall be supplied with 10, 25, 35, or 50 feet of multiconductor power cord. It shall be cord type SJTW, or SJTOOW 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. 5.01 MOTORS Single phase motors shall be oil filled, permanent split capacitor, class B insulated NEMA B design, rated for continuous duty. At maximum load the winding temperature shall not exceed 130 degrees C unsubmerged. Since air filled motors are not capable of dissipating heat they shall not be considered equal. The pump motor shall have an integral thermal overload switch in the windings for protecting the motor. The capacitor circuit shall be mounted internally in the pump. 6.01 BEARINGS AND SHAFT Upper and lower ball bearings shall be required. The bearings shall be a single ball / race type bearing. Both bearings shall be permanently lubricated by the oil, which fills the motor housing. The motor shaft shall be made of 300 or 400 series stainless steel and have a minimum diameter of .311". 7.01 SEALS The pump shall have an engineered double lip seal with stainless steel springs. The motor plate / housing interface shall be sealed with a Buna-N o-ring. 8.01 IMPELLER The impeller shall be engineered polymer, with pump out vanes on the back shroud to keep debris away from the seal area. It shall be threaded to the motor shaft. 9.01 CONTROLS All pumps can be supplied with a CSA and UL approved VMF type switch, an integrally wired wide angle tilt float switch, or piggy back type wide angle tilt float switches. The piggy back style switches are equipped with a plug that allows the pump to be operated manually without the removal of the pump in the event that a switch becomes inoperable. Manual pumps are operable by means of a pump control panel. 250_P5 R1/24/2012 ©Copyright 2012 Liberty Pumps Inc. All rights reserved. Specifications subject to change without notice. 10.01 PAINT The exterior of the casting shall be protected with Powder Coat paint. 11.01 SUPPORT The pump shall have cast iron support legs, enabling it to be a free standing unit. 12.01 SERVICEABILTY Components required for the repair of the pump shall be shipped within a period of 24 hours. 13.01 FACTORY ASSEMBLED TANK SYSTEMS WITH GUIDE RAIL AND QUICK DISCONNECT DISCHARGE ______ Guide factory mounted rail system with pump suspended by means of bolt on quick disconnect which is sealed by means of nitrile grommets or o-rings. Discharge piping shall be schedule 80 PVC and furnished with a PVC shut-off ball valve. The Tank shall be wound fiberglass or roto-molded plastic. An inlet hub shall be provided with the fiberglass systems. ______ Stainless steel Guide Rail ______ Zinc plated steel Guide Rail ______ "diameter of basin size ______ "height of basin size ______ "distance from top of tank to discharge pipe outlet ______ Fiberglass cover ______ Structural foam polymer cover ______ Steel cover ______ Simplex System with Outdoor panel and alarm ______ Duplex System with Outdoor panel and alarm ______ Separate Outdoor Alarm ______ Remote Outdoor Alarm 14.01 TESTING The pump shall have a ground continuity check and the motor chamber shall be Hi-potted to test for electrical integrity, moisture content and insulation defects. The motor and volute housing shall be pressurized, and an air leak decay test is performed to ensure integrity of the motor housing. The pump shall be run, voltage current monitored, and the tester checks for noise or other malfunction. 15.01 QUALITY CONTROL The pump shall be manufactured in an ISO 9001 certified Facility. 16.01 WARRANTY Standard limited warranty shall be 3 years. 250_P6 R1/24/2012 ©Copyright 2012 Liberty Pumps Inc. All rights reserved. Specifications subject to change without notice.
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