Submittal Sheet

LEH150_P5 R11/4/2011 ©Copyright 2011 Liberty Pumps Inc. All rights reserved. Specifications subject to change without notice.
5.01 MOTORS
Single phase motors shall be oil filled, split phase, capacitor start, class B insulated NEMA B design, rated for continuous duty. Three phase
motors shall be polyphase. At maximum load the winding temperature shall not exceed 135 degrees C unsubmerged. Since air filled motors
are not capable of dissipating heat they shall not be considered equal. Single phase motors shall have an integral thermal overload switch in
the windings for protecting the motor. Three phase motors shall be used with an appropriate controller with integral overload protection.
The capacitor circuit on single phase motors shall be mounted internally in the pump. Single phase motors shall have an integral solid state
starting circuit switch for switching the start winding off.
6.01 BEARINGS AND SHAFT
An upper radial and lower thrust bearing shall be required. The upper bearing shall be a single ball / race type bearing. The lower bearing
shall be an angular contact heavy duty ball / race type bearing, designed to handle axial pump thrust loads. 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 .670".
7.01 SEALS
The pump shall have a dual seal arrangement consisting of a lower and upper seal to protect the motor from the pumping liquid. The lower
seal shall be a FKM fluoroelastomer OR Buna N molded double lip seal, designed to exclude foreign material away from the main upper
seal. The upper seal shall be a unitized carbon ceramic hard face seal with stainless steel housings and spring. The motor plate / housing
interface shall be sealed with a Buna-N oring.
8.01 IMPELLER
The impeller shall be a class 25 cast iron semi-open 2 vane impeller, with pump out vanes on the back shroud to keep debris away from the
seal area. It shall be screw mounted to the motor shaft with a bonding agent and jam nut.
9.01 CONTROLS
All single phase units can be supplied with CSA and UL approved automatic wide angle tilt float switches. The switches shall be equipped
with piggy back style 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.
10.01 PAINT
The exterior of the casting shall be protected with Powder Coat Epoxy or Polyester paint.
11.01 SUPPORT
The pump shall have cast iron support legs, enabling it to be a free standing unit. The legs will be high enough to allow 2” solids handling.
12.01 SERVICEABILTY
Components required for the repair of the pump shall be shipped within a period of 24 hours.