Product Overview

ALL MODELS: 3/4 HP, 1725 RPM
PUMP
The pump(s) shall be model __________________ as
manufactured by Liberty Pumps, Bergen, N.Y. or equal.
The pump(s) shall have a capacity of ______ GPM at
a total dynamic head of ________ feet. Motor size shall
be 3/4 horsepower, _______ phase, 60 hz. and _______
volt operation.
MOTOR
The pump motor shall be of the submersible type, oil filled,
and hermetically sealed. Single phase motors shall have
thermal overload protection embedded in the windings,
and shall automatically reset when motor cools. Three-
phase motors shall have heat breakers incorporated into
the control panel, properly sized for the horsepower and
amperage of the pump(s).
The rotor shaft shall be made of 416 stainless steel and
shall be supported by upper and lower ball bearings.
The power cord shall be of the quick-disconnect design.
IMPELLER
The pump impeller shall be cast iron, 2 vane,
semi-open, and shall be capable of passing a
2" spherical solid.
SEAL
The shaft seal shall be of the carbon/ceramic unitized
design, with BUNA N elastomers and stainless housings.
EXTERNAL CONSTRUCTION
The pump volute, legs and motor housing shall be heavy
gray iron castings, class 25 or better. All castings shall be
powder coated before assembly.
All fasteners shall be of 300-series stainless steel.
LEVEL CONTROL
The pump shall be controlled by an adjustable mechanical
switch sealed in a PVC float, and shall have a series plug
for manual bypass operation.
MODELS VOLTS PHASE AMPS DISCHARGE AUTOMATIC
SINGLE PHASE LE71M2 115 1 12 2" FLANGED NO
LE71A2 115 1 12 2" FLANGED YES
LE72M2 208-230 1 6 2" FLANGED NO
LE72A2 208-230 1 6 2" FLANGED YES
LE71M3 115 1 12 3" FLANGED NO
LE71A3 115 1 12 3" FLANGED YES
LE72M3 208-230 1 6 3" FLANGED NO
LE72A3 208-230 1 6 3" FLANGED YES
3-PHASE LE73M2 208-230 3 4.1 2" FLANGED NO
LE74M2 440-480 3 2.1 2" FLANGED NO
LE73M3 208-230 3 4.1 3" FLANGED NO
LE74M3 440-480 3 2.1 3" FLANGED NO
10' cord standard on single phase models. For 25' cord option, add a “-2” suffix to model number.
Example: LE71A2-2 for Model LE71A2 with 25' cord. 25' cord is standard on 3-phase models.
NOTE: 3-Phase models require panel for automatic operation. See sewage accessories literature for complete
information on all simplex and duplex controls.
DIMENSIONAL DATA:
Weight: LE71M: 60 LBS.
Height: 14.1"
Major Width: 12.5"
Maximum fluid temperature 140˚ F.
PERFORMANCE CURVE
1725 RPM
U.S. Gallons Per Minute
Total head in feet
28
24
20
16
12
8
4
0
20
40 60 80 100 120 140
0
Total Head in Meters
2
4
6
8
Liters Per Second
0
2.1
4.2
6.3
8.4
160
10.5
30
Copyright © Liberty Pumps, Inc. 2011
All rights reserved. LLIT 1700 R11/11
Specifications are subject to change without notice.
LE70-SERIES TECHNICAL SPECIFICATIONS
Liberty Pumps • 7000 Apple Tree Avenue • Bergen, New York 14416 • Phone [phone] Fax [phone]
www.libertypumps.com
Dual Safety certification for the United States and Canada.
®
LE70 Series v6:LE70 Series v4 10/6/11 11:02 AM Page 2