1

LE70-Series Electrical Data

MODEL HP

VOLTAGE

PHASE

FULL

LOAD
AMPS

LOCKED

ROTOR

AMPS

THERMAL

OVERLOAD

TEMP

STATOR

WINDING

CLASS

CORD

LENGTH

DISCHARGE AUTOMATIC

LE71A2 3/4 115

1 12 28

105°C 221°C

B 10 2"

YES

LE71A2-2 3/4

115

1 12 28

105°C 221°C

B 25 2"

YES

LE71M2 3/4

115

1 12 28

105°C 221°C

B 10 2"

LE71M2-2 3/4

115

1 12 28

105°C 221°C

B 25 2"

LE71A3 3/4

115

1 12 28

105°C 221°C

B 10 3"

YES

LE71A3-2 3/4

115

1 12 28

105°C 221°C

B 25 3"

YES

LE71M3 3/4

115

1 12 28

105°C 221°C

B 10 3"

LE71M3-2 3/4

115

1 12 28

105°C 221°C

B 25 3"

LE72A2 3/4

208-230

1 6 13

105°C 221°C

B 10 2"

YES

LE72A2-2 3/4 208-230

1 6 13

105°C 221°C

B 25 2"

YES

LE72M2 3/4

208-230 1

13 105°C 221°C

B 10 2"

LE72M2-2 3/4 208-230

13 105°C 221°C

B 25 2"

LE72A3 3/4

208-230 1

13 105°C 221°C

B 10 3"

YES

LE72A3-2 3/4 208-230

13 105°C 221°C

B 25 3"

YES

LE72M3 3/4

208-230 1

13 105°C 221°C

B 10 3"

LE72M3-2 3/4 208-230

13 105°C 221°C

B 25 3"

LE73M2-2 3/4 208-230

4.1

13.5

N/A

LE73M3-2 3/4 208-230

4.1

13.5

N/A

B 25 3"

LE74M2-2 3/4 440-480

2.1

N/A

B 25 2"

LE74M3-2 3/4 440-480

2.1

N/A

B 25 3"

LE70-Series Technical Data

IMPELLER

2 VANE CLASS 25 CAST

IRON

SOLIDS HANDLING SIZE

PAINT

POWDER COAT

MAX LIQUID TEMP

60°C 140°F

MAX STATOR TEMP

130°C 266°F

THERMAL OVERLOAD

105°C 221°C (single-phase

only)

POWER CORD TYPE

SJTW (1-PH) or SEOOW (3-

PH)

MOTOR HOUSING

CLASS 25 CAST IRON

VOLUTE

CLASS 25 CAST IRON

SHAFT

STAINLESS

HARDWARE

STAINLESS

ORINGS

BUNA N

MECHANICAL SEAL

UNITIZED CERAMIC CARBON

MIN BEARING LIFE

50,000 HRS

WEIGHT

62 LBS

LE70-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 LE70 single phase or three 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 3/4 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 sewage with 2" solid handling capability. The submersible pump shall have a

shut-off head of 28 feet and a maximum flow of 145 GPM @ 5 feet of total dynamic head.

The pump shall be controlled with:

______A piggy back style on/off float 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 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 sewage pump shall be equal to the

certified Series LE70 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 a unitized ceramic/carbon seal with stainless steel housings and spring. The upper and lower bearing shall be capable of handling all

radial and thrust loads. The pump shall be furnished with stainless steel handle.

4.01 ELECTRICAL POWER CORD

The submersible pump shall be supplied with 10 or 25 feet of multiconductor power cord. It shall be cord type SJTW (1-PH) or SEOOW (3-

PH), 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. Three phase

motors shall be oil filled, 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. Single

phase pump 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 shall be mounted internally in the pump on single phase

units.

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 .625".

7.01 SEALS

The pump shall have a unitized carbon / ceramic seal with stainless steel housings and spring equal to Crane Type 6A. The motor plate /

housing interface shall be sealed with a Buna-N o-ring.

8.01 IMPELLER

The impeller shall be a class 25 iron, 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 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 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 to enter the

volute.

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. The disconnect system shall have an internal ball check. The 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. A cast iron 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

______ Simplex System with Indoor panel and alarm

______ Duplex System with Indoor 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 2 years.

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