Liberty Pumps LSG200 Series Installation Manual Download Page 4

4 | EN

Copyright © Liberty Pumps, Inc. 2021 All rights reserved.

5647000M

Submersible Pump—do not run dry

Keep pump upright.

At no time should the pump be stored within an incomplete 

wet pit. The pump should not be placed into the pit until it 

can be fully operational.

Do not allow the pump to freeze.

Before installation, read these instructions carefully. Each 

pump is individually factory tested to ensure proper 

performance. Closely following these instructions will 

eliminate potential operating problems, assuring years of 

trouble-free service.
The LSG/LSGX-Series pumps are to be used for handling 

septic tank effluent, sewage, and drain (storm) water.
Provide pump serial number in all correspondence.
Pumps are CSA certified to CSA and UL® standards.
Pumps must be serviced at a qualified repair facility 

approved by Liberty Pumps. No repair work should be 

carried out during the warranty period without prior factory 

approval. Any unauthorized field repairs void warranty. 

Contact Liberty Pumps at 1-800-543-2550 to locate the 

closest authorized service center.

It is extremely important to verify that the pump has been 

sized correctly for the intended installation. The operating 

point of the pump must lie within the acceptable range as 

outlined by the applicable Liberty Pumps performance chart. 

Operating the pump outside of the recommended range 

can invalidate the CSA Certification of the pump and can 

also cause damage and premature failure. Operating 

outside of the recommended range can cause the pump to 

exceed its rated nameplate amp draw, which will void the 

pump certification. It can also cause motor overheating, 

cavitation, excessive vibration, clogging, and poor energy 

efficiency.

Model Specifications

For complete listing of models and their specifications, refer to 

http://www.LibertyPumps.com/About/Engineering-Specs. Pump 

nameplate provides a record of specific pump information.

Inspection and Storage

 Initial Inspection

The pump should be immediately inspected for damage that may 

have occurred in shipment.

1.

Visually check the pump and any spare parts for damage.

2.

Check for damaged electrical wires, especially where they exit 

the motor housing.

Contact Liberty Pumps customer service to report any damage or 

shortage of parts.

 Storage Before Use

Protect the power and control cords from the environment. 

Unprotected power and control (switch) cords can allow water 

to wick through ends into pump or switch housings, causing 

surroundings to become energized.

At no time shall the pump be stored within an incomplete wet 

pit. The pump shall not be placed into the pit until it can be 

fully operational.

Do not allow the pump to freeze.

LSG/LSGX-Series Omnivore grinder pumps are shipped from the 

factory ready for installation and use. The pump should be held in 

storage if the pump station is not complete.
If storage is necessary, the pump should remain in its shipping 

container. It should be stored in a warehouse or storage shed that 

has a clean, dry temperature-stable environment where the pump 

and its container are covered to protect it from water, dirt, 

vibration, etc. The cord ends must be protected against moisture.

Uninstalled

 pumps that are idle for greater than three months 

should have cutters and impellers manually rotated once a month 

to lubricate the seals.

Installed

 pumps that are idle for greater than one month should 

have impellers and cutters manually operated through the breaker 

panel once a month to lubricate the seals. 

For automatic models

turn off the breaker, unplug the piggyback switch, and plug the 

pump directly into receptacle. Turn the breaker on for 30 seconds, 

then turn the breaker off. Plug the piggyback switch back in. Refer 

to 

Piggyback Switch Operation

.

Pumps that are idle in a wet basin must be removed.

Pump Design

LSG/LSGX-Series grinder pumps are designed for continuous 

underwater operation. The motor and pump form a close coupled, 

watertight unit. The induction motor is insulated against heat and 

moisture in accordance with Class B 265°F (130°C) regulations.
A thermal overload protector is embedded in the stator windings. 

This is connected in series and wired to shut down the pump if 

overheating occurs. The overload switch resets automatically 

when the motor cools.
The motor is protected against damage from water entry by two 

seals. The lower seal is a Viton lip seal and the upper seal is a 

graphite impregnated silicon carbide hard face seal.
The impeller and volute are designed for efficient flow 

characteristics and clog-free operation. The hardened cutters 

grind solids and fibrous matter into small particles that can be 

safely pumped through small diameter piping.

General Information

Operating Constraints

RISK OF ELECTRIC SHOCK

Summary of Contents for LSG200 Series

Page 1: ...ps at 1 800 543 2550 Retain dated sales receipt for warranty Serial Mfg Date Install Date Installation Manual 5647000M Copyright Liberty Pumps Inc 2021 All rights reserved For pressure sewer applicati...

Page 2: ...by its power cord This will damage the power cord and could expose the electrically live wires inside the power cord The electrical power supply shall be located within the length limitations of the p...

Page 3: ...iates poisonous gas buildup and reduces the risk of explosion and fire from these flammable gases Wear adequate Personal Protective Equipment when working on pumps or piping that have been exposed to...

Page 4: ...e Before Use Protect the power and control cords from the environment Unprotected power and control switch cords can allow water to wick through ends into pump or switch housings causing surroundings...

Page 5: ...stat integrally mounted to the motor and wired to shut down the pump if overheating occurs The thermostat resets automatically after the pump has cooled Power and Control Cords Do not remove cord and...

Page 6: ...ineering drawings will generally specify the levels for Pump ON Pump OFF and HIGH LEVEL ALARM If they are not specified the guidelines in Table 2 should be used to determine float switch locations The...

Page 7: ...pplied with a 6 20P 20A cord plug end If a 1 phase pump will be wired directly into a junction box it is necessary to remove the plug Qualified personnel shall complete the wiring in accordance with t...

Page 8: ...are used refer to the separate instructions supplied with the unit for proper installation and operation making sure all gaskets and components are present Liberty Pumps GR20 Guide Rail System featur...

Page 9: ...k valve operation 4 For multiple pumps check for balanced operating times Uneven times indicate a defective unit float switch or control 5 Inspect the control panel for any presence of moisture in enc...

Page 10: ...to Auto position Float switch unable to move to the pump OFF position due to interference with the side of basin or other obstruction Position the pump or float switch so that it has adequate clearan...

Page 11: ...obstruction Pump is airlocked Turn pump off and let set for several minutes then restart Add baffle to reduce trapped air bubbles Capacitor failure in control panel Check capacitors and replace if nee...

Page 12: ...r transportation There is no other express warranty All implied warranties including those of merchantability and fitness for a particular purpose are limited to three years from the date of purchase...

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