Liberty Pumps LGV Series Installation Manual

3–15 hp submersible grinder pumps

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Installation manual (14 pages)

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Installation Manual

For pressure sewer applications, verify a Redundant

Check Valve Assembly (curb stop and check valve) is

installed between the pump discharge and the street

main, as close to the public right-of-way as possible, on all

installations to protect from system pressures.

Installer: manual must remain with owner or

system operator/maintainer.

Record information from pump nameplate:

Model:

Serial:

Control Panel:

Mfg Date:

Install Date:

Dealer:

Dealer Ph:

7550000H

LGV-Series

LGH-Series

Ordinary Location Models

XLGV-Series

XLGH-Series

Approved for Hazardous Locations

Class 1, Division 1, Groups C and D T4

Class 1, Zone 1, Groups IIA and IIB T4

3–15 hp

Submersible

Grinder Pumps

7000 Apple Tree Avenue

Bergen, NY 14416

ph: 1-800-543-2550

fax: 1-585-494-1839

www.LibertyPumps.com/LEP

60 Hz

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Summary of Contents for Liberty Pumps LGV Series

Page 1 Installer: manual must remain with owner or system operator/maintainer. Record information from pump nameplate: Model: Serial: Control Panel: Mfg Date: Install Date: Dealer: 7000 Apple Tree Avenue Bergen, NY 14416 Dealer Ph: ph: 1-800-543-2550 fax: 1-585-494-1839 www.LibertyPumps.com/LEP Copyright © Liberty Pumps, Inc. 2022 All rights reserved.
Page 2  Do not use an extension cord to power the product. Extension cords can overload both the product and extension cord supply wires. Overloaded wires will get very hot and can catch on fire. 2 | EN Copyright © Liberty Pumps, Inc. 2022 All rights reserved. 7550000H...
Page 3  For cord replacement: power cord must be of the same length  Wear adequate Personal Protective Equipment when working and type as originally installed on the Liberty Pumps product. on pumps or piping that have been exposed to wastewater.
Page 4 Visually check the pump and any spare parts for damage. 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. 4 | EN Copyright © Liberty Pumps, Inc. 2022 All rights reserved.
Page 5 1-phase models contain the required start indicates an issue that should be investigated. Liberty Pumps circuitry. If using a non-Liberty Pumps control panel, a start circuit control panels contain the proper circuitry to protect the motor in will need to be installed.
Page 6 The LEP-Series control panels by Liberty Pumps have a seal leak detection system with a test button that monitors the integrity of...
Page 7 Class Number 9088-01. These repair facilities are certified to service and repair electric motors used in Hazardous Locations. Consult the factory (Liberty Pumps) if assistance is needed in finding a certified repair facility. Third Party Hazardous Locations approvals will be voided if a pump is rewired, repaired, or serviced by a repair shop that is not properly certified.
Page 8 Some vaults have angled bottoms that might interfere with the pump legs. In this Start application, the pump’s legs should be trimmed as required. Liberty Pumps recommends leaving a portion of the leg so that LEAD NO. COLOR 15HP MODELS ONLY the pump will stand upright when placed on the floor.
Page 10 Contact flange or grommet can be installed in a hole cut into the cover Liberty Pumps or other qualified person if questions arise (option 3). regarding proper pipe size and flow rates.
Page 11  All electrical and motor repairs and service must be operate together until level drops to turn-off point. performed by a repair facility approved by Liberty Pumps and 11. Repeat this operation and cycle several times before leaving certified to work on explosion-proof motor enclosures.
Page 12 Pumps must be serviced at a qualified repair facility approved by lubrication, use ISO VG 10 turbine oil. Contact the factory for Liberty Pumps. No repair work shall be carried out during the proper replacement procedure. For Hazardous Location pumps, warranty period without prior factory approval.
Page 13 Missing or faulty curb stop/swing check valve Verify presence of a curb stop check valve or allowing system pressure to feed back through replace curb stop/swing check valve assembly. discharge piping. 7550000H Copyright © Liberty Pumps, Inc. 2022 All rights reserved. 13 | EN...
Page 14 Foreign objects in the impeller cavity. Clean the impeller cavity. Consult Liberty Pumps for information Broken impeller. regarding impeller replacement. Worn bearings. Return pump to an authorized repair facility. 14 | EN Copyright © Liberty Pumps, Inc. 2022 All rights reserved. 7550000H...
Page 15 Check capacitors and replace if needed. Stuck/defective motor contactor in control Replace motor contactor. panel. Pump is not seated correctly in guide rail base. Lift pump and re-position. 7550000H Copyright © Liberty Pumps, Inc. 2022 All rights reserved. 15 | EN...
Page 16 Liberty Engineered Products Limited Warranty Liberty Pumps, Inc. warrants that pumps of its Engineered Product line are free from all factory defects in material and workmanship for a period of 18 months from the date of installation or 24 months from the date of manufacture, whichever occurs first, and provided that such products are used in compliance with their intended applications as set forth in the Liberty Engineered Products specifications and technical manuals.

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Lgh series Xlgv series xlgh series