8 | EN
Copyright © Liberty Pumps, Inc. 2020 All rights reserved.
6850000C
Guide Rail System
When working in a hazardous location, all precautions to
minimize ignition sources such as spark and flame should be
taken to limit the potential for fire or explosion.
If guide rails are used, refer to the separate instructions supplied
with the unit for proper installation and operation, making sure all
gaskets and components are present. Use of a guide rail system
shall be of a non-sparking design. Contact Liberty Pumps for
available models, such as GR20NS.
If guide rails are not used, complete all pump-mounted plumbing
at this time, being sure all gaskets and components are present.
Pump
Record information from pump nameplate onto inside cover of
these instructions. Complete a visual inspection before lowering
into basin.
Place pump in basin being sure the mounting interface (i.e., guide
rail, torque stop) is engaged correctly.
Discharge
Make all discharge connections. A check valve is required to
prevent the backflow of liquid after each pumping cycle. A gate
valve should follow the check valve to allow periodic cleaning of
the check valve or removal of the pump. The remainder of the
discharge line should be as short as possible with a minimum
number of turns to minimize friction head loss. Do not reduce the
discharge to below the pump outlet size. Larger pipe sizes may be
required to eliminate friction head loss over long runs. Contact
Liberty Pumps or other qualified person if questions arise
regarding proper pipe size and flow rates.
Vent
Vent basin in accordance with applicable plumbing codes.
Operation
Energizing the control panel or breaker for the first time is
potentially dangerous. Licensed electrical personnel should
be present when the panel or breaker is energized for the first
time. If faults caused by damage or poor installation practices
have not been detected, serious damage, injury or death can
result when power is applied.
Starting System
1.
Verify all plumbing components in the basin are installed
correctly and functional. Verify all valves are open and ready
for pump use.
2.
Double check all wire connections. Re-tighten all factory and
field connections.
3.
Ensure pump has no obstructions.
4.
With all electrical and mechanical connections complete and
secure, turn on power to control panel and pump.
5.
Verify operation of the pump, floats, and alarm circuits.
6.
Run several cycles of water through the system to verify
correct control operation for the installation.
Be certain to complete adequate testing, especially on systems
with multiple pumps or custom control configurations.
Maintenance and Troubleshooting
Accidental contact with electrically live parts, items, fluid, or
water can cause serious injury or death.
Always disconnect pump(s) from power source(s) before
handling or making any adjustments to either the pump(s),
the pump system, or the control panel.
All electrical and motor repairs and service must be
performed by a repair facility approved by Liberty Pumps and
certified to work on explosion-proof motor enclosures.
Use only non-sparking tools and components in and around
basins, open covers and vents. Do not use electronic devices
that are not rated for use in hazardous locations or have live,
exposed electrical circuits in or around basins, open covers
and vents. Sewage and effluent systems produce and may
contain flammable and explosive gases and sparks could
ignite these gases.
Wear adequate Personal Protective Equipment when working
on pumps or piping that have been exposed to wastewater.
Sump and sewage pumps often handle materials that can
transmit illness or disease upon contact with skin and other
tissues.
Do not enter a pump basin after it has been used. Sewage
and effluent can emit several gases that are poisonous.
Verify correct 3-phase pump rotation before retuning to
service.
RISK OF FIRE
RISK OF SERIOUS INJURY OR DEATH
RISK OF ELECTRIC SHOCK
RISK OF FIRE
RISK OF SERIOUS INJURY OR DEATH
