Operation - Liberty Pumps LSG Serie Manuel D'installation

To ensure that the power to the pump is installed correctly, always
verify proper rotation before lowering it into the basin. If the
pump is rotating in the wrong direction, turn off the power and
reverse any two power leads. This reverses the phase sequence
and corrects the pump rotation. Rotation must be clockwise when
looking from the top of the pump.
Guide Rail System
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. Liberty Pumps GR20 Guide
Rail System features a self-aligning mounting bracket. Contact
Liberty Pumps for more information.
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 recommended 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.
Piggyback Switch Operation
IMPORTANT: Verify breaker is turned off before plugging in the
switch.
Plug the piggyback switch into a 6-20R receptacle.
The receptacle must be wired to a 30 Amp breaker.
Plug the pump into the piggyback receptacle.
Install cable clamp for strain relief.
NO! YES!
Figure 3. Piggyback Switch Operation
– 8 –
G
6-20R
Install cable
clamp to wall
for strain relief
Temporary Manual

Operation

Copyright © Liberty Pumps, Inc. 2019 All rights reserved.
Automatic Pump Direct Wiring
The pump can run on a voltage rating of 208V or 230V. Verify that
it is the same as the supply voltage. The pump is supplied with a
6-20P (20A) cord plug end. If a 1-phase pump will be wired
directly into a junction box, and it is necessary to remove the plug,
a certified electrician shall complete the wiring in accordance with
the National Electric Code and applicable local codes. A
disconnecting means for the pump shall be located in sight from
the pump/basin location. See Figure 4 for direct wire installation
of 1-phase, automatic pumps.
Power
Supply
Green
White
Black
Figure 4. Direct Wiring of 208/230V, 1-Phase, Automatic Pumps
Operation
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 pump and control panel, if
applicable.
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.
G
6-20P
Junction Box
Ground
Green
White
Black
Black White
Float
Switch
Pump
5647000K