Instructions / Assembly

7035000P Copyright © Liberty Pumps, Inc. 2019 All rights reserved. 7 | EN
Installation
 All installation and maintenance of pumps, controls,
protection devices, and general wiring shall be done by
qualified personnel.
 All electrical and safety practices shall be in accordance with
the National Electrical Code
®
, the Occupational Safety and
Health Administration, or applicable local codes and
ordinances.
Electrical Connections
With main power disconnected, complete pump and control
wiring connections per manufacturer’s wiring diagrams included
with the control panel as applicable. Once connections are made,
all wires should be checked for unintentional grounds.
3-Phase Pump Rotation Verification
 Check 3-phase pumps for correct rotation prior to installing
pump(s) in basin. To change rotation, reverse any two of the
three power leads to the pump (not the ground). Code the
wires for reconnection after installation.
3-phase power uses three separate
alternating currents that peak at different
integrals. With pumps that are powered by
three phase electric, the phase sequence of
the motor must match the phase sequence
of the power source. When the phase
sequences match, the pump operates
properly.
However, when the phases are out of order, the pump runs
backward (i.e., the impeller rotates in the wrong direction). This
causes an extreme loss of performance and could raise the current
draw, which could result in tripping an overload or circuit breaker.
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 leads to the pump (not ground). This reverses the
phase sequence and corrects the pump rotation. For 3-phase
pumps, rotation must be counterclockwise when looking from the
bottom of the pump. Label the wires for reconnection after
installation.
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 Guide Rail
System features a self-aligning mounting bracket. Contact Liberty
Pumps for available models, such as GR22 and GR30 for FL-Series
models.
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.
Discharge
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 that which is provided
on the pump. 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
 Single-phase 208/230V pumps shall only be operated
without the float switch by using the circuit breaker or panel
disconnect.
IMPORTANT: Verify breaker is turned off before plugging in the
switch.
Plug the piggyback switch into the receptacle. The receptacle
must be wired to an appropriately sized breaker. Plug the pump
into the piggyback receptacle. Install the cable clamp (if supplied)
for strain relief.
Figure 1. Piggyback Switch Operation
RISK OF ELECTRIC SHOCK
BOTTOM VIEW
ROTATION
RISK OF ELECTRIC SHOCK
Temporary Manual
O
p
eration
YES!NO!
Install cable
clamp to wall
for strain relief
Temporary Manual
O
p
eration
YES!NO!