8 | EN
Copyright © Liberty Pumps, Inc. 2020 All rights reserved.
2399000D
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 wiring is complete,
check all wires for unintentional grounds.
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.,
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.
Automatic Pump Direct Wiring
In 208/230V installations, one side of the line going to the
pump is always “hot”, whether the float switch is on or off. To
avoid hazards, install a double pole disconnect near the pump
installation.
If the pump will be wired directly into a control device or junction
box, it is necessary to remove the plug. Qualified personnel 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 2 for direct wire installation of automatic pumps.
Figure 2. Direct Wiring of Automatic Pumps
Piggyback Switch Operation
Single-phase 208/230V pumps shall only be operated without
the float switch by using the circuit breaker or panel
disconnect.
Some products may have internal capacitors that could cause
shock. Avoid contact with plug ends after removing from
energy source.
For automatic operation
, the two cords should be interconnected
and plugged into a separately fused, grounded outlet of proper
amp capacity for the selected pump model. Both cords are
equipped with 3-prong plugs and must be plugged into a
properly grounded 3-wire receptacle.
Do not remove the ground
prongs.
For manual operation
, or in the event of switch failure, the pump
cord can be separated and plugged into the electrical outlet
directly, bypassing the switch and using the circuit breaker or
panel disconnect to operate the pump.
Figure 3. Piggyback Switch Operation
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 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.
RISK OF SERIOUS INJURY OR DEATH
Ground
Black
Junction Box
Power
Supply
White
Float
Switch
Pump
Green
Black
White
Green
Black
White
RISK OF ELECTRIC SHOCK
RISK OF SERIOUS INJURY OR DEATH
Temporary Manual
Operation
YES!
NO!
