©Copyright 2016 Liberty Pumps Inc. All rights reserved 4
4.
Control Panel:
Risk of Electric shock:
This pump is supplied with a grounding conductor. To reduce the risk of
electric shock, be certain that it is connected only to a properly grounded earth wire. All electrical circuitry should be
installed in accordance all applicable national (NEC, IEC, EN, etc.) and local electrical codes and ordinances.
The control panel that is an integral part of this complete unit is supplied with its own separate
Installation/Operation/Maintenance manual. Ensure that you have received this manual, and that you read and
understand it prior to installing this unit. Your familiarity with the control panel manual is critical.
A separate electrical circuit should be installed for the control circuit. We do not recommend splitting the incoming
pump power circuit to power the control circuit. Connect the grinder pump leads and the float switch leads to the
control panel in accordance with the instructions included with those units.
5.
Float Switches
:
The float switches are pre-mounted on a float bracket. The pump cycle is pre-set at the factory
according to the depth of the basin, see chart below.
The pump cycle can be adjusted by loosening the cord
clamp and moving the “on” float up or down
. We do not recommend adjustments of more than 3” in either
direction
– please call the factory if you need to adjust the pump cycle beyond this recommended level.
6.
Testing and Startup:
Follow the testing and startup procedures found in the grinder pump and control panel
manual. For three phase models, remember to check for proper rotation.
4
QE-Series Quadplex Control Panel
The Q4800 Quadplex system will include a QE-Series Quadplex control panel, properly sized for the pumps and Voltage.
This control panel is designed to be used in multiple configurations to meet the needs of the application. The panel is
capable of operating up to four pumps at once, and make use of between (3) three and (6) six float switches. The Q4800
Package will come with six (6) float switches pre-installed at the heights shown in the table on page 5.
A three-float system will have a pump(s) off switch, a lead pumps switch, and lag/alarm switch. The off switch controls the
water level the pumps will turn off. The lead pumps switch will turn on two (2) of the four (4) grinder pumps, and continue
to the run the pumps until the water level falls to the off switch level. The lag/alarm switch will turn on the other two (2)
grinder pumps that were not running, and trigger a high level alarm. Jumper wires must be added to the terminal blocks in
order to run the system with three floats. See wiring instructions on page 6.
A four-float system will have a pump(s) off switch, a lead pumps switch, a lag pumps switch, and an alarm switch. The off
switch controls at what water level the pumps will turn off. The lead pumps switch will turn on two (2) of the four (4)
grinder pumps, and continue to the run the pumps until the water level falls to the off switch level. The lag pumps switch
will turn on the other two (2) grinder pumps that were not running. The alarm switch will trigger a high level alarm.
Jumper wires must be added to the terminal blocks in order to run the system with three floats. See wiring instructions on
page 6.
A five-float system will have a pump(s) off switch, a lead pump switch, a lag1 pump switch, a lag2 pump switch, and a
lag3/alarm switch. The off switch controls at what water level the pumps will turn off. The lead pump switch will turn on
one (1) of the four (4) grinder pumps, and continue to the run the pump until the water level falls to the off switch level.
The lag1 pump switch will turn on a second grinder pump that was not running. The lag2 switch will turn on a third grinder
pump that was not running. The lag3/alarm switch will turn on the final grinder pump and trigger a high level alarm.
Jumper wires must be added to the terminal blocks in order to run the system with three floats. See wiring instructions on
page 6.
A six-float system will have a pump(s) off switch, a lead pump switch, a lag1 pump switch, a lag2 pump switch, a lag3
pump switch, and an alarm switch. The off switch controls at what water level the pumps will turn off. The lead pump
switch will turn on one (1) of the four (4) grinder pumps, and continue to the run the pump until the water level falls to the
off switch level. The lag1 pump switch will turn on a second grinder pump that was not running. The lag2 switch will turn
on a third grinder pump that was not running. The lag3 switch will turn on the final grinder pump. The alarm switch will
trigger a high level alarm. The panel comes preset for six-float operation and no jumper wires are required.
