Product Manual

Single phase duplex panels are designed to oper-
ate with three or four fl oats for pump sequencing.
The standard fl oat functions are common pump
stop, lead pump start, lag pump start/alarm (three
fl oats), or separate lag and alarm fl oats (four
fl oats).
Three Float Operation: As the liquid level rises
to the stop fl oat and tips it to the ON (closed)
position, the panel will remain inactive. As the
liquid level tips the lead fl oat, the lead pump will
start. If the liquid level tips the lag/alarm fl oat, the
lag pump will start and the audio/visual alarm will
activate. Both pumps and the alarm will remain
active until the liquid level drops and the lag fl oat
is in the OFF (open) position. At this time the alarm
will silence. Both pumps will remain on until the
liquid level drops to normal and all three fl oats
are in the OFF (open) position. When both pumps
have stopped running, the alternator will switch
the lead pump and lag pump operating functions
in the next sequence.
Four Float Operation: The alarm will activate
and remain on only if the alarm fl oat is tipped to
the ON (closed) position.
Alarm System (Horn and Indicator -
standard)
When an alarm condition occurs, a red light and
a horn will be activated. If the test/normal/silence
switch is moved to the silence position, the horn
will be silenced. When the alarm condition is
cleared, the alarm system is reset. The alarm
system can be tested by moving the test/normal/
silence switch to the test position.
HOA Switch
A hand-off-automatic switch is provided for each
pump. In the hand mode, the pump will turn on
unless other safety features are employed. In
the automatic mode, the pump will turn on from
commands by the fl oat switch(es).
Pump Run Lights
The run light will be ON in either the hand or the
automatic mode when the pump is called to run.
Control and Alarm Fusing
The control circuit and alarm circuit are fused
separately.
Operations
Control and Alarm Lights
Lights will illuminate when control/alarm power is
supplied.
Float Status Lights
Lights will illuminate when the respective fl oat is
in the closed position.
Circuit Breaker (optional)
The pump circuit has a thermal-magnetic circuit
breaker which provides pump disconnect and
branch circuit protection.
Dry Auxiliary Contacts
(standard feature)
Normally open - Contacts are open under nor-
mal conditions and closed when alarm condition
is present.
Normally closed - Contacts are closed under
normal conditions and open when alarm condition
is present. Both types automatically reset once
alarm condition is cleared.
NOTE: Some options ordered may not be included
in this manual. Certain options will require alterna-
tive circuitry not including fl oat status and control/
alarm indicators.
For information regarding the operations
of options not listed here or servicing
questions, please call a Liberty Pumps
customer service technician at
1-800-543-2550
Warranty void if panel is modifi ed.
7249000B
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