Liberty Pumps SX-Series - Manual (Page 4)

Simplex control panels are designed to operate in
a three fl oat system as standard. When all fl oats
are in the open or OFF position, the panel is inac-
tive. As the liquid level changes and closes the
stop fl oat, the panel remains inactive until the start
fl oat also closes. At this point the pump will start,
providing the HOA switch is in the AUTOMATIC
mode and the power is ON. The pump will remain
ON until both the stop and start fl oats open (return
to the OFF position). If the liquid level travels be-
yond both the stop and start fl oats and reaches the
alarm fl oat, the alarm will be activated. The alarm
horn can be silenced by moving the test/normal/
silence switch to the silence position.
Alarm System (Horn and Indicator)
When an alarm condition occurs, a red light and
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 the
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 com-
mands by the fl oat switches.
Operations
Pump Run Light
The run light will be ON in either the hand or the
automatic mode when the pump is called to run.
Circuit Breaker (optional)
The pump circuit has a thermal-magnetic circuit
breaker which provides pump disconnect and
branch circuit protection.
Dry Auxiliary Contacts (optional)
Normally open - Contacts are open under normal
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 in-
cluded in this manual.
7203000B
- 4 -
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.