Liberty Pumps PDC-Series - Manual (Page 5)

©Copyright 2013 Liberty Pumps Inc. All rights reserved 5
Operator Controls
– On Primary Power
An operator has access to front – panel push-button controls to change the horn enable status, to test the alarm circuits,
and to manually run the pumps. Each pump is protected by a manual resettable fuse; the fuses are located on the side
panel.
Control Push-
button Existing Conditions(s) Action When Pressed
*HORN ENABLE
/ DISABLE HORN DISABLED
indicator is blinking Horn Disable indicator will turn OFF and the horn be Enabled
HORN DISABLE
indicator is OFF. Horn Disable indicator will start blinking and the horn will be
disabled for 12 hours. After 12 hours, the indicator will turn
OFF automatically and the horn will then be Enabled.
ALARM TEST Alarm indicator, auxiliary relay, and horn (if enabled) turn On.
These actions remain until the button is released.
MANUAL RUN A pump is running The pump that is running will be turned OFF; the next pump in
sequence will be turned ON. That pump will remain on as long
as the button is held. When the button is released, that pump
will turn off if the condition calling for a pump to run is no
longer present.
Neither pump is running The next pump in sequence will be turned ON and will remain
on Until the button is released.
SYSTEM
RESET Alarm, Pump 1 and / or
Pump 2 LED’s are
blinking The system will reset and the Alarm, Pump 1 and / or Pump 2
LED’s will stop blinking.
FUSE Blown fuse Manual resettable fuse
*Horn disable LED is on PDC-115 and PDC230 units only. Outdoor units, PDCW-115 and PDCW-230, have
an alarm silence switch on the exterior of the unit.
General operation
– On Alarm Backup Power
On alarm backup power, the controller CANNOT run the pumps. Pumps will ONLY operate when primary (115Vac or
230Vac) is supplied to the control panel.
The Alarm Float switch mounted in the tank is used to monitor liquid level to possibly indicate when an alarm level might
be reached. The Pump Float switch is not used when the panel is on alarm backup power, since pumps cannot operate.
Front panel indicator show various operating conditions like alarm status, horn disable status, and other conditions.
Operator push-button controls are available to manually test the alarm circuits, and to disable the alarm horn.
When the liquid level drops below the Alarm Float, the switch will be open and there is no alarm condition; when the liquid
level rises above the ALARM Float, the switch will be CLOSED and an alarm condition will be indicated.
Alarm Operation
– On Alarm Backup power
While on alarm backup power, if water fills the tank and the liquid level rises above the Alarm Float, the float switch will be
ON and an alarm condition is activated. The following occurs when an alarm condition activates:
1) The alarm indicator on the front panel of the controller will blink.
2) The auxiliary relay will activate once for one minute, closing its normally open contacts and opening its normally
closed contacts, then will de-activate.
3) If the horn is enabled (i.e. its indicator is NOT blinking) the horn will beep.