Liebert Refrigerant Distribution Unit XDP - Manual (Page 33)

Microprocessor Control
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4.3.14 CUSTOM ALARMS
This is the menu where the user selects the alarm message that will be displayed when there is an
input to the customer alarm input on the control board. This menu has four choices: one user-defined
custom message (see CUSTOM TEXT below for details) and three preprogrammed messages:
• SMOKE DETECTED
• CUSTOM 1 (default custom message. If the user enters a custom text message, that custom text
will replace “CUSTOM 1.”)
• WATER FLOW LOSS
• STANDBY UNIT ON
1. Press the ENTER button to access the menu
2. Use the Up or Down arrow key to view the messages.
3. Press the ENTER button to select the message to be displayed.
4.3.15 CUSTOM TEXT
This menu permits the user to set up a custom text message with a maximum length of 16 characters.
The message may use any of the following characters or a blank space:
ABCDEFGHIJKLMNOPQURSTUVWXYZ#%*-0123456789
This custom text can be designated as the custom alarm text in the “CUSTOM ALARMS” menu (see
CUSTOM ALARMS above). To define the message:
1. Press the ENTER button to access the menu.
2. Use the Up or Down arrow key to change the character with the pointer below it.
3. Press the ENTER button to go to the next character.
4. Repeat the steps for all characters in the message (maximum of 16 characters).
5. Press the ENTER button to accept new custom text.
4.3.16 DIAGNOSTICS
This allows the user to perform checks on inputs, outputs, and conduct a test of the Liebert XDP con-
trol board from the wall box.
Entering the “TEST OUTPUTS” will interrupt system operation. Selecting “TEST INPUTS” or “TEST
MICRO” will not interrupt system operation. Pressing ENTER and selecting “TEST OUTPUTS” will
permit the user to toggle the following outputs On and Off:
PUMP 1—On/Off
PUMP 2—On/Off
CTR VALVE XX.Xma—OPEN/CLOSE (control valve and 4-20mA feedback signal)
GREEN LAMP—On/Off
RED LAMP—On/Off
COMMON ALARM—On/Off
Pressing ENTER and selecting “TEST INPUTS” will permit the user to read the following inputs:
INPUT POWER—On/Off
CONDENSATION—On/Off (condensation detection)
DIFF PRESSURE—On/Off (differential pressure switch)
CUSTOMER ALARM—On/Off
Pressing ENTER and selecting “TEST MICRO” will permit the user to test the microcontroller and
associated circuitry on the Liebert XDP control board.