Liebert 50 & 60Hz User Manual

Each individual alarm can be programmed with a time delay (Table 13), causing the unit to delay a 

specified amount of time (0-255 seconds) before recognizing the alarm. The alarm condition must be 

present for the full amount of the time delay before the alarm will sound. If the alarm condition is 

diverted prematurely, the alarm will not be recognized and the time delay will automatically reset.

Each individual alarm can be selected to activate/deactivate the common alarm relay. If the energize 

common alarm function is set to YES, the relay is energized immediately as the alarm is enunciated, 

and de-energized when the alarm condition has cleared. If the alarm is completely DISABLED, the 

alarm has no effect on the common alarm relay. Use the UP/DOWN arrows to scroll to a particular 

alarm, press the ENTER button to select it, then press the ENTER key again to select Yes or No.

The custom alarm messages can be selected from a list of standard alarm messages, or the operator 

can write his/her own message. A MAXIMUM OF THREE (3) ALARM MESSAGES CAN BE CUS-

TOMIZED.
The text for custom alarms can be changed at any time by selecting “CUSTOM ALARMS”. To change 

the text for a custom alarm, select the alarm you would like to change, 1, 2 or 3. Using the UP/DOWN 

arrows, step through the list of seven standard alarm messages (listed below) and two custom alarms. 

Select the alarm message desired and store it by pressing ENTER.

• SMOKE DETECTED
• CUSTOM  2
• CUSTOM  3
• STANDBY GC PUMP
• WATER FLOW LOSS
• STANDBY UNIT ON
• CUSTOM  1

Hum Prob

2

Chng Fltr

2

Custom Alarm #1

0

Custom Alarm #2

0

Custom Alarm #3

0

High Temperature

30

Low Temperature

30

High Humidity

30

Low Humidity

30

Short Cycle 1 & 2

0

Loss of Power

0