Section 4: Glossary of Control Functions
unit is turned ON. During the Hold Delay no alarms are annunciated from the started unit or any unit in the system.
If the Standby unit has an alarm, the Running unit is restarted if DIP switch
Autosequencing
An optional operating mode in which Standby units are periodically sequenced to RUN to balance operating time among all units. Select Autosequencing ON or OFF from the display. Note that Autosequencing and Standby Testing cannot both be ON at the same time.
When Autosequencing is ON, periodically the Standby and Running units are changed to balance unit running time. This interval (in days) and time of day are user selected from the display. When this changeover Occurs, the Standby unit becomes a running unit, and the Running unit that has been running the longest becomes the Standby Unit. Messages are written to the terminal to record the status changes. Status screens show new unit status at the local display.
After a changeover, the newly started unit may briefly have a High Temp or other alarm. A user selectable Hold Delay begins when any unit is turned ON. During the Hold Delay no alarms are annunciated from the started unit or any unit in the system. If the newly started unit has an alarm at the end of this delay (plus the Alarm Delay), this unit is shut down, and the previously running unit is restarted. An alarm is indicated on the LCD and the alarm is annunciated.
Liebert
