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Microprocessor Control
41 Liebert
®
Mini-Mate2
™
6.4 Status
The operator can monitor the percentage heating, cooling, dehumidifying and humidifying status of
the unit by selecting the “STATUS” sub-menu.
6.5 Active Alarms
The operator can monitor the alarms status by selecting “ALARMS” which will display a “No Alarm
Present” or “Alarm XX of YY” alert and description. If more than one alarm is activated, use the UP or
DOWN arrow to scroll through the alarms list. (“XX” reference is the number of the alarm shown,
while the “YY” reference is the total number of alarms activated).
6.6 Time
The controller time clock must be set to allow for the setback control. The clock uses the 24-hour
system (i.e., midnight is entered as 24:00). To change the time press Enter to select the function, then
use the Up and Down arrows to change the first character, press Enter to store, then press the Up or
Down arrows to change the character, press Enter to store, etc. THERE IS A BATTERY BACKUP
FOR THE DATE AND TIME FEATURES.
6.7 Date
The controller date must be set to allow for setback control. To change the date press Enter, then use
the Up and Down arrows to change the first character, press enter to store, press the Up and Down
arrows to change the second character, etc.
6.8 Setback
The microprocessor can be programmed for night and weekend setback. Two (2) events can be
programmed for a five-day work week and two (2) events can be programmed for a two-day weekend.
The following table can be used to devise a setback plan.
Table 16 Default setpoints and allowable ranges
Setpoint Default Range
Temperature Setpoint 72°F 40-90°F (5-32°C)
Temperature Sensitivity 2.0
°F1-9.9°F (0.6-5.6°C)
Humidity Setpoint 50% 20-80% RH
Humidity Sensitivity 5% 1-30% RH
High Temperature Alarm 80
°F 35-95°F (2-35°C)
Low Temperature Alarm 65
°F 35-95°F (2-35°C)
High Humidity Alarm 60% 15-85% RH
Low Humidity Alarm 40% 15-85% RH
Table 17 Night and weekend setback plan
Event Weekend Weekday
Time 1
Temperature1
Sensitivity 1
Humidity 1
Humidity Sensitivity 1
Time 2
Temperature 2
Sensitivity 2
Humidity 2
Humidity Sensitivity 2