Microprocessor Control; Feature Overview; Figure 26 Control Key Locations-All-Mounted Display Box - Liebert Mini-Mate2 MMD24E User Manual

6.0 M
ICROPROCESSOR
The Microprocessor Control for the Liebert Mini-Mate2 features an easy to-use, menu-driven liquid
crystal display. The menus, control features and circuit board details are described in this section.
Detailed information concerning controls (7.0 - System Performance Microprocessor Controls)
and alarms (8.0 - Alarms) are provided.
6.1

Feature Overview

To turn the unit ON, press the ON/OFF (I/O) key after power is applied. To turn the unit OFF, press
the ON/OFF (I/O) key before power is disconnected.
The following control keys may be used to move through the menus, as prompted on the LCD:
• On/Off (I/O): Turns unit on or off (top far left).
• Menu: Enables user to access the program menu to change control parameters, alarms, setback
schedule, etc. (top near left).
• Up Arrow: Increases the value of displayed parameter while in a set mode (setpoints, time, etc.)
(Arrow-top near right).
• Fan Speed (HI/LO): Changes the fan speed between high and low fan speed on direct-drive blower
models; not available on high-static belt-driven motor (bottom far left, when present).
• Escape (ESC): Allows user to move back to a previous menu (top far right).
• Alarm Silence/? (Help): If an alarm is present, pressing this key will silence he alarm. If this key
is pressed when no alarms are present, help text will appear (bottom near left).
• Down Arrow: Decreases the value of displayed parameter while in a set mode (bottom near right).
• Enter (ENTER): After setting a control point, press Enter to store the information in the
microprocessor (bottom far right).
Figure 26 Control key locations—all-mounted display box
Menu Key
On/Off Key
Fan Speed Key
Alarm Silence/
Help Key
Active alarms appear on the LCD and sound an audible beeper. To silence an alarm, press the
Alarm Silence/Help key as prompted on the display.
Setpoints, DIP switch settings and other selections were made during factory testing of your unit and
are based upon typical operating experience. (Other default selections were made according to options
included with your unit). MAKE ADJUSTMENTS TO THE FACTORY DEFAULT SELECTIONS
ONLY IF THEY DO NOT MEET YOUR SPECIFICATIONS.
Allowable ranges are displayed by pressing the help key. A password will be required (if enabled) to
change setpoints, time delays, etc.
The display normally shown includes the present room temperature, humidity, active status
functions (cooling, heating, dehumidifying, humidifying), normal fan speed/low fan speed and active
alarms. The Status Display may also be selected from the Main Menu.
C
ONTROL
43

Microprocessor Control

Up Arrow
Escape Key
Enter Key
Down Arrow
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Liebert Mini-Mate2
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