Liebert DM Series User Manual

Chapter 5 Micro-Processing Controller 27
New Liebert_DM Series Air Conditioner User Manual
More detailed operating status of certain component and alarm information are available from the Main Menu screen.
The selected menu item will be highlighted while browsing. The digit to be changed will be highlighted while you are
changing setting.
5.4 Control Buttons
5.4.1 Function Description
The micro-processing controller provides five control buttons, as shown in Figure 5-3.
ON/OFF button
Enter button
Esc button
Down button
Up button
Figure 5-3 Control keypad
The functions of the control buttons are described in Table 5-1.
Table 5-1 Function descriptions of control buttons
Control button
Function descriptions
ON/OFF button
Press this button for 3s to turn on or off the unit
Enter button (ENT)
Enter the selected menu screen. Validate the parameter setting value
Esc button (ESC)
Exit the current menu and return to the Normal screen or previous menu screen. Abort parameter change;
silence the audible alarm
Up button
Move the cursor up or increase the parameter value. For a toggle selection: scroll through the options. For
a multi-screen menu: scroll up the screen
Down button
Move the cursor down or decrease the parameter value. For a toggle selection: scroll through the options.
For a multi-screen menu: scroll down the screen
5.4.2 Operation Example
Example 1: Inputting password to enter the Main Menu
After the unit is started up, you can enter the Main Menu through conducting the following operations on the Normal
screen.
1. Press the Enter button to enter the Password screen.
2. Press the Enter button to highlight the input data field in the Password screen.
3. Press the Up or Down button to change the current password number.
4. Press the Enter button to confirm the password and enter the Main Menu screen.
Example 2: changing parameters
Taking Hi Temp in Alarm Output screen as an example, the procedures are as follows:
1. Press the Up or Down button to move the cursor on the Alarm Menu menu in the Main Menu screen.
2. Press the Enter button to enter the Alarm Menu menu.
3. Press the Up or Down button to move the cursor on Alarm Output in the Alarm Menu screen.
4. Press the Enter button to enter the Alarm Output screen.
5. Press the Up or Down button to move the cursor on Hi Temp.
6. Press the Enter button to highlight the parameter field of Hi Temp.
7. Press the Up or Down button to select the parameter option.
8. After selecting, press the Enter button to confirm. The parameter will take effect.
9. Press the Esc button to return to the previous menu screen.

Liebert DM Series Specifications

General

Brand	Liebert
Model	DM Series
Category	Air Conditioner
Language	English