Chapter 5 Precision Air Conditioner Controller; Appearance; Control Button; Function Description - Liebert DM User Manual

Chapter 5 Precision Air Conditioner Controller

This chapter expounds the appearance, control button, indicator, control interface and menu structure of PACC11Z
precision air conditioner controller (controller for short).
The controller adopts menu operation. It is used to monitor, display and operate the precision air conditioner (AC) to
maintain the environment within the setting range. The display board of the controller adopts a 240 ×128 LCD screen
with blue back lighting for clear display of text and graphics.

5.1 Appearance

The controller is shown in Figure 5-1.

5.2 Control Button

5.2.1 Function Description

The controller provides five control buttons (see Figure 5-1), including ON/OFF button, ESC button, UP button,
ENTER button and DOWN button. Their detailed functions are listed in Table 5-1.
Button
ON/OFF
ESC
UP
ENTER
DOWN
ENTER + UP
ENTER + DOWN

5.2.2 Operation Example

Example 1: Inputting the password to enter the Main Menu
After the controller is powered on, you can enter the Main Menu through conducting the following operations on the
main interface.
1. Press the ENTER button to enter the password interface.
UP button
ENTER button
DOWN button
Running indicator Alarm indicator
Figure 5-1 Controller appearance
Table 5-1 Control button functions
Turn on or off the controller
Return to the previous menu. Abort parameter change. Press and hold the button to enter the
help menu for listing the max., min. and default values and a brief description of the data field.
Upon alarms, press the button to silence the audible alarm
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
Enter the next level menu or validate the parameter setting value
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
View the previous AC unit state (note that the UP button should be pressed second, but
released first)
View the next AC unit state (note that the DOWN button should be pressed second, but
released first)
Liebert_DM 16kW Air Conditioner User Manual
Chapter 5 Precision Air Conditioner Controller
LCD screen
Function descriptions
ON/OFF button
ESC button
35