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5.5.3 Normal interface
After startup, when 10s (default setting) of hot startup delay is passed or ENTER key is pressed, the normal interface
will be displayed, as shown in Fig.5-6. The normal interface displays the current temperature, humidity, equipment
running status (cooling, heating, dehumidification, humidification), unit property (single unit, master, slave), unit
running status (running, standby, locked), alarm message and the current date and time.
5.5.4 Password interface
Press ENTER on the normal interface, the password interface will display, as shown in Fig.5-7.
There are three levels of password for entering the menu, as shown in Table 5-2.
Password
level
Common
Level 1
operator
Maintenance e
Level 2
personnel
Manufacturer's
Level 3
technician
For the detailed operation of password entry, please refer to 5.4.2 Operation example.
If wrong password is entered, you cannot change any setting value, you can only browse the menu contents. At this
time, you can press EXIT key to return to the normal interface and then press ENTER to enter the password interface.
Note
Directly press ENTER rather than entering the password on the password interface, you can view the setting value of
the menu, but cannot change any parameter.
5.6 Menu structure
5.6.1 Main menu
Enter the password and press OK on the password interface, the main menu will be displayed, as shown in Fig.5-8.
For the menu structure, please refer to Appendix II Menu structure diagram. When any menu item is selected, this
menu item will be highlighted. The menu items include settable parameter and unsettable parameter. For the detailed
Initial
user
password
0001
User Manual of Liebert_DM Chilled Water Series Cooling Unit
Starting
10s
Fig.5-5 Startup interface
SIG
28
C
Cool
RUN
50%rh
Hum
High Temp
1/4
2009/01/11 00:00
Fig.5-6 Normal interface
Password: 1 ***
Fig.5-7 Password interface
Table 5-2 Password level
User of this level is able to browse all the menu information, but he/she can only
set the temperature/humidity setting point (as shown in Fig.5-17), and cannot
modify any other value or setting.
User of this level is able to set all the parameters
Chapter 5 Microprocessor
Remark
23
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