Emerson AC4 Manuale Utente

The Setup System Info options allow users to:

• Change Password—used for access to system setup functions
• Set Date & Time/Automatic Daylight Saving Time—used to set the Liebert AC4 date and 

time and to enable automatic time change for Daylight Saving Time

• Setup Site ID—the Liebert AC4’s location to differentiate among sites if more than one Liebert 

AC4 is in use

• Backup and Upload Configuration File (Service Terminal Interface only)—permits the 

user to copy the Liebert AC4’s configuration settings and to upload the file to the Liebert AC4

• Factory Defaults—returns the Liebert AC4 to its factory settings
• Perform Firmware Update (Service Terminal Interface only)—changes the Liebert AC4’s 

firmware to newest version

To change any Setup System Info features:

• From the Main Menu, use the arrows

↑↓

 to

 

choose System and 

Control, then press Enter ↵ (see 7.1 Login for help).

• Enter your password at the Login screen.
• From the System and Control Menu, use the arrows

↑↓

 to

 

choose 

Setup System, then press Enter ↵.

• From the Setup System Menu, shown at right, use the arrows

↑↓

 

to

 

choose Setup System Info and press Enter ↵.

• Use the following steps to access any of the Setup System Info options.

A password is required to access the Liebert AC4’s system and control 

options, as described in 7.1 Login. The password consists of four 

characters (see Table 12 for valid characters). The default password 

is AAAA.

To change the password:

• From the Setup System Info Menu, use the arrows

↑↓

 to

 

choose 

Change Password, then press Enter ↵.

• To change your password:

• Use the arrows

↑↓

 to

 

choose a character.

• Press Enter ↵ to advance to the next character position.
• When finished, press Enter ↵ again.

To reset the password to the factory default of AAAA:

• Locate DIP switch 1 on the unit’s circuit board (see 1.6 Controller Board Overview) and move 

all switches to the OFF position (down).

• Move the second switch to the ON position, then to the OFF position.
• Move the seventh switch to the ON position, then to the OFF position.
• Move the eighth switch to the ON position, then to the OFF position.

The password should now be AAAA.

SETUP INPUTS
SETUP COMMON ALARM
SETUP ZONES

↑↓=NEXT

↵

=SELECT

SETUP OUTPUTS

SETUP OPERATION 

SETUP SYSTEM INFO

SET DATE & TIME

↑↓=NEXT

↵

=SELECT

SETUP SITE ID
FACTORY DEFAULTS

CHANGE PASSWORD

AAAA

↑↓=SELECT 

↵

=NEXT/END