Emerson GXT2U User Manual

This button controls output power to connected load(s) and has three 

functions:
• ON
• Alarm Silence
• Manual Battery Test
ON - Pressing this button will start up the UPS in order to provide 

conditioned and protected power.

Alarm Silence - To silence alarms, press this button for at least one second. 

After the alarm is silenced, the Liebert GXT2U will reactivate the alarm 

system to alert of additional problems.

Manual Battery Test - To initiate a manual battery test, press the ON 

button for at least one second while operating from utility power with no 

alarm conditions present. 
• If only three of the five Battery LEDs illuminate, allow the UPS to recharge 

the batteries for 24 hours.

• After  24  hours,  retest the batteries.
• After the batteries have been retested, if only three of the five Battery 

LEDs illuminate, contact your local dealer, Liebert representative or Lie-

bert Worldwide Support Group.

NOTE
The LOW BATTERY and BYPASS reminder alarms CANNOT be