Liebert GXTTM user manual Starting the UPS, Powering Down the UPS

STARTING THE UPS

1.Ensure the load equipment is turned off, and all loads are properly connected to the UPS output.

2.Check that the mains wall isolator is ON. Turn On (Close) the Battery circuit

breaker, the Input and Output circuit breakers in that order. The UPS will now automatically start up and default to BYPASS mode once the UPS is connected to an active AC mains supply and the Battery and Input circuit breakers are closed. At the end of the startup sequence the BYPASS LED should be lit.

3.TO PROTECT YOUR LOAD YOU MUST NOW PRESS THE UPS ON/ALARM /BATTERY TEST BUTTON TO GO TO UPS MODE

4.Press the UPS ON/ALARM /BATTERY TEST button for at least one half second until you hear the audible alarm give a “Beep” to signal acceptance of the command. After a delay of about 10 seconds, the BYPASS LED will extinguish and the UPS ON LED should light. The UPS will then initiate a self-test and a battery test. When these tests are complete, the UPS is ready for NORMAL UPS operation. Connected load equipment may now be started.

POWERING DOWN THE UPS

1.Check to ensure that all connected load equipment is shutdown. Press the OUTPUT OFF/ BYPASS button until a “Beep” is heard. Release the button and then immediately press for at least one second. The UPS ON LED will extinguish and the BYPASS LED will light for a short period then extinguish.

When the AC input LED and the bottom LED of the BATTERY/LOAD array are lit and the UPS ON and BYPASS LED’s extinguish, the output is powered down.

2.If necessary to isolate the UPS, set the input, output and battery breakers on the rear of the UPS to OFF position. Finally for complete isolation turn OFF the wall mounted mains isolator.

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