Commissioning the ups – Liebert GXTTM User Manual

Page 25

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23

COMMISSIONING THE UPS

Output Voltage Selector Switches
The Output Voltage Selector Switches, located on the rear of the UPS, are
designed to allow selecting or changing the desired output voltage to match the
mains. The settings to choose from are 208, 220, 230, and 240 VAC output.

NOTE: NEVER change the switch settings while UPS is on and powering
connected loads.

NOTE: Setting output voltage to 208 VAC will cause UPS unit to be derated to
90% of the VA and Watt rating listed in specification section.


1. Adjust the output voltage switch settings to the desired value.

2. Follow the instructions for Powering up the UPS referenced earlier in this

manual. Sequence through the operating modes, using the front panel
pushbuttons, in accordance with operating instructions to check functionality
of the UPS.

3. Set the UPS to UPS mode. Check on the output terminals of the UPS, for the

correct output voltage for the voltage rating of the intended loads.

4. Check operation of the remote shutdown circuit (If fitted).

5. In UPS mode, power up customers load and check that it is within the UPS

rating by observing the front panel LED’s

6. In UPS mode, press the UPS ON/ALARM /BATTERY TEST pushbutton to

carry out battery test and ensure the load can be supported. Note- Full
battery capacity will not be available until a battery recharge cycle has been
completed.

The UPS is now ready for service In case of problems refer to the fault finding
section or call your local distributor for advice.

230 & 230X Units

208 V

220 V

230 V

240 V

áá - both switches up
áâ - first switch up, second down
ââ - both switches down (Factory Default)
âá - first switch down, second up

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