Emerson Dual Conversion Online UPS GXT3-6000RT208 User Manual

This section describes checks to be made before starting the UPS, how to start the UPS, manual bat-

tery test, manual bypass, shutting down the UPS and disconnecting the utility power from the UPS.

Before starting the UPS, perform these checks:
___ 1. Check that the input plugs and loads are connected properly and reliably.
___ 2. Check that the battery cable is connected properly.
___ 3. Check that the communication cables are connected properly.

1. Verify that the Input/Output circuit breakers are off.
2. During initial system checks, disconnect all loads (open load disconnects). 
3. Inspect all wiring, cables and connection.
4. If external battery cabinets are used, verify that the battery interconnect cables are fully inserted 

in the sockets.

5. Place the manual bypass breaker in BYPASS position.
6. Turn on the branch circuit disconnect to apply voltage to the input terminal block.
7. Using a voltmeter, verify the expected L1-N (L2) voltage. 

Verify that the same voltages appear at the Output terminals. The Bypass lamp by the switch will 

light.

8. After verifying proper input voltage to the UPS terminal block, turn off the branch circuit power, 

close all access panels to the distribution box and reapply input power.

9. Close the Input circuit breaker located on the distribution box. The green AC INPUT lamp should 

illuminate on the front panel.

10. Press the ON button and hold it for four seconds. After several seconds, the UPS ON lamp will 

turn on continuously. If the batteries are determined to be charged above 80%, an automatic 

battery test will run for about 15 seconds. 

11. Close the Output circuit breaker on the rear of the power distribution box. The light by the input 

breaker will illuminate.

12. Return the breaker to the Inverter position. The output terminal block will be powered at this 

time.

13. Connect all loads for normal operation.

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