Operation
4.6Return from Maintenance Bypass
1.Ensure all switches and circuit breakers upstream of the UPS are closed.
2.Ensure that both input circuit breakers are in the On position.
3.Turn the Maintenance breaker from BYPASS to UPS and replace the cover. The load now is supplied via electronic bypass.
4.Press the Menu button, select Control and press the Enter key 
.
5.Select Turn UPS On/Off and press the Enter key 
. The LCD displays Turn UPS to ONLINE.
6.Press the Enter key 
to switch on the inverter.
The UPS is now in online operation.
4.7Maintenance Breaker, Off Position
•Move the breaker to the Off position to transfer the load from the UPS to utility.
! WARNING
The output breaker on this unit does not protect every output configuration. Power to the load could be supplied immediately when the output is enabled. (Figure 9 illustrates the location of the output breaker in the output configuration.)
4.8Self-Tests
4.8.1Lamp Test
NOTE
This test involves putting the Liebert®
1.With the Liebert
2.Select Turn UPS On/Off and press OK.
3.The LCD will show Turn UPS to BYPASS.
4.Press OK to off the inverter to Bypass mode.
5.A single acoustic signal confirms the operation.
6.Select Turn UPS On/Off and press OK to place the UPS back in Normal Mode operation. The UPS performs the test during
4.8.2Battery Test
NOTE
During the test an acoustic signal will be heard as though the device is operating in battery mode.
1.Press the Menu button.
2.Select SETUP and press OK.
3.Select BATT TEST and press OK.
A single acoustic signal confirms the operation and the load will be supplied by the battery.
If the test is successful, the BATT LED will stop flashing and the UPS will return to Line mode. If the UPS circuitry detects a battery malfunction, Liebert
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