UPS Operation
UPS Shutdown
Performing a UPS shutdown turns off the power to your protected equipment. Confirm the equipment is prepared for a
NOTE Do not perform a UPS shutdown if you want to use the Maintenance Bypass feature on the optional PPDM (see “Using the PPDM” on page 54).
To perform a UPS shutdown:
1.Press and hold the Output 
Off button until the long beep ceases (approximately three seconds).
The µindicator remains lit indicating Normal mode, load offline.
2.Switch the input breaker on the power processing unit to the OFF (O) position.
The UPS enters Battery mode for several seconds. The µindicator turns off and the UPS shuts down.
3.Unplug or remove utility power from the UPS.
4.When all LEDs are no longer illuminated on the UPS, switch the circuit breaker to the OFF (O) position on each battery cabinet.
Changing the Output Voltage
To change the operating voltage of the UPS:
1.Perform a UPS shutdown as described in the previous section.
2.Select the new voltage (see Step 7 on page 27). If you have a PPDM, see Step 4 on page 41.
3.Restart the UPS by performing a UPS startup as described on page 36. If you have a PPDM, see page 47.
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