3Com Powerware Uninterruptible Power System Prestige Series - Manual (Page 57)

UPS Operation
51 Powerware ® Prestige Series Installation and Operator’s Manual for IBM Applications (3000 VA) Uncontrolled Copy
The UPS supplies power to your equipment and goes into Battery mode.
The
indicator remains lit and the front panel displays the percentage
of battery capacity remaining to the UPS. This process should take about
15 seconds.
UPS Shutdown
Performing a UPS shutdown turns off the power to your protected
equipment. Confirm the equipment is prepared for a power-off before
shutting down the UPS.
NOTE Do not perform a UPS shutdown if you want to use the Maintenance Bypass
feature on the PPDM (see “Using the PPDM” on page 53).
To perform a UPS shutdown:
1. Press and hold the Output Off button until the long beep
ceases (approximately three seconds).
The

indicator remains lit indicating Normal mode, load
offline.
2. Unplug the UPS.
The UPS enters Battery mode for several seconds. The

indicator turns off and the UPS shuts down.
3. 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. Follow the instructions in “UPS with PPDM Startup” on
page 42.