3Com Powerware Uninterruptible Power System Prestige Series - Manual (Page 56)

UPS Operation
50 Powerware ® Prestige Series Installation and Operator’s Manual for IBM Applications (3000 VA) Uncontrolled Copy
When shutdown is imminent, the Self Test indicator flashes. These
warnings are approximate, and the actual time to shutdown may vary
significantly. For approximate battery times see the table on page 4.
Once these warnings are indicated, immediately complete and save your
work to prevent data loss and similar difficulties. When utility power is
restored after the UPS shuts down, the UPS automatically connects to
the load when the startup is complete.
Diagnostics
The UPS periodically performs diagnostic tests while the unit is
operating in Normal mode, ensuring proper operation. These tests
include:
: Self Test
: Utility Verification Test
: Battery Discharge Test
: Over Temperature Test
The UPS also runs a series of over 20 internal tests when power is first
applied. If a diagnostic test fails, see Chapter 7, “Troubleshooting” on
page 71.
Battery Test on Demand
You can perform a battery test on the UPS while it is operating in
Normal mode by pressing the Output On button. The UPS
automatically distributes some of the load to the batteries for 30 seconds
and tests the battery’s performance.
Battery Start
NOTE Before using this feature, the UPS must have been powered by utility power at
least once.
This feature allows you to start the UPS without utility power. After
utility power has been unavailable for one minute, press and hold the
Output On button until the alarm beeps.