American Power Conversion 750VA - Manual (Page 9)

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AVR Trim
This LED illuminates to indicate the UPS is compensating for a high
utility voltage.
AVR Boost
This LED illuminates to indicate the UPS is compensating for a low
utility voltage.
On Battery When the on battery power LED is lit the UPS is supplying battery
power to the connected equipment. When on battery, the UPS sounds
an alarm—four beeps every 30 seconds.
Overload The LED illuminates and the UPS emits a sustained alarm tone when
an overload condition occurs.
Replace Battery Failure of a battery self-test causes the UPS to emit short beeps for one
minute and the replace battery LED illuminates. Refer to
Troubleshooting in this manual.
Battery
Disconnected
The replace battery LED flashes and short beep is emitted every two
seconds to indicate the battery is disconnected.
Automatic Self-Test The UPS performs a self-test automatically when turned on, and every
two weeks thereafter (by default).
During the self-test, the UPS briefly operates the connected equipment
on battery.
If the UPS fails the self-test, the replace battery LED lights and
immediately returns to online operation. The connected equipment is
not affected by a failed test. Recharge the battery for 24 hours and per-
form another self-test. If it fails, the battery must be replaced.
Manual Self-Test Press and hold the button for a few seconds to initiate the self-test.
On Battery Operation
The Smart-UPS switches to battery operation automatically if the utility power fails. While running
on battery, an alarm beeps four times every 30 seconds.
Press the button (front panel) to silence the UPS alarm (for the current alarm only). If the utility
power does not return, the UPS continues to supply power to the connected equipment until the bat-
tery is exhausted.
If PowerChute is not being used you must manually save your files and power down before the UPS
turns off.
D ETERMINING O N B ATTERY R UN T IME
UPS battery life differs based on usage and environment. It is recommended that the battery/batteries
be changed once every three years. See the APC web site,
www.apc.com , for on battery run times.