APC 750 user manual On Battery Operation

Replace Battery

Battery

Disconnected

Automatic Self-Test

Manual Self-Test

Failure of a battery self-test causes the UPS to emit short beeps for one minute and the replace battery LED illuminates. Refer to Trouble- shooting in this manual.

The replace battery LED flashes and short beep is emitted every two seconds to indicate the battery is disconnected.

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.

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 turn off the computer before the UPS fully discharges the battery.

DETERMINING ON BATTERY RUN TIME

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.

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