UPS operations

Modes of operation

The UPS has two modes of operation:

•Operate mode (on page 20)

•Battery mode (on page 20)

Operate mode

In Operate mode:

•Power is available at the UPS receptacles.

•The UPS charges the batteries as necessary.

The UPS can be placed in Operate mode if either of the following conditions applies:

•The UPS is powered up.

•The UPS is powered down and no utility power is available.

To place the UPS in Operate mode, press and hold the Power On/Standby button ("UPS front panel controls" on page 7) until the UPS acknowledges compliance with a short beep. The Power On, Load 1 and Load 2 LEDs ("UPS front panel LED indicators" on page 7) illuminate, indicating that power is available at the UPS output receptacles.

Battery mode

In Battery mode, the UPS supplies power without being connected to utility power.

To power up the UPS without using utility power, press and hold the Power On/Standby button ("UPS front panel controls" on page 7) for two seconds.

Initiating a self-test

To initiate a self-test, press and hold the Test/Alarm Reset button ("UPS front panel controls" on page 7) for three seconds.

Because a portion of the self-test requires battery power, the self-test cannot be initiated if the batteries are less than 90 percent charged. If the UPS detects a problem, the appropriate LED ("UPS front panel LED indicators" on page 7) illuminates and an audible alarm may sound.

For information on what to do if the self-test detects a problem, see "Troubleshooting (on page 31)."

Silencing an audible alarm

To silence an alarm, press the Test/Alarm Reset button ("UPS front panel controls" on page 7).

UPS operations 20