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UPS operations
In this section
Initiating a self-test .................................................................................................................................. 35
Silencing an audible alarm...................................................................................................................... 35
Setting the power sensitivity adjustment dial .............................................................................................. 35
Powering down the UPS.......................................................................................................................... 36
Initiating a self-test
A self-test can be performed with equipment connected to the UPS output receptacles. To initiate a self-test,
press and hold the Mute/Test button until the alarm beeps two times.
CAUTION: Do not unplug the UPS to test the batteries. This action removes safe electrical grounding and
can introduce a damaging surge into the network connections.
The self-test lasts approximately 10 seconds as the UPS switches to battery power to test the load capacity
and battery charge. During the self-test, the Power LED flashes, the Output Load Level LED illuminates, and
the Battery Charge LED illuminates.
Silencing an audible alarm
Press the Mute/Test button.
IMPORTANT:
Although the audible alarm silences, the condition that caused the alarm to sound might still exist.
If a utility power failure caused the alarm (the Power LED is flashing green), the alarm silences after
power is restored.
Audible alarm conditions
Alarm type
Normal
UPS on battery
Shutdown imminent
Battery problem
Overload
Setting the power sensitivity adjustment dial
The power sensitivity adjustment dial is normally set in the counter-clockwise position, enabling the UPS to
provide maximum protection against waveform distortions in the AC input. When distortion occurs, the
Condition
UPS operating from utility power
UPS operating on battery power
Batteries nearly out of power
Batteries must be recharged
UPS power capacity exceeded
Audible alarm
No audible alarm
On–four short beeps
On–continuous
On–intermittent beeps
On–continuous
Can alarm be
silenced?
N/A
Yes
Yes
Yes
Yes
UPS operations 35
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