HP T2200 - Manual (Page 30)

UPS operations 30
UPS operations
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 Condition Audible alarm Can alarm be
silenced?
Normal UPS operating from utility power No audible alarm N/A
UPS on battery UPS operating on battery power On–four short beeps Yes
Shutdown imminent Batteries nearly out of power On–continuous Yes
Battery problem Batteries must be recharged On–intermittent beeps Yes
Overload UPS power capacity exceeded On–continuous Yes
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
UPS provides sine wave power from the battery reserves for as long as the distortion is present. In areas
with poor utility power or where the UPS input power comes from a backup generator, continuous
waveform distortion causes the UPS to switch to battery power. To minimize battery use, experiment with