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5. Operation
5.1.11 Test pushbutton: Once the UPS is energized, pressing the button will
initiate a battery test. This will force the UPS to operate on-battery for a brief time
during which the UPS determines the strength of the battery. In the event the
batteries are too weak to support the load during the test, the UPS will immediately
return to on-line operation.
5.1.12 Replace Battery indicator: Illumination of the Replace Battery indicator and
emits
“
chirps
”
occasionally means that the automatic battery test has found that the
battery is weak and requires replacement. The indicator is extinguished following a
successful battery test.
5.1.13 Output power & line voltage bar graph: The output power bar graph displays the
power drawn from the UPS as a percentage of the UPS
’
s full rated capacity.
5.1.14 Over load indicator: If the UPS becomes overloaded, the overload
indicator will illuminate and the UPS will sound an alarm.
5.2 Battery capacity bar graph
The battery capacity bar graph continuously displays the state of battery charge. In
the above example, the display shows that 75% of rated battery capacity is available.
Where power quality is fair, the UPS will be able to maintain the battery at 100%of
rated capacity. In the event of an extended utility failure, the capacity shown will
decrease at a rate dependent on the load drawn from the UPS. Large computer loads
will cause the battery capacity indication to fall at a faster rate. When low battery
conditions are reached, the bottom-most bar will illuminate, and the UPS emits a short
beeps every 1 seconds.
TEST
Batt. Level
Battery capacity bar graph
100%
75%
50%
25%