American Power Conversion 5000 VA - Manual (Page 9)

7
Feature Function
Cold Start
When there is no utility power and the UPS is off, press and hold the button to
power up the UPS and connected equipment.
The UPS will emit two beeps. During the second beep, release the button.
Self-Test Automatic: 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.
Manual: Press and hold the button for a few seconds to initiate the self-test.
Diagnostic Utility Voltage
The UPS has a diagnostic feature that displays the utility voltage. Plug
the UPS into the normal utility power.
The UPS starts a self-test as part of this procedure. The self-test
does not affect the voltage display.
Press and hold the button to view the utility voltage bar graph
display. The five-LED, Battery Charge display on the right of the
front panel shows the utility input voltage.
Refer to the figure at left for the voltage reading (values are not listed
on the UPS).
The display indicates the voltage is between the displayed value on the
list and the next higher value.