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A01-00055 Rev N
4.0 OPERATION
On/Off Button
The On/Off button is a dual function control:
• When the UPM is off and AC power is present to the UPM input,
pressing the On/Off button for more than 2 seconds will turn the
UPM output on.
• If battery is connected, pressing the On/Off switch for 2 seconds
or more will “cold-start” the UPM on its internal battery with no
incoming AC present.
• When the UPM is on, pressing the On/Off button for more than 2
seconds will turn off the UPM output power.
Test/Silence Button
The Test/Silence button is a dual function control:
• Pressing the Test/Silence button when AC power is present and
the UPM is operating causes the UPM to enter a self test mode in
which it tests both battery and inverter for a few seconds before
returning to the AC supply. We recommend you close all open les
before initiating self-test.
• When AC power fails, the UPM warns you with an audible alarm.
The Test/Silence button is used to silence the alarm. When battery
power begins to run low, the audible alarm will automatically return
and beep at a faster rate.
Load Monitor
The Load Monitor is a six-segment LED display that shows the current
load percentage. The rst 5 LED’s each indicate approximately 20%
load, with the 6th red LED showing the UPM is overloaded.
Battery Charge Monitor
The Battery Charge Monitor is a ve-segment LED display that shows
the charge capacity of the internal battery from zero to 100%. Each LED
indicates approximately 20% of full charge.
Site Wiring Fault Indicator – (120 VAC models only)
The SF symbol will be displayed on the front panel of the UPM if it is
connected to an improperly wired AC receptacle. This is to indicate a
missing safety ground wire or a reversal in phase and neutral wiring. If
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