UPS + Isolation Transformer User Manual
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13
Load Monitor
The Load Monitor is a six-segment LED display that shows the current load
percentage. The first 5 LED
’
s each indicate approximately 20% load, with the
6th red LED showing the UPS is overloaded.
Battery Charge Monitor
The Battery Charge Monitor is a five-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 UPS 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 the
“SF”
is displayed on the front panel you should contact a
qualified electrician
immediately.
NOTE:
Do not operate the UPS if the Site Wiring Fault LED is illuminated. When lit, the LED
is indicating a wiring condition, which may represent a hazard of fire or
electrocution. In addition, improper wiring may create reliability problems for both
the UPS and the connected system. Never use a 3-blade to 2-blade adapter (often
called a “cheater”) to
power UPS. These devices remove the safety ground connection
to the UPS and will cause the Site Wiring Fault LED to illuminate.
