S3K Series Instruction Manual • 9
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5.0 Operation
5.1 Switch on
Press the ON button for at least 0.5 seconds.
Note:
If normal utility power is not present, the UPS may be engaged by
depressing the ON button for at least 3 seconds. The load will be powered from
the internal batteries until the discharge point is reached.
5.2 Switch off
Hold the OFF button until the ON-LINE or ON BATTERY LEDs are no longer
illuminated.
5.3 Silence
When the UPS is in backup mode, press the ON button for at least 1 second to
silence the audible alarm. (This function is disabled when the UPS status is either
LOW BATTERY or OVERLOAD.)
Note:
In backup mode, the UPS will automatically turn off if the connected loads
are not operating.
5.4 Self-test
Use the self-test function to verify both the operation of the UPS and the condi-
tion of the batteries.
With normal utility power, push the ON/TEST button for at least 1 second. During
the self-test, the UPS operates in backup mode (green LED is illuminated). If the
UPS passes the self-test, it returns to line-interactive mode. (The ON BATTERY
LED goes off and the ON-LINE LED goes on steadily.)
If the UPS has failed to pass the self-test, it returns to line-interactive mode
and the REPLACE BATTERY LED illuminates. (The loads are not affected.)
Recharge the batteries overnight and perform the self-test again. If the
REPLACE BATTERY LED is still on, contact your local SolaHD distributor for a
replacement.
Note:
When replacing the internal batteries (12 V/7 Ah), disconnect utility power
before opening the case. Take note of the polarity before installing the new
batteries to avoid a short circuit.
5.5 Load Power Bar Graph
The 5-LED display shows the power drawn from the UPS by the load. The
display indicates the percentage of the UPS’s rated capacity. For example: If
three LEDs are lit, the load is drawing between 50% and 67% of the UPS’s
capacity. If the UPS is overloaded, the overload LED illuminates and the alarm
sounds.