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5.3 Self-test
Use the self-test to verify both the operation of the UPS and the condition of the battery. With the
UPS plugged in to normal utility power, activate the self-test by pressing the on/test button until
the UPS beeps and the on-line LED flashes.
Note: By default the UPS performs a self-test at power up and once every two weeks.
During the self-test, the UPS briefly operates the loads on-battery (the on-battery LED comes on).
If the UPS passes the self-test, it returns to on-line operation. The on-battery LED goes off and the
on-line LED goes on steady.
If the UPS fails the self-test it immediately returns to on-line operation and lights the replace bat-
tery LED. The loads are not affected. Recharge the battery overnight and perform the self-test
again. If the replace battery LED is still on, see section 10 for information on replacing the battery.
5.4 Load Bar Graph
The 5-LED display on the left of the front panel 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 all five LEDs light, thoroughly test your complete system to make sure that the UPS will not be-
come overloaded.
If the UPS is overloaded, the overload LED lights and an alarm sounds. See section 6.2.