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Features
Model AVRX550UA shown. Features on AVRX750UA are the same.
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ON/OFF/TEST BUTTON
• To Turn the UPS ON: Press and hold the ON/OFF/TEST Button for one second.* If utility power is absent, pressing the
button will “cold-start” the UPS, i.e. turn it on and supply power from its batteries.**
• To Turn the UPS OFF: Press and hold the ON/OFF/TEST switch for one second.* The UPS will turn off (deactivate)
completely.
• To Run a Self-Test: With your UPS plugged in and turned ON, press and hold the ON/OFF/TEST button for three seconds.
CAUTION!
To perform a self-test, you must hold the ON/OFF/TEST button continuously for three seconds. If you release the
button too early, you will turn the UPS system OFF and cut power to connected equipment loads. To ensure you hold the
button for the correct length of time, do not release the button until you hear the UPS system’s audible alarm beep twice.
The first beep occurs after one second and indicates that the UPS will turn OFF if the button is released. The second beep
occurs after three seconds and indicates that the UPS will perform a self-test if the button is released.
The test will last approximately 10 seconds as the UPS switches to battery to test its load capacity and charge. All LEDs
will be lit and the UPS alarm will sound. See LED descriptions below to determine the results of the self-test.
Note:
You can leave connected equipment on during a self-test.
CAUTION!
Do not unplug your UPS to test its batteries. This will remove safe electrical grounding and may introduce a
damaging surge into your network connections.
*The alarm will beep once briefly after one second has passed. **If fully charged.
B
“ON/OFF” LED
This green LED lights continuously to indicate that the UPS is ON and supplying your equipment with AC power either from
a utility source or from the UPS’s internal batteries. If the UPS’s alarm is sounding (4 short beeps followed by a pause),
the UPS is operating from its internal batteries.
