CONTROLS AND INDICATORS

ON/OFF/Alarm Silence Button

This button controls output power to the connected load and has three functions:

• ON

 

• OFF

 

• Alarm Silence

ON/OFF/Alarm Silence

ON When the UPS is off, pressing the main ON/OFF button for more than two seconds will start the UPS, and an audible alarm sounds briefly. The UPS is capable of starting on bat- tery (battery start).

OFF When the UPS is on (in either Normal or Battery mode), pressing the main ON/OFF button for more than

two (2) seconds will shut down the UPS. An audible alarm sounds briefly.

Alarm When a UPS audible alarm is active, pressing and releasing Silence the main ON/OFF button will silence the active audible

alarm, whether utility power is present or not. Once the alarm silence function has been activated, all active audible alarms—except for low battery or overload conditions—will remain silenced until a new alarm condition is detected.

NOTE

Do not hold ON/OFF button down for more than 2 seconds or the UPS will shut down.

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Liebert 350-500 VA user manual ON/OFF/Alarm Silence Button, Controls and Indicators