To warn you that the unit will soon shut down, the UPS will sound this alarm 2 minutes before the actual shutdown. In order to protect the unit's batteries from discharging too much, the UPS will shut down and turn off its output. The UPS can only operate on battery for a limited amount of time. The Battery Power Supplied outlets are now battery-powered.Ģ.) The Back-UPS product has entered a low battery condition - This alarm indicates that the UPS has reached a Low Battery condition and will soon shut down. Please refer to your Back-UPS user manual for the complete list of audible tones.ġ.) The Back-UPS product is operating on battery power - This alarm indicates that the UPS has transferred from On Line operation to On Battery operation.
Below is a partial list of audible indicators and possible meanings. This means that the UPS is protecting the load. An occasional single beep from the UPS is normal UPS operations. Therefore, in order to provide proactive warnings of changing UPS and power conditions to users, APC's UPSs have audible tones. UPSs are generally installed and placed in places not easily seen by a user (i.e., under a desk, in a wiring closet, etc).
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