APC 600 user manual Audible alarms, On-battery alarm, Low battery, Replace battery, Overload

5.0 Operation

5.4 Audible alarms

The UPS features an audible alarm that beeps to indicate certain conditions (see Secs. 5.4.1–5.4.4).

5.4.1 On-battery alarm

The UPS emits four short beeps every 30 seconds when the UPS is operat- ing on battery power. You may silence this alarm by pressing the alarm disable button (see Sec. 5.1.9). The on-battery alarm is reset when on-line operation is resumed.

5.4.2 Low battery

The UPS beeps steadily to indicate that less than 2 minutes of power remains before shutdown from battery exhaustion (or 5 minutes; see Sec. 5.5.4).

5.4.3 Replace battery

The UPS emits short beeps for 1 minute if the UPS’s batteries fail the self- test. If the UPS is left operating in this condition, the UPS emits short beeps once every 5 hours until a successful battery test is completed.

5.4.4 Overload

The UPS emits a loud, sustained tone when overloaded. When the load exceeds the UPS’s rating during on-line operation, the alarm sounds until the overload is removed. If the overload occurs during on-battery opera- tion, the alarm sounds until the UPS Enable switch on the rear panel is turned off.

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