Alpha Technologies CFR 600, CFR 600XT, CFR 1000 - Manual (Page 30)

24
4.2 Using the Standard Interface Device, continued
Low Battery Warning
The red “LOW BATTERY WARNING” LED precedes “LOW BATTERY
SHUTDOWN” by 2 to 5 minutes and indicates that the batteries can no longer
support the load. Immediate steps should be taken to begin an orderly system
shutdown. From LOW BATTERY WARNING, it may take several hours to
fully recharge the batteries.
Low Battery Shutdown
The “LOW BATTERY SHUTDOWN” LED indicates that the UPS has
shut itself down to prevent over-discharge damage to the batteries. In critical
applications, an additional power source (such as a generator) should be used
until utility line power returns.
Test
The yellow “TEST” LED indicates that the UPS is simulating a LINE
FAILURE to self-test the backup capabilities of the unit. If, during the one
minute test, the UPS fails to supply backup power, it resumes LINE
PRESENT operation without interruption to the load and lights the “SERVICE”
LED.
Service
The “SERVICE” LED indicates that the UPS is no longer able to provide
backup power to the load and that service is required. Consult the manual's
troubleshooting section or contact your authorized Alpha service center.
4. OPERATION