Alpha Technologies CFR 3000, CFR 3000RM - Manual (Page 39)

33 3 Operation
Low Battery Shutdown
This red LED turns on when the battery voltage is 12% below nominal. The unit automati-
cally shuts itself down and no longer provides power to the loads to prevent
overdischarge damage to the batteries.
Test
This yellow LED shows the unit is in self test mode (Section 3.3). If it fails the test, the
Service LED is on and the unit defaults to Line Present operation. You should do trouble-
shooting as shown in Sections 3.4 or 5.2.
TIP: At start-up, this LED flashes for about 5 to 15 seconds.
Line Synchronization
If both the:
• Line Power
• Line Failure
LEDs are on, the unit is synchronizing its output with the input before starting Line
Present operation. This takes about 15 seconds.
Push Buttons
Alarm Off
This turns off most audible alarms. The alarm is off until another alarm occurs.
TIP: Some alarms, such as Line Failure, cannot be turned off and will continue to sound
every 20 seconds. If the Service LED is on, press and hold down the Alarm Off switch
and note which Output Load LEDs turns on or flashes (Section 3.4).
Manual Start
This starts the unit with battery power when line power is absent or unqualified.
It can also be used as a self test. If the Line Present LED is on, press it for 5 seconds.
This tests the inverter and batteries for one minute by providing backup battery power to
the loads, returning to line present mode when done.
3.5 Controlling the Unit with the Standard Interface Device (SID) (Continued)