CREW AUTOMATIC FIRE EXTINGUISHING SYSTEM (AFES)
COMPONENTS - Continued
STANDARD CONTROL ELECTRONIC AMPLIFIER (SCEA)
Processes input signals from OFSA units when hydrocarbon fuel fire is detected.
If the fire is large, the S(XA lights the FIRE AMRM lamp on the crew compadment
T/A panel and activates the two fire extinguishers on vehicles 1 thru 344 (three fire
extinguishers on vehicles 345 and above).
If the large fire continues, or a second large fire occurs, the SCEA activates the re-
maining crew compartment fire extinguishers.
If the OFSAdetects a small fuel fire, the SCEA signals the T/A panel, and the red FIRE
ALARM lamp on the T/A panel flickers. The crew uses a portable fire extinguisher or
activates the red guarded MANUAL ELECTRIC DISCHARGE toggle switch on the T/A
panel to put out the small fire.
The SCEA contains BITE which internally tests the unit for normal operation.
A LED on the T/A panel lights to indicate a fault in the SCEA unit.