EQUIPMENT COOLING SMOKE DETECTION

 EQUIPMENT COOLING SMOKE DETECTION

The supply system and the exhaust system have a smoke detector. The detectors monitor for smoke. Relays give the logic that controls the operation of the smoke detection system.   

   If smoke is detected, the detector sends an alarm signal for these:   

   Indication in the flight compartment    

   Operation of the automatic reconfiguration for the smoke clearance mode    

   Configuration of the purge mode for the supply system.    

   Smoke clearance mode operation has an interface with these operations in the air conditioning system:   

   Flow control and shutoff valve    

   Recirculation fans    

   Equipment cooling fans    

   Overboard exhaust valve.    

   See the air conditioning chapter for more information about those operations (CHAPTER 21).   

   A test panel on the J23 junction box in the EE compartment lets you do a test of the smoke detectors and system operation.