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W Zone Bcovers the exhaustpipe andpylon area which contains the10thand14th stagebleedairducting. No fire extinguishingprotection is providedforthis zone. Engine fire detection is providedbydualheat sensitive detection loops(designated loopAandB) arrangedin parallel aroundtheengine, exhaustpipe andpylon areas. Eachloopis connectedto the controlunitandis monitored continuouslyforfire or overheat conditions. In normaloperation,bothdetection loops mustdetect afire or overheat condition before afire warningis generated. Controlunitloopdetection is controlledthroughLH/RH, ENGandJET switches onthe FIREDETECTIONpanel. The switchis usedto selectA,BOTH orBloopdetection. Ifoneloopdetects afire, whenbothloops are selected,this is considered aFalse Fire and aL/RFIREFAIL caution message willbe displayed on the EICASprimarypage. During normaloperations withbothloops selected,thetables in this section liststhe indications thatare displayedif a fire,failure, or powerloss is detected: Flight Crew Operating Manual MASTER CSP A- 013 Vol. 1 PILOT’S CO- LHS ENGINE CONTROLUNIT RHS ENGINE Engine Fire/Overheat Detection System ---Schematic Flight Crew Operating Manual FIRE PROTECTION Vol. 1 10- Fire Detection and Extinguishing (FIDEEX) REV 56, Jan 31/03 JET LH, RH Toggle Switches
TEST -
NORM - TEST Toggle Switch (spring loaded tocenter) WARN --Simulates afire or overheat condition onthe engines withthefollowing indications: Firebell rings, ”JETPIPE
LH(RH) ENG FIRE PUSH, BOTTLE1 and2ARMED PUSHTO DISCH switch/lights come on. FAIL --Simulates a short on the selected loops (Aor B) with the following indications: 中国公务机网 www.gongwuji.com 公务机翻译 www.aviation.cn 本文链接地址:庞巴迪CRJ200公务机机组操作手册 Bombardier CRJ-防火(3) |