CL_604-FIRE_PROTECTION庞巴迪挑战者防火
<P>CL_604-FIRE_PROTECTION</P><P> </P>
<P>**** Hidden Message *****</P> Table of Contents<BR>For Training Purposes Only<BR>May 03<BR>9-i<BR>P I LOT T R A I N I N G GU I D E FIRE PROTECTION<BR>Introduction .........................................................................................................................9-1<BR>Engine Fire/Overheat Protection.........................................................................................9-2<BR>Description ....................................................................................................................9-2<BR>Components and Operation..........................................................................................9-2<BR>Heat-Sensing Elements ..........................................................................................9-2<BR>Fire Detection Control Units ....................................................................................9-4<BR>Engine Fire Extinguisher Bottles .............................................................................9-4<BR>LH (RH) ENG FIRE PUSH Switch/Lights................................................................9-6<BR>BOTTLE 1 (2) ARMED PUSH TO DISCH Switch/Lights ........................................9-6<BR>Miscellaneous Test Panel .......................................................................................9-6<BR>Auxiliary Power Unit Fire Protection ...................................................................................9-8<BR>Description ....................................................................................................................9-8<BR>Components and Operation..........................................................................................9-8<BR>Heat-Sensing Element ............................................................................................9-8<BR>Fire Detection Control Unit......................................................................................9-9<BR>APU Fire Extinguishing Bottle .................................................................................9-9<BR>APU FIRE PUSH Switch/Light .............................................................................. 9-10<BR>APU BOTTLE ARMED PUSH TO DISCH Switch/Light ........................................ 9-10<BR>Miscellaneous Test Panel ..................................................................................... 9-10<BR>Baggage Compartment Fire Protection ............................................................................ 9-11<BR>Description .................................................................................................................. 9-11<BR>Components and Operation........................................................................................ 9-11<BR>Smoke Detector .................................................................................................... 9-11<BR>Smoke Detector Test ............................................................................................ 9-11<BR>Lavatory Fire Protection.................................................................................................... 9-12<BR>Description .................................................................................................................. 9-12<BR>Components and Operation........................................................................................ 9-12<BR>Smoke Detector .................................................................................................... 9-12<BR>Automatic Fire Extinguisher .................................................................................. 9-12<BR>Galley Overheat Protection (Optional) .............................................................................. 9-13<BR>Description .................................................................................................................. 9-13<BR>Components and Operation........................................................................................ 9-13<BR>Galley Overheat Detector...................................................................................... 9-13<BR>Portable Fire Extinguishers............................................................................................... 9-14<BR>Description .................................................................................................................. 9-14<BR>Components and Operation........................................................................................ 9-14<BR>Flight Compartment Fire Extinguisher................................................................... 9-14<BR>Cabin Fire Extinguisher......................................................................................... 9-14<BR>FIRE PROTECTION<BR>9-ii For Training Purposes Only<BR>May 03<BR>P I LOT T R A I N I N G GU I D E<BR>Main Landing Gear Bay Overheat Detection System ....................................................... 9-15<BR>Description .................................................................................................................. 9-15<BR>Components and Operation........................................................................................ 9-15<BR>Heat-Sensing Element .......................................................................................... 9-15<BR>Overheat Detection Control Unit ........................................................................... 9-16<BR>MLG BAY Overheat Test ...................................................................................... 9-16<BR>Controls and Indicators ..................................................................................................... 9-17<BR>General ....................................................................................................................... 9-17<BR>Engine and APU Fire/Overheat Protection ................................................................. 9-17<BR>Fire Detection and FIREX Monitor Test ...................................................................... 9-18<BR>MLG Bay Overheat Test ............................................................................................. 9-18<BR>Baggage Smoke Detector Test................................................................................... 9-19<BR>EICAS Messages........................................................................................................ 9-20<BR>List of Figures<BR>Graphic Title Figure<BR>For Training Purposes Only<BR>May 03<BR>9-iii<BR>P I LOT T R A I N I N G GU I D E FIRE PROTECTION<BR>Engine Fire Detection .........................................................................................................9-1<BR>Jet Pipe / Pylon Overheat Sensing Element .......................................................................9-2<BR>Engine and APU Fire Extinguishing System.......................................................................9-3<BR>Glareshield Panels..............................................................................................................9-4<BR>Miscellaneous Test Panel ...................................................................................................9-5<BR>APU Fire Detection .............................................................................................................9-6<BR>Copilot’s Glareshield Panel.................................................................................................9-7<BR>Smoke Detector Test Button...............................................................................................9-8<BR>Main Landing Gear Bay Overheat Heat-Sensing Element .................................................9-9<BR>LDG GEAR CONTROL Panel........................................................................................... 9-10<BR>Glareshield Panels............................................................................................................9-11<BR>Miscellaneous Test Panel ................................................................................................. 9-12<BR>Landing Gear Control Panel ............................................................................................. 9-13<BR>Annunciator Panel.............................................................................................................9-14<BR>9-iv For Training Purposes Only<BR>May 03<BR>FIRE PROTECTION P I LOT T R A I N I N G GU I D E<BR>Page Intentionally Left Blank<BR>FIRE PROTECTION<BR>For Training Purposes Only<BR>May 03<BR>9-1<BR>P I LOT T R A I N I N G GU I D E<BR>CHAPTER 9: FIRE PROTECTION Introduction<BR>The fire protection system is divided into two separate subsystems:<BR>• Fire and overheat detection system<BR>• Fire extinguishing system<BR>The fire and overheat detection system includes components which detect fire,<BR>overheat, or smoke conditions. Fire and overheat detection is provided in the<BR>following areas:<BR>• engines<BR>• jet pipe and pylons<BR>• APU<BR>• main landing gear<BR>Smoke detection is provided in the baggage compartment and the lavatory. Provisions<BR>are also made for an optional galley overheat detection system.<BR>The fire extinguishing system delivers an extinguishing agent to protected areas of the<BR>aircraft; zone A of the engines and the APU enclosure.<BR>The detection and extinguishing systems can be tested and monitored from the<BR>cockpit.<BR>Portable fire extinguishers are provided in the cockpit and cabin.<BR>FIRE PROTECTION<BR>9-2 For Training Purposes Only<BR>May 03<BR>P I LOT T R A I N I N G GU I D E<BR>Engine Fire/Overheat Protection<BR>Description<BR>The engine fire and overheat protection system detects fire and/or overheat conditions<BR>in the nacelle, jet pipe, and pylon areas of the engine. The engine fire and overheat<BR>protection system is divided in two zones, Zone A and Zone B:<BR>• Zone A includes the combustion area of the engine. Overheat/fire detection and<BR>extinguishing is provided<BR>• Zone B consists of the jet pipe and pylon area. Only overheat/fire detection is<BR>provided for this zone<BR>Each zone produces a distinctive aural and visual warning when an overheat and/or<BR>fire condition is detected.<BR>The extinguishing system consists of two fire extinguisher bottles. Either or both<BR>bottles can be discharged into the zone A area of the engines.<BR>Components and Operation<BR>Heat-Sensing Elements<BR>Each zone of the engine is protected by a single continuous heat-sensing element<BR>(loop) connected to its respective fire detection control unit. Each sensing element is a<BR>coaxial cable which has an inner conductor surrounded by an insulator material. The<BR>resistance of the insulating material decreases with an increase in temperature. The<BR>outer metal sheathing is permanently grounded. The loop resistance information is fed<BR>to the corresponding fire detection control unit.<BR>The Zone A sensing element is used to detect an overheat/fire condition in the<BR>combustion area of the engine.<BR>The Zone B sensing element is used to detect an overheat/fire condition in the area<BR>where electrical harnesses and plumbing go through the engine pylon. In addition, this<BR>sensing element is used to detect an overheat condition in the exhaust nozzle area of<BR>the engine.<BR>FIRE PROTECTION<BR>For Training Purposes Only<BR>May 03<BR>9-3<BR>P I LOT T R A I N I N G GU I D E<BR>Engine Fire Detection<BR>Figure 9-1<BR>Jet Pipe / Pylon Overheat Sensing Element<BR>Figure 9-2<BR>* NOTE: Only ZONE A can receive Fire Extinguishant<BR>ZONE A<BR>P604_09_001<BR>Engine Fire Detection<BR>Sensing Elements<BR>(Zone A)<BR>Aft Mount Ring<BR>Fire Zone A<BR>(Engine Fire Detection)<BR>Fire Zone B<BR>(Engine Jet Pipe/<BR>Pylon Overheat)<BR>P604_09_004<BR>Pylon Sensing<BR>Element<BR>Engine Jet Pipe<BR>(Exhaust Nozzle)<BR>Sensing Element<BR>FIRE PROTECTION<BR>9-4 For Training Purposes Only<BR>Sept 04<BR>P I LOT T R A I N I N G GU I D E<BR>Fire Detection Control Units<BR>Each heat-sensing element has its own fire detection control unit which monitors the<BR>resistance of its loop. When the electrical resistance decreases to the warning trip<BR>point, the fire detection control unit prompts EICAS messages as well as aural and<BR>visual warnings to alert the flight crew of a fire and/or overheat condition.<BR>For Zone A, the fire warning signal causes the following aural and visual warnings to<BR>occur:<BR>• L (R) ENG FIRE warning EICAS message is displayed<BR>• MASTER WARNING switch/lights illuminate flashing<BR>• applicable red LH (RH) FIRE PUSH switch/light illuminates<BR>• fire bell sounds<BR>For Zone B, the fire warning signal causes the following aural and visual warnings to<BR>occur:<BR>• L (R) JETPIPE OVHT warning EICAS message is displayed<BR>• MASTER WARNING switch/lights illuminate flashing<BR>• “JETPIPE OVERHEAT” aural warning sounds<BR>The aural warnings can be silenced by pressing either MASTER WARNING switch/<BR>light. The EICAS warning message will remain displayed and ENG FIRE PUSH<BR>switch/light will remain illuminated until the fire/overheat condition is corrected.<BR>The fire detection control units can discriminate between a true fire/overheat and a<BR>short in the heat sensing element. In the event of fire detector loop failure, the<BR>applicable L(R) FIRE FAIL or L(R) JETPIPE OVHT FAIL caution EICAS message<BR>will be displayed.<BR>Engine Fire Extinguisher Bottles<BR>Two engine Firex bottles are installed in the aft equipment bay under the APU<BR>enclosure. The bottles are charged with Halon 1301 and pressurized with dry nitrogen<BR>(600 to 625 psi).<BR>Each bottle is equipped with a left and right squib (electrically actuated discharge<BR>cartridges), thermal discharge port, pressure gauge and a left and right discharge line.<BR>The discharge lines are interconnected to allow discharge of both bottles (if needed)<BR>into one engine. The selection of the LH or RH ENG FIRE PUSH switch/light will<BR>determine which squibs are fired.<BR>The thermal discharge port provides overpressure relief for each Firex bottle. Should<BR>the pressure in a Firex bottle exceed 1400 psi, the thermal discharge port will<BR>discharge the extinguishing agent in the immediate vicinity of the bottle.<BR>FIRE PROTECTION<BR>For Training Purposes Only<BR>Sept 04<BR>9-5<BR>P I LOT T R A I N I N G GU I D E<BR>Engine and APU Fire Extinguishing System<BR>Figure 9-3<BR>APU Firex<BR>Bottle<BR>Thermal<BR>Discharge<BR>Tube<BR>Pressure<BR>Switch<BR>Connection<BR>Discharge<BR>Port<BR>APU FIREX<BR>Discharge<BR>Tube<BR>APU FIREX<BR>Bottle<BR>1<BR>Bottle<BR>APU<BR>Enclosure<BR>VIEW LOOKING FORWARD<BR>P604_09_003<BR>2<BR>Bottle<BR>Left<BR>Engine<BR>Right<BR>Engine<BR>Squib<BR>(Dual Firing<BR>Elements)<BR>Gauge<BR>FIRE PROTECTION<BR>9-6 For Training Purposes Only<BR>May 03<BR>P I LOT T R A I N I N G GU I D E<BR>LH (RH) ENG FIRE PUSH Switch/Lights<BR>The engine fire extinguishing system is controlled by the LH (RH) ENG FIRE PUSH<BR>switch/lights.<BR>When the LH (RH) ENG FIRE PUSH switch/light is pressed, the following occurs:<BR>• the Firex bottle squibs are armed, both BOTTLE 1 (2) ARMED PUSH TO DISCH<BR>switch/lights illuminate<BR>• engine generator shuts down<BR>• fuel shutoff valve (SOV) closes<BR>• hydraulic shutoff valve (SOV) closes<BR>• bleed air shutoff valve (SOV) closes<BR>• associated engine igniters disabled<BR>BOTTLE 1 (2) ARMED PUSH TO DISCH Switch/Lights<BR>When an illuminated BOTTLE 1(2) ARMED PUSH TO DISCH switch/light is<BR>pressed, electrical current fires the squibs in the associated bottle and pressurized<BR>Halon is directed into the engine nacelle. The selection of the LH or RH ENG FIRE<BR>PUSH switch/light will determine which engine nacelle will receive the extinguishing<BR>agent.<BR>Glareshield Panels<BR>Figure 9-4<BR>Miscellaneous Test Panel<BR>The Engine Fire/Overheat Protection System may be tested from the Miscellaneous<BR>Test Panel located on the forward pedestal. The FIRE DET WARN/FAIL switch<BR>provides the means of testing the fire/overheat detection system by selectively<BR>simulating fire/overheat conditions and fail conditions.<BR>LH ENG<BR>FIRE<BR>PUSH<BR>GPWS<BR>TERR<BR>INHB<BR>MASTER<BR>WARNING BOTTLE 1<BR>ARMED<BR>PUSH TO<BR>DISCH<BR>STALL<BR>MASTER<BR>CAUTION<BR>PULL UP<BR>GND PROX<BR>ATS<BR>N2 SYNC<BR>ATS<BR>N1 TO<BR>FAIL<BR>ATS<BR>N1 TO<BR>FAIL<BR>APU<BR>FIRE<BR>PUSH<BR>RH ENG<BR>FIRE<BR>PUSH<BR>GPWS<BR>TERR<BR>INHB<BR>MASTER<BR>BOTTLE 2 WARNING<BR>ARMED<BR>PUSH TO<BR>DISCH<BR>BOTTLE<BR>ARMED<BR>PUSH TO<BR>DISCH<BR>STALL<BR>MASTER<BR>CAUTION<BR>PULL UP<BR>GND PROX<BR>LH ENG FIRE PUSH<BR>Switch/Light<BR>BOTTLE 1 ARMED<BR>PUSH TO DISCH<BR>Switch/Light<BR>RH ENG FIRE PUSH<BR>Switch/Light<BR>BOTTLE 2 ARMED<BR>PUSH TO DISCH<BR>Switch/Light<BR>P604_09_009<BR>FIRE PROTECTION<BR>For Training Purposes Only<BR>May 03<BR>9-7<BR>P I LOT T R A I N I N G GU I D E<BR>Selecting the switch to the WARN position verifies the continuity of all the sensing<BR>elements and bottle charge status. Selecting the switch to the FAIL position verifies<BR>the ability of the detection control units to discriminate between an actual overheat/fire<BR>and false fire (shorted) loops.<BR>The FIREX MONITOR 1 (2) (APU) TEST switches provide a means for the flight<BR>crew to test the respective squib circuitry continuity.<BR>Miscellaneous Test Panel<BR>Figure 9-5<BR>TEST<BR>TEST<BR>TEST<BR>TEST<BR>TEST<BR>WARN<BR>TEST<BR>FIRE DET<BR>1 2 APU<BR>BOTTLE<BR>FAIL<BR>SPS TEST<BR>FIREX MONITOR AURAL<BR>WARN TEST<BR>LAMP<BR>TEST<BR>OVSP<BR>TEST<BR>1<BR>2<BR>ENG BOTTLE<BR>FIREX MONITOR 1 (2) (APU)<BR>TEST Switches<BR>FIRE DET<BR>WARN/FAIL<BR>Switch<BR>P604_09_008<BR>FIRE PROTECTION<BR>9-8 For Training Purposes Only<BR>May 03<BR>P I LOT T R A I N I N G GU I D E<BR>Auxiliary Power Unit Fire Protection<BR>Description<BR>The APU fire detection system is used to detect an overheat/fire condition within the<BR>APU enclosure. The fire detection system continuously monitors the APU. If a fire or<BR>overheat condition is detected, the APU will automatically shut down and an EICAS<BR>message as well as an aural and visual warning will occur. The APU fire extinguishing<BR>system consists of one fire extinguisher bottle.<BR>Components and Operation<BR>Heat-Sensing Element<BR>The APU is protected by one continuous heat-sensing element installed within the<BR>APU enclosure. This sensing element is connected to the APU Fire Detection Control<BR>Unit. Operation of the sensing element is identical to the engine fire detection system.<BR>APU Fire Detection<BR>Figure 9-6<BR>APU Enclosure<BR>Sensing Element<BR>(450°F)<BR>APU COMPARTMENT<BR>VIEW LOOKING FORWARD<BR>P604_09_002<BR>APU Enclosure<BR>FIRE PROTECTION<BR>For Training Purposes Only<BR>May 03<BR>9-9<BR>P I LOT T R A I N I N G GU I D E<BR>Fire Detection Control Unit<BR>The APU has a dedicated fire detection control unit which continuously monitors the<BR>resistance of its own loop. When the electrical resistance decreases to the warning trip<BR>point, the unit produces a fire warning signal to the EICAS which causes the following<BR>aural and visual warnings to occur:<BR>• APU FIRE warning EICAS message is displayed<BR>• MASTER WARNING switch/lights illuminate flashing<BR>• fire bell sounds<BR>• APU FIRE PUSH switch/light illuminates<BR>The APU will also shut down automatically.<BR>The aural warnings can be silenced by pressing either MASTER WARNING switch/<BR>light. However, the EICAS warning message will remain displayed and APU FIRE<BR>PUSH switch/light will remain illuminated until the fire/overheat condition is<BR>corrected.<BR>As with the engine fire-sensing elements, the APU fire detection control unit can<BR>discriminate between an actual fire/overheat and a false fire (i.e., short in the sensing<BR>element). In the event of APU fire detector loop failure, the APU FIRE FAIL caution<BR>EICAS message will be displayed.<BR>APU Fire Extinguishing Bottle<BR>APU fire extinguishing is provided by one Firex bottle located adjacent to the APU<BR>compartment in the aft equipment bay. The bottle is charged with Halon 1301 and<BR>pressurized with dry nitrogen (600 to 625 psi).<BR>The APU Firex bottle is equipped with a pressure gauge and a thermal discharge port<BR>and is connected by a single tube to the APU compartment. The pressurized<BR>extinguishing agent is discharged by a squib with dual firing cartridges, for<BR>redundancy.<BR>The thermal discharge port provides overpressure relief. Operation is identical to the<BR>engine Firex bottles.<BR>FIRE PROTECTION<BR>9-10 For Training Purposes Only<BR>May 03<BR>P I LOT T R A I N I N G GU I D E<BR>APU FIRE PUSH Switch/Light<BR>The APU fire extinguishing system is controlled by the APU FIRE PUSH switch/light.<BR>When the APU FIRE PUSH switch/light is pressed, the following occurs:<BR>• the bottle squibs are armed, APU BOTTLE ARMED PUSH TO DISCH switch/<BR>light illuminates<BR>• APU shuts down (if not already shut down)<BR>• APU fuel shutoff valve (SOV) closes<BR>• APU negative-G shutoff valve (SOV) closes<BR>• APU LCV closes<BR>• APU generator shuts down<BR>APU BOTTLE ARMED PUSH TO DISCH Switch/Light<BR>When an illuminated APU BOTTLE ARMED PUSH TO DISCH switch/light is<BR>pressed, electrical current fires the squibs in the APU bottle and pressurized Halon is<BR>directed into the APU enclosure.<BR>Copilot’s Glareshield Panel<BR>Figure 9-7<BR>Miscellaneous Test Panel<BR>The APU Fire Protection System is tested simultaneously with the Engine Fire<BR>Protection System, via the Miscellaneous Test Panel. Refer to the Engine Fire and<BR>Overheat Protection, Miscellaneous Test Panel section for additional information.<BR>ATS<BR>N1 TO<BR>FAIL<BR>APU<BR>FIRE<BR>PUSH<BR>RH ENG<BR>FIRE<BR>PUSH<BR>GPWS<BR>TERR<BR>INHB<BR>MASTER<BR>BOTTLE 2 WARNING<BR>ARMED<BR>PUSH TO<BR>DISCH<BR>BOTTLE<BR>ARMED<BR>PUSH TO<BR>DISCH<BR>STALL<BR>MASTER<BR>CAUTION<BR>PULL UP<BR>GND PROX<BR>APU FIRE PUSH<BR>Switch/Light<BR>APU BOTTLE ARMED<BR>PUSH TO DISCH<BR>Switch/Light<BR>P604_09_017<BR>FIRE PROTECTION<BR>For Training Purposes Only<BR>May 03<BR>9-11<BR>P I LOT T R A I N I N G GU I D E<BR>Baggage Compartment Fire Protection<BR>Description<BR>Fire protection for the baggage compartment consists of an electronic smoke detector<BR>that interfaces with the EICAS to provide aural and visual warnings.<BR>Components and Operation<BR>Smoke Detector<BR>The aircraft is equipped with a smoke detection system for the baggage compartment.<BR>When the smoke density reaches a predetermined level, the smoke detector produces a<BR>fire warning signal which causes the following aural and visual warnings to occur:<BR>• SMOKE BAGGAGE BAY warning EICAS message is displayed<BR>• MASTER WARNING switch/lights illuminate flashing<BR>• “SMOKE” aural warning sounds<BR>The aural warning can be silenced by pressing either MASTER WARNING switch/<BR>light. However, the EICAS warning message will remain displayed until the unit resets<BR>itself.<BR>Smoke Detector Test<BR>The baggage compartment smoke detector can be tested by the pushing in and holding<BR>the SMK DET test button located on the ANNUNCIATOR Panel.<BR>Smoke Detector Test Button<BR>Figure 9-8<BR>ANNUNCIATOR PANEL<BR>P604_09_010<BR>RESET<BR>CALL SMK<BR>LAV CAB<BR>FIRE PROTECTION<BR>9-12 For Training Purposes Only<BR>May 03<BR>P I LOT T R A I N I N G GU I D E<BR>Lavatory Fire Protection<BR>Description<BR>Fire protection for the lavatory consists of an electronic smoke detector that interfaces<BR>with the EICAS to provide aural and visual warnings and an independent fire<BR>extinguisher that operates automatically in the waste container.<BR>Components and Operation<BR>Smoke Detector<BR>The aircraft is equipped with a smoke detection system in the lavatory. When the<BR>smoke density reaches a predetermined level, the smoke detector produces a signal to<BR>the EICAS to alert the crew and sounds an aural alarm in the lavatory. The lavatory<BR>smoke warning signal causes the following aural and visual warnings to occur:<BR>• SMOKE TOILET warning EICAS message is displayed<BR>• MASTER WARNING switch/lights illuminate flashing<BR>• “SMOKE” aural warning sounds<BR>The aural warning can be silenced by pressing either MASTER WARNING switch/<BR>light. However, the EICAS warning message will remain displayed until the unit resets<BR>itself.<BR>Automatic Fire Extinguisher<BR>In the event of a fire in the lavatory waste container, automatic fire extinguishing is<BR>provided. The bottle is mounted on a bracket beside the waste container. Once the<BR>temperature reaches a predetermined level, two heat-sensitive capsules melt and<BR>release Halon 1211 into the waste container. (Individual aircraft installations may vary,<BR>consult Completion Center documentation for aircraft-specific information.)<BR>FIRE PROTECTION<BR>For Training Purposes Only<BR>May 03<BR>9-13<BR>P I LOT T R A I N I N G GU I D E<BR>Galley Overheat Protection (Optional)<BR>Description<BR>Overheat protection for the galley consists of an optional overheat detection system<BR>that interfaces with the EICAS to provide aural and visual warnings.<BR>Components and Operation<BR>Galley Overheat Detector<BR>When the temperature reaches a predetermined level, the overheat detector provides a<BR>signal to the EICAS to alert the crew of a galley overheat. The galley overheat alert<BR>signal causes the following aural and visual warnings to occur:<BR>• GALLEY OVHT warning EICAS message is displayed<BR>• MASTER WARNING switch/lights illuminate flashing<BR>• a triple attenson sounds<BR>The aural warning can be silenced by pressing either MASTER WARNING switch/<BR>light. However, the EICAS warning message will remain displayed until the unit resets<BR>itself.<BR>FIRE PROTECTION<BR>9-14 For Training Purposes Only<BR>Jan 04<BR>P I LOT T R A I N I N G GU I D E<BR>Portable Fire Extinguishers<BR>Description<BR>Portable Halon 1211 fire extinguishers are provided in both the flight compartment<BR>and the cabin to fight a fire occurring inside the aircraft. Halon 1211 is effective in<BR>fighting Class A, B and C fires.<BR>Components and Operation<BR>Flight Compartment Fire Extinguisher<BR>The flight compartment fire extinguisher is installed behind the copilot’s seat.<BR>Discharging of the Halon is effected by squeezing a spring-loaded lever.<BR>IF A FIRE EXTINGUISHER IS TO BE DISCHARGED IN THE<BR>FLIGHT COMPARTMENT, ALL FLIGHT CREW MUST WEAR<BR>OXYGEN MASKS WITH EMERGENCY SELECTED (100%<BR>OXYGEN).<BR>CREW EXPOSURE TO HIGH LEVELS OF HALON VAPORS<BR>MAY RESULT IN DIZZINESS, IMPAIRED COORDINATION,<BR>AND REDUCED MENTAL SHARPNESS.<BR>Cabin Fire Extinguisher<BR>The cabin fire extinguisher is installed during completion and its location may vary<BR>depending on the interior configuration. Consult the aircraft Completion Center<BR>manual for the specific location(s). Operation is identical to the Flight Compartment<BR>fire extinguisher.<BR>WARNING<BR>FIRE PROTECTION<BR>For Training Purposes Only<BR>Sept 04<BR>9-15<BR>P I LOT T R A I N I N G GU I D E<BR>Main Landing Gear Bay Overheat Detection System<BR>Description<BR>The Main Landing Gear (MLG) is protected by a continuous-loop overheat detection<BR>system in each wheel bin. The loops are monitored for resistance by the overheat<BR>detection control unit which, through EICAS, provides aural and visual warnings of an<BR>overheat condition in the main wheel bins.<BR>Components and Operation<BR>Heat-Sensing Element<BR>The main landing gear bay heat-sensing elements (loops) are installed around the top<BR>inner surface of the main wheel bins. Operation is identical to the engine and APU<BR>fire-sensing elements. The loops are connected to the MLG overheat detection control<BR>unit.<BR>Main Landing Gear Bay Overheat Heat-Sensing Element<BR>Figure 9-9<BR>P604_09_011<BR>Wheel Bins<BR>Detection Loop<BR>FIRE PROTECTION<BR>9-16 For Training Purposes Only<BR>May 03<BR>P I LOT T R A I N I N G GU I D E<BR>Overheat Detection Control Unit<BR>The overheat detection control unit continuously monitors the loop resistance of the<BR>sensing element (loop). When the electrical resistance decreases to the warning trip<BR>point, the unit produces an overheat warning signal to the EICAS, which causes the<BR>following aural and visual warnings to occur:<BR>• MLG BAY OVHT warning EICAS message is displayed<BR>• MASTER WARNING switch/lights illuminate flashing<BR>• “GEAR BAY OVERHEAT” aural warning sounds<BR>The overheat detection control unit can discriminate between an actual overheat and a<BR>false overheat (i.e., short in the sensing element). In the event of main landing gear<BR>overheat detector failure, the MLG BAY OVHT FAIL caution EICAS message will be<BR>displayed.<BR>MLG BAY Overheat Test<BR>The MLG BAY overheat detection system can be tested from the LDG GEAR<BR>CONTROL panel located on the center forward pedestal. The OVHT test switch is<BR>used to verify the continuity of the heat-sensing element by simulating an overheat/fire<BR>condition. The FAIL test switch is used to verify the ability of the detection control<BR>unit to discriminate between an actual overheat/fire and false overheat/fire (shorted)<BR>loop.<BR>LDG GEAR CONTROL Panel<BR>Figure 9-10<BR>MUTED<BR>OFF<BR>TEST<BR>MLG BAY OVHT TEST<BR>OVHT FAIL<BR>UP DN<BR>LDG GEAR<BR>DN LCK<BR>REL<BR>ANTI-SKID<BR>ARMED<BR>NOSE STEER<BR>ARMED<BR>HORN<BR>OFF<BR>OVHT TEST Switch FAIL TEST Switch<BR>P604_09_012<BR>FIRE PROTECTION<BR>For Training Purposes Only<BR>May 03<BR>9-17<BR>P I LOT T R A I N I N G GU I D E<BR>Controls and Indicators<BR>General<BR>The controls for the various fire protection systems are located on the glareshield; the<BR>systems advisory, caution and warning messages are displayed on EICAS, and the test<BR>switches are located on the MISCELLANEOUS TEST Panel and LDG GEAR control<BR>panel.<BR>Engine and APU Fire/Overheat Protection<BR>Glareshield Panels<BR>Figure 9-11<BR>ATS<BR>N1 TO<BR>FAIL<BR>APU<BR>FIRE<BR>PUSH<BR>RH ENG<BR>FIRE<BR>PUSH<BR>GPWS<BR>TERR<BR>INHB<BR>MASTER<BR>BOTTLE 2 WARNING<BR>ARMED<BR>PUSH TO<BR>DISCH<BR>BOTTLE<BR>ARMED<BR>PUSH TO<BR>DISCH<BR>STALL<BR>MASTER<BR>CAUTION<BR>PULL UP<BR>GND PROX<BR>LH ENG<BR>FIRE<BR>PUSH<BR>GPWS<BR>TERR<BR>INHB<BR>MASTER<BR>WARNING BOTTLE 1<BR>ARMED<BR>PUSH TO<BR>DISCH<BR>STALL<BR>MASTER<BR>CAUTION<BR>PULL UP<BR>GND PROX<BR>ATS<BR>N2 SYNC<BR>ATS<BR>N1 TO<BR>FAIL<BR>LH ENGINE FIRE PUSH Switch/Light<BR>(guarded, alternate-action)<BR>Push:<BR>Illuminated<BR><BR><BR><BR><BR><BR><BR>arms Firex bottle 1 and 2, BOTTLE 1 (2) ARMED PUSH TO<BR>DISCH switch/lights illuminate green<BR>closes left fuel shutoff valve (SOV)<BR>closes left hydraulic shutoff valve (SOV)<BR>shuts down generator 1<BR>closes left 10th- and 14th-stage bleed air shutoff valves (SOVs)<BR>disables left engine ignition<BR>– Indicates a left engine overheat/fire condition.<BR>BOTTLE 1 ARMED PUSH TO DISCH<BR>Switch/Light (momentary-action)<BR>Push<BR>Illuminated<BR>– Fires squib to discharge Firex bottle 1<BR>agent into applicable engine.<BR>– Indicates Firex bottle 1 is armed<BR>for discharge.<BR>: Switch/light will extinguish after agent<BR>is discharged.<BR>NOTE<BR>BOTTLE 2 ARMED PUSH TO DISCH<BR>Switch/Light (momentary-action)<BR>Push<BR>Illuminated<BR>– Fires squib to discharge Firex bottle 2<BR>agent into the applicable engine.<BR>– Indicates Firex bottle 2 is armed<BR>for discharge.<BR>: Switch/light will extinguish after agent is<BR>discharged.<BR>NOTE<BR>RH ENGINE FIRE PUSH Switch/Light<BR>(guarded, alternate-action)<BR>Push:<BR><BR><BR><BR><BR><BR><BR>arms Firex bottle 1 and 2, BOTTLE 1 (2) ARMED PUSH TO<BR>DISCH switch/lights illuminate green<BR>closes right fuel shutoff valve (SOV)<BR>closes right hydraulic shutoff valve (SOV)<BR>shuts down generator 2<BR>closes right 10th- and 14th-stage bleed air shutoff valves<BR>(SOVs)<BR>disables right engine ignition<BR>P604_09_013<BR>APU ENGINE FIRE PUSH Switch/Light<BR>(guarded, alternate-action)<BR>Push:<BR>Illuminated<BR><BR><BR><BR><BR><BR>commands an APU shutdown.<BR>arms APU Firex bottle, APU BOTTLE<BR>ARMED PUSH TO DISCH switch/light<BR>illuminates green.<BR>closes APU Fuel Shutoff Valve and<BR>Negative-G Shutoff Valve<BR>closes APU LCV<BR>shuts down APU generator<BR>– Indicates an APU<BR>overheat/fire condition.<BR>APU BOTTLE ARMED PUSH TO DISCH<BR>Switch/Light (momentary-action)<BR>Push<BR>Illuminated<BR>– Fires squib to discharge APU Firex bottle<BR>agent into the APU enclosure.<BR>– Indicates APU Firex bottle is armed<BR>for discharge.<BR>: Switch/light will extinguish after agent is<BR>discharged.<BR>NOTE<BR>LEFT GLARESHIELD<BR>RIGHT GLARESHIELD<BR>FIRE PROTECTION<BR>9-18 For Training Purposes Only<BR>May 03<BR>P I LOT T R A I N I N G GU I D E<BR>Fire Detection and FIREX Monitor Test<BR>Miscellaneous Test Panel<BR>Figure 9-12<BR>MLG Bay Overheat Test<BR>Landing Gear Control Panel<BR>Figure 9-13<BR>TEST<BR>TEST<BR>TEST<BR>TEST<BR>TEST<BR>WARN<BR>TEST<BR>FIRE DET<BR>1 2 APU<BR>BOTTLE<BR>FAIL<BR>L R G SWITCH<BR>SPS TEST<BR>FIREX MONITOR AURAL<BR>WARN TEST<BR>LAMP<BR>TEST<BR>OVSP<BR>TEST<BR>1<BR>2<BR>1<BR>2<BR>1<BR>2<BR>ENG BOTTLE<BR>P604_09_018<BR>FIREX MONITOR TEST Switches<BR>(spring-loaded to normal position)<BR>TEST – Tests applicable Firex bottle<BR>squib circuit continuity.<BR>FIRE DET Switch (spring-loaded to OFF)<BR>WARN<BR>FAIL<BR>– Tests engine (both engine and jet<BR>pipe/pylon) and APU fire detection loops for<BR>continuity by simulating an overheat/fire<BR>condition, verifies engine and APU bottle<BR>charge.<BR>– Tests engine (both engine and jet<BR>pipe/pylon) and APU fire detection units’<BR>ability to discriminate between a shorted<BR>loop and an actual overheat/fire.<BR>MUTED<BR>OFF<BR>TEST<BR>MLG BAY OVHT TEST<BR>OVHT FAIL<BR>UP DN<BR>LDG GEAR<BR>DN LCK<BR>REL<BR>ANTI-SKID<BR>ARMED<BR>NOSE STEER<BR>ARMED<BR>HORN<BR>OFF<BR>P604_09_014<BR>MLG BAY OVHT TEST Switch<BR>(spring-loaded to normal position)<BR>OVHT – Tests MLG Bay overheat loop<BR>continuity by simulating an overheat<BR>condition in the main landing gear bay.<BR>MLG BAY OVHT Warning FAIL TEST Switch<BR>(spring-loaded to normal position)<BR>FAIL – Tests MLG Bay overheat detection control units’<BR>ability to discriminate between a shorted loop and an<BR>actual overheat.<BR>FIRE PROTECTION<BR>For Training Purposes Only<BR>May 03<BR>9-19<BR>P I LOT T R A I N I N G GU I D E<BR>Baggage Smoke Detector Test<BR>Annunciator Panel<BR>Figure 9-14<BR>RESET<BR>CALL SMK<BR>LAV CAB<BR>P604_09_015<BR>SMK DET Switch (momentary-action)<BR>Push – Tests the baggage compartment<BR>smoke detector unit.<BR>FIRE PROTECTION<BR>9-20 For Training Purposes Only<BR>Jan 04<BR>P I LOT T R A I N I N G GU I D E<BR>EICAS Messages<BR>The fire and overheat protection system messages are shown on the EICAS Primary<BR>and Status pages. The fire and overheat protection system messages and aural<BR>warnings are listed below. A brief explanation of each message is provided.<BR>MESSAGE MEANING AURAL WARNING<BR>(IF ANY)<BR>APU FIRE Fire detected in the APU enclosure. FIRE BELL<BR>L ENGINE FIRE<BR>Fire detected in the respective engine nacelle. FIRE BELL<BR>R ENGINE FIRE<BR>L JETPIPE OVHT<BR>Overheat detected in the respective jetpipe and/or pylon area. “JETPIPE OVERR<BR>JETPIPE OVHT HEAT”<BR>GALLEY OVHT Galley overheat detected (if galley overheat detector is installed). TRIPLE ATTENSON<BR>SMOKE BAGGAGE BAY Smoke detected in the baggage compartment. “SMOKE”<BR>SMOKE TOILET Smoke detected in the lavatory area. “SMOKE”<BR>APU BOTTLE LO APU firex bottle pressure is low.<BR>APU FIRE FAIL APU fire detection loop is failed (shorted out).<BR>APU NEG-G SOV<BR>APU negative-G shutoff valve is open after actuation of the APU FIRE PUSH switch/light,<BR>or the negative-G shutoff valve position does not match the APU PWR FUEL switch/light<BR>position within 5 seconds.<BR>APU SOV<BR>APU fuel shutoff valve is open after actuation of the APU FIRE PUSH switch/light, or the<BR>fuel shutoff valve position does not match the APU PWR FUEL switch/light position within 5<BR>seconds.<BR>ENG BOTTLE 1 LO<BR>Respective engine firex bottle pressure is low.<BR>ENG BOTTLE 2 LO<BR>L ENG SOV Respective fuel shutoff valve is not closed after actuation of the ENG FIRE PUSH switch/<BR>R ENG SOV light.<BR>L FIRE FAIL<BR>Respective fire detection loop is failed (shorted out).<BR>R FIRE FAIL<BR>HYD SOV 1 Hydraulic shutoff valve is not closed after actuation of the respective ENG FIRE PUSH<BR>HYD SOV 2 switch/light.<BR>L JETPIPE OVHT FAIL<BR>The respective jetpipe/pylon overheat detection loop is failed (shorted out).<BR>R JETPIPE OVHT FAIL<BR>APU SOV CLSD APU fuel shutoff and negative-G shutoff valves have closed after actuation of the APU<BR>FIRE PUSH switch/light.<BR>APU SQUIB 1 OK<BR>Respective squib has passed its self-test.<BR>APU SQUIB 2 OK<BR>L ENG SOV CLSD Respective engine fuel shutoff valve has closed after actuation of respective ENG FIRE<BR>R ENG SOV CLSD PUSH switch/light.<BR>L ENG SQUIB 1 OK<BR>Respective squib has passed its self-test.<BR>L ENG SQUIB 2 OK<BR>R ENG SQUIB 1 OK<BR>R ENG SQUIB 2 OK<BR>HYD SOV 1 CLSD Respective hydraulic shutoff valve has closed after actuation of the respective ENG FIRE<BR>HYD SOV 2 CLSD PUSH switch/light.<BR>EICAS Messages<BR>Table 9-1 庞巴迪挑战者的资料好多啊。
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