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There are six smoke detectors three in loop a and

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There are six smoke detectors (three in loop A and three in loop B) in the aft cargo compartment. Red LED lights on the front of the CEU labeled 1A, 1B, 2A, 2B, 3A and 3B connect to smoke detectors. The remaining LED lights are active and connect externally by a jumper cable loop. Training Information Point The cargo electronic unit is an LRU. There is no scheduled maintenance of the cargo electronic units. FIRE PROTECTION - LWR CARGO COMPARTMENT SMOKE DETECTION - CARGO ELECTRONIC UNIT EFFECTIVITY AMX ALL 26-16-00 Page 10 Jun 10/2003 D633A101-AMX BOEING PROPRIETARY - Copyright # - Unpublished Work - See title page for details. 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL 26-16-00-006
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FIRE PROTECTION - LWR CARGO COMPARTMENT SMOKE DETECTION - CARGO ELECTRONIC UNIT FIRE PROTECTION - LWR CARGO COMPARTMENT SMOKE DETECTION - CARGO ELECTRONIC UNIT EFFECTIVITY AMX ALL 26-16-00 Page 11 Jun 10/2003 D633A101-AMX BOEING PROPRIETARY - Copyright # - Unpublished Work - See title page for details. 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL 26-16-00-006
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THIS PAGE IS INTENTIONALLY LEFT BLANK FIRE PROTECTION - LWR CARGO COMPARTMENT SMOKE DETECTION - CARGO ELECTRONIC UNIT 26-16-00 Page 12 Jun 10/2003 D633A101-AMX BOEING PROPRIETARY - Copyright # - Unpublished Work - See title page for details. 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
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Purpose The cargo fire control panel monitors the fire protection system for these conditions: * Lower cargo compartment smoke * Lower cargo compartment overheat * Smoke detector fault conditions * Cargo fire extinguisher bottle squib condition * Cargo fire extinguisher bottle discharge. The cargo fire control panel lets you do these functions: * Set the mode of operation (single or dual loop smoke detector operation) * Operate a cargo fire extinguisher bottle * Do a test of the cargo fire extinguisher bottle squibs * Do a test of the lower cargo fire protection system * Do a test of the fault detection circuits. Physical Description These are the cargo fire control panel components: * Amber DETECTOR FAULT light * DET SELECT switches * Green FWD and AFT EXT lights * Amber DISCH switchlight (guarded) * FWD and AFT cargo fire arm switches * TEST push-button switch. General Description The DETECTOR FAULT amber light comes on if a cargo smoke detector has a fault. Each DET SELECT switch has these three positions: * NORM - both detector loops are necessary to sense a smoke or overheat condition to give a fire indication * A - only the A loop is necessary to sense a smoke or overheat condition for a fire indication * B - only the B loop is necessary to sense a smoke or overheat condition for a fire indication. The green FWD and AFT EXT lights show extinguisher bottle squib continuity. The DISCH switchlightcomes on when the bottle pressure is less than 250 psi. The TEST push button does a check of the cargo smoke detectors and the extinguishing system.
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  • Fall '19
  • Active fire protection, Fire protection, Smoke detector, Fire alarm control panel, Fire alarm system

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