26___021.PDF

Each bottle has two discharge assemblies squibs

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Each bottle has two discharge assemblies (squibs) connected to the discharge tubing. The discharge tubing with check valves sends the extinguisher agent to the left and right engine from each bottle. Location The two engine fire extinguisher bottles are in the main wheel well. The bottles attach to brackets in the top left corner of the main wheel well. Operation When you pull up and turn the engine fire warning switch, you operate the squib. The squib breaks a seal in the bottle. This causes the bottle to release halon. The halon gas flows from the bottle to the selected engine compartment. You can send halon from either one or both bottles to the same engine. If the bottle temperature increases to 266F (130C),the safety relief port ruptures. This releases halon into the wheel well. Training Information Point The discharge tubing fittings from the two fire extinguisher bottles are different size. Also the tubing has colored tape, yellow for engine 1 and blue for engine 2. WARNING: MAKE SURE THERE ARE CAPS OR SHUNT PLUGS INSTALLED ON THE SQUIBS WHEN YOU TOUCH OR MOVE THE SQUIBS. THE SQUIB IS AN EXPLOSIVE DEVICE AND CAN CAUSE INJURY IF IT IS ACCIDENTALLY FIRED. FIRE PROTECTION - ENGINE FIRE EXTINGUISHING - EXTINGUISHER BOTTLE EFFECTIVITY AMX ALL 26-21-00 Page 6 Jun 10/2003 D633A101-AMX BOEING PROPRIETARY - Copyright # - Unpublished Work - See title page for details. 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL 26-21-00-010
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FIRE PROTECTION - ENGINE FIRE EXTINGUISHING - EXTINGUISHER BOTTLE FIRE PROTECTION - ENGINE FIRE EXTINGUISHING - EXTINGUISHER BOTTLE EFFECTIVITY AMX ALL 26-21-00 Page 7 Jun 10/2003 D633A101-AMX BOEING PROPRIETARY - Copyright # - Unpublished Work - See title page for details. 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL 26-21-00-010
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Purpose The purpose of the squib is to break the diaphragm seal and start the release of the halon gas from the bottle. Physical Description The squib is an explosive device that operates electrically. It is adjacent to a bottle diaphragm that can break. The diaphragm normally seals the pressurized bottle. Location The squibs are in the discharge assembly at the bottom of the extinguisher bottles. Functional Description A squib operates when you turn a fire warning switch. The explosion breaks open the diaphragm. The nitrogen pressure in the bottle pushes the halon through the discharge port. WARNING: MAKE SURE THERE ARE CAPS OR SHUNT PLUGS INSTALLED ON THE SQUIBS WHEN YOU TOUCH OR MOVE THE SQUIBS. THE SQUIB IS AN EXPLOSIVE DEVICE AND CAN CAUSE INJURY IF IT IS ACCIDENTALLY FIRED. FIRE PROTECTION - ENGINE FIRE EXTINGUISHING - EXTINGUISHER BOTTLE SQUIB EFFECTIVITY AMX ALL 26-21-00 Page 8 Jun 10/2003 D633A101-AMX BOEING PROPRIETARY - Copyright # - Unpublished Work - See title page for details. 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL 26-21-00-015
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FIRE PROTECTION - ENGINE FIRE EXTINGUISHING - EXTINGUISHER BOTTLE SQUIB FIRE PROTECTION - ENGINE FIRE EXTINGUISHING - EXTINGUISHER BOTTLE SQUIB EFFECTIVITY AMX ALL 26-21-00 Page 9 Jun 10/2003 D633A101-AMX BOEING PROPRIETARY - Copyright # - Unpublished Work - See title page for details.
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  • Fall '19
  • Active fire protection, Fire protection, Smoke detector, Fire alarm control panel, Fire alarm system

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