2-306.24 Change 4TM 9-2350-267-20CREW AUTOMATIC FIRE EXTINGUISHING SYSTEMIFIRE DETECTION TEST AND ALARMPANEL INDICATORSCREW AFES MEGOMETER TROUBLESHOOTING PROCEDURES.(EFFECTIVE FOR ALL VEHICLES)The FAASV Automatic Fire Extinguishing System (AFES) Troubleshooting Aid is a test box and set of seven connecting cables, developed by HTL, to assist the FAASVuser in troubleshooting the FAASV AFES. Using the troubleshooting aid allows testing of both the crew and engine subsystems individually without the fear of accidentaldischarge of fire extinguishers. This is accomplished by disconnecting the FAASV’S installed fire extinguishers from the AFES and substituting “dummy” simulationfire extinguishers contained within the test box. Use of the troubleshooting aid speeds fault finding and helps achieve a more accurate fault diagnosis by allowingmaintenance personnel to take measurement at the test box. The troubleshooting aid allows the user to isolate an AFES problem without moving the projectile racks, savingconsiderable time and effort. The troubleshooting aid should be used in conjunction with TM 9-2350-267-20 as the technical manual is used for reference in the followingtroubleshooting procedure.
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