CAUTION:_______DO NOT PUT SHUNT PLUGS ON THE FIRE BOTTLE SQUIBS. THE SHUNT PLUGS CAN CAUSE DAMAGE TO THE SQUIB PINS.
(9) Put the protective covers on the fire bottle squibs.
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WARNING: DO NOT INSTALL THE ELECTRICAL CONNECTOR TO THE BOTTLE SQUIB
_______ WHEN YOU DO A TEST. IF THE BOTTLE SQUIBS ARE ACCIDENTALLY FIRED, IT CAN CAUSE INJURY TO PERSONS.
(10) Make sure that the six EICAS circuit breakers on the overhead circuit breaker panel, P11, are closed.
E. Test Extinguisher Bottle Squib Discharge Circuit
S 485-165
(1)
Attach the adapter cable to the connector on the squib circuit test box.
S 865-057
(2)
Set the LOAD CHECK switch on the squib circuit test box to OFF.
S 425-058
(3)
Connect the APU squib connector, D2262, to the squib circuit test box adapter cable.
NOTE: Adapter cables are included with the squib circuit tester and
____ must have the correct connectors.
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(4) Remove the DO-NOT-CLOSE tag and close this circuit breaker on the P6 panel: (a) 6G1, FIRE EXT APU
S 985-061
(5) Connect the multimeter to the voltmeter jacks on the squib circuit test box.
S 865-062
(6)
Set the LOAD CHECK switch on the squib circuit test box to ON.
S 765-153
(7)
On the P8 panel, pull the APU fire handle out to the emergency fire position.
NOTE: When you pull the fire handles into the emergency fire
____ position, you must push the manual fire override switch, located behind the fire handle. When you turn the fire handle, you must hold the handle against the stops while the voltage is measured.
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(8)
Make sure the multimeter on the squib circuit test box shows 0 |2 volts.
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(9)
Make sure that the BOTTLE DISCHARGE light on the squib circuit test box stays off.
S 865-063
(10)
Turn and hold the APU fire handle fully counterclockwise.
S 765-064
(11)
Make sure the BOTTLE DISCHARGE light on the squib circuit test box comes on.
S 975-065
(12)
Make sure that the multimeter on the squib circuit test box shows 16 volts minimum.
NOTE: If voltage is less than 16 volts, the circuit may not provide
____ sufficient current to fire the squib.
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(13) Release the APU fire handle and make sure the fire handle moves quickly toward center about 10 degrees.
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(14)
Make sure the multimeter on the squib circuit test box shows 0 |2 volts and the BOTTLE DISCHARGE light on the squib circuit test box stays off.
S 765-141
(15)
Turn and hold the APU fire handle fully clockwise.
S 975-142
(16)
Make sure the BOTTLE DISCHARGE light on the squib circuit test box comes on.
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(17)
Make sure the multimeter on the squib circuit test box shows more than 16 volts.
NOTE: If the voltage is less than 16 volts, the circuit may not
____
provide sufficient current to fire the squib.
S 765-144
(18)
Release the APU fire handle and make sure the fire handle moves quickly toward center about 10 degrees.
S 765-145 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：757 AMM 飞机维护手册 防火 FIRE PROTECTION 2(48)
