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757 MAINTENANCE MANUAL
G. Squib Electrical Connection Procedure
NOTE: Do this procedure each time you connect an electrical connector to
____
a fire bottle squib.
S 435-198
(1) Do the steps that follow to connect an electrical connector to a fire bottle squib.
(a) Remove the protective cover from the fire bottle squib.
WARNING: MAKE SURE THERE IS NO VOLTAGE AT THE ELECTRICAL CONNECTOR.
_______ IF THERE IS A VOLTAGE AT THE ELECTRICAL CONNECTOR, THE SQUIB CAN RELEASE ITS CONTENTS SUDDENLY AND CAUSE INJURY TO PERSONS.
(b) Make sure there is no voltage between pins 1 and 2 of the electrical connector.
NOTE: Connect a 10k ohm resistor across the meter to
____ remove any stray voltage from the electrical connector.
(c) Do the steps that follow to make sure you did not bend or damage the squib pins.
NOTE: This step is necessary because the pins are most likely
____ to be damaged the first time an electrical connector is connected to the squib.
1) Disconnect the electrical connector from the fire bottle
squib. 2) Make sure the squib pins are not bent or damaged. 3) Make sure the electrical connector is not damaged.
NOTE: The squib pins can cause damage to the connector if
____ the pins do not enter the electrical connector receptacles.
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757 MAINTENANCE MANUAL
4) Connect the electrical connector to the fire bottle squib.
H. Connect the Squib Connectors
S 865-025
(1) Open these circuit breakers on the P6 panel and attach DO-NOT-CLOSE tags:
(a)
6H1, FIRE EXTINGUISHING ENG L BTL 1
(b)
6H2, FIRE EXTINGUISHING ENG L BTL 2
(c)
6H3, FIRE EXTINGUISHING ENG R BTL 1
(d)
6H4, FIRE EXTINGUISHING ENG R BTL 2
S 865-026
(2) Make sure these circuit breakers on the P11 panel are closed:
(a)
11A32, IND LTS CKT 1
(b)
11A33, IND LTS CKT 2
S 425-027
(3)
Do the Squib Electrical Connection procedure to connect the
electrical connector, D2188, to the left squib of bottle 1.
S 865-029
(4)
Remove the DO-NOT-CLOSE tag and close this circuit breaker on the P6 panel:
(a) 6H1, FIRE EXTINGUISHING ENG L BTL 1
S 865-030
(5) On the SQUIB TEST Control Panel, P61, push and hold the TEST switch.
(a)
Make sure the green L ENG 1 squib test light on the SQUIB TEST Control Panel, P61, comes on.
(b)
Make sure the R ENG 1, L ENG 2, and R ENG 2 squib test lights stay off.
S 865-034
(6) Release the TEST switch.
(a) Make sure the L ENG 1 squib test light goes off.
S 865-036
(7) Make sure this circuit breaker on the P6 panel is open:
(a) 6H3, FIRE EXTINGUISHING ENG R BTL 1
S 425-037
(8) Do the Squib Electrical Connection procedure to connect the electrical connector, D2190, to the right squib of bottle 1.
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S 865-038
(9) Remove the DO-NOT-CLOSE tag and close this circuit breaker on the P6 panel:
(a) 6H3, FIRE EXTINGUISHING ENG R BTL 1
S 865-039
(10) On the SQUIB TEST Control Panel, P61, push and hold the TEST switch.
(a)
Make sure the green L ENG 1 and R ENG 1 squib test lights on the SQUIB TEST Control Panel, P61, come on.
(b) 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(16)
