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.
4) Connect the electrical connector to the fire bottle squib.
F. Do a test of the squib connection of the fire extinguisher bottle:
S 864-081
(1)
Supply electrical power (AMM 24-22-00).
S 434-082
(2)
Do the Squib Electrical Connection procedure to connect the
electrical connector D2262 to the fire bottle squib.
S 864-049
(3)
Remove the DO-NOT-CLOSE tag and close this circuit breaker on the P6 panel:
(a) 6G1, FIRE EXT APU
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S 864-159
(4) Make sure the following circuit breaker on the main power
distribution panel, P6 is closed.
(a) 6H1, FIRE EXTINGUISHING ENG L BTL 1
S 864-064
(5)
At the SQUIB TEST control panel, P61, push and hold the TEST switch.
S 744-066
(6)
Make sure the green APU squib light on the SQUIB TEST Control panel, P61, comes on.
S 864-067
(7)
Release the TEST switch.
S 744-069
(8)
Make sure the APU squib light goes off.
G. Do a test of the pressure switch of the fire extinguisher bottle.
S 214-108
(1)
GUN 051; At APU fire extinguisher bottle, turn the pressure switch test hex key clockwise.
S 214-109
(2)
GUN 001-050, 052-999; At APU fire extinguisher bottle, push and hold the ground test pushbutton on the pressure switch casing.
S 214-054
(3)
Make sure the yellow APU BTL DISCH light on the pilots' aft control stand panel, P8, comes on.
S 214-110
(4)
GUN 051;
Release the hex key.
S 214-111
(5)
GUN 001-050, 052-999;
Release the ground test pushbutton.
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(6) S 214-060Make sure the APU BTL DISCH light goes off.
(7) S 864-062Remove electrical power if it is not necessary (AMM 24-22-00/201).
(8) S 414-063Close the controls bay access door 313AL (AMM 06-42-00).
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APU FIRE EXTINGUISHING: APU FIRE SWITCH -
________________________________________ INSPECTION/CHECK
________________
1. General_______
A. This procedure will do a check of these APU Fire Switch functions:
(1)
APU fire discharge circuit
(2)
APU generator field control relay
(3)
APU fuel valve operation
(4)
APU air supply valve operation
(5)
APU shutdown
TASK 26-22-02-766-001
2. APU Fire Discharge Circuit Check________________________________
A. General
(1) This procedure makes sure the APU fire discharge circuit operates correctly.
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