(b)
6H5, FIRE EXTINGUISHING CARGO BTL 1
(c)
6H6, FIRE EXTINGUISHING CARGO BTL 2
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757 MAINTENANCE MANUAL
(3) S 867-007Install or close the bulkhead lining (AMM 25-50-03/401).
(4) S 867-008Close the cargo doors.
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CARGO FIRE EXTINGUISHING ARMED SWITCHES - INSPECTION/CHECK
__________________________________________________________
1. General
_______
A. This procedure does a check of the cargo fire extinguishing armed switches to make sure the firing circuit operates correctly, and to verify cargo compartments isolation after the fire armed switches are activated.
B. This procedure contains these tasks:
(1)
Cargo Fire Extinguisher Armed Switch Activation Check
(2)
Forward Cargo Heat Stops after the FWD ARMED Switch Activation Check
(3)
Aft Cargo Heat Stops after the AFT ARMED Switch Activation Check
(4)
Left and Right Air Conditioning Recirculation System Stop and Overboard Exhaust Valve Opens after the FWD ARMED Switch Activation Check
(5)
Right Air Conditioning Recirculation System Stops after the AFT ARMED Switch Activation Check
TASK 26-23-01-706-182
2. Cargo Fire Extinguishing Armed Switch Activation Check (Fig. 601)
______________________________________________________
A. Equipment
(1)
Multimeter 0-1000 VDC | 1%, 0-750 VAC 0-2 AMPS,
0-2, MEG OHMS. Commercially available
(2)
Voltmeter - with a 10k ohm or greater
resistance
(3)
Electrical Test Equipment - Bottle Squib, Fire
Extinguisher System - A26001-165
NOTE: The A26001 test box does not include the test adapter cables.
____ The test adapter cables must be ordered separately. Refer to the A26001 drawing for the required cables.
B. References
(1)
AMM 24-22-00/201, Electrical Power
(2)
AMM 32-09-02/201, Air/Ground Relays
C. Access
(1)
Location Zones
153 Aft Cargo Compartment (Left)
154 Aft Cargo Compartment (Right)
(2)
Access Panels
822 Aft Cargo Compartment Door
D. Prepare for Test
S 866-001
(1) Supply electrical power (AMM 24-22-00/201).
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TO FORWARD REGULATOR COMPARTMENT TUBING
1
BOTTLE NO. 1,
FIRE BOTTLE NO. 2
EXTINGUISHER SEE A
TUBING
DISTRIBUTION
NOZZLE
(EXAMPLE)
FILTER/DRIER
1
AFT FWD
CARGO
DOOR
AFT CARGO COMPARTMENT
PUSHBUTTONPRESSURE OR HEX KEYSWITCH
THERMAL RELIEF AND REFILL
SEE B
FLIGHT COMPARTMENT
CARRYING HANDLES
ARMED ARMED
FWD AFT
MOUNTING
r r C
BRACKETS
A R G O
DISCHARGE 1-BTL DISCH-2 PORT
F I R E
DISCH DISCH
a DISCHARGE
SQUIB
a
CARGO FIRE BOTTLE
APU/CARGO FIRE CONTROL PANEL A
B
GUN 0511
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