TASK 26-23-00-715-348
3. Operational Test - Bottle Pressure Switch_________________________________________
A. References
(1)
AMM 24-22-00/201, Manual Control
(2)
AIPC 26-23-11, Fig. 1
(3)
WDM 26-23-11 thru WDM 26-23-12
(4)
SSM 26-23-01
B.
Access
(1)
Location Zones 124 Forward Cargo Container Compartment Aft Half 142 Aft Cargo Container Compartment R.H. 221 Control Cabin, LH 222 Control Cabin, RH
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C.
D.
E.
A
747-400 MAINTENANCE MANUAL
Prepare for the Test
S 865-350
(1)
Supply electrical power (AMM 24-22-00/201).
S 865-351
(2)
Do the "Put the Air/Ground Relay System Back in the Ground Mode"
task (AMM 32-09-02/201).Bottle A Pressure Switch Test
S 865-352
(1)
At the cargo fire extinguisher bottle A M7906, push and hold the manual override button on the pressure switch casing.
S 735-045
(2)
Make sure the DISCH light on the fire control module M7326 on the pilot's overhead maintenance panel P5 comes on.
S 735-284
(3)
Make sure the status message "BLT LOW CARGO A" and the advisory message ">CGO BTL DISCH" show on the EICAS.
S 865-048
(4)
Release the manual override button.
S 735-049
(5)
Make sure the DISCH light on the fire control module M7326 (P5) goes off.
S 735-050
(6)
Make sure the advisory and status messages do not show on the EICAS
screen.Bottle B Pressure Switch Test
S 865-052
(1)
At cargo fire extinguisher bottle B M7907, push and hold the manual override button on the pressure switch casing.
S 735-053
(2)
Make sure the DISCH light on the fire control module M7326 (P5) comes on.
S 735-273
(3)
Make sure the status message "BTL LOW CARGO B", and the advisory message ">CGO BTL DISCH" show on the EICAS.
(4)
Release the manual override button.
S 865-056
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 735-057
(5)
Make sure the DISCH light on the fire control module M7326 (P5) goes off.
S 735-058
(6)
Make sure the advisory and status messages do not show on the EICAS screen.
F.
Bottle C Pressure Switch Test
S 865-060
(1)
At cargo fire extinguisher bottle C M7908, push and hold the manual override button on the pressure switch casing.
S 735-061
(2)
Make sure the DISCH light on the fire control module M7326 (P5) comes on.
S 735-272
(3)
Make sure the status message "BTL LOW CARGO C", and the advisory message ">CGO BTL DISCH" shows on the EICAS.
S 865-064
(4)
Release the manual override button.
S 735-065
(5)
Make sure the DISCH light on the fire control module M7326 (P5) goes off.
S 735-066
(6)
Make sure the advisory and status messages do not show on the EICAS screen.
G.
Bottle D Pressure Switch Test
S 865-068
(1)
At cargo fire extinguisher bottle D M6742, push and hold the manual override button on the pressure switch casing.
S 735-069
(2)
Make sure the DISCH light on the fire control module M7326 (P5) comes on.
S 735-271
(3)
Make sure the status message "BTL LOW CARGO D", and the advisory ">CGO BTL DISCH" show on the EICAS.
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本文链接地址：747-400 AMM 飞机维护手册 防火 FIRE PROTECTION 2(115)
