26-16-00
ALL ú ú 13 Page 514 ú Jun 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
~.................................................................
| | | EICAS MESSAGES |
| SMOKE | ......................................
| DETECTOR | | WARNING | STATUS |
| CONNECTOR | LABEL | (DOES NOT SHOW) | (DOES SHOW) |
................................................................... |DM4899 |AFT CARGO 2 |FIRE CARGO AFT |AFT CARGO 2 LP A | | |LP A | | | ................................................................... |DM4900 |AFT CARGO 2 |FIRE CARGO AFT |AFT CARGO 2 LP B | | |LP B | | | ................................................................... |DM7902 |AFT CARGO 3 |FIRE CARGO AFT |AFT CARGO 3 LP A | | |LP A | | | ................................................................... |DM7903 |AFT CARGO 3 |FIRE CARGO AFT |AFT CARGO 3 LP B | | |LP B | | | ................................................................... |DM7904 |AFT CARGO 4 |FIRE CARGO AFT |AFT CARGO 4 LP A | | |LP A | | | ................................................................... |DM7905 |AFT CARGO 4 |FIRE CARGO AFT |AFT CARGO 4 LP B | | |LP B | | | 2.............…..............….................…..................1
S 865-146
(9) Close these circuit breakers on the P7 panel:
(a)
7H14, CARGO SMOKE DETECT LWR A
(b)
7H15, CARGO SMOKE DETECT LWR B
S 735-265
(10)
Do the Ejector Test.
(11)
Do the Airflow Test for the Forward and Aft Cargo Sampling Tube.
S 735-266
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
26-16-00
ALL ú ú 10 Page 515 ú Oct 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
S 735-267
(12)
Do the Vacuum Supply Tube Replacement Test.
S 735-268
(13)
Do the Heater Check.
S 735-269
(14)
Do the Smoke Test.
TASK 26-16-00-735-256
4. Ejector Test
A. Standard Tools and Equipment
(1)
Vacuum Gauge - hand held, 0-180 inches of water (0-15 inches of mercury)
B.
References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 36-00-00/201, Pneumatic System
(3)
AIPC 26-16-01, Fig. 1
(4)
AIPC 26-16-01, Fig. 2
(5)
WDM 26-16-11 through WDM 26-16-16
C.
Access
(1)
Location Zones 122 Forward Cargo Compartment forward Half RH 142 Aft Cargo Compartment RH 221 Control Cabin LH 222 Control Cabin RH
D.
Prepare for System Test
S 865-248
(1) Open these circuit breakers on the main power distribution panel, P6, and attach DO-NOT-CLOSE tags:
(a)
6H1, FIRE EXTINGUISHER ENG 1&3 B
(b)
6H2, FIRE EXTINGUISHER ENG 1&3 A
(c)
6H3, FIRE EXTINGUISHER ENG 2&4 B
(d)
6H4, FIRE EXTINGUISHER ENG 2&4 A
(e)
6H5, FIRE EXTINGUISHER APU
(f)
6H6, FIRE EXTINGUISHER LOWER CARGO
(g)
6H7, FIRE SW UNLOCK
S 865-249
(2) Close these circuit breakers on the overhead circuit breaker panel, P7:
(a)
7F23, LANDING GEAR DSP & CONT ALTN
(b)
7H14, CARGO SMOKE DETECT LWR A
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
26-16-00
ALL ú ú 16 Page 516 ú Oct 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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