SEE B OUTFLOW VALVES PRESSURIZATION
SEE A RAM AIR INLETS SEE A PACK 1 AIR CONDITIONING EQUIPMENT BAY PACK 2 SEE C AIR MANIFOLD CONDITIONED
MANIFOLD BLEED AIR
EXITS RAM AIR
PACK 3
INLETS RAM AIR A AIR CONDITIONING EQUIPMENT BAY RAM AIR INLETS AND
Figure 1 (Sheet 1) Air Conditioning Equipment Location
D09119
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
21-00-00
ALL ú ú 01F Page 2 ú Feb 10/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
FORWARD MAIN DECK
CARGO RISERS
AFT MAIN DECK
CARGO RISER
PRESSURIZATION OUTFLOW VALVE
(EXAMPLE)
B
TRIM
AIR
SYSTEM
(REF)
TO AFT CARGO COMPARTMENT
FLIGHT DECK,
TO FORWARD UPPER DECK, AND
CARGO COMPARTMENT CREW REST AREA RISERAFT MAIN DECK CARGO RISERS
TRIM AIR SYSTEM (REF) CONDITIONED AIR MANIFOLD
C
Air Conditioning Equipment Location
Figure 1 (Sheet 2)
D09145
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
21-00-00
ALL ú ú 01F Page 3 ú Feb 10/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
FORWARD MAIN DECK DISTRIBUTION DUCT
UPPER DECK AND CREW REST AREADISTRIBUTION DUCT
AFT MAIN DECK DISTRIBUTION DUCT
FLIGHT DECK DISTRIBUTION DUCT
PACK 3 OUTLET
LOWER FORWARD CARGO DISTRIBUTION DUCTS
PACK 2 OUTLET
LOWER AFT CARGO DISTRIBUTION DUCTS
Air Conditioning Equipment Location Figure 1 (Sheet 3)
D09214
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
21-00-00
ALL ú ú 01F Page 4 ú Feb 10/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
COOLING SYSTEM
Air Conditioning Equipment Location
Figure 1 (Sheet 4)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
21-00-00
ALL ú ú 01F Page 5 ú Feb 10/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
D09254
A
747-400
MAINTENANCE MANUAL
H. Electrical/electronic (E/E) equipment generates heat which must be dissipated by forced air circulation cooling. An independent equipment cooling system provides cooling air for the flight deck panels and the E/E equipment in the forward and center equipment bays. A fan in the forward cargo compartment left sidewall draws air through a screen and air cleaner and exhausts it into the E/E equipment. A second fan draws air from the E/E equipment and exhausts the air either into the forward cargo compartment or overboard. 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址:747-400 AMM 飞机维护手册 空调 AIR CONDITIONING 1(6)