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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
PACK 2 CATALYTIC
OZONE CONVERTER
(ABOVE PACK 2
LEFT WING WATER SEPARATOR)
ISOLATION
VALVE PACK 2 WATER
PACK 1 FLOW CONTROL PACK 1 WATER SEPARATOR
AND SHUTOFF VALVE, AND SEPARATOR PACK 2 HEAT
PACK DUMP (SMACCS) VALVE SEE E EXCHANGER PACK 1 AIRFLOW
SEE D SENSOR
PACK 1 CATALYTIC SEE F
OZONE CONVERTER PACK
PACK 1 HEAT OUTPUT
EXCHANGER DUCTS
SEE B PACK 2 FLOW
CONTROL AND
PACK 1 WATER SHUTOFF VALVE
ASPIRATOR
SEE G
PACK 2 WATER
PNEUMATIC ASPIRATOR
MANIFOLD
RIGHT WING
ISOLATION
VALVE
PNEUMATIC MANIFOLD PACK 3 CATALYTICWATER LINE OZONE CONVERTER
TO ASPIRATOR PACK 3 WATER SEPARATOR PACK 1 AIR CYCLE
PACK 3 FLOW CONTROLMACHINE (ACM) AND SHUTOFF VALVE, AND(EXAMPLE)
PACK DUMP (SMACCS) VALVESEE C
PACK 2 ACM PACK 3 WATER
PACK 3 ACM ASPIRATOR
AIR CONDITIONING EQUIPMENT BAY
Air Conditioning Pack System - Component Location
Figure 2 (Sheet 2)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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C23362
A
747-400 MAINTENANCE MANUAL
RAM AIR INLET DUCT
HEAT EXCHANGER
RAM AIR EXIT DOORS
COMPRESSOR BYPASS
B
CHECK VALVE
COMPRESSOR
COMPRESSOR DISCHARGE
OUTLET TEMP BULB TURBINE OUTLET
(CONDITIONED AIR)
COOLING AIR
CHECK VALVE
RAM AIR
INLET DUCT
TO HEAT EXCHANGER
COMPRESSOR DISCHARGE OVERHEAT SWITCH
COMPRESSOR INLET FAN DIFFUSER
TURBINE AIR CYCLE AND INLET
BY-PASS MACHINE HOUSING
INLET TURBINE INLET
C
Air Conditioning Pack System - Component LocationFigure 2 (Sheet 3)
C23372
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
MANUAL OVERRIDE/ POSITION INDICATOR
FLOW CONTROL AND PACK DISCHARGE
SHUTOFF VALVE PACK DISCHARGE TEMPERATURE SENSOR B
PACK DUMP (SMACCS) VALVE WATER TEMPERATURE SENSOR A
(PACKS 1 AND 3) SEPARATOR PACK DISCHARGE
OVERHEAT SWITCH
D
TO WATER ASPIRATOR
WATER SEPARATOR DRAIN
E
ASPIRATOR
AIR SUPPLY AIRFLOW
CONDITIONED SENSOR
AIR DUCT
WATER
ASPIRATOR
FROM WATER SEPARATOR DRAIN
F G
Air Conditioning Pack System - Component Location Figure 2 (Sheet 4)
C23495
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
PACK 2 WATER COLLECTOR
SEE H
FWD PACK 3 WATER COLLECTOR
SEE I
PACK 1 WATER COLLECTOR
SEE H
HEAT
EXCHANGER HEAT EXCHANGER
FLOW CONTROL AND
WATER
SHUTOFF VALVE
COLLECTOR
WATER COLLECTOR
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