FLT COMPT
L RECIRC FAN SWITCH/LIGHT, YNRS1
R RECIRC FAN SWITCH/LIGHT, YNRS2
AIR CONDITIONING CONTROL PANEL, M10193
A
Component Location
Figure 102 (Sheet 1)
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21-20-00
ALL ú
ú 02 Page 103
ú Jun 15/86
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A
757
FAULT ISOLATION/MAINT MANUAL
AFT CARGO
DOOR, 822
AFT EQUIP/LAV/
GALLEY VENT FANS
SEE B
AIR CONDITIONING
SYSTEM OUTLETS (TYP)
SEE C SHT 3
FWD CARGO
DOOR, 821
AFT EQUIP/LAV/GALLEY
VENT FAN 1, B16 AFT EQUIP/LAV/GALLEY
VENT FAN 2, B15
AFT EQUIP/LAV/GALLEY
VENT CHECK VALVE
AFT EQUIP/LAV/GALLEY VENT FANS (VIEW LOOKING AFT)
B
Component Location Figure 102 (Sheet 2)
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21-20-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
FAULT ISOLATION/MAINT MANUAL
RIGHT RECIRCULATION SYSTEM SEE E
GALLEY FWD CARGO VENTILATION DOOR, 821 OVERHEAD FILTER (TYP) STOWAGE
SEE G SHT 4
BIN (REF)
MAIN DISTRIBUTION MANIFOLD
SEE DAIR CONDITIONING LEFT RECIRCULATION SYSTEM AIR FAN, B13 OUTLET AND LEFT RECIRCULATION
AIR CHECK VALVE
SIDEWALL PANEL (REF) SEE F SHT 4
AIR CONDITIONING SYSTEM OUTLETS (TYP)
C FROM SHT 2
MAIN DISTRIBUTION HIGH MANIFOLD EFFICIENCY RIGHT RECIRCULATION
FILTER
AIR CHECK VALVE RIGHT MAIN RECIRCULATION DISTRIBUTION AIR FAN, B14 MANIFOLD
HIGH
PREFILTER EFFICIENCY FILTER
PREFILTER
193DL CONDITIONED AIR CHECK VALVE
AIR CONNECTOR CONDITIONED GROUND (2 PLACES FWD 1 ) FWD INBD
MAIN DISTRIBUTION MANIFOLD RIGHT RECIRCULATION SYSTEM
D E
1
GUN 001-004 WITH SB 21-51; AND GUN 005-999
Component Location Figure 102 (Sheet 3)
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21-20-00
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757 FAULT ISOLATION/MAINT MANUAL
LEFT RECIRCULATION AIR FAN, B13LEFT RECIRCULATION AIR CHECK VALVE FORWARD EQUIPMENT COOLING SUPPLY FANS (REF) FWD
LEFT RECIRCULATION AIR FAN
F
CEILING STRUCTURE (REF)
GALLEY VENTILATION FILTER
GRILLE
(REF)
GALLEY VENTILATION FILTER (TYP)
G
Component Location (Details from Sht 3) Figure 102 (Sheet 4)
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21-20-00
ALL ú ú 04 Page 106 ú Mar 15/85
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 FAULT ISOLATION/MAINT MANUAL
Component Location
Figure 102 (Sheet 5)
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21-20-00
ALL ú ú 02 Page 107 ú May 28/99
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757 MAINTENANCE MANUAL
MAIN DISTRIBUTION MANIFOLD - DESCRIPTION AND OPERATION
______________________________________________________
1. General (Fig. 1)_______
A. The main distribution manifold consists of a mix manifold, ducting, and a ground-air-service connector. The mix manifold is supplied with cold air from the air conditioning packs (Ref 21-51-00) and warm air from the recirculation system (Ref 21-25-00). Then it mixes the air and distributes it to the passenger compartment, lavatories, and the galleys (Ref 21-23-00). The mix manifold also provides humidity control by extracting water from the combined airflow.
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