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The cabin is controlled to an altitude of 7,230 feet at an airplane altitude of
51,000 feet. The CPCS controls cabin rate at 500 ft/min cabin climb and 300 ft/min
cabin descent (Normal Mode) and up to a 800 ft/min descent rate (High Mode) in
order to accommodate the maximum normal airplane operating performance.
The Pressurization System control panel is located on the overhead panel.
ANTI-ICE SYSTEM
The Anti-Ice System is covered in Chapter 3.
For Training Purposes Only
Sept 04
13-3
P I LOT T R A I N I N G GU I D E
INTEGRATED AIR MANAGEMENT SYSTEM
DESCRIPTION
BLEED AIR SYSTEM
The pneumatic system supplies compressed air for air-conditioning and pressurization,
engine starting and ice and rain protection. The pneumatic air supply normally comes
from the engines in-flight, and the APU or a high-pressure ground air supply unit on
the ground.
EICAS
ANTI-ICING
SYSTEM
ENGINE
STARTING
AIR
CONDITIONING
SYSTEM
BLEED
AIR
SYSTEM
GROUND
SOURCE
DISTRIBUTION
INDICATING
ENGINES
APU
BLEED
MANAGEMENT
CONTROLLER
GX_13_001
P I LOT T R A I N I N G GU I D E
INTEGRATED AIR MANAGEMENT SYSTEM
13-4 For Training Purposes Only
Sept 04
The BLEED/AIRCOND/ANTI-ICE and the PRESSURIZATION panels are located
on the overhead panel. Synoptics are available on the SYSTEMS electronic display
unit.
PACK CONTROL
L MAN
TEMP
R MAN
TEMP
BLEED/AIR COND
TEMPERATURE
FWD CABIN
NORM
MAN
LO HIGH
L ENG BLEED R ENG BLEED
ANTI-ICE
L COWL WING R COWL
WING X-BLEED
COLD HOT
APU BLEED
AUTO
CLSD OPEN
XBLEED
L PACK R PACK
FAIL
OFF
FAIL
OFF
RECIRC TRIM AIR
OFF OFF
AUTO
OFF ON
AUTO
OFF ON
OLD HO
RAM AIR
AUX PRESS
HOT
COLD
HOT
COLD
ON
ON
AUTO
OFF ON
AUTO AUTO AUTO
OFF ON OFF ON OFF ON
AUTO
OFF ON
AFT CABIN
COLD HOT
COCKPIT
COLD HOT
GX_13_002
AIR CONDITIONING SYNOPTIC
PRESSURIZATION PANEL
BLEED/AIR CONDITIONING/ANTI-ICE PANEL
BLEED / ANTI-ICE
APU
LP
AIR
COND
HP
L
LP
HP 26
PSI
26
PSI
R
BLEED/ANTI-ICE SYNOPTIC
AIR CONDITIONING
RAM AIR
TRIM AIR
BLEED
TRIM
AIR
BLEED
12 °C 15 °C
23 °C 23 °C 23 °C
L PACK R PACK
CKPT
20°C
FWD
20°C
AFT
23°C
20°C 20°C 23°C
OUTFLOW VALVE
MAN PRESSURIZATION AUTO
MAN ALT LDG ELEV RATE
1
CLOSED
2
CLOSED
AUTO/
MAN
MAN
EMERG
DEPRESS
ON
DITCHING
ON
MAN
FMS
UP
DN
HIGH
NORM
UP
D F DN N
For Training Purposes Only
Sept 04
13-5
P I LOT T R A I N I N G GU I D E
INTEGRATED AIR MANAGEMENT SYSTEM
Bleed selection is available on the Bleed/Air Conditioning/Anti-Ice panel. The bleed
selections are as follows:
L ENG BLEED R ENG BLEED
APU BLEED
AUTO
CLSD OPEN
XBLEED
AUTO
OFF ON
AUTO
OFF ON
AUTO
OFF ON
L (R) ENG BLEED Selector
OFF
AUTO
ON
• – Selects engine bleed air pressure regulating
valve (PRV) and high pressure valve (HPV) closed.
• PRV and HPV operation (open/close) is
controlled by the BMC.
• Selects PRV open and HPV to open when high
pressure selected by BMC. Selects PRV open and HPV
closed when low pressure selected by BMC.
–
–
XBLEED Selector
CLSD
AUTO
OPEN
• Selects crossbleed valve closed.
• Crossbleed valve operation
(open/close) is controlled by the BMC.
• Selects crossbleed valve open and
the affected side PRV is commanded to
close, controlled by BMC.
–
–
–
APU BLEED Selector
OFF
AUTO
ON
• Selects LCV off.
• LCV operation (open/close) is
controlled by the BMC through the APU
FADEC (see chapter 4, AUXILIARY
POWER UNIT, for more information)
• Selects LCV to open. BMC will
reposition the other valves as required to
respect bleed air rules.
–
–
–
GX_13_003
P I LOT T R A I N I N G GU I D E
INTEGRATED AIR MANAGEMENT SYSTEM
13-6 For Training Purposes Only
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