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┃   FLIGHT CREW OPERATING MANUAL ┃                            ┃          ┃          ┃
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SCHEMATICS
SAFETY
VALVES
The same
as for
CPC1
CCM ALL
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┃I  ~-~ A318                     ┃AIR COND/PRESS/VENT ┃1.21.20     P 3   ┃
┃ aw aw ,, ~L,~ A319             ┃                    ┃                  ┃
┃ Lii,~ A320                     ┃                    ┃                  ┃
┃                                ┃                    ┣━━━━┳━━━━┫
┃      A~7-~'M" A321             ┃    PRESSURIZATION  ┃SEQ 001 ┃REV 33  ┃
┃   FLIGHT CREW OPERATING MANUAL ┃                    ┃        ┃        ┃
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CABIN PRESSURE CONTROLLERS
Two identical, independent, digital controllers automatically control the system, by
maintaining the proper cabin pressure. They receive signals from the Air Data Inertial
Reference System (ADIRS), the Flight Management and Guidance Computer (FMGC), the
Engine Interface Unit (EIU), and the Landing Gear Control Interface Unit (LGCIU).
When the system is in automatic or semi-automatic mode, one controller is active, the
other is on standby.
The controllers also generate signals for the Electronic Centralized Aircraft Monitoring
(ECAM).
For operation in manual mode, each controller has a backup section, which is powered by
an independent power supply in the controller N~I position. This section also has a
pressure sensor that generates the cabin altitude and pressure signal for the ECAM, when
MAN mode is selected.
The controllers communicate with each other via a cross-channel link.
OUTFLOW VALVE
The outflow valve is on the right-hand side of fuselage, behind the aft cargo compartment
and below the flotation line.
The outflow valve assembly consists of a flush, skin-mounted, rectangular frame, carrying
inward and outward opening flaps linked to the actuator. The actuator contains the drives
of the two automatic motors and the manual motor. Either of two automatic motors
operates the valve in automatic mode, and the manual motor operates it in manual mode.
In automatic mode, the operating controller signals the position of the valve to the ECAM.
In manual mode, the backup section of the N~ 1 controller signals the position of the valve
to the ECAM.
     Note : When the RAM AIR pushbutton is ON, and/kp is below I psi, the system drives the
R        outflow valve about 50 % open if it is under automatic control. If the system is under
R        manual control, the outflow valve does not automatically open, even flap is below
R         I psL
SAFETY VALVES
Two independent pneumatic safety valves prevent cabin pressure from going too high (8.6
psi above ambient) or too low (0.25 psi below ambient).
They are located on the rear pressure bulkhead, above the flotation line.
CCM ALL
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┃                                ┃                            ┃1.21.20     P 4       ┃
　
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本文鏈接地址：AIRBUS A320 Flight Crew Operating Manual1(106)