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Air Conditioning Panel And Cabin Pressurization Panel
Pressurization Panel/Motor 3
Self Examination
TMUPREB02 LEVEL 3
EFFECTIVITY 21-31-00 Page 1
Sep 30/99
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 21 AIR CONDITIONING
UF94200
EFFECTIVITY Page 179
ALL
PRESSURIZATION - SYSTEM CONTROL INTERFACES
ENGINE INTERFACE UNIT (EIU)
Each Engine Interface Unit sends a thrust lever angle
associated with an N2 signal to both controllers to
initiate the prepressurization and the pressurization
sequences.
Signals: thrust lever angle in take-off position (MAX
CONT or FLX detent) and N2 at or above idle, used for
prepressurization and pressurization sequences.
LANDING GEAR CONTROL INTERFACE UNIT (LGCIU)
Each Landing Gear Control Interface Unit sends a
flight/ground signal to both controllers to initiate
prepressurization, the pressurization and the
depressurization sequences.
Signal: ground/flight, used for prepressurization,
pressurization, depressurization sequences and system
transfer.
AIR DATA INERTIAL REFERENCE UNIT (ADIRU)
Each Air Data Inertial Reference Unit sends the static
pressure and the barometric correction signals to both
controllers for pressure control.
Signals: static pressure, baro correction and ADIRU
validity, used for all sequences and priority
selection.
ADIRU 1, 2, 3 : controller 1
ADIRU 2, 1, 3 : controller 2
FLIGHT MANAGEMENT AND GUIDANCE COMPUTER (FMGC)
Each Flight Management and Guidance Computer sends
cruise flight level and landing field elevation data
to both controllers.
Signals: cruise flight level, landing field elevation,
used for pressurization profile.
MOTORS
A discrete signal from the active controller will
select the corresponding motor ( enable signal ) while
outflow valve positioning and monitoring signals are
transmitted by RS 422 buses.
Signals in AUTO MODE: "enable signal" to motor in
control, outflow valve positioning and monitoring.
Signals in MANUAL MODE: feedback position from motor
3 is sent to the controller 1.
CONTROLLER 1 / CONTROLLER 2
Discrete signals between both controllers ensure
controller transfer.
Signal: system 1 or 2 active, used for controller
transfer.
TMUPREB02-T01 LEVEL 3
EFFECTIVITY 21-31-00 Page 2
Sep 30/99
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 21 AIR CONDITIONING
UF94200
EFFECTIVITY Page 180
ALL
PRESSURIZATION - SYSTEM CONTROL INTERFACES
TMUPREB02-P01 LEVEL 3
EFFECTIVITY 21-31-00 Page 3
Sep 30/99
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 21 AIR CONDITIONING
UF94200
EFFECTIVITY Page 181
ALL
PRESSURIZATION - SYSTEM CONTROL INTERFACES
AIR CONDITIONING PANEL AND CABIN PRESSURIZATION PANEL
The position of the pressure panel switches and
emergency ram air switch is transmitted to both
controllers.
CABIN PRESS PANEL
Signals: ditching, landing field elevation, manual
mode selection, used for ditching and manual operation.
AIR COND PANE
Signal: emergency ram air inlet selection, used for
outflow valve half opening.
PRESSURIZATION PANEL / MOTOR 3
Motor 3 is controlled by a discrete signal directly
sent by the CABIN PRESS panel.
Signal: motor 3 control, used for manual mode.
TMUPREB02-T01 LEVEL 3
EFFECTIVITY 21-31-00 Page 4
Sep 30/99
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 21 AIR CONDITIONING
UF94200
EFFECTIVITY Page 182
ALL
SELF EXAMINATION
Which interfaces are used for prepressurization and
pressurization sequence initialization?
A - EIU and ADIRU.
B - EIU and LGCIU.
C - EIU and FMGC.
Motor 3 is controlled from:
A - Controller 1.
B - The AIR COND panel.
C - The CABIN PRESS panel.
TMUPREB02 LEVEL 3
EFFECTIVITY 21-31-00 Page 5
Sep 30/99
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 21 AIR CONDITIONING
UF94200
EFFECTIVITY Page 183
ALL
THIS PAGE INTENTIONALLY LEFT BLANK
TMUPREB02 LEVEL 3
EFFECTIVITY 21-31-00 Page 6
Sep 30/99
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 21 AIR CONDITIONING
UF94200
EFFECTIVITY Page 184
ALL
21 - AIR CONDITIONING
21-31-00 PRESSURIZATION -
SYSTEM MONITORING INTERFACES
CONTENTS:
Flight Warning Computer (FWC)
System Data Acquisition Concentrator (SDAC)
　
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