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RAM AIR pushbutton must be set to ON.
When set to ON, and if DITCHING is not selected, the
EMERGENCY RAM AIR INLET FLAP opens.
The flap, installed between LP GND CONNECTION and RAM
AIR INLET, closes one side of the duct when air is
supplied from the other side. The check valve stays
closed.
The aircraft must descend to less than 10000 ft.
When the cabin to ambient air differential pressure
is less than 1 psi, the pressure controller half opens
the outflow valve.
The air then goes through the check valve to the mixing
unit.
TMUTEMF02-T01 LEVEL 3
EFFECTIVITY 21-55-00 Page 2
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_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 21 AIR CONDITIONING
UF94200
EFFECTIVITY Page 68
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ZONE TEMPERATURE CONTROL - EMERGENCY RAM AIR INLET OPERATION
TMUTEMF02-P01 LEVEL 3
EFFECTIVITY 21-55-00 Page 3
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MECHANICS / ELECTRICS & AVIONICS COURSE 21 AIR CONDITIONING
UF94200
EFFECTIVITY Page 69
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THIS PAGE INTENTIONALLY LEFT BLANK
TMUTEMF02 LEVEL 3
EFFECTIVITY 21-55-00 Page 4
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_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 21 AIR CONDITIONING
UF94200
EFFECTIVITY Page 70
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21 - AIR CONDITIONING
21-50-00 ZONE TEMPERATURE CONTROL -
PACK COMPONENTS
CONTENTS:
Pack Controllers
Air Conditioning Packs
Flow Control Valve (FCV)
Flow Control Valve Removal/Installation
ByPass Valve (BPV)
Ram Air Inlet (RAI) Actuator
Anti-Ice Valve (AIV)
Pack Downstream Check Valve
Air Cycle Machine (ACM)
Primary Heat Exchanger
Main Heat Exchanger
Reheater
Condenser
Water Extractor
Water Injector
Ozone Filter (Option)
TMUTEMN0A LEVEL 3
EFFECTIVITY 21-50-00 Page 1
Jun 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 21 AIR CONDITIONING
UF94200
EFFECTIVITY Page 71
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ZONE TEMPERATURE CONTROL - PACK COMPONENTS
PACK CONTROLLERS
IDENTIFICATION
FIN: 7HM, 27HM
LOCATION
ZONE: 121, 122
COMPONENT DESCRIPTION
PACK CONTROLLER FUNCTION PRIMARY SECONDARY
Flow setting modulation yes no
Pack temp. control from zone
controller demand yes yes
ByPass Valve control yes yes
Ram air flow modulation yes no
OVHT detection and indication yes yes
Pack temp control
to 15°C (59°F) no yes
Failure analysis yes yes
BITE and info transmission
to zone controller yes no
ECAM indications no yes
Anti-Ice Valve control yes yes
Data handling yes yes
TMUTEMN0A-T01 LEVEL 3
EFFECTIVITY 21-50-00 Page 2
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_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 21 AIR CONDITIONING
UF94200
EFFECTIVITY Page 72
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ZONE TEMPERATURE CONTROL - PACK COMPONENTS - PACK CONTROLLERS
TMUTEMN0A-P01 LEVEL 3
EFFECTIVITY 21-50-00 Page 3
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_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 21 AIR CONDITIONING
UF94200
EFFECTIVITY Page 73
ALL
ZONE TEMPERATURE CONTROL - PACK COMPONENTS
AIR CONDITIONING PACKS
IDENTIFICATION
FIN: 10HM, 11HM
LOCATION
ZONE: 191, 192
COMPONENT DESCRIPTION
The air conditioning packs are identified as PACK 1
and PACK 2 depending on the pneumatic manifold to which
they are connected.
TMUTEMN0A-T02 LEVEL 3
EFFECTIVITY 21-50-00 Page 4
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_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 21 AIR CONDITIONING
UF94200
EFFECTIVITY Page 74
ALL
ZONE TEMPERATURE CONTROL - PACK COMPONENTS - AIR CONDITIONING PACKS
TMUTEMN0A-P02 LEVEL 3
EFFECTIVITY 21-50-00 Page 5
Jun 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 21 AIR CONDITIONING
UF94200
EFFECTIVITY Page 75
ALL
ZONE TEMPERATURE CONTROL - PACK COMPONENTS
FLOW CONTROL VALVE
IDENTIFICATION
FIN: 8HB, 11HB
LOCATION
ZONE: 182, 191
COMPONENT DESCRIPTION
The flow control valves have two functions in the air
conditioning system. Their primary function is to
control the amount of air flowing through the system.
The secondary function is to provide an automatic or
manually selectable shut-off function.
TMUTEMN0A-T03 LEVEL 3
EFFECTIVITY 21-50-00 Page 6
Jun 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
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