AIR COND Flashcards
HOW MANY PACKS
AND AIR SOURCES
2 PACKS
3 SOURCES
ENGINES
APU
HP GND AIR UNITS
PACK VALVES
TWO PACK VALVES PER PACK
THEY REGULATE THE QTY OF HOT BLEED AIR THAT FLOWS INTO EACH PACK
ROLE OF THE PACK
PROVIDE COLD AIR BY COOLING HOT BLEED AIR
BOTH PACKS OPERATE AUTO
AND INDEPENDENTLY OF EACH OTHER
EACH PACKS CONTAINS:
1 HEAT EXCHANGER USING EXTERNAL AIR
2 COOLING UNITS ACMs AIR CYCLE MACHINES
IF BOTH ACMs FAIL BLEED AIR IS COOLED BY HEAT EXCHANGER ONLY
THE PACK OPERATES IN BYPASS MODE
ECAM
REGUL
REFERS TO ACMs
WHAT CONTROLS PACK AND RELATED PACK VALVES
1 PACK CONTROLLER CONTROLS EACH PACK AND ITS RELATED PACK VALVES
PACK CONTROLLERS HAVE HOW MANY CHANNELS?
TWO INDEPENDENT CHANNELS
EACH IF THESE CHANNELS CAN CONTROL ONE ENTIRE PACK
IF BOTH CHANNELS FAIL THE PACK IS LOST
WHEN WILL PACK CONTROLLERS BE SHOWN ON BLEED SD
NOT NORMALLY SHOWN
ONLY WHEN ONE OR MORE CHANNELS FAIL BOTH PACK CONTROLLERS WILL BE SHOWN
THE ROLE OF THE MIXER UNIT
COLD AIR FROM PACKS IS COMBINED WITH RECYCLED COCKPIT AND CABIN AIR IN THE MIXER UNIT
PACKS AND MIXER UNIT ON BLEED AND COND SD
ON GND LP GND AIR CONNECTS TO
CONNECTED TO MIXER UNIT
NOT SHOWN ON SD
PRIMARY VENT FANS
4 VENTILATION FANS
REFERRED TO AS PRIMARY FANS
NOT NORMALLY ON COND SD UNLESS 1 FAILS
SECONDARY VENT FANS
9 SECONDARY FANS
BLOW AIR FROM UPPER DECK AND RECIRCULATE IT IN THE UPPER AND MAIN DECKS
NOT SHOWN SD
18 CONTROLLABLE ZONES
COCKPIT
7 UPPER DECK
8 MAIN DECK
2 CARGO ZONES BULK FWD
CREW REST COMPARTMENT
HOW IS EACH ZONE TEMP SET
ADJUSTED BY ADDING HOT BLEED AIR TO AIR FROM THE MIXER UNIT
HOT AIR IS ADDED VIA TWO HOT AIR VALVES AND ONE TRIM AIR VALVE PER CABIN ZONE
WHAT CONTROLS THE TEMP OF EACH ZONE
CONTROLLED BY TEMP CONTROLLER
TWO INDEPENDENT CHANNELS
EACH CHANNEL CAN CONTROL ALL ZONES
ONLY SHOWN COND SD IF A FAULT
BOTH PACKS FAIL
MIXER UNIT CAN RECEIVE AIR DIRECTLY FROM OUTSIDE VIA TWO EMERG RAM AIR INLETS
PACK VALVE WILL AUTO CLOSE
NOT SUFF UPSTREAM PRESS
ENG FIRE SW PRESSED
X BLEED VALVE CLOSED
BOTH PACK VALVES WILL AUTO CLOSE
RELATED PACK PB SET TO OFF
RELATED PACK OVERHEATS AND AIRCRAFT ON GND
ONE ONSIDE ENG STARTS AND X BLEED VALVES CLOSED
ALL PACK VALVES AUTO CLOSE
DITCHING PB SW ON
ONE DOOR OPENED AND AT LEAST ONE ENG RUNNING
ANY ENG STARTS AND X BLEED VLV OPENED
ENG FIRE PBSW OF ANY ENG PRESSED AND X BLEED VLV OPENED
AIR COND CONTROLS LOCATED
OVERHEAD PANEL
C FWD
AIR FLOW SEL
CONTROLS THE REGULATION OF THE PACK VLVS TO OBTAIN THE DESIRED QTY OF AIRFLOW IN THE AIRCRAFT
AIRFLOW SEL
NORM
AIRFLOW AUTO ADJUSTED ACCORDING TO VALUE SET IN FMS FOR POB
AIRFLOW SEL
MAN
DEFAULT AIRFLOW VALUE
AIRFLOW SEL
LO
80% MAN
AIRFLOW SEL HI
120% MAN
PACK PBSW CONTROLS
ITS RELATED PACK AND PACK VLVS
HOT AIR PBSW CONTROLS
ITS RELATED HOT AIR VLV
SHOWN BLEED AND COND SD
CABIN KNOB
BOTH COCKPIT AND CABIN SHOWN
CRUISE SD
IF PURS SEL EACH CABIN ZONE TEMP CAN BE SET AT FAP
RAM AIR PBSW
CONTROLS EMERG RAM INLETS
SHOWN BLEED SD AND COND SD
VENT CONTROL PANEL
CAB FANS PBSW
CONTROLS PRIMARY AND SECONDARY FANS
ONLY PRIMARY ON COND SD FOR FAILURE ONLY
AIR COND CARGO
AIRCON AND VENT SYS OF FWD AND BULK CARGO COMPT FULLY AUTO
AFT CARGO COMPT NOT AIRCOND BUT IS VENT BY THE BULK CIRCUIT
BULK
INLET ISOLATION VLV
AIR FROM CABIN ENTERS INTO BULK THROUGH INLET ISOLATION VLV
AN EXTRACTION FAN EXTRACTS AIR VIA OUTLET ISOLATION VLV IN AFT CARGO WHICH IS DISCHARGED OVERBOARD THROUGH THE OUTFLOW VLVS
BULK CARGO ISOL VLV
REFERS TO INLET AND OUTLETS ISOLATION VLVS FOR ECAM
EXTRACTION FANS ON COND SD ONLY FOR FAILURE
BULK CARGO HEATING
IF NECESS TO OBTAIN DESIRED TEMP
ELECTRIC HEATER HEATS THE AIR THAT FLOWS INTO THE BULK CARGO COMPT
HEATER ONLY SHOWN COND SD FOR FAILURE
FWD CARGO COMPT
AS PER BULK
AIR FLOWS FROM CABIN INTO FWD CARGO VIA SEVERAL INLET ISOLATION VLVS
NOT SHOWN COND SD
EXTRACTION FAN EXTRACTS AIR VIA OUTLET ISOLATION VLV WHICH IS DISCHARGED THROUGH THE OUTFLOW VLVS
ECAM
FWD CARGO ISOL VALVES REFERS TO ABOVE
EXTRACTION FAN ONLY COND SD FOR FAILURE
FWD CARGO COMPT TEMP ADJ
BY ADDING HOT AIR FROM BLEED SYS TRIM AIR VLV OR COLD AIR FROM MIXER UNIT
TRIM AIR VLV ONLY SHOWN COND SD FOR FAILURE
CARGO AIR COND PANEL
LOCATION
OVERHEAD
R FWD
CONTROL PANEL
BULK ISOL VALVES
FWD IS SAME
PBSW CONTROLS ITS RELATED BULK INLET AND OUTLET ISOLATION VLVS
CARGO CONTROL PANEL
TEMP REGUL
ADJ TEMP
BULK HEATER PBSW
CONTROLS RELATED HEATER
FWD AND BULK TEMP SHOWN WHICH SD
CRUISE SD ALSO
PACK PBSW FAULT
FAILURE HAS BEEN DETECTED IN THE PACK SYS WITH ECAM
IN THE CASE OF OVERHEAT THE FAULT LGT REMAINS ON AS LONG AS THE FAILURE CONDITION EXISTS
