A330-200/300 Air Conditioning Training Manual PDF

A330-200/300 DIFFERENCES FROM A318/A319/A320/A321 (CFM56/V2500) TRAINING MANUAL AIR CONDITIONING THIS MANUAL IS FOR TRAINING PURPOSES ONLY AND SHOULD NOT BE USED FOR ANY OTHER PURPOSE TH...

A330-200/300 DIFFERENCES FROM A318/A319/A320/A321 (CFM56/V2500) TRAINING MANUAL AIR CONDITIONING THIS MANUAL IS FOR TRAINING PURPOSES ONLY AND SHOULD NOT BE USED FOR ANY OTHER PURPOSE THESE NOTES ARE NOT UPDATED B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL AIR CONDITIONING Air Conditioning Line Maintenance Briefing (2)................. 2 MAINTENANCE PRACTICE AIR GENERATION/TEMP CONTROL & Air Conditioning MCDU Pages (2)......................... 170 RECIRCULATION Air Conditioning System Overview (3)....................... 24 Pack Air Flow Regulation D/O (3)........................... 26 Pack Temperature Control D/O (3).......................... 42 Emergency RAM Air Inlet D/O (3).......................... 62 Cockpit/Cabin Air Temperature Control D/O (3)................ 66 Air Recirculation and Management D/O (3)................... 88 COCKPIT/CABIN AIR DISTRIBUTION & VENTILATION Cockpit/CAB Air Distribution & VENT D/O (3)................ 96 Galley and Toilet Ventilation D/O (3)........................ 102 Aft Galley Heating D/O (3)............................... 106 CARGO COMPT VENTILATION/TEMPERATURE CONTROL FWD Cargo COMPT VENT/TEMP CTL SYS D/O (3)......... 116 AFT Cargo COMPT VENT D/O (3)........................ 118 Bulk Cargo COMPT VENT/Heating D/O (3)................. 120 PRESSURIZATION Pressurization System D/O (3)............................. 128 AVIONICS EQUIPMENT VENTILATION Avionics Equipment Ventilation D/O (3)..................... 144 G7508471 - G7UT0TU Avionics Eqpt. Ground Cooling D/O (option) (3).............. 152 AIR CONDITIONING BAY VENTILATION System D/O (3)......................................... 162 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) TABLE OF CONTENTS Nov 21, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES Page 11 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL AIR CONDITIONING LINE MAINTENANCE BRIEFING (2) GENERAL The air conditioning system maintains the air in the pressurized fuselage areas at the correct level of pressure, temperature and freshness. The pressurized areas are: - the cockpit, - the 6 zones of the passenger cabin, - the lavatories and galleys areas, - the crew rest compartments, when installed, - the avionics compartment, - the FWD, AFT and BULK cargo compartments. The air conditioning system also ensures the ventilation of the air conditioning bay, which is a non-pressurized area Air supply comes from the pneumatic system. Then, air is regulated in temperature by the temperature regulation sub-system. Correct level of air freshness in the pressurized areas and proper ventilation of the avionics equipment is ensured by the ventilation sub-system. The pressurization sub-system ensures a cabin altitude compatible with crew and passengers comfort. G7508471 - G7UT0TU - FM21B1000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) AIR CONDITIONING LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES Page 22 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM21B1000000003 GENERAL CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) AIR CONDITIONING LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES Page 33 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL AIR CONDITIONING LINE MAINTENANCE BRIEFING (2) TEMPERATURE CONTROL AND RE-CIRCULATION Bleed air coming from the pneumatic system is first regulated in flow by two pack flow control valves controlled by the Pack Controllers (PCs) according to flow demand inputs received from the AIR panel and the Zone Controller (ZC). Bleed air is then delivered to two independent air conditioning packs which ensure basic temperature regulation. Each air conditioning pack mainly consists of an Air Cycle Machine (ACM) and heat exchangers using ram air flowing through ram air inlet and ram air outlet flaps. Pack temperature regulation is controlled by the associated PC according to a temperature demand computed by the ZC based upon inputs received from the AIR panel and the Flight Attendant Panel (FAP). The cooled fresh air is then fed into a mixer unit. On ground, a ground cart supplies preconditioned air through Low Pressure (LP) ground connectors. In flight, if both packs are inoperative, an emergency ram air inlet will enable to maintain air supply to the cabin. The emergency ram air supply is directly controlled from the AIR panel. Fine temperature adjustment of air distributed in the pressurized zones is obtained by controlling the amount of hot air added to the air coming from the mixer unit. This is under the control of the ZC according to the temperature demand inputs received from the AIR panel and the FAP. G7508471 - G7UT0TU - FM21B1000000003 A part of cabin air is re-circulated by re-circulation fans through re-circulation valves in order to limit the bleed air demand on the engines. This re-circulated air is mixed with fresh air coming from the air conditioning packs into the mixer unit. Re-circulated air is also used for avionics ventilation purpose. The re-circulation fans and valves are controlled by the Ventilation Controller (VC). The re-circulation fans can be manually switched off from the VENTILATION panel. CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) AIR CONDITIONING LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES Page 44 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM21B1000000003 TEMPERATURE CONTROL AND RE-CIRCULATION CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) AIR CONDITIONING LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES Page 55 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL AIR CONDITIONING LINE MAINTENANCE BRIEFING (2) AVIONICS AND AIR CONDITIONING COMPT VENTILATION The two re-circulation fans used for cabin air re-circulation are also used as blower fans for the avionics equipment ventilation. The system carries out proper ventilation of the rack equipment and various panels in order to avoid any overheat condition. It operates continuously whenever aircraft electrical power is available. An extract fan extracts the air from the avionics equipment ventilation. Air is discharged either overboard through the overboard valve or under the cargo floor through the underfloor valve. When the overboard valve is open, the underfloor valve is closed and vice versa. The Avionics Equipment Ventilation Computer (AEVC) controls and monitors the avionics ventilation system. A manual override is possible from the VENTILATION panel. The air conditioning bay is ventilated on ground and in flight as soon as the air conditioning packs operate in order to avoid any overheat condition in this compartment. The air conditioning bay ventilation system uses RAM air through NACA inlet to cool down the compartment. The system is monitored by the AEVC. G7508471 - G7UT0TU - FM21B1000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) AIR CONDITIONING LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES Page 66 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM21B1000000003 AVIONICS AND AIR CONDITIONING COMPT VENTILATION CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) AIR CONDITIONING LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES Page 77 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL AIR CONDITIONING LINE MAINTENANCE BRIEFING (2) PRESSURIZATION The pressurization system makes sure that cabin altitude is safe and compatible with crew and passenger comfort. The cabin pressurization is done by controlling the amount of cabin air discharged overboard through two outflow valves located on the lower part of the aircraft fuselage. The system is controlled automatically by the Cabin Pressure Controllers (CPCs), or manually from the CABIN PRESS panel. When the aircraft is on ground, the Residual Pressure Control Unit (RPCU) forces both outflow valves to move to the fully open position, overriding the automatic control from CPCs and the manual control as well. This is to prevent any violent door opening in case of residual cabin pressure. Three safety valves are installed at the rear pressure bulkhead to prevent excessive positive or negative differential pressure. Due to the large volume of the fuselage, one negative-pressure relief valve helps the safety valves to prevent negative differential pressure. G7508471 - G7UT0TU - FM21B1000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) AIR CONDITIONING LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES Page 88 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM21B1000000003 PRESSURIZATION CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) AIR CONDITIONING LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES Page 99 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL AIR CONDITIONING LINE MAINTENANCE BRIEFING (2) DEACTIVATION OF THE TURBOFAN SUPPLY LINE WARNING: MAKE SURE THAT AIR IS NOT SUPPLIED TO THE AIR CONDITIONING SYSTEM FROM THE MAIN ENGINE, THE APU OR THE GROUND SOURCE. HOT COMPRESSED AIR CAN CAUSE INJURY TO STAFF. DO NOT TOUCH COMPONENTS UNTIL THEY ARE SUFFICIENTLY COOL TO PREVENT BURNING INJURIES. Make sure that all BLEED P/Bs are released out and tagged. Put a warning notice on the HP ground connector as well. Remove the applicable belly fairing panel(s) for access. Disconnect the supply line from the turbofan. Connect the supply line to the dummy connection on the structure and put blanking plugs on the disconnected line end. To deactivate the mechanic call horn you must have access to the left relay plate in the avionic bay; the dedicated pin of the turbofan must be disconnected from the terminal block on the left relay plate. Only turbofan monitoring is deactivated, but the related warning stays in view. The call horn remains functional for the other functions. NOTE: As an alternative, you can push the HORN RESET P/B on the G7508471 - G7UT0TU - FM21B1000000003 external power control panel. This panel is on the fuselage behind the NLG. This stops the mechanic call horn but you will hear it again after the subsequent flight if the fault continues. If no other deactivation servicing tasks have to be performed, the area can be closed. All tools, test and support used during this procedure should be removed. CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) AIR CONDITIONING LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 10 Page 10 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM21B1000000003 DEACTIVATION OF THE TURBOFAN SUPPLY LINE CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) AIR CONDITIONING LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 11 Page 11 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM21B1000000003 DEACTIVATION OF THE TURBOFAN SUPPLY LINE CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) AIR CONDITIONING LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 12 Page 12 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM21B1000000003 DEACTIVATION OF THE TURBOFAN SUPPLY LINE CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) AIR CONDITIONING LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 13 Page 13 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL AIR CONDITIONING LINE MAINTENANCE BRIEFING (2) If no other deactivation servicing tasks have to be performed, the area DEACTIVATION OF THE AVIONICS VENTILATION can be closed. All tools, test and support used during this procedure have OVERBOARD EXTRACT VALVE to be removed. Make sure that all engines are shut down and that the Full Authority Digital Engine Control GrouND PoWeR(FADEC GND PWR) P/Bs are not selected ON. CAUTION: DO NOT USE YOUR FINGERS TO SET THE SWITCHES TO THE "ON" POSITION. USE A STICK, AND BE VERY CAREFUL TO THE HANDLE THAT WILL ROTATE IF THE AVIONICS EQUIPMENT VENTILATION COMPUTER (AEVC) SET THE VALVE TO THE CLOSED POSITION. In case of a failure, the avionics ventilation overboard extract valve can be manually operated and deactivated in the open position for normal operation on the ground: - push to release the handle from its recess, - pull the handle out, - set the deactivation switch to OFF, - pull the handle further to engage the drive mechanism, - fold out the handle and turn clockwise until the main flap is Fully Open (FO), G7508471 - G7UT0TU - FM21B1000000003 - fold and latch the handle. For dispatch the valve must be deactivated with the main flap closed and the auxiliary flap open: - push to release the handle from its recess, - pull the handle out, - set the deactivation switch to OFF, - pull the handle further to engage the drive mechanism, - fold out the handle and turn it counterclockwise until the main flap is Fully Closed (FC) and the auxiliary flap is still open, - fold and latch the handle. CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) AIR CONDITIONING LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 14 Page 14 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM21B1000000003 DEACTIVATION OF THE AVIONICS VENTILATION OVERBOARD EXTRACT VALVE CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) AIR CONDITIONING LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 15 Page 15 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM21B1000000003 DEACTIVATION OF THE AVIONICS VENTILATION OVERBOARD EXTRACT VALVE CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) AIR CONDITIONING LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 16 Page 16 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM21B1000000003 DEACTIVATION OF THE AVIONICS VENTILATION OVERBOARD EXTRACT VALVE CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) AIR CONDITIONING LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 17 Page 17 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL AIR CONDITIONING LINE MAINTENANCE BRIEFING (2) DEACTIVATION OF THE PACK FLOW CONTROL VALVE WARNING: MAKE SURE THAT AIR IS NOT SUPPLIED TO THE AIR CONDITIONING SYSTEM FROM THE MAIN ENGINE, THE APU OR A GROUND SOURCE. HOT COMPRESSED AIR CAN CAUSE INJURY TO STAFF. DO NOT TOUCH COMPONENTS UNTIL THEY ARE SUFFICIENTLY COOL TO PREVENT BURNING INJURIES. Make sure that all BLEED P/Bs are released out and tagged. Put a warning notice on the HP and LP ground connectors as well. Release PACK 1 or 2 P/BSW to the OFF position, and open the applicable RESET Circuit Breaker (C/B) - PACK CONT 1 for pack 1 or PACK CONT 2 for pack 2. Remove the applicable belly fairing panel(s) for access. Remove the lockwire from the locking screw and move the locking screw from position 1 to position 2. Close the applicable RESET C/B. The area can be closed. All tools, test, support and warning notices used during this procedure should be removed. G7508471 - G7UT0TU - FM21B1000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) AIR CONDITIONING LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 18 Page 18 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM21B1000000003 DEACTIVATION OF THE PACK FLOW CONTROL VALVE CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) AIR CONDITIONING LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 19 Page 19 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM21B1000000003 DEACTIVATION OF THE PACK FLOW CONTROL VALVE CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) AIR CONDITIONING LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 20 Page 20 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL This Page Intentionally Left Blank G7508471 - G7UT0TU - FM21B1000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) AIR CONDITIONING LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 21 Page 21 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL AIR CONDITIONING LINE MAINTENANCE BRIEFING (2) PRESSURIZATION SYSTEM MAINTENANCE TIPS For the pressurization system, the automatic cabin pressure control system 1 or 2, may be inoperative provided cabin pressure indications are operative on ECAM in manual mode. The cabin pressure indications on ECAM are provided by the CPC fitted at the position of the system 1. G7508471 - G7UT0TU - FM21B1000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) AIR CONDITIONING LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 22 Page 22 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM21B1000000003 PRESSURIZATION SYSTEM MAINTENANCE TIPS CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) AIR CONDITIONING LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 23 Page 23 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL AIR CONDITIONING SYSTEM OVERVIEW (3) AIR CONDITIONING SYSTEM OVERVIEW Bleed air coming from the pneumatic system is first regulated in flow by two pack flow control valves controlled by the Pack Controllers (PCs) according to flow demand inputs received from the AIR panel and the Zone Controller (ZC). Bleed air is then delivered to two independent air conditioning packs, which make sure that basic temperature is regulated. Each air conditioning pack mainly has an Air Cycle Machine (ACM) and heat exchangers using ram air flowing through ram air inlet and ram air outlet flaps. Pack temperature regulation is controlled by the related PC according to a temperature demand computed by the ZC based upon inputs received from the AIR panel and the Flight Attendant Panel (FAP). The cooled fresh air is then fed into a mixer unit. On ground, a ground cart supplies preconditioned air through Low Pressure (LP) ground connectors. In flight, if both packs are inoperative, an emergency ram air inlet will help to maintain air supply to the cabin. The emergency ram air supply is directly controlled from the AIR panel. Fine temperature adjustment of air distributed in the pressurized zones is obtained by controlling the amount of hot air added to the air coming from the mixer unit. This air temperature adjustment is done under the control of the ZC according to the temperature demand inputs received G7508471 - G7UT0TU - FM21DL000000001 from the AIR panel and the FAP. A part of cabin air is re-circulated by re-circulation fans through re-circulation valves in order to limit the bleed air demand on the engines. This re-circulated air is mixed with fresh air coming from the air conditioning packs into the mixer unit. Re-circulated air is also used for avionics ventilation. The Ventilation Controller (VC) controls the re-circulation fans and valves The re-circulation fans can be manually switched off from the VENTILATION panel. CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) AIR CONDITIONING SYSTEM OVERVIEW (3) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 24 Page 24 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM21DL000000001 AIR CONDITIONING SYSTEM OVERVIEW CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) AIR CONDITIONING SYSTEM OVERVIEW (3) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 25 Page 25 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL PACK AIR FLOW REGULATION D/O (3) SYSTEM DESCRIPTION The system ensures: - pack air flow regulation and shut-off, - pack air flow measurement, - ozone filtering. G7508471 - G7UT0TU - FM21D1AIRFLOW03 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) PACK AIR FLOW REGULATION D/O (3) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 26 Page 26 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM21D1AIRFLOW03 SYSTEM DESCRIPTION CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) PACK AIR FLOW REGULATION D/O (3) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 27 Page 27 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL PACK AIR FLOW REGULATION D/O (3) SYSTEM DESCRIPTION (continued) FLOW CONTROL VALVE (FCV) The Flow Control Valve (FCV) is a modulating and shut-off butterfly valve. It is controlled by the Pack Controller (PC). The FCV is pneumatically actuated and: - electrically controlled through an electrical pressure regulator (normal mode), - pneumatically controlled through a pneumatic pressure regulator (back-up mode).\ The electrical pressure regulator is fitted with a torque motor. The pneumatic pressure regulator is supplied directly with cabin pressure. The normal/back-up mode switching is ensured by a control solenoid. The shut-off function is ensured by an on/off solenoid. Two microswitches ensure the valve Fully Closed (FC)/Not Fully Closed (NFC) position detection. The FCV is fitted with a mechanical visual indicator and a locking screw for maintenance purposes. SENSORS Four different sensors are used for the actual pack airflow calculation: - two flow sensors measure the differential pressure through the FCV, - a pack inlet pressure sensor reads the air pressure upstream from the G7508471 - G7UT0TU - FM21D1AIRFLOW03 FCV, - a bleed temperature sensor reads the air temperature upstream from the FCV. OZONE CONVERTER An ozone converter is fitted in the hot bleed air supply duct upstream from the FCV. The ozone converter removes the ozone from the air by catalytic effect. CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) PACK AIR FLOW REGULATION D/O (3) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 28 Page 28 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM21D1AIRFLOW03 SYSTEM DESCRIPTION - FLOW CONTROL VALVE (FCV)... OZONE CONVERTER CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) PACK AIR FLOW REGULATION D/O (3) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 29 Page 29 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM21D1AIRFLOW03 SYSTEM DESCRIPTION - FLOW CONTROL VALVE (FCV)... OZONE CONVERTER CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) PACK AIR FLOW REGULATION D/O (3) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 30 Page 30 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL This Page Intentionally Left Blank G7508471 - G7UT0TU - FM21D1AIRFLOW03 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) PACK AIR FLOW REGULATION D/O (3) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 31 Page 31 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL PACK AIR FLOW REGULATION D/O (3) PACK FLOW REGULATION FCV SHUT-OFF Each FCV has two different flow regulation modes. In this module we The FCV shut-off is ensured by the on/off solenoid. The FCV closes describe only the FCV 1 system. The normal mode operates as long as when the on/off solenoid is energized. The FCV flow regulation is enabled the control solenoid is energized by the PC. The pneumatic back-up mode when the on/off solenoid is de-energized. A pack closure relay directly takes over when the control solenoid is not energized. commands the on/off solenoid according to: - the associated PACK P/BSW position, NORMAL MODE - an engine start/relight condition, The PC controls the electrical pressure regulator through a torque - an engine fire condition, motor. The PC compares the pack flow demand received from the ZC - the DITCHING P/BSW position, to the actual flow. The actual flow is calculated by the PC and based - the cabin and cargo doors status. on: - two differential pressure inputs, ON/OFF FUNCTION - the bleed air temperature, FCV 1 closes when the PACK 1 P/BSW is set to OFF. FCV 2 closes - the pack inlet pressure, when the PACK 2 P/BSW is set to OFF. - the cabin altitude. ENGINE START/RELIGHT PNEUMATIC BACK-UP MODE Each PC closes its associated FCV as soon as an engine start or relight The pneumatic back-up mode operates if the control solenoid electrical sequence is initiated. EIVMU 1 transmits engine start data to PC 1 power supply is lost or the electrical pressure regulator torque motor for control of FCV 1. EIVMU 2 transmits engine start data to PC 2 fails. The pneumatic pressure regulator regulates the flow to 125% for control of FCV 2. The FCV opens at the end of the start sequence and keeps it constant according to: in flight or after a delay following the start sequence on ground. The G7508471 - G7UT0TU - FM21D1AIRFLOW03 - a differential pressure measured within the FCV, EIVMU will not generate an FCV closure signal during an engine - a pneumatic cabin pressure input. relight in flight with N2>50% (N3>50% for RR engine). Both FCVs The FCVs pneumatically close if the pack inlet pressure drops below close if an engine start occurs with the crossbleed valve in open 5 PSI. position. INDICATING ENGINE FIRE The FCV position, the actual flow and the pack flow demand target FCV 1 closes if ENGine 1 FIRE P/BSW is released out. FCV 2 closes data for normal mode are transmitted to the EIS through the ZC. These if ENG 2 FIRE P/BSW is released out. indications are displayed on the ECAM BLEED page. CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) PACK AIR FLOW REGULATION D/O (3) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 32 Page 32 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL DITCHING Both FCVs close as soon as the DITCHING P/BSW is set to ON. The ditching signal is transmitted to each pack close relay via a ditching relay. DOORS NOT CLOSED AND LOCKED The ZC checks the door status inputs after the first engine is started and continuously monitors the door status until the throttle lever are set to take-off power (flight phase 2). During flight phase 2, the PC will automatically close both FCVs to prevent fuselage pressurization if the door status is "doors not closed and locked". The PC will open both FCVs as soon as the door status becomes "doors closed and locked". From flight phase 3, the latest door status monitored during phase 2 will be memorized and latched. The memorized door status will be reset and the actual door status monitoring resumed if at least throttle lever 2 or 3 is removed from the take-off power position and the A/C is on ground. FCV POSITION DISAGREEMENT A FAULT light comes on, on the PACK 1(2) P/BSW when the FCV 1(2) position disagrees with the commanded position. The fault light is triggered through an FCV 1(2) disagree relay. An associated ECAM G7508471 - G7UT0TU - FM21D1AIRFLOW03 warning message will be triggered on the EWD. CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) PACK AIR FLOW REGULATION D/O (3) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 33 Page 33 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM21D1AIRFLOW03 PACK FLOW REGULATION... FCV POSITION DISAGREEMENT CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) PACK AIR FLOW REGULATION D/O (3) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 34 Page 34 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL This Page Intentionally Left Blank G7508471 - G7UT0TU - FM21D1AIRFLOW03 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) PACK AIR FLOW REGULATION D/O (3) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 35 Page 35 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL PACK AIR FLOW REGULATION D/O (3) PACK FLOW DEMAND APU BLEED AIR SUPPLY The pack flow demand is set to 123.5% if both packs are operative The pack flow demand calculation is performed by the Zone Controller and the APU bleed valve is open. (ZC). It is used as a target value by each PC for controlling the FCVs. The pack flow demand basically depends on the AIR FLOW selector FLOW INCREASE REQUEST position. The pack flow demand is set to: The pack flow demand is increased in order to maintain cabin - 100% if the selector is in MAN position, pressurization. The demand comes from the CPCs. - 80% if the selector is in LO position. The demand is variable if the selector is in NORM or HIGH position. TAKE-OFF/OPPOSITE PACK START Each PC overrides the pack flow demand received from the ZC to AIR MANAGEMENT prevent pack compressor overheat. Thus, pack flow demands are set The air management function ensures a fuel consumption reduction to 80% during take-off or opposite pack starting sequence. without affecting passenger comfort. It calculates a pack flow demand based on: - the NORM/HIGH AIR FLOW selector position, - the cabin layout from the Cabin Intercommunication Data System (CIDS). CARGO OFFSET The pack flow demand is offset if optional cargo compartment heating or cooling systems are installed. The offset depends on: - the FWD cargo cold air valve position, if installed, G7508471 - G7UT0TU - FM21D1AIRFLOW03 - the aft cargo cold air valve position, if installed. These positions are transmitted by the Ventilation Controller (VC). LOWER DECK FACILITY OFFSET The pack flow demand is also offset if an optional lower deck facility is installed. The offset value depends on the lower deck facility configuration transmitted by the CIDS. ONE BLEED OFF The pack flow demand is limited if both packs are operative and one engine bleed air system is off. CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) PACK AIR FLOW REGULATION D/O (3) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 36 Page 36 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM21D1AIRFLOW03 PACK FLOW DEMAND - AIR MANAGEMENT... TAKE-OFF/OPPOSITE PACK START CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) PACK AIR FLOW REGULATION D/O (3) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 37 Page 37 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL PACK AIR FLOW REGULATION D/O (3) PACK FLOW DEMAND (continued) ABNORMAL OPERATION: ZONE CONTROLLER FAILURE In case of zone controller failure, the flow is set to 100% or 140% if single pack operation. The pack outlet temperature is set to 20 deg.C. G7508471 - G7UT0TU - FM21D1AIRFLOW03 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) PACK AIR FLOW REGULATION D/O (3) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 38 Page 38 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM21D1AIRFLOW03 PACK FLOW DEMAND - ABNORMAL OPERATION: ZONE CONTROLLER FAILURE CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) PACK AIR FLOW REGULATION D/O (3) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 39 Page 39 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL PACK AIR FLOW REGULATION D/O (3) PACK FLOW DEMAND (continued) ABNORMAL OPERATION: PACK CONTROLLER FAILURE In case of pack controller failure, the Flow Control Valve operates pneumatically. The flow is set to 120 % of nominal flow G7508471 - G7UT0TU - FM21D1AIRFLOW03 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) PACK AIR FLOW REGULATION D/O (3) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 40 Page 40 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM21D1AIRFLOW03 PACK FLOW DEMAND - ABNORMAL OPERATION: PACK CONTROLLER FAILURE CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) PACK AIR FLOW REGULATION D/O (3) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 41 Page 41 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL PACK TEMPERATURE CONTROL D/O (3) other lane remains in a passive ''hot-standby'' mode. An automatic PACK OVERVIEW PRINCIPLE changer over occurs at the end of each flight or during the flight, if there is a failure in the active lane. If a fault occurs in both lane, active A dedicated PC controls the pack air temperature. control will be passed to the lane with the least significant fault. SYSTEM ARCHITECTURE PACK CONTROLLER The pack air temperature is controlled by: Each Pack Controller (PC) contains two independent computer lanes, - the Temperature Control Valve (TCV) for short-term regulation, each of which is able to perform all control, monitoring and BITE - the RAI and Ram Air Outlet (RAO) flaps for long-term regulation. functions. One of these lanes is designated as being "active" while The TCV directly modulates the pack discharge temperature by adding the other lane remains in a passive "hot-standby" mode. An automatic hot air to the ACM outlet. The RAI and RAO flaps modulate the ram changeover occurs at the end of each flight or during the flight, if airflow through the ram air system. Electrical actuators actuate the there is a failure in the active lane. Should a fault exist in both lanes, flaps. During take-off and landing, the RAI flap fully closes to prevent active control will be passed to the lane with the least significant fault. ingestion of foreign matter. An anti-ice valve prevents ice build-up A covered RS232 test equipment connector is fitted to the controller in the water extraction loop. The AIV pneumatically modulates hot front. bleed air supply to the ACM outlet in case of icing conditions. In the event of ACM failure, the cooling is performed by the heat exchangers and the pack temperature control is achieved by means of ram air modulation and temperature control valve regulation. SYSTEM CONTROLS The PC electrically controls the TCV and the actuators according to: - the pack temperature demand calculated by the ZC, G7508471 - G7UT0TU - FM21D3AIRPCTL03 - the actual pack temperature. The pack temperature demand calculation depends on the lowest temperature demand based on: - the temperature selections on the AIR panel, - the cabin area temperature adjustment on the Flight Attendant Panel (FAP) through the CIDS. SYSTEM MONITORING Each PC provides basic temperature and flow regulation of its associated pack. The PC contains two independent computer lanes, each of which is capable of performing all control and monitoring functions. One of these lanes is designated as being ''active'' while the CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) PACK TEMPERATURE CONTROL D/O (3) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 42 Page 42 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM21D3AIRPCTL03 PACK OVERVIEW PRINCIPLE - SYSTEM ARCHITECTURE... PACK CONTROLLER CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) PACK TEMPERATURE CONTROL D/O (3) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 43 Page 43 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL PACK TEMPERATURE CONTROL D/O (3) SYSTEM DESCRIPTION The pack temperature regulation system ensures: - pack discharge temperature regulation, - ice build-up protection, - overheat protection, - main pack parameters monitoring. PACK COMPONENT D/O: COOLING/WATER EXTRACTION The air cooling system decreases the temperature of the hot bleed air from the pneumatic system. It also reduces the quantity of water in the hot bleed air. The water extractors are installed between the condensers and the reheaters. They remove the water that condenses in the condensers. The condensed water and the water from the split duct drains to the applicable water injectors. G7508471 - G7UT0TU - FM21D3AIRPCTL03 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) PACK TEMPERATURE CONTROL D/O (3) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 44 Page 44 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM21D3AIRPCTL03 SYSTEM DESCRIPTION & PACK COMPONENT D/O: COOLING/WATER EXTRACTION CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) PACK TEMPERATURE CONTROL D/O (3) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 45 Page 45 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL PACK TEMPERATURE CONTROL D/O (3) PACK COMPONENT D/O: HEATING SYSTEM AIR INLET/OUTLET FLAP ACTUATORS Each actuator is mechanically driven by an electrical motor controlled by the pack controller. Each actuator is fitted with: - 2 potentiometers for actual position feedback, - 2 limit switches to prevent damage in case of potentiometer failure. TEMPERATURE CONTROL VALVE The temperature control valve is a modulating butterfly valve. The temperature control valve is mechanically actuated by a stepper motor and electrically controlled by the pack controller. The temperature control valve is fitted with potentiometers installed at the end of its shaft which send electrical resistance value in relation to the valve position. The lower end of the valve shaft has an indication-mark showing the position of the valve. ANTI-ICE VALVE The anti-ice valve is a modulating butterfly valve. The anti-ice valve is pneumatically actuated and: - pneumatically controlled through high and low pressure delta P servos when operating in the anti-ice mode, G7508471 - G7UT0TU - FM21D3AIRPCTL03 - pneumatically controlled through a pneumatic temperature sensor when operating in the temperature regulation pneumatic mode. The delta P servos measure the differential pressure across the condenser for high and low pressure airflow paths. The temperature regulation pneumatic mode is enabled by a solenoid that is electrically controlled by the pack controller. There is a manual lever used for observing the butterfly valve position and manually operating it. CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) PACK TEMPERATURE CONTROL D/O (3) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 46 Page 46 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM21D3AIRPCTL03 PACK COMPONENT D/O: HEATING SYSTEM - AIR INLET/OUTLET FLAP ACTUATORS... ANTI-ICE VALVE CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) PACK TEMPERATURE CONTROL D/O (3) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 47 Page 47 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL PACK TEMPERATURE CONTROL D/O (3) SENSORS TEMPERATURE SENSORS There are five double element sensing thermistor-type temperature sensors installed throughout the pack which provide temperature feedback to the pack controller for temperature control, monitoring and indicating. The temperature sensors include: - a compressor inlet temperature sensor located upstream from the compressor (4), - a compressor discharge temperature sensor located downstream from the compressor (6), - a heat exchanger temperature sensor located near the split duct (7), - a pack temperature sensor located near the water extractor (8), - a pack discharge temperature sensor located downstream from the turbine (10). PNEUMATIC SENSORS There are two pneumatic sensors of clapper type. A pneumatic compressor overheat sensor (5) is installed at the compressor outlet and it is connected to the Flow Control Valve (FCV). It controls the FCV to protect the pack in case of compressor outlet overheat. The G7508471 - G7UT0TU - FM21D3AIRPCTL03 pneumatic temperature sensor (9) installed at the pack outlet is connected to the anti-ice valve. It controls the anti-ice valve to regulate the pack discharge temperature in case of normal temperature regulation failure. CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) PACK TEMPERATURE CONTROL D/O (3) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 48 Page 48 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM21D3AIRPCTL03 SENSORS - TEMPERATURE SENSORS & PNEUMATIC SENSORS CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) PACK TEMPERATURE CONTROL D/O (3) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 49 Page 49 REV. 1 FOR TRAINING PURPOSES ONLY DATE:01.06.2019  A330-200/300 TECHNICAL TRAINING MANUAL PACK TEMPERATURE CONTROL D/O (3) used to get actual position feedback. Under specific aircraft operating PACK TEMPERATURE REGULATION: NORMAL MODE phases, fixed ram air door position signals are used as reference signals. The normal mode is based on the pack temperature demand, which corresponds to the lowest zone temperature demand. The pack temperature demand is computed by the zone controller and limited to a low value by the pack controller. The low value depends on the aircraft altitude. To prevent ice formation in the High Pressure (HP) section of the pack, the temperature is kept above freezing until humidity no longer exists in the bleed air. The pack controller sets the pack temperature demand to 20°C as default value, if there is no demand signal sent by the zone controller. The limited pack temperature demand is then compared to the actual temperature measured by the pack temperature sensor (8) or, if failed, by the pack discharge temperature sensor (10).The pack discharge temperature data is transmitted to the EIS through the zone controller and displayed on the ECAM BLEED page. The temperature error signal is processed through a temperature control valve control logic and used to: - control the temperature control valve stepper motor, - calculate the temperature control valve actual position. The temperature control valve actual position determination is based on a step counting principle, after a self-adjustment during a power-up test. G7508471 - G7UT0TU - FM21D3AIRPCTL03 The temperature regulation through the temperature control valve is used for short-term regulation. For long-term regulation, the ram air doors slowly take over from the temperature control valve by modulating the ram airflow while the temperature control valve is driven back to an optimized position. This enables the system to: - satisfy pack flow requirements, and - minimize ram air drag. Under normal conditions, the air outlet flap actuator control is based on the temperature control valve control signal. The air inlet flap actuator is slaved to the actual air outlet flap actuator position. Potentiometers are CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) PACK TEMPERATURE CONTROL D/O (3) Nov 20, 2008 21 - AIR CONDITIONING B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES