A330-200/300 APU Training Manual PDF
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Uploaded by EminentAspen
UAntwerp
2019
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Summary
This document is a training manual for the A330-200/300 Auxiliary Power Unit (APU). It includes details on APU line maintenance, servicing procedures, and system overviews.
Full Transcript
A330-200/300 DIFFERENCES FROM A318/A319/A320/A321 (CFM56/V2500) TRAINING MANUAL APU THIS MANUAL IS FOR TRAINING PURPOSES ONLY AND SHOULD NOT BE USED FOR ANY OTHER PURPOSE...
A330-200/300 DIFFERENCES FROM A318/A319/A320/A321 (CFM56/V2500) TRAINING MANUAL APU 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 APU APU Line Maintenance Briefing (2).......................... 2 APU General D/O (3)..................................... 20 APU Fuel D/O (3)....................................... 34 APU Air D/O (3)........................................ 38 APU Oil D/O (3)........................................ 40 APU Operation, Ignition and Starting D/O (3)................. 64 G7508471 - G7UT0TU CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) TABLE OF CONTENTS Nov 21, 2008 49 - APU Page 1 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 1 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL APU LINE MAINTENANCE BRIEFING (2) SYSTEM OVERVIEW The Auxiliary Power Unit (APU) is located in the unpressurized tail cone. The APU is a self-contained unit, which lets the aircraft be independent of external pneumatic and electrical power sources. The APU is mounted in a fireproof compartment located in the fuselage tail cone. Two access doors give access to the APU compartment for inspection and maintenance task. The APU is hanged in its compartment by shock-mounts. An exhaust duct releases the APU gas into the atmosphere. The APU is a constant-speed gas turbine engine. The constant-speed gas turbine engine drives the accessory gearbox and a load compressor. The APU provides: - electrical power for the aircraft systems, - bleed air for engine starting and air conditioning on the ground, - bleed air for air conditioning / pressurization and wing anti-ice in flight. The APU air intake flap is mounted on the lower fuselage forward of the APU. The intake flap opens when the APU master switch is selected ON and closes when the master switch is selected OFF. When open, it supplies air to the APU inlet for combustion and pneumatic supply. The APU operation is controlled and monitored by the Electronic Control Box (ECB). The ECB has full authority over the following APU functions: - starting, G7508471 - G7UT0TU - FM49B1000000001 - acceleration, - speed governing, - indication, - fault monitoring, - interface with A/C systems. The APU is designed to operate throughout the entire flight envelope. Electrical power is available whenever the APU operates, but bleed air is limited by the demand and is shut off above approximately 23.000 ft. CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 49 - APU Page 2 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 2 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM49B1000000001 SYSTEM OVERVIEW CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 49 - APU Page 3 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 3 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM49B1000000001 SYSTEM OVERVIEW CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 49 - APU Page 4 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 4 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL This Page Intentionally Left Blank G7508471 - G7UT0TU - FM49B1000000001 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 49 - APU Page 5 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 5 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL APU LINE MAINTENANCE BRIEFING (2) SERVICING APU ACCESS DOOR OPENING & CLOSING The APU cowl doors are secured with three quick-release hook latches fasteners and four pin latches. The hook latches secure the doors together and the pin latches secure the doors to the aircraft structure. Procedure to open the doors: - release 3 hook latches, - support the door and release the 2 pin latches of each door, - use support struts to secure the doors. To close the access doors, release the support struts. Support the doors, close the hook latches and then close the pin latches. G7508471 - G7UT0TU - FM49B1000000001 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 49 - APU Page 6 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 6 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM49B1000000001 SERVICING - APU ACCESS DOOR OPENING & CLOSING CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 49 - APU Page 7 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 7 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL APU LINE MAINTENANCE BRIEFING (2) SERVICING (continued) APU OIL SERVICING - open the lock and slowly loosen the oil filler cap to release remaining APU oil servicing is accomplished on an "as-needed" basis or after pressure from the oil reservoir, scheduled oil quantity checks. The ECB monitors the oil level status - check sight glass for level, via the low oil quantity switch when the A/C is on ground, the APU - slowly add oil until the level is at the FULL mark on the sight glass, not is not running and when the power-up initialization is finished, a - close and lock the oil filler cap. few seconds after the APU MASTER SW is pressed in. Pressure fill procedure: Three conditions of the oil level are represented on the EIS and on - check sight glass for level, the Centralized Maintenance System (CMS): - connect pressure and overfill hoses to the APU gearbox, - if an OIL LEVEL: OK indication is displayed on the APU SERVICE - slowly pump oil into the gearbox until the level is at the FULL mark DATA page of the CMS, and if no indication is displayed on the on the sight glass, ECAM APU page, the oil level is sufficient. - remove pressure and overfill hoses. - if an OIL LEVEL: CHECK indication is displayed on the APU SERVICE DATA page of the CMS, and if a CHECK OIL LEVEL message appears on the ECAM APU page, the oil level allows an APU operation for 60 hours. - finally, if an OIL LEVEL: LOW indication is displayed on the APU SERVICE DATA page of the CMS, and if a LOW OIL LEVEL message appears on the ECAM APU page, the oil level is at its minimum and the APU oil reservoir needs to be refilled. The APU LOW OIL LEVEL message agrees with the ADD mark on G7508471 - G7UT0TU - FM49B1000000001 the oil reservoir (gearbox) sight glass. Prior to servicing, shut down the APU and open the APU access doors. Make sure to use the operator-approved oil for servicing (operators may be selected from the approved list). The oil may be serviced by the gravity (most common) or pressure fill procedure (OPTIONAL). NOTE: To get an accurate oil level indication, do not wait longer than 5-15 minutes after the APU shutdown before checking the APU oil. Gravity procedure: CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 49 - APU Page 8 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 8 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM49B1000000001 SERVICING - APU OIL SERVICING CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 49 - APU Page 9 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 9 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM49B1000000001 SERVICING - APU OIL SERVICING CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 49 - APU Page 10 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 10 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL This Page Intentionally Left Blank G7508471 - G7UT0TU - FM49B1000000001 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 49 - APU Page 11 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 11 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL APU LINE MAINTENANCE BRIEFING (2) MEL/DEACTIVATION In case of an APU inlet actuator failure, the APU may be dispatched per Minimum Equipment List (MEL) with the inlet CLOSED or OPEN. If the inlet is deactivated CLOSED, the APU will not be operational. The APU is only operational with the inlet deactivated OPEN - limited to 10 days as per the MEL. The air inlet flap actuator has a manual drive. In case of failure the manual drive may be used to move the inlet to the required position prior to the deactivation. Access to the actuator is through an access door near the APU inlet on the left hand side of the fuselage. The actuator requires 87 turns of the manual drive for one full travel of the inlet flap. Deactivation procedure: - get access to the actuator, - disconnect the actuator electrical connector from the fixed connector on the frame and install a blanking cap, - use the manual drive to move the inlet to the required position. Use a torque wrench to avoid damage to the actuator. NOTE: Note: If the inlet is deactivated CLOSED, no further action is needed other than to placard the APU inop. If the inlet is deactivated OPEN, the following procedure has to be G7508471 - G7UT0TU - FM49B1000000001 accomplished. When the inlet is in the OPEN position, a jumper lead needs to be installed to close the circuit and allow the APU to start. Make a dummy connector and paint it red for easy identification. Close the access door and make the APU operational test: - make the BITE test, - check SERVICE DATA, - start the APU and check for normal parameters. CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 49 - APU Page 12 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 12 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM49B1000000001 MEL/DEACTIVATION CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 49 - APU Page 13 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 13 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL APU LINE MAINTENANCE BRIEFING (2) MAINTENANCE TIPS BLEEDING OF THE APU FUEL LINE CONTROL AND INDICATING The APU fuel supply line has a drain and vent valve which lets the line be bled of air after maintenance. The VENT & DRAIN valve is located in the APU compartment in the fuel supply line towards the fuel control. A switch labeled FUEL VENT/PUSH is installed on the APU compartment forward the firewall to let maintenance staff supply positive fuel pressure to the APU from the APU compartment. This switch opens the APU LP valve, the isolation valve and starts the APU fuel pump without the APU Master Switch ON. A drain valve adapter tool with a hose is connected to the drain valve. Procedure: - for safety, install the rig pin in the mechanical input of the Trimmable Horizontal Stabilizer (THS) actuator to prevent movement, - transfer fuel to the Trim Tank to bleed main FWD/AFT transfer supply line, - open APU access doors, - install adaptor tool, - push and hold the FUEL VENT P/BSW, G7508471 - G7UT0TU - FM49B1000000001 - at the APU fuel vent and drain valve, a continuous flow of fuel indicates that the APU fuel pump is operating and the line is bled of air, - release the FUEL VENT P/BSW - the flow of fuel stops when the APU fuel pump stops running, - disconnect the adapter tool. CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 49 - APU Page 14 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 14 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM49B1000000001 MAINTENANCE TIPS - BLEEDING OF THE APU FUEL LINE CONTROL AND INDICATING CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 49 - APU Page 15 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 15 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL APU LINE MAINTENANCE BRIEFING (2) MAINTENANCE TIPS (continued) 5000VE CIRCUIT BREAKER PANEL The APU maintenance procedures in the AMM reference circuit breakers on panel 5000VE (APU CTL, APU MAIN SUPPLY, etc.). The 5000VE panel is located in the APU BOX below the APU battery in the bulk cargo compartment behind the sidewall panel. G7508471 - G7UT0TU - FM49B1000000001 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 49 - APU Page 16 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 16 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM49B1000000001 MAINTENANCE TIPS - 5000VE CIRCUIT BREAKER PANEL CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 49 - APU Page 17 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 17 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL APU LINE MAINTENANCE BRIEFING (2) ENVIRONMENTAL PRECAUTIONS Do not discharge products such as oil, fuel, solvent, lubricant either in trash bins, soil or into the water network (drains, gutters, rain water, waste water, etc...). Sort waste fluids and use specific waste disposal containers. Each product must be stored in an appropriate and specific cabinet or room such as a fire-resistant and sealed cupboard. Avoid use of the APU if APU BLEED air is not necessary. Turn-off unused ground service equipment (GPU, Air conditioning cart, etc...) if no work is being done or nobody is present on the aircraft. G7508471 - G7UT0TU - FM49B1000000001 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 49 - APU Page 18 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 18 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM49B1000000001 ENVIRONMENTAL PRECAUTIONS CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 49 - APU Page 19 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 19 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL APU GENERAL D/O (3) GENERAL The Auxiliary Power Unit (APU) power plant GTCP331-350 is divided into different sub-systems, which are: - the engine system including three basic modules, the power section, the load compressor, the accessory drive gearbox, - the APU mounts system, - the air intake system, - the draining system, - the exhaust system. G7508471 - G7UT0TU - FM49D1000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU GENERAL D/O (3) Nov 20, 2008 49 - APU Page 20 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 20 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM49D1000000003 GENERAL CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU GENERAL D/O (3) Nov 20, 2008 49 - APU Page 21 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 21 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL APU GENERAL D/O (3) ENGINE POWER SECTION LOAD COMPRESSOR The power section of the GTCP331-350 system supplies the shaft power The load compressor module supplies compressed air to the A/C to drive: pneumatic system. It is installed between the power section and the - the load compressor, accessory drive gearbox. The load compressor components are: - the accessory drive gearbox and the electrical generator. It is built up - the Inlet Guide Vanes (IGV) assembly, by the static structure and the rotating group. The static structure - the load compressor impeller, comprises the engine compressor case and the combustion chamber. - the load compressor diffuser, The rotating group, including the centrifugal compressor and turbine, is - the scroll. a single shaft assembly supported with a ball bearing located at the FWD A FWD roller bearing and an aft ball bearing support the rotating end and a roller bearing located at the aft end. Both bearings are designed components of the load compressor. Both bearings are designed with a with a lubricated outer race to damp vibrations. Their 100% operation lubricated outer race to damp vibrations. speed is 41730 rpm. INLET GUIDE VANES ASSEMBLY ENGINE COMPRESSOR The variable IGV assembly supplies the correct amount of air to the The engine compressor is a two-stage centrifugal compressor. Each APU load-compressor by modulating the vane position angles. It is compressor stage has an impeller and a diffuser. The role of the engine composed of IGVs on a cylindrical rack mechanically connected to centrifugal compressor is to increase and to guide the air pressure a fuel-operated actuator by an adjustable linkage rod. through deswirl vanes into the combustion chamber. LOAD COMPRESSOR IMPELLER COMBUSTION CHAMBER The load compressor impeller is a single stage impeller. The combustion chamber is of a reverse-flow annular design and LOAD COMPRESSOR DIFFUSER surrounds the turbine hub containment. While the compressed air is G7508471 - G7UT0TU - FM49D1000000003 in the combustion chamber, fuel is atomized and mixed into the air. Downstream of the load compressor impeller is the radial diffuser. During the combustion, the expanded gas stream is directed to the Multiple openings in the diffuser throat are used to collect the static turbine where it changes its energy into rotational movement. pressure. TURBINE SCROLL The turbine of the GTCP331-350 power section is of the three-stage The scroll collects the bleed air at the diffuser outlet and supplies it axial design. The turbine rotors are the rear part of the main shaft. to the bleed air duct. Their 100% operation speed is 41730 rpm. CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU GENERAL D/O (3) Nov 20, 2008 49 - APU Page 22 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 22 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL ACCESSORY DRIVE GEARBOX The accessory drive gearbox is the FWD APU module. It is connected directly to the load compressor module, which transmits the shaft power from the power section. The gearbox transmits the shaft power to the APU accessories and to the APU electrical generator, which are installed on the gearbox pads. It is also the oil reservoir for the APU oil system. The APU driven accessories are: - the APU generator, - the lubrication module and the Fuel Control Unit (FCU). G7508471 - G7UT0TU - FM49D1000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU GENERAL D/O (3) Nov 20, 2008 49 - APU Page 23 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 23 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM49D1000000003 ENGINE POWER SECTION... ACCESSORY DRIVE GEARBOX CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU GENERAL D/O (3) Nov 20, 2008 49 - APU Page 24 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 24 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL This Page Intentionally Left Blank G7508471 - G7UT0TU - FM49D1000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU GENERAL D/O (3) Nov 20, 2008 49 - APU Page 25 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 25 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL APU GENERAL D/O (3) APU MOUNTS SYSTEM The APU is installed on a three-point vibration-insulated mounting system. This system is composed of: - seven structure brackets, - seven rod assemblies, - three APU mount brackets, - three vibration isolators, - two bonding straps. G7508471 - G7UT0TU - FM49D1000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU GENERAL D/O (3) Nov 20, 2008 49 - APU Page 26 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 26 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM49D1000000003 APU MOUNTS SYSTEM CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU GENERAL D/O (3) Nov 20, 2008 49 - APU Page 27 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 27 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL APU GENERAL D/O (3) AIR INTAKE SYSTEM The air intake system supplies ambient air to the plenum chamber of the APU. The main components of the air intake system are: - the air intake diverter, - the air intake assembly, with an air intake nose, an air intake flap and an air intake flap actuator, - the air intake duct. The Electronic Control Box (ECB) supplies the necessary electrical power for the operation of the air intake flap actuator. The two limit switches and the two position switches control the position of the air intake flap actuator. When the A/C is on the ground with no electrical power available or in case of flap actuator failure, the air intake flap can be operated manually by a manual override device. G7508471 - G7UT0TU - FM49D1000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU GENERAL D/O (3) Nov 20, 2008 49 - APU Page 28 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 28 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM49D1000000003 AIR INTAKE SYSTEM CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU GENERAL D/O (3) Nov 20, 2008 49 - APU Page 29 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 29 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL APU GENERAL D/O (3) DRAIN SYSTEM The power plant drain system is divided into two subsystems: - the engine drain line system, - the accessory drain line system. The engine drain line system removes the subsequent excess fluids: - the fuel, rainwater and/or condensed water from the exhaust muffler, - the fuel, rainwater and/or condensed water from the APU exhaust cone, - the fuel and condensed water from the combustion chamber and the combustion chamber drain valve. The accessory drain line system removes subsequent excess fluids: - fuel leakage and/or oil leakage from the FCU and the oil pump module, through the drain port check valve, - fuel leakage from the surge control valve, - fuel leakage from IGV actuator. An APU plumbing connects the engine and accessory drain line systems to outboard drain tubes. A FWD drain mast installed on the left APU compartment access door makes sure that the APU compartment fluid is drained overboard. G7508471 - G7UT0TU - FM49D1000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU GENERAL D/O (3) Nov 20, 2008 49 - APU Page 30 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 30 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM49D1000000003 DRAIN SYSTEM CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU GENERAL D/O (3) Nov 20, 2008 49 - APU Page 31 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 31 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL APU GENERAL D/O (3) EXHAUST The APU exhaust system ducts the APU GTCP331-350 exhaust gases overboard; its secondary function is to decrease the exhaust noise level. The exhaust system is made of two main components: - the exhaust muffler assembly, - the suspension. The exhaust muffler assembly directs the exhaust gas flow to the ambient air, reducing the exhaust noise. It is composed of a flexible connection, which compensates expansion and contraction between the APU and the exhaust muffler caused by changes in temperature. The exhaust muffler suspension has two guide rails, which are part of the exhaust muffler compartment structure. They have a U shape. On the exhaust muffler there are four mount brackets. These fit into guide rails allowing thermal expansion. The exhaust muffler has a thermal insulation. It keeps the temperature at the external surface of the exhaust muffler to a limit of 200°C. G7508471 - G7UT0TU - FM49D1000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU GENERAL D/O (3) Nov 20, 2008 49 - APU Page 32 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 32 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM49D1000000003 EXHAUST CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU GENERAL D/O (3) Nov 20, 2008 49 - APU Page 33 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 33 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL APU FUEL D/O (3) GENERAL The Auxiliary Power Unit (APU) fuel system supplies metered fuel to sustain combustion. It is also used for Inlet Guide Vane (IGV) and surge control valve actuators operation. APU fuel system indications are displayed on the EWD and the SD. G7508471 - G7UT0TU - FM49D3000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU FUEL D/O (3) Nov 20, 2008 49 - APU Page 34 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 34 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM49D3000000003 GENERAL CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU FUEL D/O (3) Nov 20, 2008 49 - APU Page 35 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 35 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL APU FUEL D/O (3) FUEL CONTROL UNIT FUEL DISTRIBUTION The Fuel Control Unit (FCU) supplies the fuel quantity which is necessary Fuel flows to the combustion chamber through 12 fuel nozzles. At the for the APU operation. It also supplies the necessary fuel to operate the start sequence, only the primary flow is supplied, but at a preset fuel IGV and the SURGE CONTROL VALVE actuators. pressure, the secondary flow is supplied. The FCU is composed of: - an inlet filter, CONTROL AND MONITORING - a high pressure pump, The ECB controls the fuel system using the APU speed, EGT, and A/C - a high pressure filter, demand signals during on-speed operation. It uses the APU speed, Exhaust - a torque-motor metering valve, Gas Temperature (EGT), fuel temperature and fuel flow during starting. - a shut-off valve. The APU boost pumps are monitored by the ECB through a pressure FUEL SCHEDULE switch installed at the FCU inlet. The Fuel Metering Valve (FMV) is a torque-motor metering valve. A visual filter-clogging indicator is used to monitor the fuel system It is controlled by the Electronic Control Box (ECB) which schedules contamination. the fuel flow for start sequence, on-speed operation and shut-down sequence. MUSCLE PRESSURE Fuel muscle pressure is used to operate the surge control valve actuator and the load compressor IGV actuator. FUEL SHUT-OFF G7508471 - G7UT0TU - FM49D3000000003 The ECB controls the fuel solenoid valve for positive fuel shut-off. The valve is controlled open during the start sequence, and closed during the stop sequence. FLOW DIVIDER The flow divider divides fuel into primary and secondary flows. During the start sequence, only the primary flow is supplied. At the APU shutdown, compressor discharge stage 2 air blows out the residual fuel from the two manifolds during APU shutdown through an ecologic drain solenoid valve controlled by the ECB. CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU FUEL D/O (3) Nov 20, 2008 49 - APU Page 36 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 36 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM49D3000000003 FUEL CONTROL UNIT... CONTROL AND MONITORING CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU FUEL D/O (3) Nov 20, 2008 49 - APU Page 37 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 37 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL APU AIR D/O (3) - the A/C bleed demand sent by the Zone Controller (ZC), GENERAL - the Load Compressor Inlet Temperature (LCIT), - the Load Compressor Outlet Temperature (LCOT), The air system delivers compressed air from the Auxiliary Power Unit - P2. (APU) load compressor and cools the accessory. The two subsystems The IGVs actuator moves under fuel pressure to the requested position are: which is fed back to the ECB using the actuator LVDT. Consequently - bleed and surge air, the IGVs are set to a position satisfying the airflow demand. - accessory cooling. To prevent an APU load compressor surge in the event of a higher flow BLEED AND SURGE SUBSYSTEM DESCRIPTION delivered than actually used by the A/C systems, the ECB controls the torque motor of the surge control valve. The surge control valve torque The APU load compressor supplies bleed air to the pneumatic system. motor current is calculated by the ECB from the comparison of the actual Bleed air quantity is controlled by the load compressor Inlet Guide Vanes flow delivered and the selected flow from the IGVs setting. (IGVs) which are moved by a fuel-powered actuator. A bleed air shut-off A total pressure (PT) transducer, and a differential pressure transducer valve, pneumatically operated, lets or stops the bleed air flow to the ( P) send data to the ECB. The actual flow is given by the ratio P/PT. pneumatic system. When the actual flow is greater than the selected flow, indicating a surge, A surge control valve prevents a load compressor surge, by discharging the ECB adjusts the surge control valve torque motor current. The surge the excess of air in the exhaust. It is a butterfly-type valve hydraulically control valve actuator moves under fuel pressure and the valve opens, operated by fuel coming from the Fuel Control Unit (FCU). The valve releasing the excess of air to the exhaust. has a Linear Variable Differential Transducer (LVDT) for position Feedback of the surge control valve is given to the ECB by an LVDT. feedback. Once the surge condition disappears, the surge control valve goes back to the closed position. BLEED AND SURGE AIR OPERATION ACCESSORY COOLING G7508471 - G7UT0TU - FM49D4000000003 APU bleed air is delivered when all the following conditions are met: - APU is running above 95% speed, A gearbox-driven fan draws air from the inlet plenum and forces it to - APU bleed switch is selected, pass through the oil cooler and from there overboard. - No bleed leak detected by the Bleed Monitoring Computers (BMCs), The fan also supplies air to the APU compartment through a pneumatic - APU inlet pressure (P2) altitude is below 25,000 feet. cooling valve which is fully closed in altitude. An uncontrolled cooling By pressing the APU BLEED P/B, if no leak is detected, the BMCs send orifice is used permanently for the cooling when the APU is running. a signal to the Electronic Control Box (ECB) which energizes the APU bleed valve solenoid. Using upstream bleed air pressure, the APU bleed valve fully opens. Then, the ECB adjusts the IGVs actuator torque motor current according to the following parameters: CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU AIR D/O (3) Nov 20, 2008 49 - APU Page 38 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 38 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM49D4000000003 GENERAL... ACCESSORY COOLING CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU AIR D/O (3) Nov 20, 2008 49 - APU Page 39 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 39 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL APU OIL D/O (3) LUBE MODULE DESCRIPTION The lubrication module, also called lube module, is attached to the front of the gearbox. It provides continuous pressurized oil supply to APU components, and scavenges oil from lubricated components. The lubrication module is a self-contained unit providing oil to: - the generator, - the gearbox, - the main shaft bearings sump. The lube module contains: - a lube pump system and a scavenge pump system, - a lube filter fitted with a differential pressure switch for clogging detection and a clogging visual indicator, - a lube filter bypass valve, - a generator scavenge filter also fitted with a differential pressure switch for clogging detection and a clogging visual indicator, - a generator scavenge filter by-pass valve, - an electrical chip detector, - a solenoid de-oiling valve. LUBE PUMP SYSTEM AND SCAVENGE PUMP SYSTEM The lubrication section incorporates two gyrotor element scavenge pumps for clearing oil from the generator, and two single element G7508471 - G7UT0TU - FM49D2000000003 gyrotor scavenge pumps for cl earing oil from the APU mid-frame and turbine bearing cavity. CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU OIL D/O (3) Nov 20, 2008 49 - APU Page 40 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 40 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM49D2000000003 LUBE MODULE DESCRIPTION - LUBE PUMP SYSTEM AND SCAVENGE PUMP SYSTEM CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU OIL D/O (3) Nov 20, 2008 49 - APU Page 41 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 41 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL APU OIL D/O (3) LUBE MODULE DESCRIPTION (continued) LOW OIL PRESSURE (LOP) SWITCH AND HIGH OIL TEMPERATURE (HOT) SENSOR A Low Oil Pressure (LOP) switch monitors the regulated oil pressure. When the LOP finds that the oil pressure is too low, it transmits a discrete signal to the ECB. A High Oil Temperature (HOT) sensor measures the temperature of the oil downstream of the oil cooler. The ECB receives the temperature signal and thus monitors the APU oil temperature. G7508471 - G7UT0TU - FM49D2000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU OIL D/O (3) Nov 20, 2008 49 - APU Page 42 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 42 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM49D2000000003 LUBE MODULE DESCRIPTION - LOW OIL PRESSURE (LOP) SWITCH AND HIGH OIL TEMPERATURE (HOT) SENSOR CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU OIL D/O (3) Nov 20, 2008 49 - APU Page 43 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 43 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL APU OIL D/O (3) LUBE MODULE DESCRIPTION (continued) LUBE AND SCAVENGE OIL FILTERS The filters are contained in housings, which are threaded into the lubrication module housing. The same kind of filter is used in the lubrication and in the scavenge circuits. Both are replaceable and non-cleanable. Each filter housing is equipped with a visual clogging indicator and a differential pressure switch. The differential pressure switches are LRUs that provide a remote, real-time indication to the ECB of impending bypass of corresponding filter. The actuation of either or both switches will cause an APU auto-shutdown, inhibited during flight. Filter bypass valves are installed in the supply circuit and generator scavenge circuit of the lube module. These bypass valves allow continued APU operation with highly contaminated or blocked filter, when operating the APU in the auto-shutdown inhibition phase. The visual indicator is designed to trigger at 25 +/-5 psid, the differential pressure switches at 35 +/-5 psid and the bypass valve to open at 65 +/-5 psid. Thus, the visual indication will be provided prior to the earliest possible switch actuation, and switch actuation prior to the opening of the bypass valve. G7508471 - G7UT0TU - FM49D2000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU OIL D/O (3) Nov 20, 2008 49 - APU Page 44 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 44 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM49D2000000003 LUBE MODULE DESCRIPTION - LUBE AND SCAVENGE OIL FILTERS CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU OIL D/O (3) Nov 20, 2008 49 - APU Page 45 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 45 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL APU OIL D/O (3) LUBE MODULE DESCRIPTION (continued) SOLENOID DE-OILING VALVE The bypass de-oil solenoid valve is an LRU located on the bottom left hand side of the lube module. It opens to allow air to enter into the inlet side of the pressure pump under specific start conditions (depending on oil temperature, fuel temperature and aircraft altitude) and also during APU shutdown. G7508471 - G7UT0TU - FM49D2000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU OIL D/O (3) Nov 20, 2008 49 - APU Page 46 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 46 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM49D2000000003 LUBE MODULE DESCRIPTION - SOLENOID DE-OILING VALVE CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU OIL D/O (3) Nov 20, 2008 49 - APU Page 47 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 47 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL APU OIL D/O (3) GEARBOX DESCRIPTION The lower part of the gearbox is used as oil reservoir. The total capacity of the oil reservoir is 8.5 liters. The gearbox is fitted with: - a gravity fill port and a pressure fill port, - an oil level sight glass, - a low oil quantity switch, - a low oil temperature sensor, - an oil heater, - an electrical chip detector, - an air/oil separator. Within the gearbox, the cooling fan pad and the starter motor pad are internally supplied with oil. G7508471 - G7UT0TU - FM49D2000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU OIL D/O (3) Nov 20, 2008 49 - APU Page 48 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 48 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM49D2000000003 GEARBOX DESCRIPTION CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU OIL D/O (3) Nov 20, 2008 49 - APU Page 49 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 49 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL APU OIL D/O (3) switch and a nickel-iron alloy coil. It uses an independent aircraft 115 GEARBOX DESCRIPTION (continued) VAC power source to increase the oil temperature. The oil temperature switch is a "thermal temperature-delay switch" which measures the GRAVITY FILLING PORT, PRESSURE FILLING PORT temperature of the oil in the gearbox sump. AND OIL OVERFLOW PORT As soon as the aircraft is powered, if the APU master switch is OFF The gravity filling port is on the left-hand side lower part of the and the oil temperature is less than 21°C, the oil heater is automatically gearbox. It gives a method for the servicing of the Auxiliary Power switched ON. It is deactivated when the oil temperature reaches 43°C. Unit (APU) with oil and it is big enough to have a servicing from a Note that the oil heater has no direct connection to the ECB. 1-quart can. It has a positive locking device when closed. A pressure filling port and an oil overflow port are also installed for remote fill ELECTRICAL CHIP DETECTOR servicing. The gearbox electrical chip detector LRU is installed in the drain plug. The chip detector detects the magnetic particles from the lowest point OIL LEVEL SIGHT GLASS in the oil sump. A sight glass is installed on the gravity fill port for oil level indication. The gearbox electrical chip detector contains an electrical contact gap. It has two sets of markings for the levels, one when the APU is This gap closes when a sufficient quantity of metal particles has been running, and the other one when the APU is not running. For each of accumulated and sends a signal to the ECB. them, there is an "ADD" and a "FULL" mark. The "ADD" mark is equal to an oil quantity of 4.1 liters (low oil level); the "FULL" mark AIR/OIL SEPARATOR is equal to a level of 7.3 liters. The oil reservoir is vented through an air/oil separator to the exhaust cone. When the APU operates, the air/oil separator extracts the oil LOW OIL QUANTITY SWITCH from the air drawn from the lubrication scavenge pump. Once the The low oil quantity switch is located next to the gravity fill oil cap separation is completed, the remaining air is vented through the on the gearbox. It uses dual reed switches for two separate oil level gearbox vent line. The air/oil separator is not an LRU. All these G7508471 - G7UT0TU - FM49D2000000003 indications, which are activated by a magnet/float combination when systems are the gearbox accessories. the oil level changes. LOW OIL TEMPERATURE SENSOR The low oil temperature sensor is installed on the gearbox housing. It measures the temperature of the oil in the reservoir. The sensor transmits the temperature signal to the Electronic Control Box (ECB). OIL HEATER The oil heater is a Line Replaceable Unit (LRU) located on the lower left side of the gearbox. The APU oil heater has an oil temperature CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU OIL D/O (3) Nov 20, 2008 49 - APU Page 50 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 50 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM49D2000000003 GEARBOX DESCRIPTION - GRAVITY FILLING PORT, PRESSURE FILLING PORT AND OIL OVERFLOW PORT... AIR/OIL SEPARATOR CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU OIL D/O (3) Nov 20, 2008 49 - APU Page 51 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 51 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM49D2000000003 GEARBOX DESCRIPTION - GRAVITY FILLING PORT, PRESSURE FILLING PORT AND OIL OVERFLOW PORT... AIR/OIL SEPARATOR CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU OIL D/O (3) Nov 20, 2008 49 - APU Page 52 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 52 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL This Page Intentionally Left Blank G7508471 - G7UT0TU - FM49D2000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) APU OIL D/O (3) Nov 20, 2008 49 - APU Page 53 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 53 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL APU OIL D/O (3) OIL COOLER AND THERMAL BYPASS VALVE The oil cooler and the thermal bypass valve are used to maintain a proper oil temperature during APU operation. The operated Thermal bypass valve operated i
