A330-200 Oxygen 4p271a
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A330-200/300 TECHNICAL TRAINING MANUAL CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) OXYGEN
This document must be used for training purposes only
Under no circumstances should this document be used as a reference
It will not be updated.
All rights reserved No part of this manual may be reproduced in any form, by photostat, microfilm, retrieval system, or any other means, without the prior written permission of AIRBUS S.A.S.
AIRBUS Environmental Recommendation Please consider your environmental responsability before printing this document.
A330-200/300 TECHNICAL TRAINING MANUAL
OXYGEN ENGER OXYGEN
G7108471 - G3RT1TU
enger Gaseous Oxygen System D/O (3) . . . . . . . . . . . . . . . . . . . . 2
CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) 35 - OXYGEN
TABLE OF CONTENTS
Nov 21, 2008 Page 1
A330-200/300 TECHNICAL TRAINING MANUAL
ENGER GASEOUS OXYGEN SYSTEM D/O (3) GENERAL
G7108471 - G3RT1TU - FM35D3000000001
The cabin fixed oxygen system supplies (automatically or manually controlled) oxygen to the occupants, in case of cabin depressurization. The system stores its oxygen in interconnected cylinders (5 up to 18), behind the right hand sidewall lining in the forward cargo compartment. The oxygen goes to the mask containers in the cabin, via two main supply lines and a network of pipes. The containers are above the enger seats, in the lavatories, in each galley, at each cabin crew station and if installed (option) in Flight Crew Rest Compartment (FCRC) and Bulk Crew Rest Compartment (BCRC). Each container has 2, 3, 4 or 5 masks. Two oxygen regulators control the flow rate. The Quantity Calculation and Control Unit (QCCU) supplies the value of the average temperature compensated pressure indicated on the ECAM system page, and a not temperature compensated to the oxygen servicing .
CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) 35 - OXYGEN
ENGER GASEOUS OXYGEN SYSTEM D/O (3)
Nov 20, 2008 Page 2
G7108471 - G3RT1TU - FM35D3000000001
A330-200/300 TECHNICAL TRAINING MANUAL
GENERAL CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) 35 - OXYGEN
ENGER GASEOUS OXYGEN SYSTEM D/O (3)
Nov 20, 2008 Page 3
A330-200/300 TECHNICAL TRAINING MANUAL
ENGER GASEOUS OXYGEN SYSTEM D/O (3) MAIN COMPONENTS OXYGEN STORAGE The enger gaseous emergency oxygen is contained in the enger oxygen storage system. The emergency oxygen is kept in the oxygen cylinders (nominal pressure 1850 psi (127 bars) at 21°C. The Pressure Reducer outlet is nominally 130 psi. The storage system also lets you fill the cylinder assemblies. OVERPRESSURE PROTECTION: - Cylinder pressure above 2770 psi (191 bar), a Safety Disk shears and the related cylinder empties overboard. - Pressure in the low pressure system above 233 psi (16 bar), an independent Pressure Relief Valve relieves the excess of pressure overboard. In all cases, the green indicator is blown out.
DISTRIBUTION When the enger oxygen distribution system is operated, the pressure reducer supplies low-pressure oxygen via two electro-pneumatic oxygen regulators to the two main supply lines. One line is installed below the cabin floor along the RH side of the aircraft This makes sure that sufficient oxygen is available for the engers and the cabin crew if one of the supply lines is damaged in case of engine burst. The enger oxygen distribution system supplies emergency oxygen to each oxygen container above the enger seats, in the lavatories, at the cabin attendant stations and optionally the crew rest rooms. The system is only pressurized in an emergency. Flexible hoses connect the emergency oxygen containers to the supply system.
OXYGEN CONTROL AND INDICATING
G7108471 - G3RT1TU - FM35D3000000001
The enger oxygen control can be done either: - automatically when the cabin altitude exceeds 14000 ft (altitude switch) - or manually from the MASK MAN ON switch. NOTE: The oxygen container door can be mechanically unlatched by means of a manual release tool. Information about the condition of the enger oxygen system is given on: - the ECAM, - the OXYGEN 211VU and the maintenance 285VU. - the MCDU and QCCU front face.
CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) 35 - OXYGEN
ENGER GASEOUS OXYGEN SYSTEM D/O (3)
Nov 20, 2008 Page 4
G7108471 - G3RT1TU - FM35D3000000001
A330-200/300 TECHNICAL TRAINING MANUAL
MAIN COMPONENTS - OXYGEN STORAGE ... DISTRIBUTION CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) 35 - OXYGEN
ENGER GASEOUS OXYGEN SYSTEM D/O (3)
Nov 20, 2008 Page 5
A330-200/300 TECHNICAL TRAINING MANUAL
ENGER GASEOUS OXYGEN SYSTEM D/O (3) OPERATION BEFORE OPERATION
G7108471 - G3RT1TU - FM35D3000000001
The pressure reducer reduces the bottle pressure, from 1850 psi to 130 psi. The two oxygen regulators are closed. The two main distribution Shut-Off Valves (SOVs) are open. The bleed ventilation valve is open, to avoid a risk of pressure build up, or to cause the unlatching of the door.
CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) 35 - OXYGEN
ENGER GASEOUS OXYGEN SYSTEM D/O (3)
Nov 20, 2008 Page 6
G7108471 - G3RT1TU - FM35D3000000001
A330-200/300 TECHNICAL TRAINING MANUAL
OPERATION - BEFORE OPERATION CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) 35 - OXYGEN
ENGER GASEOUS OXYGEN SYSTEM D/O (3)
Nov 20, 2008 Page 7
A330-200/300 TECHNICAL TRAINING MANUAL
ENGER GASEOUS OXYGEN SYSTEM D/O (3) OPERATION (continued)
G7108471 - G3RT1TU - FM35D3000000001
DURING OPERATION When the cabin pressure decreases to a pressure equivalent to 14.000 ft (4267 m) (+250/-750ft) the altitude pressure switch will close. This action operates the emergency oxygen system. If the altitude pressure switch does not operate, you can operate the MANual ON P/BSW on the OXYGEN , located on the overhead . The oxygen regulators are energized, delivering a flow as a function of the cabin altitude. The ENGER SYS ON light comes on, and the tape announcement is started. The air caught in the distribution lines is bled through the open bleed/ventilation valve during 5 seconds, and then this valve closes. The oxygen pressure builds up. The pneumatically controlled door latches let the oxygen container doors open and the masks fall down. The enger pulls the mask to his face, which releases the oxygen flow release pin. Oxygen is supplied to the mask. An oxygen flow indication, which is the green part of the mask reservoir bag, inflates. The Oxygen regulators are designed to supply a continuous flow of oxygen up to 556 masks (depending the version of aircraft). The oxygen regulator is made of two parts: - A pressure-regulation unit - A shut-off valve The pressure-regulation unit operates pneumatically in two operation modes. -Surge mode: The surge pressure of 50 psi (3.4 bar) to 124 psi (8.6 bar) releases the oxygen/air mixture through the bleed/vent valve. After this there is no more air in the oxygen-distribution lines, but only oxygen. This surge of pressure also unlatches the mask container CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) 35 - OXYGEN
doors and makes oxygen available to the mask when de pressure is 21 psi (1.5 bar) and 43 psi (3.0 bar). -Distribution mode: A continuous flow of oxygen is supplied to the masks at a suitable pressure based on the cabin altitude, between 6.4 psi (0.44 bar) at 10 000ft and 98.4 psi (6.8 bar) at 40 000ft. The shut-off valve operates electrically. It has two electrical inputs, one to open the valve, one to close it (at reset). Each shut-off valve also has two electrical switches: - The ''valve fully open'' switch, which operates the ''SYS ON'' light. - The ''valve not fully closed'' switch, which possibly triggers a warning in case of disagreement between the valve position and the selection. A test port is given for ground level simulation of high altitudes using a vacuum source. By using this method, the oxygen pressure schedule can be verified without removing the unit from the aircraft.
ENGER GASEOUS OXYGEN SYSTEM D/O (3)
Nov 20, 2008 Page 8
G7108471 - G3RT1TU - FM35D3000000001
A330-200/300 TECHNICAL TRAINING MANUAL
OPERATION - DURING OPERATION CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) 35 - OXYGEN
ENGER GASEOUS OXYGEN SYSTEM D/O (3)
Nov 20, 2008 Page 9
A330-200/300 TECHNICAL TRAINING MANUAL
ENGER GASEOUS OXYGEN SYSTEM D/O (3) RESET RESET OPERATION To set the system back to the initial configuration, the RESET P/BSW on the maintenance is pushed: - the electrical circuit is set to the initial condition, - the oxygen regulators close, - the main distribution SOVs open, if they are closed. The RESET P/BSW operates only if the cabin pressure is below 10.000 ft. NOTE: Note: the Bleed/Vent Valve opens mechanically.
RESET INDICATING The RESET ON light goes off when the reset is completed (3 seconds). The ENGER SYS ON light goes off.
G7108471 - G3RT1TU - FM35D3000000001
RESET FAILURE The ON light in the RESET P/BSW, on the maintenance 285VU will not go off and the FAULT light comes on if: - the electrical circuit for the gaseous system does not return to the initial condition. The warning REGUL LO PR will be shown on the ECAM if: - the gaseous system does not return to the normal condition after you push the RESET P/BSW, - one of the oxygen regulators is not fully closed, - one of the main distribution SOVs is not fully open, - both main distribution SOVs close when the system has been operated.
CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) 35 - OXYGEN
ENGER GASEOUS OXYGEN SYSTEM D/O (3)
Nov 20, 2008 Page 10
G7108471 - G3RT1TU - FM35D3000000001
A330-200/300 TECHNICAL TRAINING MANUAL
RESET - RESET OPERATION ... RESET FAILURE CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) 35 - OXYGEN
ENGER GASEOUS OXYGEN SYSTEM D/O (3)
Nov 20, 2008 Page 11
A330-200/300 TECHNICAL TRAINING MANUAL
ENGER GASEOUS OXYGEN SYSTEM D/O (3) ENGINE BURST If an engine turbine bursts and damages a main oxygen supply line: - the differential pressure SW sends a signal to the appropriate main distribution SOV, - the appropriate main distribution SOV closes, - the non-return valve will stop the oxygen supply to the related main supply line, The riser line SOVs will stop the oxygen supply to a damaged riser or fall line.
DIFFERENTIAL PRESSURE SWITCH The differential pressure SW compares the pressure in the two main distribution lines in the engine burst area. If the pressure difference between the lines is more than 3 psi (0.2 bar), the SW energizes the applicable main distribution SOV, which closes.
G7108471 - G3RT1TU - FM35D3000000001
RISER LINE SOVs The riser lines SOVs are installed in the engine burst area: - on the riser lines at FR 37.2, 40.1, 46, 53.1 and 53.9, - on the fall lines at FR 38, 41, 49 and 53.4. They are installed immediately after the connection with the main supply line. The riser line SOVs are pneumatically controlled so that oxygen is not supplied to a damaged riser line. In normal operation, the riser line SOVs are open. They close if the flow increases more than 0.42 kg. min (0.9259 lb. min). A valve will stay closed until the pressure difference across the valve is less than 14.5037 psi (1 bar).
CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) 35 - OXYGEN
ENGER GASEOUS OXYGEN SYSTEM D/O (3)
Nov 20, 2008 Page 12
G7108471 - G3RT1TU - FM35D3000000001
A330-200/300 TECHNICAL TRAINING MANUAL
ENGINE BURST - DIFFERENTIAL PRESSURE SWITCH & RISER LINE SOVS CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) 35 - OXYGEN
ENGER GASEOUS OXYGEN SYSTEM D/O (3)
Nov 20, 2008 Page 13
A330-200/300 TECHNICAL TRAINING MANUAL
ENGER GASEOUS OXYGEN SYSTEM D/O (3) DOOR/OXY ECAM PAGE
G7108471 - G3RT1TU - FM35D3000000001
The next slide introduces indicating concerning the enger oxygen system on the DOOR/OXY ECAM page.
CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) 35 - OXYGEN
ENGER GASEOUS OXYGEN SYSTEM D/O (3)
Nov 20, 2008 Page 14
G7108471 - G3RT1TU - FM35D3000000001
A330-200/300 TECHNICAL TRAINING MANUAL
DOOR/OXY ECAM PAGE CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) 35 - OXYGEN
ENGER GASEOUS OXYGEN SYSTEM D/O (3)
Nov 20, 2008 Page 15
A330-200/300 TECHNICAL TRAINING MANUAL
ENGER GASEOUS OXYGEN SYSTEM D/O (3) CMC MESSAGES AND BITE FAILURE MESSAGE TO THE CMC The applicable message is sent to the CMC if: - the QCCU fails, - a pressure transducer fails, - the temperature transducer fails, - one or more oxygen regulator or the main distribution SOVs is not in the correct position, - both main distribution SOVs are closed, - the pressure after the pressure reducers is too low, - the low pressure SW fails.
TEST/BITE
G7108471 - G3RT1TU - FM35D3000000001
The QCCU has power up test and a continuous test. It checks: - the pressure transmitters, - the temperature transducer, - the QCCU.
CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) 35 - OXYGEN
ENGER GASEOUS OXYGEN SYSTEM D/O (3)
Nov 20, 2008 Page 16
G7108471 - G3RT1TU - FM35D3000000001
A330-200/300 TECHNICAL TRAINING MANUAL
CMC MESSAGES AND BITE - FAILURE MESSAGE TO THE CMC & TEST/BITE CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) 35 - OXYGEN
ENGER GASEOUS OXYGEN SYSTEM D/O (3)
Nov 20, 2008 Page 17
A330-200/300 TECHNICAL TRAINING MANUAL
ENGER GASEOUS OXYGEN SYSTEM D/O (3) QCCU TEST There is a warning light on the QCCU for each of the faults. The related light (PRESSURE, COMPUTER or TEMPERATURE) comes on when a fault occurs. If the fault is corrected, the light stays on until the QCCU is reset or the power is switched off. The QCCU has a TEST P/B to test the lights on the unit.
G7108471 - G3RT1TU - FM35D3000000001
NOTE: Before you do a test, you must pull out the door stops and turn them to 90 degrees. This makes sure that the oxygen masks do not fall out. To make sure that a door latch assembly releases the door, you can do a ground test with the manual release tool. To make sure that the pneumatic latches operate correctly; you can do a functional test with the MANual ON P/BSW. After a functional test, you must also release the pressure from the system through the bleed/vent valve. After a test, you must close the doors, turn the doors stops to 90 degrees and release them. After a functional test, you must push the RESET P/BSW to set the system back to initial.
CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) 35 - OXYGEN
ENGER GASEOUS OXYGEN SYSTEM D/O (3)
Nov 20, 2008 Page 18
G7108471 - G3RT1TU - FM35D3000000001
A330-200/300 TECHNICAL TRAINING MANUAL
QCCU TEST CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) 35 - OXYGEN
ENGER GASEOUS OXYGEN SYSTEM D/O (3)
Nov 20, 2008 Page 19
AIRBUS S.A.S. 31707 BLAGNAC cedex, STM REFERENCE G7108471 NOVEMBER 2008 PRINTED IN AIRBUS S.A.S. 2008 ALL RIGHTS RESERVED AN EADS COMPANY
This document must be used for training purposes only
Under no circumstances should this document be used as a reference
It will not be updated.
All rights reserved No part of this manual may be reproduced in any form, by photostat, microfilm, retrieval system, or any other means, without the prior written permission of AIRBUS S.A.S.
AIRBUS Environmental Recommendation Please consider your environmental responsability before printing this document.
A330-200/300 TECHNICAL TRAINING MANUAL
OXYGEN ENGER OXYGEN
G7108471 - G3RT1TU
enger Gaseous Oxygen System D/O (3) . . . . . . . . . . . . . . . . . . . . 2
CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) 35 - OXYGEN
TABLE OF CONTENTS
Nov 21, 2008 Page 1
A330-200/300 TECHNICAL TRAINING MANUAL
ENGER GASEOUS OXYGEN SYSTEM D/O (3) GENERAL
G7108471 - G3RT1TU - FM35D3000000001
The cabin fixed oxygen system supplies (automatically or manually controlled) oxygen to the occupants, in case of cabin depressurization. The system stores its oxygen in interconnected cylinders (5 up to 18), behind the right hand sidewall lining in the forward cargo compartment. The oxygen goes to the mask containers in the cabin, via two main supply lines and a network of pipes. The containers are above the enger seats, in the lavatories, in each galley, at each cabin crew station and if installed (option) in Flight Crew Rest Compartment (FCRC) and Bulk Crew Rest Compartment (BCRC). Each container has 2, 3, 4 or 5 masks. Two oxygen regulators control the flow rate. The Quantity Calculation and Control Unit (QCCU) supplies the value of the average temperature compensated pressure indicated on the ECAM system page, and a not temperature compensated to the oxygen servicing .
CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) 35 - OXYGEN
ENGER GASEOUS OXYGEN SYSTEM D/O (3)
Nov 20, 2008 Page 2
G7108471 - G3RT1TU - FM35D3000000001
A330-200/300 TECHNICAL TRAINING MANUAL
GENERAL CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) 35 - OXYGEN
ENGER GASEOUS OXYGEN SYSTEM D/O (3)
Nov 20, 2008 Page 3
A330-200/300 TECHNICAL TRAINING MANUAL
ENGER GASEOUS OXYGEN SYSTEM D/O (3) MAIN COMPONENTS OXYGEN STORAGE The enger gaseous emergency oxygen is contained in the enger oxygen storage system. The emergency oxygen is kept in the oxygen cylinders (nominal pressure 1850 psi (127 bars) at 21°C. The Pressure Reducer outlet is nominally 130 psi. The storage system also lets you fill the cylinder assemblies. OVERPRESSURE PROTECTION: - Cylinder pressure above 2770 psi (191 bar), a Safety Disk shears and the related cylinder empties overboard. - Pressure in the low pressure system above 233 psi (16 bar), an independent Pressure Relief Valve relieves the excess of pressure overboard. In all cases, the green indicator is blown out.
DISTRIBUTION When the enger oxygen distribution system is operated, the pressure reducer supplies low-pressure oxygen via two electro-pneumatic oxygen regulators to the two main supply lines. One line is installed below the cabin floor along the RH side of the aircraft This makes sure that sufficient oxygen is available for the engers and the cabin crew if one of the supply lines is damaged in case of engine burst. The enger oxygen distribution system supplies emergency oxygen to each oxygen container above the enger seats, in the lavatories, at the cabin attendant stations and optionally the crew rest rooms. The system is only pressurized in an emergency. Flexible hoses connect the emergency oxygen containers to the supply system.
OXYGEN CONTROL AND INDICATING
G7108471 - G3RT1TU - FM35D3000000001
The enger oxygen control can be done either: - automatically when the cabin altitude exceeds 14000 ft (altitude switch) - or manually from the MASK MAN ON switch. NOTE: The oxygen container door can be mechanically unlatched by means of a manual release tool. Information about the condition of the enger oxygen system is given on: - the ECAM, - the OXYGEN 211VU and the maintenance 285VU. - the MCDU and QCCU front face.
CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) 35 - OXYGEN
ENGER GASEOUS OXYGEN SYSTEM D/O (3)
Nov 20, 2008 Page 4
G7108471 - G3RT1TU - FM35D3000000001
A330-200/300 TECHNICAL TRAINING MANUAL
MAIN COMPONENTS - OXYGEN STORAGE ... DISTRIBUTION CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) 35 - OXYGEN
ENGER GASEOUS OXYGEN SYSTEM D/O (3)
Nov 20, 2008 Page 5
A330-200/300 TECHNICAL TRAINING MANUAL
ENGER GASEOUS OXYGEN SYSTEM D/O (3) OPERATION BEFORE OPERATION
G7108471 - G3RT1TU - FM35D3000000001
The pressure reducer reduces the bottle pressure, from 1850 psi to 130 psi. The two oxygen regulators are closed. The two main distribution Shut-Off Valves (SOVs) are open. The bleed ventilation valve is open, to avoid a risk of pressure build up, or to cause the unlatching of the door.
CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) 35 - OXYGEN
ENGER GASEOUS OXYGEN SYSTEM D/O (3)
Nov 20, 2008 Page 6
G7108471 - G3RT1TU - FM35D3000000001
A330-200/300 TECHNICAL TRAINING MANUAL
OPERATION - BEFORE OPERATION CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) 35 - OXYGEN
ENGER GASEOUS OXYGEN SYSTEM D/O (3)
Nov 20, 2008 Page 7
A330-200/300 TECHNICAL TRAINING MANUAL
ENGER GASEOUS OXYGEN SYSTEM D/O (3) OPERATION (continued)
G7108471 - G3RT1TU - FM35D3000000001
DURING OPERATION When the cabin pressure decreases to a pressure equivalent to 14.000 ft (4267 m) (+250/-750ft) the altitude pressure switch will close. This action operates the emergency oxygen system. If the altitude pressure switch does not operate, you can operate the MANual ON P/BSW on the OXYGEN , located on the overhead . The oxygen regulators are energized, delivering a flow as a function of the cabin altitude. The ENGER SYS ON light comes on, and the tape announcement is started. The air caught in the distribution lines is bled through the open bleed/ventilation valve during 5 seconds, and then this valve closes. The oxygen pressure builds up. The pneumatically controlled door latches let the oxygen container doors open and the masks fall down. The enger pulls the mask to his face, which releases the oxygen flow release pin. Oxygen is supplied to the mask. An oxygen flow indication, which is the green part of the mask reservoir bag, inflates. The Oxygen regulators are designed to supply a continuous flow of oxygen up to 556 masks (depending the version of aircraft). The oxygen regulator is made of two parts: - A pressure-regulation unit - A shut-off valve The pressure-regulation unit operates pneumatically in two operation modes. -Surge mode: The surge pressure of 50 psi (3.4 bar) to 124 psi (8.6 bar) releases the oxygen/air mixture through the bleed/vent valve. After this there is no more air in the oxygen-distribution lines, but only oxygen. This surge of pressure also unlatches the mask container CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) 35 - OXYGEN
doors and makes oxygen available to the mask when de pressure is 21 psi (1.5 bar) and 43 psi (3.0 bar). -Distribution mode: A continuous flow of oxygen is supplied to the masks at a suitable pressure based on the cabin altitude, between 6.4 psi (0.44 bar) at 10 000ft and 98.4 psi (6.8 bar) at 40 000ft. The shut-off valve operates electrically. It has two electrical inputs, one to open the valve, one to close it (at reset). Each shut-off valve also has two electrical switches: - The ''valve fully open'' switch, which operates the ''SYS ON'' light. - The ''valve not fully closed'' switch, which possibly triggers a warning in case of disagreement between the valve position and the selection. A test port is given for ground level simulation of high altitudes using a vacuum source. By using this method, the oxygen pressure schedule can be verified without removing the unit from the aircraft.
ENGER GASEOUS OXYGEN SYSTEM D/O (3)
Nov 20, 2008 Page 8
G7108471 - G3RT1TU - FM35D3000000001
A330-200/300 TECHNICAL TRAINING MANUAL
OPERATION - DURING OPERATION CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) 35 - OXYGEN
ENGER GASEOUS OXYGEN SYSTEM D/O (3)
Nov 20, 2008 Page 9
A330-200/300 TECHNICAL TRAINING MANUAL
ENGER GASEOUS OXYGEN SYSTEM D/O (3) RESET RESET OPERATION To set the system back to the initial configuration, the RESET P/BSW on the maintenance is pushed: - the electrical circuit is set to the initial condition, - the oxygen regulators close, - the main distribution SOVs open, if they are closed. The RESET P/BSW operates only if the cabin pressure is below 10.000 ft. NOTE: Note: the Bleed/Vent Valve opens mechanically.
RESET INDICATING The RESET ON light goes off when the reset is completed (3 seconds). The ENGER SYS ON light goes off.
G7108471 - G3RT1TU - FM35D3000000001
RESET FAILURE The ON light in the RESET P/BSW, on the maintenance 285VU will not go off and the FAULT light comes on if: - the electrical circuit for the gaseous system does not return to the initial condition. The warning REGUL LO PR will be shown on the ECAM if: - the gaseous system does not return to the normal condition after you push the RESET P/BSW, - one of the oxygen regulators is not fully closed, - one of the main distribution SOVs is not fully open, - both main distribution SOVs close when the system has been operated.
CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) 35 - OXYGEN
ENGER GASEOUS OXYGEN SYSTEM D/O (3)
Nov 20, 2008 Page 10
G7108471 - G3RT1TU - FM35D3000000001
A330-200/300 TECHNICAL TRAINING MANUAL
RESET - RESET OPERATION ... RESET FAILURE CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) 35 - OXYGEN
ENGER GASEOUS OXYGEN SYSTEM D/O (3)
Nov 20, 2008 Page 11
A330-200/300 TECHNICAL TRAINING MANUAL
ENGER GASEOUS OXYGEN SYSTEM D/O (3) ENGINE BURST If an engine turbine bursts and damages a main oxygen supply line: - the differential pressure SW sends a signal to the appropriate main distribution SOV, - the appropriate main distribution SOV closes, - the non-return valve will stop the oxygen supply to the related main supply line, The riser line SOVs will stop the oxygen supply to a damaged riser or fall line.
DIFFERENTIAL PRESSURE SWITCH The differential pressure SW compares the pressure in the two main distribution lines in the engine burst area. If the pressure difference between the lines is more than 3 psi (0.2 bar), the SW energizes the applicable main distribution SOV, which closes.
G7108471 - G3RT1TU - FM35D3000000001
RISER LINE SOVs The riser lines SOVs are installed in the engine burst area: - on the riser lines at FR 37.2, 40.1, 46, 53.1 and 53.9, - on the fall lines at FR 38, 41, 49 and 53.4. They are installed immediately after the connection with the main supply line. The riser line SOVs are pneumatically controlled so that oxygen is not supplied to a damaged riser line. In normal operation, the riser line SOVs are open. They close if the flow increases more than 0.42 kg. min (0.9259 lb. min). A valve will stay closed until the pressure difference across the valve is less than 14.5037 psi (1 bar).
CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) 35 - OXYGEN
ENGER GASEOUS OXYGEN SYSTEM D/O (3)
Nov 20, 2008 Page 12
G7108471 - G3RT1TU - FM35D3000000001
A330-200/300 TECHNICAL TRAINING MANUAL
ENGINE BURST - DIFFERENTIAL PRESSURE SWITCH & RISER LINE SOVS CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) 35 - OXYGEN
ENGER GASEOUS OXYGEN SYSTEM D/O (3)
Nov 20, 2008 Page 13
A330-200/300 TECHNICAL TRAINING MANUAL
ENGER GASEOUS OXYGEN SYSTEM D/O (3) DOOR/OXY ECAM PAGE
G7108471 - G3RT1TU - FM35D3000000001
The next slide introduces indicating concerning the enger oxygen system on the DOOR/OXY ECAM page.
CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) 35 - OXYGEN
ENGER GASEOUS OXYGEN SYSTEM D/O (3)
Nov 20, 2008 Page 14
G7108471 - G3RT1TU - FM35D3000000001
A330-200/300 TECHNICAL TRAINING MANUAL
DOOR/OXY ECAM PAGE CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) 35 - OXYGEN
ENGER GASEOUS OXYGEN SYSTEM D/O (3)
Nov 20, 2008 Page 15
A330-200/300 TECHNICAL TRAINING MANUAL
ENGER GASEOUS OXYGEN SYSTEM D/O (3) CMC MESSAGES AND BITE FAILURE MESSAGE TO THE CMC The applicable message is sent to the CMC if: - the QCCU fails, - a pressure transducer fails, - the temperature transducer fails, - one or more oxygen regulator or the main distribution SOVs is not in the correct position, - both main distribution SOVs are closed, - the pressure after the pressure reducers is too low, - the low pressure SW fails.
TEST/BITE
G7108471 - G3RT1TU - FM35D3000000001
The QCCU has power up test and a continuous test. It checks: - the pressure transmitters, - the temperature transducer, - the QCCU.
CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) 35 - OXYGEN
ENGER GASEOUS OXYGEN SYSTEM D/O (3)
Nov 20, 2008 Page 16
G7108471 - G3RT1TU - FM35D3000000001
A330-200/300 TECHNICAL TRAINING MANUAL
CMC MESSAGES AND BITE - FAILURE MESSAGE TO THE CMC & TEST/BITE CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) 35 - OXYGEN
ENGER GASEOUS OXYGEN SYSTEM D/O (3)
Nov 20, 2008 Page 17
A330-200/300 TECHNICAL TRAINING MANUAL
ENGER GASEOUS OXYGEN SYSTEM D/O (3) QCCU TEST There is a warning light on the QCCU for each of the faults. The related light (PRESSURE, COMPUTER or TEMPERATURE) comes on when a fault occurs. If the fault is corrected, the light stays on until the QCCU is reset or the power is switched off. The QCCU has a TEST P/B to test the lights on the unit.
G7108471 - G3RT1TU - FM35D3000000001
NOTE: Before you do a test, you must pull out the door stops and turn them to 90 degrees. This makes sure that the oxygen masks do not fall out. To make sure that a door latch assembly releases the door, you can do a ground test with the manual release tool. To make sure that the pneumatic latches operate correctly; you can do a functional test with the MANual ON P/BSW. After a functional test, you must also release the pressure from the system through the bleed/vent valve. After a test, you must close the doors, turn the doors stops to 90 degrees and release them. After a functional test, you must push the RESET P/BSW to set the system back to initial.
CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) 35 - OXYGEN
ENGER GASEOUS OXYGEN SYSTEM D/O (3)
Nov 20, 2008 Page 18
G7108471 - G3RT1TU - FM35D3000000001
A330-200/300 TECHNICAL TRAINING MANUAL
QCCU TEST CMQ - SA family to A330-200/300 - T1 (Lvl 2&3) (GE CF6) 35 - OXYGEN
ENGER GASEOUS OXYGEN SYSTEM D/O (3)
Nov 20, 2008 Page 19
AIRBUS S.A.S. 31707 BLAGNAC cedex, STM REFERENCE G7108471 NOVEMBER 2008 PRINTED IN AIRBUS S.A.S. 2008 ALL RIGHTS RESERVED AN EADS COMPANY
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