DOC AIRBUS | AMM A320FOXYGEN STORAGE - DESCRIPTION AND OPERATION
** ON A/C NOT FOR ALL
** ON A/C NOT FOR ALL
** ON A/C NOT FOR ALL
1. General
The passenger oxygen is supplied from chemical oxygen generators that are installed in emergency oxygen containers. The emergency oxygen containers are installed:
** ON A/C NOT FOR ALL The passenger oxygen is supplied from chemical oxygen generators that are installed in emergency oxygen containers. The emergency oxygen containers are installed:
- Above the passenger seats
- At the cabin attendant stations
- In the lavatories
- At the cabin attendant working areas.
- Chemical oxygen generators that are installed in the emergency oxygen containers. The emergency oxygen containers are installed above the passenger seats, at the cabin attendant stations and at the cabin attendant working areas.
- Oxygen cylinders that are installed in the decentralized gaseous-oxygen containers (DGOC). DGOC are installed in the lavatories.
2. Component Location
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| FIN | FUNCTIONAL DESIGNATION | PANEL|ZONE|ACCESS | ATA |
| | | | | DOOR | REF. |
| ------------------------------------------------------------------------------- |
| Oxygen Container 200 35-23-00 |
3. Component Description
Emergency Oxygen Container - Stowed ** ON A/C NOT FOR ALL
Emergency Oxygen Container - Stowed ** ON A/C NOT FOR ALL
Emergency Oxygen Container - Stowed ** ON A/C NOT FOR ALL
Emergency Oxygen Container - Stowed ** ON A/C NOT FOR ALL
Emergency Oxygen Container - Stowed ** ON A/C NOT FOR ALL Emergency Oxygen Container - Stowed ** ON A/C NOT FOR ALL Emergency Oxygen Container - Stowed ** ON A/C NOT FOR ALL Emergency Oxygen Container - Stowed ** ON A/C NOT FOR ALL A. Emergency Oxygen Container (Chemical)
(1) Chemical Oxygen Generator
The chemical oxygen generator has a sodium-chlorate core installed in a stainless-steel housing. Thermal insulating material is used between the core and the housing.
The actuator of the chemical generator is a spring-loaded striker and a percussion cap installed in the ignition assembly. A release pin holds the striker away from the cap. A lanyard connects the release pin to the oxygen mask.
A filter assembly is installed in the outlet end of the housing to prevent the contamination of the oxygen supply.
A flexible hose connects the oxygen mask to the outlet manifold and the outlet valve supplies oxygen to the oxygen mask. The outlet is installed on the housing.
A relief valve is installed at the outlet end of the housing. This will prevent a high-pressure build-up, if a failure of the outlet valve occurs.
An indicator on the housing will change its color, from yellow to black or from pink to blue, when the chemical oxygen generator is used and the generator is no longer usable.
The chemical oxygen generator has a sodium-chlorate core installed in a stainless-steel housing. Thermal insulating material is used between the core and the housing.
The actuator of the chemical generator is a spring-loaded striker and a percussion cap installed in the ignition assembly. A release pin holds the striker away from the cap. A lanyard connects the release pin to the oxygen mask.
A filter assembly is installed in the outlet end of the housing to prevent the contamination of the oxygen supply.
A flexible hose connects the oxygen mask to the outlet manifold and the outlet valve supplies oxygen to the oxygen mask. The outlet is installed on the housing.
A relief valve is installed at the outlet end of the housing. This will prevent a high-pressure build-up, if a failure of the outlet valve occurs.
An indicator on the housing will change its color, from yellow to black or from pink to blue, when the chemical oxygen generator is used and the generator is no longer usable.
(2) Chemical Oxygen Generator
The chemical oxygen generator has a sodium-chlorate core installed in a stainless-steel housing. It has an outlet manifold with two or more fittings for the connection of the mask supply tubes.
The actuator of the chemical oxygen generator is a firing pin installed in the ignition assembly. A release pin holds the firing pin and lanyards connect the release pin to the oxygen masks.
A flexible hose connects the oxygen mask to the outlet manifold and the outlet valve supplies oxygen to the oxygen mask. The outlet is installed on the housing.
A relief valve is installed at the outlet end of the housing. This will prevent a high-pressure build-up, if a failure of the outlet valve occurs.
An indicator on the housing will change its color from pink to blue when the chemical oxygen generator is used and it is no longer usable.
The chemical oxygen generator has a sodium-chlorate core installed in a stainless-steel housing. It has an outlet manifold with two or more fittings for the connection of the mask supply tubes.
The actuator of the chemical oxygen generator is a firing pin installed in the ignition assembly. A release pin holds the firing pin and lanyards connect the release pin to the oxygen masks.
A flexible hose connects the oxygen mask to the outlet manifold and the outlet valve supplies oxygen to the oxygen mask. The outlet is installed on the housing.
A relief valve is installed at the outlet end of the housing. This will prevent a high-pressure build-up, if a failure of the outlet valve occurs.
An indicator on the housing will change its color from pink to blue when the chemical oxygen generator is used and it is no longer usable.
(3) Continuous-Flow Oxygen Mask
The oxygen mask has a face cone with a reservoir bag attached to it. The inhale, exhale and diluter valves are installed in the face cone.
A flow indicator is installed in the flexible hose which is connected to the oxygen mask. The flow indicator will show a green color when there is an oxygen flow.
The oxygen mask has a face cone with a reservoir bag attached to it. The inhale, exhale and diluter valves are installed in the face cone.
A flow indicator is installed in the flexible hose which is connected to the oxygen mask. The flow indicator will show a green color when there is an oxygen flow.
(4) Door and Latch Assembly
The electrical latch assembly holds the door of the emergency oxygen container closed. Spring pressure will open the door when the electrical latch assembly is electrically released.
A test button is installed in the emergency oxygen container to let you do an inspection and a test of the emergency oxygen container. The test button is pulled and turned 90 degrees to let the door open some degrees. The oxygen masks will not fall out.
To open the door manually, you can release the electrical latch assembly with a manual release tool.
The electrical latch assembly holds the door of the emergency oxygen container closed. Spring pressure will open the door when the electrical latch assembly is electrically released.
A test button is installed in the emergency oxygen container to let you do an inspection and a test of the emergency oxygen container. The test button is pulled and turned 90 degrees to let the door open some degrees. The oxygen masks will not fall out.
To open the door manually, you can release the electrical latch assembly with a manual release tool.
(5) Door and Actuator Assembly
The electrical actuator assembly holds the door of the emergency oxygen container closed. Spring pressure will open the door when the electrical actuator assembly is electrically released.
A test button is installed in the emergency oxygen container to let you do an inspection and a test of the emergency oxygen container. The test button is pushed 90 degrees to the door surface to let the door open some degrees. The oxygen masks will not fall out.
To open the door manually, you can release the electrical latch assembly with a manual release tool.
The electrical actuator assembly holds the door of the emergency oxygen container closed. Spring pressure will open the door when the electrical actuator assembly is electrically released.
A test button is installed in the emergency oxygen container to let you do an inspection and a test of the emergency oxygen container. The test button is pushed 90 degrees to the door surface to let the door open some degrees. The oxygen masks will not fall out.
To open the door manually, you can release the electrical latch assembly with a manual release tool.
(6) Door and Latch Assembly
The electrical latch assembly holds the door of the emergency oxygen container closed. Spring pressure will open the door when the electrical latch assembly is electrically released.
A test button is installed in the emergency oxygen container to let you do an inspection and a test of the emergency oxygen container. The test button in the test position let the door open some degrees. The oxygen masks will not fall out.
To open the door manually, you can release the electrical latch assembly with a manual release tool.
The electrical latch assembly holds the door of the emergency oxygen container closed. Spring pressure will open the door when the electrical latch assembly is electrically released.
A test button is installed in the emergency oxygen container to let you do an inspection and a test of the emergency oxygen container. The test button in the test position let the door open some degrees. The oxygen masks will not fall out.
To open the door manually, you can release the electrical latch assembly with a manual release tool.
B. Emergency Oxygen Container with Oxygen Cylinder Assembly
Decentralized Gaseous Oxygen-Container ** ON A/C NOT FOR ALL
Decentralized Gaseous Oxygen-Container ** ON A/C NOT FOR ALL
Decentralized gaseous oxygen-containers are installed in lavatories. Oxygen cylinder assembly is a source of oxygen in these containers. During decompression it supplies oxygen to passengers or crew members for 15 minutes.
Decentralized gaseous oxygen-container must be replaced with a new one if:
Decentralized Gaseous Oxygen-Container ** ON A/C NOT FOR ALL Decentralized Gaseous Oxygen-Container ** ON A/C NOT FOR ALL Decentralized gaseous oxygen-container must be replaced with a new one if:
- There was decompression and passengers or crew members used it.
- Oxygen cylinder assembly released oxygen when its pressure increased over safety limit.
(1) Oxygen Cylinder Assembly
Oxygen cylinder assembly is a source of oxygen for two oxygen masks. It has a stainless-steel oxygen cylinder and an actuator assembly.
The stainless-steel oxygen cylinder contains from 3000 psi (206.8427 bar) to 3065 psi (211.3243 bar) of pressurized oxygen at 21 deg.C (69.80 deg.F).
The actuator assembly is installed on oxygen cylinder. It has:
Oxygen cylinder assembly is a source of oxygen for two oxygen masks. It has a stainless-steel oxygen cylinder and an actuator assembly.
The stainless-steel oxygen cylinder contains from 3000 psi (206.8427 bar) to 3065 psi (211.3243 bar) of pressurized oxygen at 21 deg.C (69.80 deg.F).
The actuator assembly is installed on oxygen cylinder. It has:
- Activation lanyard
- Internal pin
- Lance
- Rupture disk
- Outlet port
- Depletion port.
(2) Continuous-Flow Oxygen Mask
The oxygen mask has a face cone with a reservoir bag attached to it. The inhale, exhale and diluter valves are installed on the face cone.
Flexible hose supplies oxygen from manifold to reservoir bag.
A flow indicator is installed on the flexible hose. It shows a green color when the oxygen flows to the mask.
The oxygen mask has a face cone with a reservoir bag attached to it. The inhale, exhale and diluter valves are installed on the face cone.
Flexible hose supplies oxygen from manifold to reservoir bag.
A flow indicator is installed on the flexible hose. It shows a green color when the oxygen flows to the mask.
(3) Door and Latch Assembly
The electrical latch assembly holds the door of the emergency oxygen container closed. Spring pressure will open the door when the electrical latch assembly is electrically released.
A test button is installed in the emergency oxygen container to let you do an inspection and a test of the emergency oxygen container. If you push the right side of the test button to set it 90 degrees to door surface (test position), oxygen container's door will open only a few degrees after activation of the oxygen system. The oxygen masks will not fall out.
If the oxygen pressure increases above safety limit, the oxygen cylinder assembly releases oxygen. During this process oxygen flow turns the test button to test position and ejects pressure loss indicator.
To open the door manually, you can release the electrical latch assembly with a manual release tool.
The electrical latch assembly holds the door of the emergency oxygen container closed. Spring pressure will open the door when the electrical latch assembly is electrically released.
A test button is installed in the emergency oxygen container to let you do an inspection and a test of the emergency oxygen container. If you push the right side of the test button to set it 90 degrees to door surface (test position), oxygen container's door will open only a few degrees after activation of the oxygen system. The oxygen masks will not fall out.
If the oxygen pressure increases above safety limit, the oxygen cylinder assembly releases oxygen. During this process oxygen flow turns the test button to test position and ejects pressure loss indicator.
To open the door manually, you can release the electrical latch assembly with a manual release tool.
(4) Door and Latch Assembly
The electrical latch assembly holds the door of the emergency oxygen container closed. Spring pressure will open the door when the electrical latch assembly is electrically released.
A test button is installed in the emergency oxygen container to let you do an inspection and a test of the emergency oxygen container. The test button is pulled and turned 90 degrees to let the door open some degrees. The oxygen masks will not fall out.
If the oxygen pressure increases above safety limit, the oxygen cylinder assembly releases oxygen. During this process, oxygen flow turns the test button to test position and ejects the pressure loss indicator.
To open the door manually, you can release the electrical latch assembly with a manual release tool.
The electrical latch assembly holds the door of the emergency oxygen container closed. Spring pressure will open the door when the electrical latch assembly is electrically released.
A test button is installed in the emergency oxygen container to let you do an inspection and a test of the emergency oxygen container. The test button is pulled and turned 90 degrees to let the door open some degrees. The oxygen masks will not fall out.
If the oxygen pressure increases above safety limit, the oxygen cylinder assembly releases oxygen. During this process, oxygen flow turns the test button to test position and ejects the pressure loss indicator.
To open the door manually, you can release the electrical latch assembly with a manual release tool.
4. Operation
A. Emergency Oxygen Container (Chemical)
Emergency Oxygen Container - Operated ** ON A/C NOT FOR ALL
Emergency Oxygen Container - Operated. ** ON A/C NOT FOR ALL
Emergency Oxygen Container - Operated ** ON A/C NOT FOR ALL
When the door latch gets an electrical signal from the oxygen control and actuation circuit (Ref. AMM D/O 35-23-00-00) the doors of the emergency oxygen containers will open. The oxygen masks will fall out and hang on lanyards near to the person who will use it. In the lavatories, door areas and above sleeper seats (passengers sitting or lying) the pull flags can be connected to the oxygen mask. These flags help the passengers or crew members to get the oxygen mask.
The passengers or crew members pull the oxygen mask to their face. This action makes the lanyard pull a release pin from the striker assembly of the chemical oxygen generator.
The striker assembly hits the percussion cap and starts the supply of oxygen. The oxygen will flow through the flexible supply hoses to the oxygen mask. A flow indicator (located in the supply hose) will show a green color when the oxygen flows through it.
The chemical oxygen generators will supply a flow of low pressure oxygen for a minimum time of 15 minutes.
When the door latch gets an electrical signal from the oxygen control and actuation circuit (Ref. AMM D/O 35-23-00-00), the doors of the emergency oxygen containers will open. The oxygen masks will fall out of the containers and hang on the lanyards near the person who will use it. In the door areas and above the passenger seats, the emergency oxygen containers can have the pull flags. These pull flags help the passengers or the crew members to get the oxygen masks. The passengers or the crew members pull the oxygen masks to their faces. This makes the lanyard to pull a release pin installed on the firing pin of the chemical oxygen generator.
The firing pin moves into the oxygen generator. This causes the ignition and the reaction of the chemicals in the oxygen generator and starts the supply of the oxygen. The oxygen will flow through the flexible supply hoses to the oxygen masks. A flow indicator (installed in the supply hose) will show a green color when the oxygen flows through it.
The chemical oxygen generator will supply a flow of low pressure oxygen for a minimum time of 15 minutes.
Emergency Oxygen Container - Operated ** ON A/C NOT FOR ALL Emergency Oxygen Container - Operated. ** ON A/C NOT FOR ALL Emergency Oxygen Container - Operated ** ON A/C NOT FOR ALL When the door latch gets an electrical signal from the oxygen control and actuation circuit (Ref. AMM D/O 35-23-00-00) the doors of the emergency oxygen containers will open. The oxygen masks will fall out and hang on lanyards near to the person who will use it. In the lavatories, door areas and above sleeper seats (passengers sitting or lying) the pull flags can be connected to the oxygen mask. These flags help the passengers or crew members to get the oxygen mask.
The passengers or crew members pull the oxygen mask to their face. This action makes the lanyard pull a release pin from the striker assembly of the chemical oxygen generator.
The striker assembly hits the percussion cap and starts the supply of oxygen. The oxygen will flow through the flexible supply hoses to the oxygen mask. A flow indicator (located in the supply hose) will show a green color when the oxygen flows through it.
The chemical oxygen generators will supply a flow of low pressure oxygen for a minimum time of 15 minutes.
When the door latch gets an electrical signal from the oxygen control and actuation circuit (Ref. AMM D/O 35-23-00-00), the doors of the emergency oxygen containers will open. The oxygen masks will fall out of the containers and hang on the lanyards near the person who will use it. In the door areas and above the passenger seats, the emergency oxygen containers can have the pull flags. These pull flags help the passengers or the crew members to get the oxygen masks. The passengers or the crew members pull the oxygen masks to their faces. This makes the lanyard to pull a release pin installed on the firing pin of the chemical oxygen generator.
The firing pin moves into the oxygen generator. This causes the ignition and the reaction of the chemicals in the oxygen generator and starts the supply of the oxygen. The oxygen will flow through the flexible supply hoses to the oxygen masks. A flow indicator (installed in the supply hose) will show a green color when the oxygen flows through it.
The chemical oxygen generator will supply a flow of low pressure oxygen for a minimum time of 15 minutes.
B. Emergency Oxygen Container with Oxygen Cylinder Assembly
(1) Normal operation of emergency oxygen container with oxygen cylinder assembly:
When the door latch gets an electrical signal from the oxygen control and actuation circuit (Ref. AMM D/O 35-23-00-00), the oxygen masks will fall out and hang on lanyards near to the person who will use it. Pull flags are connected to oxygen masks to help passengers or crew members to get the oxygen masks.
The passenger or crew member pulls the oxygen mask to his/her face. When the activation lanyard is pulled, the internal pin goes up and releases the wave spring. The wave spring pushes lance which breaks the rupture disk. Then the oxygen flows through the outlet port and the manifold to the oxygen masks. The orifice assembly regulates the oxygen pressure.
When the door latch gets an electrical signal from the oxygen control and actuation circuit (Ref. AMM D/O 35-23-00-00), the oxygen masks will fall out and hang on lanyards near to the person who will use it. Pull flags are connected to oxygen masks to help passengers or crew members to get the oxygen masks.
The passenger or crew member pulls the oxygen mask to his/her face. When the activation lanyard is pulled, the internal pin goes up and releases the wave spring. The wave spring pushes lance which breaks the rupture disk. Then the oxygen flows through the outlet port and the manifold to the oxygen masks. The orifice assembly regulates the oxygen pressure.
(2) Safety operation of the emergency oxygen container with oxygen cylinder assembly:
Safety Operation of Emergency Oxygen Container ** ON A/C NOT FOR ALL
Safety Operation of Emergency Oxygen Container ** ON A/C NOT FOR ALL
If the pressure in the oxygen cylinder assembly increases above safety limits, the rupture disk will break automatically. The oxygen flows through the depletion port and the depletion tube to the depletion outlet. Pressure release process turns the test button into test position and ejects the pressure-loss indicator. Emergency oxygen container with visible pressure-loss indicator must be replaced with a new one.
Safety Operation of Emergency Oxygen Container ** ON A/C NOT FOR ALL Safety Operation of Emergency Oxygen Container ** ON A/C NOT FOR ALL 5. Ground Tests
A. Emergency Oxygen Container (Chemical)
Uses of the Manual Release Tool ** ON A/C NOT FOR ALL
Uses of the Manual Release Tool ** ON A/C NOT FOR ALL
To make sure that the doors of the emergency oxygen containers open, do a periodic ground test. To check that the electrical latches operate correctly, push MASK MAN ON pushbutton switch 14WR (Ref. AMM D/O 35-23-00-00). The oxygen masks do not fall out when you pull down the test buttons on the emergency containers and turn them 90 degrees to the test position. This lets the doors open some degrees during the ground test. After the test, close the doors and turn the test buttons 90 degrees to the initial position.
To make sure that the doors of the emergency oxygen containers open, you must do a periodic ground test. To check that the electrical latches operate correctly, push the MASK MAN ON pushbutton switch 14WR (Ref. AMM D/O 35-23-00-00). The oxygen masks do not fall out, if you push the left side of the test button on the door assembly of the emergency containers. Push the test button until the over-center spring keeps the lever of the test button at 90 degrees to the door surface. This lets the doors open some degrees when you do the ground test. After the test, close the doors and push the test button back to the initial position.
To make sure that the doors of the emergency oxygen containers open, do a periodic ground test. To check that the electrical latches operate correctly, push the MASK MAN ON pushbutton switch 14WR (Ref. AMM D/O 35-23-00-00). The oxygen masks do not fall out when you set the test buttons on the emergency containers to the test position.
To set the test button to the test position pull them down and turn them 90 degrees, or push the left side of the test button until the over-center spring keep it vertically. This lets the doors open some degrees during the ground test. After the test, close the doors and turn the test buttons to the initial position.
Uses of the Manual Release Tool ** ON A/C NOT FOR ALL Uses of the Manual Release Tool ** ON A/C NOT FOR ALL To make sure that the doors of the emergency oxygen containers open, you must do a periodic ground test. To check that the electrical latches operate correctly, push the MASK MAN ON pushbutton switch 14WR (Ref. AMM D/O 35-23-00-00). The oxygen masks do not fall out, if you push the left side of the test button on the door assembly of the emergency containers. Push the test button until the over-center spring keeps the lever of the test button at 90 degrees to the door surface. This lets the doors open some degrees when you do the ground test. After the test, close the doors and push the test button back to the initial position.
To make sure that the doors of the emergency oxygen containers open, do a periodic ground test. To check that the electrical latches operate correctly, push the MASK MAN ON pushbutton switch 14WR (Ref. AMM D/O 35-23-00-00). The oxygen masks do not fall out when you set the test buttons on the emergency containers to the test position.
To set the test button to the test position pull them down and turn them 90 degrees, or push the left side of the test button until the over-center spring keep it vertically. This lets the doors open some degrees during the ground test. After the test, close the doors and turn the test buttons to the initial position.
B. Emergency Oxygen Container with Oxygen Cylinder Assembly
To make sure that the doors of the emergency oxygen containers open, do a periodic ground test. To check that the electrical latches operate correctly, push the MASK MAN ON pushbutton switch 14WR (Ref. AMM D/O 35-23-00-00).
The oxygen masks do not fall out when you set the test buttons on the emergency containers to the test position. To set the test button to the test position, push its right side until the center spring holds it in place vertically. This lets the door open some degrees during the ground test. After the test, close the door and turn the test button to the initial position.
Manual release tool lets you open emergency oxygen container when:
The oxygen masks do not fall out when you pull down the test buttons on the emergency containers and turn them 90 degrees to the test position. This lets the doors open for some degrees during the ground test. After the test, close the doors and turn the test buttons 90 degrees to the initial position.
Manual release tool lets you open emergency oxygen container when:
To make sure that the doors of the emergency oxygen containers open, do a periodic ground test. To check that the electrical latches operate correctly, push the MASK MAN ON pushbutton switch 14WR (Ref. AMM D/O 35-23-00-00).
The oxygen masks do not fall out when you set the test buttons on the emergency containers to the test position. To set the test button to the test position, push its right side until the center spring holds it in place vertically. This lets the door open some degrees during the ground test. After the test, close the door and turn the test button to the initial position.
Manual release tool lets you open emergency oxygen container when:
- Electrical latch does not work correctly.
- You want to check only a few emergency oxygen containers.
The oxygen masks do not fall out when you pull down the test buttons on the emergency containers and turn them 90 degrees to the test position. This lets the doors open for some degrees during the ground test. After the test, close the doors and turn the test buttons 90 degrees to the initial position.
Manual release tool lets you open emergency oxygen container when:
- Electrical latch does not work correctly.
- You want to check only a few emergency oxygen containers.