-the check valve 7501WR1 or 7501WR2 stops the oxygen supply to the related
 main supply line. The riser-line shut-off valves 7514WR1 thru 7514WR4 stop the oxygen supply to a damaged riser or fall line.
 6. Bite Test_________
 A. System Test
 Before you do a test, you must pull out the door-stops and turn them through 90 degrees. This makes sure that the oxygen masks do not fall from the container.
 To make sure that a door latch assembly will release the door, you can do a ground test with the manual release tool.
 To make sure that the pneumatic latches operates correctly, you can do a functional test with the 'MAN ON' pushbutton switch.
 After a test you must close the doors and turn the door-stops through 90 degrees and release them.
 After a functional test you must push the 'RESET' pushbutton switch 13WR to set the system back to the normal condition.
 After a functional test you must also release the pressure in the system. You can decrease the pressure in the system much faster, if you release the pressure through the test port 7504WR3.

 CONTAINER - EMERGENCY OXYGEN, GASEOUS - REMOVAL/INSTALLATION
____________________________________________________________
 TASK 35-22-54-000-001
 Removal of the Emergency Oxygen Container
 1. Reason for the Job
__________________
 Self Explanatory
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific circuit breaker(s) safety clip(s) No specific 5 BAG - VINYL No specific 5 PLUG - BLANKING No specific 1 STEPLADDER 1.0 M (3.3 FT) No specific 1 WARNING NOTICE
 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
21-24-19-000-001 Removal of the Individual Air Outlet 4150 HM 24-42-00-861-001 Energize the Ground Service Network from the External Power 35-00-00-860-001 Special precautions when working on a Gaseous Oxygen
 System 35-22-54-991-001 Fig. 401 35-22-54-991-006 Fig. 402 35-22-54-991-002 Fig. 403 35-22-54-991-003 Fig. 404 35-22-54-991-004 Fig. 405 35-22-54-991-005 Fig. 406 FOR FIN 5028WR 25-23-45-000-005 Removal of the Door Frame Linings at the Left FWD
 Passenger/Crew Door FOR FIN 5040WR 25-23-45-000-002 Removal of the Door Frame Linings at the Right FWD
 Passenger/Crew Door -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------

FOR FIN 5036WR 25-23-45-000-004 Removal of the Door Frame Linings at the Right AFT Passenger/Crew Door
 3. Job Set-up
__________
 Subtask 35-22-54-861-050
 A. Energize the ground service network
 (Ref. TASK 24-42-00-861-001).

 Subtask 35-22-54-865-050
 B. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU OXYGEN/PASSENGER/CTL AND WARN 2WR HA03 49VU OXYGEN/PASSENGER/CTL AND WARN 1WR HA02
 Subtask 35-22-54-010-050
 C. Get Access
 (1)
 For the passenger service channels:

 (a) Open the individual air outlet 4150 HM (Ref. TASK 21-24-19-000-001).

 (2)
 For the lavatories and the aft utility area:

 (a) Put a STEPLADDER 1.0 M (3.3 FT) below the related emergency oxygen container.

 (3)
 Remove the door-frame lining panel:
 FOR 5028WR
 221HW (Ref. TASK 25-23-45-000-005).
 FOR 5040WR
 222HW (Ref. TASK 25-23-45-000-002).
 FOR 5036WR
 262KW (Ref. TASK 25-23-45-000-004).

 Subtask 35-22-54-941-050
 D. Safety Precautions
 (1) Put a WARNING NOTICE in position in the cockpit to tell persons not to operate the passenger oxygen system.
 4. Procedure
_________
 WARNING : KEEP ALL HYDROCARBONS (FUELS, LUBRICANTS, ETC.) AWAY FROM ALL

_______
 SOURCE OF OXYGEN. OXYGEN BECOMES EXPLOSIVE WHEN IT TOUCHES
 HYDROCARBONS.

 WARNING : CLEAN THE TOOLS AND MAKE SURE YOUR HANDS ARE CLEAN TO PREVENT
_______
 CONTAMINATION OF THE OXYGEN SYSTEM.

 CAUTION : PUT DRY, CLEAN, METAL OR PLASTIC PLUGS ON ALL PIPES OR UNITS
　
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