_______
 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.

 Subtask 35-22-65-420-051
 A. Installation of the Oxygen Test Port (7504WR3)
 (Ref. Fig. 402/TASK 35-22-65-991-002)

 (1)
 Do an inspection of the component interface and/or the adjacent area.

 (2)
 Remove the vinyl bags from the disconnected line ends.

 (3)
 Remove the blanking plugs from the disconnected line ends.

 (4)
 Put the oxygen test port (1) in position and tighten the nut (2) with your fingers.

 (5)
 TORQUE the nut (2) to between 1.92 and 2.03 m.daN (14.15 and 14.97 lbf.ft).

 NOTE : You must hold the fitting tightly in the correct position.
____ Subtask 35-22-65-865-055
 B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1WR, 2WR.
 Subtask 35-22-65-790-051
 C. Do this leakage check (Ref. TASK 35-23-00-790-002). Subtask 35-22-65-942-051
 D. Remove the warning notice(s).
 5. Close-up
________ Subtask 35-22-65-410-051
 A. Close Access
 (1) Make sure that the work area is clean and clear of tool(s) and other items.
 (2) Install the ceiling panel 231CC (Ref. TASK 25-23-41-400-001). Subtask 35-22-65-862-051
 B. De-energize the aircraft electrical circuits
 (Ref. TASK 24-41-00-862-002).

 CONTROL AND INDICATING - DESCRIPTION AND OPERATION
__________________________________________________
 1.
 General

_______ The passenger oxygen control and indicating system controls the operation of the passenger oxygen system.

 2.
 Component Location

__________________
 **ON A/C 001-049, 051-051, 056-056, 058-099, 101-149, 151-199, 201-299, 301-399,
 (Ref. Fig. 001)
 -------------------------------------------------------------------------------FIN | FUCTIONAL DESIGNATION | PANEL|ZONE|ACCESS| ATA | | | | DOOR | REF.
 -------------------------------------------------------------------------------8WR RELAY-BOARD ANN LT TEST & INTFC 103VU 126 822 9WR RELAY-SYS OFF 103VU 126 822
 10WR RELAY-PWR SUPPLY 103VU 126 824 12WR P/BSW-OXYGEN PASSENGER 21VU 211 831 13WR P/BSW-OXYGEN/TMR RESET 50VU 211 831 14WR P/BSW-OXYGEN/MASK MAN ON 21VU 211 831 16WR ALTITUDE PRESS SW 127 824 35-23-15 19WR RELAY PASS INFO 103VU 126 822
 **ON A/C 052-055, 057-057,
 (Ref. Fig. 001A)
 -------------------------------------------------------------------------------FIN | FUCTIONAL DESIGNATION | PANEL|ZONE|ACCESS| ATA | | | | DOOR | REF.
 -------------------------------------------------------------------------------8WR RELAY-BOARD ANN LT TEST & INTFC 103VU 126 822 9WR RELAY-SYS OFF 103VU 126 822
 10WR RELAY-PWR SUPPLY 103VU 126 824 12WR P/BSW-OXYGEN PASSENGER 21VU 211 831 13WR P/BSW-OXYGEN/TMR RESET 50VU 211 831 14WR P/BSW-OXYGEN/MASK MAN ON 21VU 211 831 16WR ALTITUDE PRESS SW 127 824 35-23-15 19WR RELAY PASS INFO 103VU 126 822
 899WR P/BSW-OXYGEN AHS ON 21VU 211 35-23-00

 Passenger Oxygen System - Control and Indicating

  Figure 001
 EFF : 101-149 001-049, 051-051, 056-056, 058-099, 35-23-00Config-1, 151-199, 201-299, 301-399,  Page 2 Aug 01/05
 CES 

 Passenger Oxygen System - Control and Indicating
 Figure 001A

 CES R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,

 3. System Description
__________________
 **ON A/C 001-049, 051-051, 056-056, 058-099, 101-149, 151-199, 201-299,
 301-399,

 (Ref. Fig. 002)
 **ON A/C 052-055, 057-057,
 (Ref. Fig. 002A)
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
 The manual controls and indications for the passenger oxygen system are on the overhead panel 21VU and on the maintenance panel 50VU.
 The altitude pressure switch 16WR (installed in the avionics compartment) starts the automatic operation of the passenger oxygen system. If the altitude pressure switch does not work, you can press the MASK MAN ON pushbutton switch 14WR.
 The TMR RESET pushbutton switch 13WR lets the pilot reset the controls after the operation of the system.
R **ON A/C 001-049, 051-099, 101-105, 151-199, 201-299,
 When the system starts to operate, the SYS ON indicator light 12WR comes on and a taped announcement starts.
　
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