A320飞机维护手册 AMM OXYGEN 氧气(122)

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 -push the PRE REC ANN. STOP membrane switch.
 22. At the electronic rack 103VU:
 -remove the wire from pin A2 and A3 of the relay socket.
 -install the SWITCH OFF relay 8WR.
 23. At the vacuum source:
-slowly decrease and hold the pressure to 14800 ft. (4500 m) for more than 30 sec.
24. At the vacuum source:
 -slowly increase the pressure to 0 ft. (0 m).
-
the On indicator light in the TMRRESET pushbutton switch comes on during the time the pushbutton is pushed.

 On the overhead panel 21VU:

 -
the SYS ON indicator light goes off.In the cabin:

-
the emergency announcements stop.

In the cabin at the first seatrow:
-
the door of the related oxygencontainer opens at 14000 +0 -500 ft.(4260 +0 -150m).

 On the overhead panel 21VU:

 -
the SYS ON indicator light comes on. In the cabin:

 -
the emergency announcements are heard.

 

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ACTION RESULT -------------------------------------------------------------------------------
25. On the maintenance panel 50VU: On the maintenance panel 50VU:

 -push the TMR RESET pushbutton switch.
26. On the FWD Attendant Panel (FAP) 120RH:
 -push the PRE REC ANN. STOP membrane switch.
 27. On the circuitbreaker panel 49VU:
 -close circuit breaker 2WR.
 - open circuit breaker 5WR and 6WR.
 28. In the cabin at the first and second seatrow:
 -close the doors of all related emergency oxygen containers.
 29. On the overhead panel 21VU:
-push and hold the MASK MAN ON pushbutton switch for more than 6 sec.
-
the On indicator light in the TMRRESET pushbutton switch comes on during the time the pushbutton is pushed.

 On the overhead panel 21VU:

 -
the SYS ON indicator light goes off.In the cabin:

-
the emergency announcements stop.

On the overhead panel 21VU:
-
the SYS ON indicator light comes on.

 In the cabin:

 -
the emergency announcements are heard.

 In the cabin at the first and second seatrow:

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ACTION RESULT -------------------------------------------------------------------------------
- some of the doors of the emergency
 oxygen containers open immidiately.
 - after approx. 6 sec. the doors of the
 remaining emergency oxygen containers
 open.
 - release the MASK MAN ON
 pushbutton switch.
 30. On the maintenance panel 50VU:  On the maintenance panel 50VU:
 - push the TMR RESET pushbutton  - the On indicator light in the TMR
 switch.  RESET pushbutton switch comes on
 during the time the pushbutton is
 pushed.
 On the overhead panel 21VU:
 - the SYS ON indicator light goes off.
 31. On the FWD Attendant Panel (FAP)  In the cabin:
 120RH:
 - push the PRE REC ANN. STOP  - the emergency announcements stop.
 membrane switch.
 32. In the cabin at the first and
 second seatrow:
 - close the doors of all related
 emergency oxygen containers.
 33. On circuitbreaker panel 49VU:
 - open circuit breaker 2WR.
 - close circuitbreaker 3WR.
 34. On the overhead panel 21VU:  On the overhead panel 21VU:
 - push and hold the MASK MAN ON  - the SYS ON indicator light comes on.
 pushbutton switch for more
 than 6 sec.

 

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ACTION RESULT -------------------------------------------------------------------------------
In the cabin:

 -release the MASK MAN ON pushbutton switch.
 35. On the maintenance panel 50VU:
-push the TMR RESET pushbutton switch.
36. On the FWD Attendant Panel (FAP) 120RH:
 -push the PRE REC ANN. STOP membrane switch.
 37. on circuit breaker panel 49VU:
 -close circuit breaker 2WR, 5WR and 6WR.
 -the emergency announcements are heard.
 In the cabin at the first and second seatrow:
 -some of the doors of the emergency oxygen containers open immediately.
 -after approx. 6 sec. the doors of the remaining emergency oxygen containers open.
On the maintenance panel 50VU:
-
the On indicator light in the TMRRESET pushbutton switch comes on during the time the pushbutton is pushed.
　
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