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R  emergency overpressure knob is pushed, the overpressure is 
R  momentarily selected. 
R  When the emergency overpressure knob is turned the overpressure 
R  is continnously selected. Overpressure is used in unusual flight 
R  conditions to make breathing easier and stop the inhalation of 
R  smoke or noxious gas. 
R  (Ref. Fig. 008) 
R  (5) The face-piece has a high-level dynamic microphone installed. 
R  The microphone has a built-in preamplifier, designed to JAR 25.1431 
R  (a), (b). 
R
 3. System Ground Test__________________
 (Ref. Fig. 009)
 A. By the Maintenance Personnel
 A leak test must be carried out when a component has been replaced in the
 crew oxygen system. The test point is used to carry out leak tests.

35-12-00Page 10
May 01/99

 Demand Regulator - 100 % Oxygen Supply
 Figure 007
 EFF :  ALL  35-12-00 Page 11 
Feb 01/98
 CES 

 

 Demand Regulator - Emergency Overpressure 100 % Oxygen Supply
 Figure 008

 EFF : ALL
35-12-00Page 12

Feb 01/98
 CES

 Full-Face Quick-Donning Mask in Storage Box
 Figure 009
 EFF :  ALL  35-12-00 Page 13 
Feb 01/98
 CES 

 

 OXYGEN DISTRIBUTION - ADJUSTMENT/TEST
_____________________________________
 TASK 35-12-00-710-001 Operational test of the Crew Oxygen Distribution
 1. Reason for the Job
__________________
 Refer to the MPD TASK: 351351-01 To do a check of the oxygen low-pressure supply solenoid-valve (in closing mode) and the low pressure indicator.
 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied
 from the External Power 31-60-00-860-001 EIS Start Procedure 31-60-00-860-002 EIS Stop Procedure TSM 35 PB 101 (for corrective action)
 3. Job Set-up
__________ Subtask 35-12-00-860-050
 A. Aircraft Maintenance Configuration
 (1)
 Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002).

 (2)
 Do the EIS start procedure (Upper ECAM DU and lower ECAM DU only) (Ref. TASK 31-60-00-860-001).

 EFF : ALL

35-12-00Page 501

 Subtask 35-12-00-865-050
 B. Make sure that this(these) circuit breaker(s) is(are) closed:
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU OXYGEN/CREW/OXY/SPLY 1HT HA01
 4. Procedure
_________
R **ON A/C 001-049, 051-099, 101-105, 151-199, 201-299, 301-302,
 Subtask 35-12-00-710-050
 A. Operational test
 (1)
 On the lower ECAM display unit, the DOOR/OXY page is shown automatically on the ground except if there is a failure in another aircraft system. If there is a failure: - on the ECAM control panel on the center pedestal, push the DOOR

 key, the DOOR/OXY page is shown with the oxygen indication.
 If the pressure is less than 1500 PSI a half box (advisory) is
 shown only for information.
 Do not do this test if the HP oxygen pressure is less than 400 PSI,
 or if the HP information is not available (XXXXPSI), in this case
 do a trouble shooting procedure (Ref. TSM 35 PB 101).

 (2)
 Do this test:

 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On the panel 21VU:  On the DOOR/OXY page:
 -push the OXYGEN/CREW SUPPLY  - OXY is shown green, pushbutton switch. - the oxygen HP indication stays green. The OFF legend goes off.
 2. On the panel 21VU:  On the DOOR/OXY page:
 -release the OXYGEN/CREW SUPPLY  - OXY changes from green to amber, pushbutton switch. - the oxygen HP indication stays green. The OFF legend comes on.
 3. In the cockpit, on one of the On the DOOR/OXY page:
 EFF : ALL

35-12-00Page 502

 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------oxygen mask stowage boxes : - the REGUL LO PR message is shown
　
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