(2) On the panel 21VU:
- release the OXYGEN/CREW SUPPLY pushbutton switch. The OFF legend comes on.
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞35-10-00∞∞∞∞∞∞∞∞∞∞Page 237
May 01/05R
CES
TASK 35-10-00-810-821
REGUL LO PR indication on the DOOR/OXY Page
1. Possible Causes
_______________
- PRESS SW-OXYGEN LO PR (4WV)
- XMTR/PRESS REG-OXY (4HT)
- SOL VALVE-LP OXY SPLY (3HT)
- wiring from the pressure switch (4WV) pin A/B to the first terminal block
- P/BSW-OXYGEN/CREW SUPPLY (2HT)
- wiring from the pushbutton switch (2HT) pin A/B3 to the first terminal block
- wiring from the pushbutton switch (2HT) to the solenoid valve (3HT)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power AMM 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied
from the External Power
AMM 31-60-00-860-001 EIS Start Procedure
AMM 31-60-00-860-002 EIS Stop Procedure
AMM 35-12-41-710-001 Operational Test of the Full Face/Quick Donning
Oxygen Masks (5757HM,5758HM,5759HM,5760HM) AMM 35-13-14-000-001 Removal of the Press Sw-Oxygen LO PR (4WV) AMM 35-13-14-400-001 Installation of the Press Sw-Oxygen LO PR (4WV) AMM 35-13-15-000-001 Removal of the Oxygen Pressure Regulator/Transmitter
(4HT)
AMM 35-13-15-400-001 Installation of the Oxygen Pressure
Regulator/Transmitter (4HT) AMM 35-13-51-000-001 Removal of the Sol Valve-LP Oxy Sply (3HT) AMM 35-13-51-400-001 Installation of the LP Oxygen-Supply Solenoid-Valve
(3HT)
ASM 35-13/01
3. Fault Confirmation
__________________
A. Job Set Up
(1) Aircraft Maintenance Configuration
(a) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞35-10-00∞∞∞∞∞∞∞∞∞∞Page 238
May 01/05R CES
(b) Do the EIS start procedure (Upper ECAM DU and lower ECAM DU only) (Ref. AMM TASK 31-60-00-860-001)
(c) On the panel 21VU push the OXYGEN/CREW SUPPLY pushbutton switch 2HT (the OFF legend goes off).
B. Make sure that this(these) circuit breaker(s) is(are) closed:
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU OXYGEN/CREW/OXY/SPLY 1HT HA01
C. Test
(1) On the ECAM control panel:
- push the DOOR key to get the DOOR/OXY page:
(2) Make sure that the REGUL LO PR indication comes into view on the DOOR/OXY page.
(3) Do the operational test of the full-face/quick-donning mask (Ref. AMM TASK 35-12-41-710-001).
4. Fault Isolation
_______________
A. If during the operational test the flow rate indicator comes into view for a short time and if you hear the oxygen flow rate:
- replace the PRESS SW-OXYGEN LO PR (4WV) (Ref. AMM TASK 35-13-14-000-001) and (Ref. AMM TASK 35-13-14-400-001).
(1) If the fault continues:
- replace the XMTR/PRESS REG-OXY (4HT) (Ref. AMM TASK 35-13-15-000-001) and (Ref. AMM TASK 35-13-15-400-001).
(a) If the fault continues:
- do a check and repair the wiring from the pressure switch (4WV) pin A/B to the first terminal block.
B. If during the operational test the flow rate indicator does not come into view and you do not hear the oxygen flow rate:
- disconnect the plug of the solenoid valve (3HT) and do a check for 28VDC at pin A/A (pushbutton switch 2HT on).
(1) If there is 28VDC:
- replace the SOL VALVE-LP OXY SPLY (3HT) (Ref. AMM TASK 35-13-51-000-001) and (Ref. AMM TASK 35-13-51-400-001).
中國航空網 www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：A320 Trouble Shooting Manual 排故手冊 氧氣 OXYGEN(21)
