-
do a check and repair the wiring between: the CROSSBLEED-VALVE SELECTOR SWITCH (3HV) connector A/1 and ground (Ref. ASM 36-12/01).
1 -EFF : ALL
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--Aug 01/05 ---CES - B. If only one BMC gives the maintenance message X FEED VALVE 6HV OR CKT:
-replace the related BMC (Ref. AMM TASK 36-11-34-000-001) and (Ref. AMM TASK 36-11-34-400-001).
(1) If the fault continues:
-do a check and repair the wiring between: the related BMC connectors AB/1A,2A,3A,4A and the first terminal block (Ref. ASM 36-12/01).
C. Do the test as given in Para. 3. to make sure that the operation is correct (no maintenance message shown).
1 -EFF : ALL
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--May 01/05 ---CES - Low Air Pressure in the Right Crossbleed Duct
1. Possible Causes
_______________
-VALVE-X BLEED (6HV)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 12-33-21-618-001 Pre-conditioning through the HP Ground Connection
AMM 12-33-21-618-001 Pre-conditioning with the APU
AMM 36-12-52-000-001 Removal of the Crossbleed Valve (6HV)
AMM 36-12-52-400-001 Installation of the Crossbleed Valve (6HV)
3. Fault Confirmation
__________________
A. Do the pre-conditioning with the high-pressure ground connection (Ref. AMM TASK 12-33-21-618-001) or with the APU (Ref. AMM TASK 12-33-21-618-001).
NOTE : Make sure that there are no maintenance messages related to the
____ pack 2 and/or the crossbleed system available before you do this test.
4. Fault Isolation
_______________
A. If the right pack does not operate during the pre-conditioning because of low pressure:
-replace the VALVE-X BLEED (6HV) (Ref. AMM TASK 36-12-52-000-001) and (Ref. AMM TASK 36-12-52-400-001).
B. Do the test as given in Para. 3. to make sure that the operation is
correct (no maintenance message shown).
1 -EFF : ALL
-∞∞36-12-00∞∞∞∞∞∞∞∞∞∞Page 218
--May 01/05 ---CES - To Slow Operation of the Crossbleed Valve
1. Possible Causes
_______________
-
VALVE-X BLEED (6HV)
-
VALVE-X BLEED ACTUATOR
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 36-12-00-710-001 Operational Test of the APU Bleed Air Supply and
Crossbleed Systems AMM 36-12-52-000-001 Removal of the Crossbleed Valve (6HV) AMM 36-12-52-000-002 Removal of the Crossbleed Valve Actuator AMM 36-12-52-400-001 Installation of the Crossbleed Valve (6HV) AMM 36-12-52-400-002 Installation of the Crossbleed Valve Actuator
3. Fault Confirmation
__________________
A. Do the operational test of the APU bleed-air supply and the crossbleed systems (Ref. AMM TASK 36-12-00-710-001).
4. Fault Isolation
_______________
A. If after the test the message X-BLEED MAN CTL is shown on the status page of the lower ECAM display unit:
-look at the visual position indicator of the crossbleed valve to make sure that the indicator shows fully closed position,
-set the X-BLEED selector switch on AIR COND overhead panel 30VU to the OPEN position,
-do a check of the operation time of the crossbleed valve from fully closed to fully open position .
(1)
If the operation time of the crossbleed valve is more than 10 s:
-replace the VALVE-X BLEED ACTUATOR (Ref. AMM TASK 36-12-52-000-002) and (Ref. AMM TASK 36-12-52-400-002).
(2)
If the fault continues:
-replace the VALVE-X BLEED (6HV) (Ref. AMM TASK 36-12-52-000-001) and (Ref. AMM TASK 36-12-52-400-001).
B. Do the test given in Para. 3.
1 -EFF : ALL
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--May 01/05 ---CES -
1 -EFF : ALL
-∞∞36-12-00∞∞∞∞∞∞∞∞∞∞Page 301 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320 Trouble Shooting Manual 排故手册 PNEUMATIC(110)
