(b)
Do the EIS start procedure (Upper ECAM DU and lower ECAM DU only) (Ref. AMM TASK 31-60-00-860-001).
B. Test
(1) Do a check of the position of the ENG 1 BLEED pushbutton switch (4HA1).
(a) If the pushbutton switch is pushed:
- on the ECAM control panel 11VU, push the BLEED key (the BLEED page comes into view on the lower ECAM DU)
-approximately 30 minutes after engine 1 shutdown, do a check of the position of the bleed pressure regulator valve (4001HA) on the BLEED page.
NOTE : During the engine shutdown, the bleed pressure regulator
____
valve can close slowly, without closure command. The cause
of this slow closure can be a decreased segmentation play.
1_ If the position is fully closed:
- no more maintenance is necessary.
2_ If the position is not fully closed:
- do the trouble shooting given in Para. 4.A.
(b) If the pushbutton switch is released: 1 Connect the TEST SET - ENGINE BLEED SYSTEM (98D36003000000) or
_ TEST SET - ENGINE BLEED SYSTEM (98F36003002000) to the test port of the bleed pressure regulator valve, and slowly pressurize the system No. 2 to 30 psi (2.0684 bar).
2 On the ECAM control panel 11VU, push the BLEED key (the BLEED
_ page comes into view on the lower ECAM DU).
3 On the AIR COND panel 30VU, make sure that the ENG 1 BLEED
_ pushbutton switch (4HA1) is pushed.
4 On the BLEED page, make sure that the bleed pressure regulator
_ valve is shown open.
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5_ Start the APU:
- GTCP 36-300 (Ref. AMM TASK 49-00-00-860-003)
or
- APS 3200 (Ref. AMM TASK 49-00-00-860-005)
or
- 131-9(A) (Ref. AMM TASK 49-00-00-860-008).
6 On the AIR COND panel 30VU, push the APU BLEED pushbutton
_ switch (the OFF legend goes off).
7 On the BLEED page, make sure that the bleed pressure regulator
_ valve is shown closed.
8 Stop the APU:
_
-GTCP 36-300 (Ref. AMM TASK 49-00-00-860-004) or
-APS 3200 (Ref. AMM TASK 49-00-00-860-006) or
-131-9(A) (Ref. AMM TASK 49-00-00-860-009).
9 Depressurize the system on the test set.
_
10 Remove the TEST SET - ENGINE BLEED SYSTEM (98D36003000000) or
__ TEST SET - ENGINE BLEED SYSTEM (98F36003002000).
4. Fault Isolation
_______________
A. Do a check of the visual position indicator of the bleed pressure regulator valve.
(1) If the visual position indicator is in the closed position:
-disconnect the electrical connector 4001HA1-A and make sure that there is continuity between pin A/5 and A/3.
(a) If there is continuity:
- on the wiring side, do a check for ground at the connector 4001HA1-A pin 3.
1 If there is a ground signal:
_
-do a check and repair the wiring from the bleed pressure regulator valve 4001HA1-A pin A/5 and the BMC1 pin AA/2B (Ref. ASM 36-11/01).
2 If there is no ground signal:
_
-do a check and repair the wiring from the connector 4001HA1-A pin 3 to the ground point (Ref. ASM 36-11/01).
(b) If there is no continuity:
-replace the VALVE-BLEED PRESS REG (4001HA) (Ref. AMM TASK 36-11-52-000-040) and (Ref. AMM TASK 36-11-52-400-040).
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(2) If the visual position indicator is in the open position:
-disconnect the sense line between the bleed pressure regulator valve and the bleed-pressure-regulated valve-control solenoid.
(a)
If the bleed pressure regulator valve is closed:
-replace the SOLENOID-BLEED PRESS REG V CTL, ENG 1 (10HA1) (Ref. AMM TASK 36-11-55-000-001) and (Ref. AMM TASK 36-11-55-400-001).
(b)
If the bleed pressure regulator valve is not closed:
-replace the VALVE-BLEED PRESS REG (4001HA) (Ref. AMM TASK 36-11-52-000-040) and (Ref. AMM TASK 36-11-52-400-040).
-refer to Para. 4B.
(c)
If the fault continues:
-replace the P/BSW-ENG 1 BLEED (4HA1).
1 If the fault continues:
_
-do a check and repair the wiring (Ref. ASM 36-11/01) between: . pin 2 of the AIR BLEED/ENG 1/CTL circuit breaker (3HA1) and pin AA/8A of the BMC 1 (1HA1) . pin 2 of the AIR BLEED/ENG 1/CTL circuit breaker and pin A/D2 of the ENG 1 BLEED pushbutton switch (4HA1) . pin AA/7A of the BMC 1 and pin A/D1 of the ENG 1 BLEED pushbutton switch . pin A/D3 of the ENG 1 BLEED pushbutton switch and pin A/1 of the engine 1 bleed pressure regulator valve control solenoid (10HA1) . pin A/2 of the engine 1 bleed pressure regulator valve control solenoid and the ground.
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本文链接地址：A320 Trouble Shooting Manual 排故手册 PNEUMATIC(28)
