(1)
Do the engine start procedure.
(2)
Make sure that the ECAM warning AIR ENG 2 BLEED FAULT is not shown on the upper ECAM DU.
1
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Loss of or Accidental Automatic Closure of the Bleed Pressure-Regulator Valve of the Engine 1
1. Possible Causes
_______________
-SOLENOID-BLEED PRESS REG V CTL, ENG 1 (10HA1)
-P/BSW-ENG 1 BLEED (4HA1)
-AIR BLEED/ENG 1/CTL (3HA1)
-BMC-1 (1HA1)
-wiring
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
R 24-00-00-810-803 Circuit Breaker Tripped and/or C/B TRIPPED Warning AMM 36-11-00-740-001 BITE Test of the BMC 1(2) AMM 36-11-34-000-001 Removal of the BMC (1HA1, 1HA2) AMM 36-11-34-400-001 Installation of the BMC (1HA1, 1HA2) AMM 36-11-55-000-001 Removal of the Bleed-Pressure-Regulator Valve Control-Solenoid (10HA1,10HA2) AMM 36-11-55-400-001 Installation of the Bleed-Pressure-Regulator Valve Control-Solenoid (10HA1,10HA2) ASM 36-11/01
3. Fault Confirmation
__________________
A. Test
(1) Do the BITE test of the BMC1 (Ref. AMM TASK 36-11-00-740-001).
4. Fault Isolation
_______________
A. Table of the circuit breakers used in this procedure:
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU AIR BLEED/ENG 1/CTL 3HA1 D12 49VU AIR BLEED/ENG 1/MONG 2HA1 D11
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R B. If the test gives the maintenance message:
R BMC1 OR SOLENOID 10HA1 CKT
R NOTE : If the maintenance message BMC1 OR SOLENOID 10HA1 CKT comes into____
R view with no associated ECAM warning, no trouble shooting
R procedure is necessary.
R - Do a check of the status of the circuit breaker (3HA1).
R (1) If the circuit breaker (3HA1) is closed:
R - Do a check for 28 VDC at pin A/1 of the connector of the bleed
R pressure regulator valve control solenoid (10HA1) with the ENG 1
R BLEED pushbutton switch (4HA1) released (OFF legend on).
R (a) If there is 28 VDC:
R - Do a check for ground at pin A/2 of the connector of the bleed
R pressure regulator valve control solenoid (10HA1).
R 1_ If there is no ground signal:
R - Repair the wiring from the pin A/2 to the ground point.
R 2_ If there is a ground signal:
R - Replace the SOLENOID-BLEED PRESS REG V CTL, ENG 1 (10HA1)
R (Ref. AMM TASK 36-11-55-000-001) and (Ref. AMM TASK 36-11-
R 55-400-001).
R (b) If there is no 28 VDC:
R - Do a check for 28 VDC at pin A/D2 of the ENG 1 BLEED pushbutton
R switch (4HA1).
R 1_ If there is 28 VDC:
R - Replace the P/BSW-ENG 1 BLEED (4HA1).
R a_ If the fault continues:
R - Do a check and repair the wiring from the pin A/1 of the
R bleed pressure regulator valve control solenoid to the
R pin A/D3 of the ENG 1 BLEED pushbutton switch.
R 2_ If there is no 28 VDC:
R - Do a check and repair the wiring from the pin A/D2 of the
R ENG 1 BLEED pushbutton switch to the pin 2 of the circuit
R breaker 3HA1.
R a_ If the fault continues:
R - Replace the AIR BLEED/ENG 1/CTL (3HA1).
R (2) If the circuit breaker (3HA1) is tripped:
R - Do the procedure (Ref. TASK 24-00-00-810-803).
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--Feb 01/05 ---CES -
R (3) Check of the automatic closure of the bleed pressure regulator valve
R (4001HA).
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