W DOC AIRBUS | TSM A320F

Loss of the Manual Electrical Closure of the Bleed Pressure-Regulator Valve of the Engine 1

TASK 36-11-00-810-831-A
Loss of the Manual Electrical Closure of the Bleed Pressure-Regulator Valve of the Engine 1

1. Possible Causes
  • VALVE-BLEED PRESS REG [4001HA]
  • wiring
  • BMC-1 [1HA1]
  • SOLENOID-BLEED PRESS REG V CTL, ENG 1 [10HA1]
  • P/BSW-ENG 1 BLEED [4HA1]
  • wiring from the connector of the bleed pressure-regulator valve control-solenoid to the ENG 1 BLEED pushbutton switch
  • wiring from the ENG 1 BLEED pushbutton switch to the circuit breaker (3HA1)
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
TSM TASK 36-11-00-810-829-A
Loss of the Non-Return Function and Temperature Limitation Function of the Bleed Pressure-Regulator Valve of the Engine 1
ASM 361101
AMM 36-11-34-000-001
Removal of the BMC
AMM 36-11-34-400-001
Installation of the BMC
AMM 36-11-52-000-040
Removal of the Bleed Pressure-Regulator Valve
AMM 36-11-52-000-042
Removal of the Bleed Pressure Regulator Valve
AMM 36-11-52-400-040
Installation of the Bleed Pressure-Regulator Valve
AMM 36-11-52-400-042
Installation of the Bleed Pressure Regulator Valve
AMM 36-11-52-720-001
Functional Test of the Opening of the Bleed-Pressure Regulator Valve (PRV) with the Bleed Test Set P/N 98D36003000000
AMM 36-11-55-000-001
Removal of the Bleed-Pressure-Regulator Valve Control-Solenoid
AMM 36-11-55-400-001
Installation of the Bleed-Pressure-Regulator Valve Control-Solenoid
3. Fault Confirmation
Subtask 36-11-00-710-110-B ** ON A/C NOT FOR ALL
A. Test
   (1) Do the test of the bleed pressure-regulator valve AMM 36-11-52-720-001.
4. Fault Isolation
Subtask 36-11-00-865-055-A ** ON A/C NOT FOR ALL
A. Table of the circuit breakers used in this procedure:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUAIR BLEED/ENG 1/CTL3HA1D12
49VUAIR BLEED/ENG 1/MONG2HA1D11
Subtask 36-11-00-810-081-C ** ON A/C NOT FOR ALL
B. If the fault symptom is identified by the maintenance message:
PRESS REG-V 4001HA1 OR SOL 10HA1
  • do a check of the visual position indicator of the bleed pressure-regulator valve.
   (1) If the bleed pressure-regulator valve is open:
   (2) If the bleed pressure-regulator valve is closed:
  • make sure that the indication of the valve position on the lower ECAM display unit is correct when you manually operate the valve shaft.
     (a) If the indication does not agree with the position of the valve butterfly:
  • do a check and repair the wiring between the bleed pressure regulator-valve (4001HA) to the BMC1 (1HA1), pin A/5 to pin AA/2B ASM 361101.
       1 If the fault continues:
     (b) If the fault continues:
  • release the ENG 1 BLEED pushbutton switch
  • make sure that the bleed pressure-regulator valve control-solenoid (10HA1) makes clicks.
       1 If the solenoid makes clicks:
  • do a check and clean the sense line between the bleed pressure-regulator valve control-solenoid (10HA1) and the bleed pressure-regulator valve (4001HA).
         a If the fault continues:
         b If the fault continues:
       2 If the solenoid does not make clicks:
  • do a check for 28VDC at pin A/1 of the connector of the bleed pressure-regulator valve control-solenoid (10HA1) with the ENG 1 BLEED pushbutton switch (4HA1) released (OFF legend on) and the circuit breaker (2HA1) open.
         a If there is 28VDC:
  • do a check for ground at pin A/3 of the connector of the bleed pressure-regulator valve control-solenoid (10HA1).

    * If there is no ground signal:
    * - replace the SOLENOID-BLEED PRESS REG V CTL, ENG 1 [10HA1] AMM 36-11-55-000-001 and AMM 36-11-55-400-001.
         b If there is no 28VDC:
  • do a check for 28VDC at pin A/D2 of the ENG 1 BLEED pushbutton switch (4HA1).

    * If there is 28VDC:
    * - do a check and repair the wiring from the connector of the bleed pressure-regulator valve control-solenoid to the control-solenoid to the ENG 1 BLEED pushbutton switch, pin A/1 to pin A/D3.

    * If the fault continues:
    * - replace the P/BSW-ENG 1 BLEED [4HA1] .

    * If there is no 28VDC:
    * - replace the circuit breaker (3HA1).

    ** If the fault continues:
    ** - do a check and repair the wiring between the ENG 1 BLEED pushbutton switch to the circuit breaker (3HA1), pin A/D2 to pin 2.
Subtask 36-11-00-810-081-F ** ON A/C NOT FOR ALL
B. If the fault symptom is identified by the maintenance message:
PRESS REG-V 4001HA1 OR SOL 10HA1
  • Do a check of the visual position indicator of the bleed pressure-regulator valve.
   (1) If the bleed pressure-regulator valve is open:
   (2) If the bleed pressure-regulator valve is closed:
  • Make sure that the valve position indication on the lower ECAM display unit is correct when you manually operate the valve shaft.
     (a) If the indication does not agree with the position of the valve butterfly:
  • Do a check and repair the wiring between the bleed pressure-regulator valve and the BMC1, pin A/5 to pin AA/2B ASM 361101.
       1 If the fault continues:
     (b) If the fault continues:
  • Release the ENG 1 BLEED pushbutton switch.
  • Make sure that the bleed pressure-regulator valve control-solenoid (10HA1) makes clicks.
       1 If the solenoid makes clicks:
  • Do a check and clean the sense line between the bleed pressure-regulator valve control-solenoid (10HA1) and the bleed pressure-regulator valve (4001HA).
         a If the fault continues:
         b If the fault continues:
       2 If the solenoid does not make clicks:
  • Do a check for 28 VDC at pin A/1 of the connector of the bleed pressure-regulator valve control-solenoid (10HA1) with the ENG 1 BLEED pushbutton switch (4HA1) released (OFF legend on) and the circuit breaker (2HA1) open.
         a If there is 28 VDC:
  • Do a check for ground at pin A/3 of the connector of the bleed pressure-regulator valve control-solenoid (10HA1).

    * If there is no ground signal:
    * - Replace the SOLENOID-BLEED PRESS REG V CTL, ENG 1 [10HA1] AMM 36-11-55-000-001 and AMM 36-11-55-400-001.
         b If there is no 28 VDC:
  • Do a check for 28 VDC at pin A/D2 of the ENG 1 BLEED pushbutton switch (4HA1) ASM 361101.

    * If there is 28 VDC:
    * - Do a check and repair the wiring from the connector of the bleed pressure-regulator valve control-solenoid to the ENG 1 BLEED pushbutton switch , pin A/1 to pin A/D3.

    ** If the fault continues:
    ** - Replace the P/BSW-ENG 1 BLEED [4HA1] .

    * If there is no 28 VDC:
    * - Replace the circuit breaker (3HA1).

    ** If the fault continues:
    ** - Do a check and repair the wiring from the ENG 1 BLEED pushbutton switch to the circuit breaker (3HA1), pin A/D2 to pin 2 ASM 361101.
Subtask 36-11-00-810-166-B ** ON A/C NOT FOR ALL
C. If the test gives the maintenance message:
PRESS REG-V 4001HA1 OR SOL 10HA1 OR SENSE LINE
  • do the trouble shooting procedure for the Bleed Pressure Regulator Valve (4001HA) and the Bleed Pressure Regulator Solenoid (10HA1) (Ref. TSM TASK 36-11-00-810-829)
Subtask 36-11-00-710-111-A ** ON A/C NOT FOR ALL
D. Do the test given in Para. 3.
[Rev.8 from Aug 2018] 2026.04.04 04:33:43 UTC
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