DOC AIRBUS | AMM A320FDeactivation of the Bleed Control Valve (APS 3200)
TASK 49-51-00-040-002-A
Deactivation of the Bleed Control Valve (APS 3200)
MMEL 36-12-02A
APU BLEED VALVE
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 49-51-00-860-050-A ** ON A/C NOT FOR ALL
Subtask 49-51-00-020-050-A ** ON A/C NOT FOR ALL
Subtask 49-51-00-410-052-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 01:30:48 UTC
Deactivation of the Bleed Control Valve (APS 3200)
WARNING:
DO NOT TOUCH THE APU UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS WHEN YOU DO THE MAINTENANCE TASK(S).
Task Summary
1. Reason for the Job| Access | Test | Specific Tools | Mhr | E/T | Nb Men |
|---|---|---|---|---|---|
| YES | NO | NO | 0.3 | 0.3 | 1 |
MMEL 36-12-02A
APU BLEED VALVE
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE |
| No specific | AR | CAP - BLANKING |
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| No specific | 1 | TIE WRAP |
| No specific | AR | WARNING NOTICE(S) |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 315AL, 316AR |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 24-41-00-861-002-A | Energize the Aircraft Electrical Circuits from the External Power |
| TASK 24-41-00-861-002-A-01 | Energize the Aircraft Electrical Circuits from the APU |
| TASK 24-41-00-861-002-A-02 | Energize the Aircraft Electrical Circuits from Engine 1(2) |
| TASK 24-41-00-862-002-A | De-energize the Aircraft Electrical Circuits Supplied from the External Power |
| TASK 24-41-00-862-002-A-01 | De-energize the Aircraft Electrical Circuits Supplied from the APU |
| TASK 24-41-00-862-002-A-02 | De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2) |
| TASK 29-00-00-864-001-A | Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action |
| TASK 49-51-42-000-003-A | Air By-Pass Duct - Removal (APS 3200) |
| TASK 49-51-42-400-003-A | Air By-Pass Duct - Installation (APS 3200) |
| TASK 52-41-00-010-001-A | Open the APU Doors for Access |
| TASK 52-41-00-410-001-A | Close the APU Doors after Access |
Bleed Control Valve-Visual Position IndicatorSubtask 49-51-00-860-050-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) On the panel 25VU, make sure that the APU MASTER SW pushbutton switch is off.
(3) Put a warning notice in the cockpit to tell persons not to start the APU.
(4) Make sure that the hydraulic systems are depressurized
(Ref. AMM TASK 29-00-00-864-001).
Subtask 49-51-00-865-053-A ** ON A/C NOT FOR ALL (1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) On the panel 25VU, make sure that the APU MASTER SW pushbutton switch is off.
(3) Put a warning notice in the cockpit to tell persons not to start the APU.
(4) Make sure that the hydraulic systems are depressurized
(Ref. AMM TASK 29-00-00-864-001).
B. Open, safety and tag this(these) circuit breaker(s):
Subtask 49-51-00-010-051-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 121VU | APU/APU/CTL | 2KD | L42 |
| 121VU | APU/ECB/SPLY | 1KD | L41 |
| 122VU | AIR BLEED/X FEED VALVE/NORM | 1HV | Z20 |
C. Get Access
(1) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position below the APU access doors 315AL and 316AR.
(2) Open the APU access doors 315AL 316AR (Ref. AMM TASK 52-41-00-010-001).
(3) Set the LIGHT control switch 11LJ to the ON position.
4. Procedure(1) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position below the APU access doors 315AL and 316AR.
(2) Open the APU access doors 315AL 316AR (Ref. AMM TASK 52-41-00-010-001).
(3) Set the LIGHT control switch 11LJ to the ON position.
Subtask 49-51-00-020-050-A ** ON A/C NOT FOR ALL
A. Deactivation
(1) Make sure that the Bleed Control Valve position-indicator on the valve body shows the SURGE OPEN/LOAD CLOSED position.
(2) If the Bleed Control Valve position-indicator shows the SURGE OPEN/LOAD OPEN position:
(a) Remove the Air By-Pass Duct (Ref. AMM TASK 49-51-42-000-003) to get access to the butterfly valve of the Bleed Control Valve.
(b) Manually push the butterfly valve to the closed position.
(3) Disconnect the Bleed-Control Valve (BCV) electrical-connector (P33).
(4) Put a CAP - BLANKING on the electrical connector of the BCV.
(5) Put a CAP - BLANKING on the (P33) harness electrical connector.
(6) Secure the plug (P33) with TIE WRAP to aircraft structure.
(7) Make sure that you put a WARNING NOTICE(S) in the cockpit to tell persons that the Bleed Control Valve is deactivated and the APU cannot supply bleed air.
(8) Make an entry in the logbook.
5. Close-up(1) Make sure that the Bleed Control Valve position-indicator on the valve body shows the SURGE OPEN/LOAD CLOSED position.
(2) If the Bleed Control Valve position-indicator shows the SURGE OPEN/LOAD OPEN position:
(a) Remove the Air By-Pass Duct (Ref. AMM TASK 49-51-42-000-003) to get access to the butterfly valve of the Bleed Control Valve.
(b) Manually push the butterfly valve to the closed position.
NOTE: If the force to manually push the butterfly valve is too high, release the fuel pressure in the Bleed Control Valve servovalve.
(c) Install the Air By-Pass Duct (Ref. AMM TASK 49-51-42-400-003).(3) Disconnect the Bleed-Control Valve (BCV) electrical-connector (P33).
(4) Put a CAP - BLANKING on the electrical connector of the BCV.
(5) Put a CAP - BLANKING on the (P33) harness electrical connector.
(6) Secure the plug (P33) with TIE WRAP to aircraft structure.
(7) Make sure that you put a WARNING NOTICE(S) in the cockpit to tell persons that the Bleed Control Valve is deactivated and the APU cannot supply bleed air.
(8) Make an entry in the logbook.
NOTE: When the APU bleed control-valve is deactivated:
- The position indicator on the valve body is in the SURGE OPEN/LOAD CLOSED position. You can ignore the ECAM display which shows OPEN position.
- You can ignore the Class 1 Fault BCV LVDT during compensation (FC138). It will no longer be shown after you disconnect and connect again the ECB.
Subtask 49-51-00-410-052-A ** ON A/C NOT FOR ALL
A. Close Access
(1) Set the LIGHT control switch 11LJ to the OFF position.
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Close the APU access doors 315AL 316AR (Ref. AMM TASK 52-41-00-410-001).
(4) Remove the access platform(s).
(5) Remove the WARNING NOTICE(S).
Subtask 49-51-00-865-054-A ** ON A/C NOT FOR ALL (1) Set the LIGHT control switch 11LJ to the OFF position.
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Close the APU access doors 315AL 316AR (Ref. AMM TASK 52-41-00-410-001).
(4) Remove the access platform(s).
(5) Remove the WARNING NOTICE(S).
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 49-51-00-860-051-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 121VU | APU/APU/CTL | 2KD | L42 |
| 121VU | APU/ECB/SPLY | 1KD | L41 |
| 122VU | AIR BLEED/X FEED VALVE/NORM | 1HV | Z20 |
C. Aircraft Maintenance Configuration
(1) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(1) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).