W DOC AIRBUS | AMM A320F

Operational Check of LP Shut Off Valves including Operation by Individual Motors

TASK 28-24-00-710-803-A
Operational Check of LP Shut Off Valves including Operation by Individual Motors

WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:
  • THE FLIGHT CONTROLS
  • THE FLIGHT CONTROL SURFACES
  • THE LANDING GEAR AND THE RELATED DOORS
  • COMPONENTS THAT MOVE.
MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.
ZONE: 210
ZONE: 522
ZONE: 622
FIN: 12QM
FIN: 13QM
1. Reason for the Job
Refer to the MPD TASK: 282400-02
OPERATIONAL CHECK OF LP SHUT OFF VALVES INCLUDING OPERATION BY INDIVIDUAL MOTORS
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
AR
ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE
No specific
AR
SAFETY BARRIER(S)
No specific
AR
SAFETY CLIP - CIRCUIT BREAKER
No specific
AR
WARNING NOTICE(S)
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
210
CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
522
OUTBOARD FIXED L.E STRUCTURE
622
OUTBOARD FIXED L.E STRUCTURE
FOR [10QG] (ACTUATOR-LP FUEL VALVE, ENG 2)
622AT, 622XB
FOR [9QG] (ACTUATOR-LP FUEL VALVE, ENG 1)
522AT, 522XB
 C. Referenced Information
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 27-80-00-866-004-A
Extending the Slats on the Ground
TASK 27-80-00-866-005-A
Retracting the Slats on the Ground
TASK 28-00-00-910-001-A
Fuel Safety Procedures
TASK 31-60-00-860-001-A
EIS Start Procedure
TASK 31-60-00-860-002-A
EIS Stop Procedure
F Component Location - Cockpit ** ON A/C NOT FOR ALL
F Component Location - Cockpit ** ON A/C NOT FOR ALL
F Component Location - Cockpit ** ON A/C NOT FOR ALL
F Component Location - Cockpit ** ON A/C NOT FOR ALL
F Component Location - Cockpit ** ON A/C NOT FOR ALL
F Component Location - Cockpit ** ON A/C NOT FOR ALL
FOR [10QG] (ACTUATOR-LP FUEL VALVE, ENG 2)
TASK 57-41-37-000-003-A
Removal of the Access Panel
TASK 57-41-37-000-004-A
Removal of the Pressure Relief Panels
TASK 57-41-37-400-002-A
Installation of the Pressure Relief Panels
TASK 57-41-37-400-003-A
Installation of the Access Panel
FOR [9QG] (ACTUATOR-LP FUEL VALVE, ENG 1)
TASK 57-41-37-000-003-A
Removal of the Access Panel
TASK 57-41-37-000-004-A
Removal of the Pressure Relief Panels
TASK 57-41-37-400-002-A
Installation of the Pressure Relief Panels
TASK 57-41-37-400-003-A
Installation of the Access Panel
3. Job Set-up
Subtask 28-24-00-941-066-A
A. Safety Precautions
WARNING: OBEY THE FUEL SAFETY PROCEDURES.
   (1) You must obey the fuel safety procedures when you do work on the fuel system (Ref. AMM TASK 28-00-00-910-001).
   (2) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
Subtask 28-24-00-860-080-A
B. Aircraft Maintenance Configuration
   (1) On panel 20VU, make sure that ENG 1 and ENG 2 FIRE P/BSWs are in the closed and guarded position.
   (2) On panel 115VU, make sure that ENG/MASTER 1 and ENG/MASTER 2 switches are in the OFF position.
   (3) Put a WARNING NOTICE(S) in position on panel 20VU, to tell persons not to operate ENG 1 and ENG 2 FIRE P/BSWs.
   (4) Put a WARNING NOTICE(S) in position on panel 115VU, to tell persons not to operate ENG/MASTER 1 and ENG/MASTER 2 switches.
   (5) Fully extend the slats (Ref. AMM TASK 27-80-00-866-004).
   (6) Make sure that the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION is installed on the slat/flap control lever.
   (7) Put a WARNING NOTICE(S) in position to tell persons not to operate the slats.
   (8) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
   (9) Do the EIS start procedure (ECAM only) (Ref. AMM TASK 31-60-00-860-001).
   (10) On ECAM Control Panel (CP) 11VU, push (in) the FUEL P/BSW to get the FUEL page on the ECAM lower DU.
   (11) On the FUEL page, make sure that the crossfeed valve indication shows green cross-line (valve closed).
Subtask 28-24-00-865-085-A
C. Make sure that this(these) circuit breaker(s) is(are) closed:
PANELDESIGNATIONFINLOCATION
** ON A/C ALL
49VUFUEL/LP VALVE/MOT1/ENG22QGA09
49VUFUEL/LP VALVE/MOT1/ENG11QGA08
121VUFUEL/LP VALVE/MOT2/ENG24QGM26
121VUFUEL/LP VALVE/MOT2/ENG13QGM25
Subtask 28-24-00-865-088-A
D. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/SLT/CTL AND MONG/SYS15CVB06
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/SLT/CTL AND MONG/SYS15CVB01
** ON A/C ALL
121VUFLIGHT CONTROLS/SLT/CTL/SYS27CVR21
Subtask 28-24-00-010-061-A
E. Get Access
   (1) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position below the applicable zone 522(622).
   (2) Remove the applicable access panel:
     (a) FOR [9QG] (ACTUATOR-LP FUEL VALVE, ENG 1)
Remove 522AT (Ref. AMM TASK 57-41-37-000-003) or 522XB (Ref. AMM TASK 57-41-37-000-004).
     (b) FOR [10QG] (ACTUATOR-LP FUEL VALVE, ENG 2)
Remove 622AT (Ref. AMM TASK 57-41-37-000-003) or 622XB (Ref. AMM TASK 57-41-37-000-004).
4. Procedure
Subtask 28-24-00-710-058-A
A. Operational Check of LP Shut Off Valves including Operation by Individual Motors
   (1) In the test that follows, on each operation of the LP valve:
  • Make sure that the see/feel indicator operates smoothly from the valve open (valve closed) position to the valve closed (valve open) position.
  • Make sure that the see/feel indicator marks are accurately aligned with the valve open position.
  • Make sure that the see/feel indicator marks are at 90 deg (90 deg) to each other with the valve closed position.
   (2) For valve 12QM, do this test:
ACTION
RESULT
1.On panel 121VU:

  • Open, safety and tag circuit breaker 3QG.

  • ENG 1 LP valve MOTOR 2 SUPPLY and CONTROL are isolated.

On the ECAM lower DU:
  • The LEFT LP valve indication shows that the valve is closed (amber cross-line).
2.On LP-valve actuator 9QG:

  • Examine the position of the mechanical see/feel indicator.

  • The indicator shows that the valve is closed.
3.On panel 115VU:

  • Set ENG/MASTER 1 switch to the ON position.
On the ECAM lower DU:

  • The LEFT LP valve indication shows that the valve is open (green in-line).
4.On LP-valve actuator 9QG:

  • Listen to the actuator motor and measure the time that it operates for as the LP valve opens.
  • Examine the position of the mechanical see/feel indicator.

  • The actuator motor must not operate for more than 5 seconds.
  • The indicator shows that the valve is open.
5.On panel 115VU:

  • Set ENG/MASTER 1 switch to the OFF position.
On the ECAM lower DU:

  • The LEFT LP valve indication shows that the valve is closed (amber cross-line).
6.On LP-valve actuator 9QG:

  • Listen to the actuator motor and measure the time that it operates for as the LP valve closes.
  • Examine the position of the mechanical see/feel indicator.

  • The actuator motor must not operate for more than 5 seconds.
  • The indicator shows that the valve is closed.
7.On panel 121VU:

  • Remove the safety clip and the tag and close circuit breaker 3QG.

  • ENG 1 LP valve MOTOR 2 SUPPLY and CONTROL are energized.
8.On panel 49VU:

  • Open, safety and tag circuit breaker 1QG.

  • ENG 1 LP valve MOTOR 1 SUPPLY and CONTROL are isolated.

On the ECAM lower DU:

  • The LEFT LP valve indication shows that the valve is closed (amber cross-line).
9.On LP-valve actuator 9QG:

  • Examine the position of the mechanical see/feel indicator.

  • The indicator shows that the valve is closed.
10.On panel 115VU:

  • Set ENG/MASTER 1 switch to the ON position.
On the ECAM lower DU:
  • The LEFT LP valve indication shows that the valve is open (green in-line).
11.On LP-valve actuator 9QG:

  • Listen to the actuator motor and measure the time that it operates for as the LP valve opens.
  • Examine the position of the mechanical see/feel indicator.

  • The actuator motor must not operate for more than 5 seconds.
  • The indicator shows that the valve is open.
12.On panel 115VU:

  • Set ENG/MASTER 1 switch to the OFF position.
On the ECAM lower DU:

  • The LEFT LP valve indication shows that the valve is closed (amber cross-line).
13.On LP-valve actuator 9QG:

  • Listen to the actuator motor and measure the time that it operates for as the LP valve closes.
  • Examine the position of the mechanical see/feel indicator.

  • The actuator motor must not operate for more than 5 seconds.
  • The indicator shows that the valve is closed.
14.On panel 49VU:

  • Remove the safety clip and the tag and close circuit breaker 1QG.

  • ENG 1 LP valve MOTOR 1 SUPPLY and CONTROL are energized.
   (3) For valve 13QM, do this test:
ACTION
RESULT
1.On panel 121VU:
  • Open, safety and tag circuit breaker 4QG.

  • ENG 2 LP valve MOTOR 2 SUPPLY and CONTROL are isolated.

On the ECAM lower DU:
  • The RIGHT LP valve indication shows that the valve is closed (amber cross-line).
2.On LP-valve actuator 10QG:
  • Examine the position of the mechanical see/feel indicator.

  • The indicator shows that the valve is closed.
3.On panel 115VU:
  • Set ENG/MASTER 2 switch to the ON position.
On the ECAM lower DU:
  • The RIGHT LP valve indication shows that the valve is open (green in-line).
4.On LP-valve actuator 10QG:
  • Listen to the actuator motor and measure the time that it operates for as the LP valve opens.
  • Examine the position of the mechanical see/feel indicator.

  • The actuator motor must not operate for more than 5 seconds.
  • The indicator shows that the valve is open.
5.On panel 115VU:
  • Set ENG/MASTER 2 switch to the OFF position.
On the ECAM lower DU:

  • The RIGHT LP valve indication shows that the valve is closed (amber cross-line).
6.On LP-valve actuator 10QG:
  • Listen to the actuator motor and measure the time that it operates for as the LP valve closes.
  • Examine the position of the mechanical see/feel indicator.

  • The actuator motor must not operate for more than 5 seconds.
  • The indicator shows that the valve is closed.
7.On panel 121VU:
  • Remove the safety clip and the tag and close circuit breaker 4QG.

  • ENG 2 LP valve MOTOR 2 SUPPLY and CONTROL are energized.
8.On panel 49VU:
  • Open, safety and tag circuit breaker 2QG.

  • ENG 2 LP valve MOTOR 1 SUPPLY and CONTROL are isolated.

On the ECAM lower DU:

  • The RIGHT LP valve indication shows that the valve is closed (amber cross-line).
9.On LP-valve actuator 10QG:
  • Examine the position of the mechanical see/feel indicator.

  • The indicator shows that the valve is closed.
10.On panel 115VU:
  • Set ENG/MASTER 2 switch to the ON position.
On the ECAM lower DU:
  • The RIGHT LP valve indication shows that the valve is open (green in-line).
11.On LP-valve actuator 10QG:
  • Listen to the actuator motor and measure the time that it operates for as the LP valve opens.
  • Examine the position of the mechanical see/feel indicator.

  • The actuator motor must not operate for more than 5 seconds.
  • The indicator shows that the valve is open.
12.On panel 115VU:

  • Set ENG/MASTER 2 switch to the OFF position.
On the ECAM lower DU:

  • The RIGHT LP valve indication shows that the valve is closed (amber cross-line).
13.On LP-valve actuator 10QG:

  • Listen to the actuator motor and measure the time that it operates for as the LP valve closes.
  • Examine the position of the mechanical see/feel indicator.

  • The actuator motor must not operate for more than 5 seconds.
  • The indicator shows that the valve is closed.
14.On panel 49VU:
  • Remove the safety clip and the tag and close circuit breaker 2QG.

  • ENG 2 LP valve MOTOR 1 SUPPLY and CONTROL are energized.
5. Close-up
Subtask 28-24-00-410-063-A
A. Close Access
   (1) Install the applicable access panel:
     (a) FOR [9QG] (ACTUATOR-LP FUEL VALVE, ENG 1)
Install 522AT (Ref. AMM TASK 57-41-37-400-003) or 522XB (Ref. AMM TASK 57-41-37-400-002).
     (b) FOR [10QG] (ACTUATOR-LP FUEL VALVE, ENG 2)
Install 622AT (Ref. AMM TASK 57-41-37-400-003) or 622XB (Ref. AMM TASK 57-41-37-400-002).
Subtask 28-24-00-865-089-A
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/SLT/CTL AND MONG/SYS15CVB06
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/SLT/CTL AND MONG/SYS15CVB01
** ON A/C ALL
121VUFLIGHT CONTROLS/SLT/CTL/SYS27CVR21
Subtask 28-24-00-860-081-A
C. Aircraft Maintenance Configuration
   (1) Fully retract the slats (Ref. AMM TASK 27-80-00-866-005).
   (2) On the ECAM lower DU, make sure that the LP valves are closed.
   (3) Do the EIS stop procedure (Ref. AMM TASK 31-60-00-860-002).
   (4) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
Subtask 28-24-00-942-064-A
D. Removal of Equipment
   (1) Remove the SAFETY BARRIERS.
   (2) Remove the access platform(s).
   (3) Remove the WARNING NOTICE(S).
   (4) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
[Rev.10 from 2021] 2026.04.02 06:17:34 UTC
"WTRUIB" 2025