DOC AIRBUS | AMM A320FInstallation of the Lavatory and Galley Extract Fan
TASK 21-23-51-400-001-A
Installation of the Lavatory and Galley Extract Fan
Self explanatory
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 21-23-51-860-050-A
Subtask 21-23-51-420-050-B
Subtask 21-23-51-410-050-A
[Rev.10 from 2021]
2026.04.02 06:10:56 UTC
Installation of the Lavatory and Galley Extract Fan
WARNING:
MAKE SURE THAT AIR IS NOT SUPPLIED TO THE AIR CONDITIONING SYSTEM FROM THE MAIN ENGINE, THE APU OR A GROUND SOURCE.
HOT COMPRESSED AIR CAN CAUSE INJURY TO PERSONNEL.
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 162DW, 826 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 20-28-00-912-802-A | Electrical Bonding - General Maintenance Procedure |
| TASK 21-61-00-710-001-A | Operational Test of the Pack Temperature-Control System |
| 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 25-55-12-000-001-A | Removal of the Aft Cargo-Compartment Partition at FR65 |
| TASK 25-55-12-400-001-A | Installation of the Aft Cargo-Compartment Partition at FR65 |
| TASK 52-30-00-860-001-A | Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump |
| TASK 52-30-00-860-002-A | Close the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump |
Lavatory and Galley Extract FanSubtask 21-23-51-860-050-A
A. Aircraft Maintenance Configuration
(1) Make sure that:
(a) The aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(b) The AFT cargo-compartment door 826 is open (Ref. AMM TASK 52-30-00-860-001).
(c) The ACCESS PLATFORM 2M (6 FT) is in position at the AFT cargo-compartment door 826.
(d) The access panel 162DW is removed (Ref. AMM TASK 25-55-12-000-001).
Subtask 21-23-51-865-051-A (1) Make sure that:
(a) The aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(b) The AFT cargo-compartment door 826 is open (Ref. AMM TASK 52-30-00-860-001).
(c) The ACCESS PLATFORM 2M (6 FT) is in position at the AFT cargo-compartment door 826.
(d) The access panel 162DW is removed (Ref. AMM TASK 25-55-12-000-001).
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
4. Procedure| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 122VU | AIR COND/LAV/GALLEY VENT CTL/EXTRACT FAN/CTL | 5HU | U21 |
| 122VU | AIR COND/LAV/GALLEY VENT CTL/EXTRACT FAN/SPLY | 6HU | U19 |
Subtask 21-23-51-420-050-B
A. Installation of the Lavatory and Galley Extract Fan
(1) Remove the blanking plugs from the lavatory and galley extract fan (3) and from the duct (11).
(2) Put the lavatory and galley extract fan (3) in position on the duct (11) and in the bracket (13).
(5) TORQUE the clamp (4) to between 0.30 and 0.25 m.daN (26.55 and 22.12 lbf.in )
.
(6) Make sure that the clamp (2) is in the correct position.
(7) TORQUE the clamp (2) to between 0.18 and 0.13 m.daN (15.93 and 11.50 lbf.in ).
(8) Put the outlet duct (12) in position on the lavatory and galley extract fan (3) and install the clamp (1).
(10) TORQUE the clamp (1) to between 0.25 and 0.2 m.daN (22.12 and 17.70 lbf.in ).
(11) Put the bonding strap (8) in position and install the washer (9), the screw (10), the washer (7) and the nut (6) (Ref. AMM TASK 20-28-00-912-802).
(12) Remove the blanking caps from the disconnected electrical connectors.
(13) Make sure that all the electrical connections are clean and in the correct condition.
(14) Connect the electrical connector (5).
(15) Make sure that the work area is clean and clear of tools and other items.
Subtask 21-23-51-865-052-A (1) Remove the blanking plugs from the lavatory and galley extract fan (3) and from the duct (11).
(2) Put the lavatory and galley extract fan (3) in position on the duct (11) and in the bracket (13).
NOTE: Make sure that the flow arrow on the body of the lavatory and galley extract fan (3) points in the direction of the air flow.
(3) Install the clamps (2) and (4). NOTE: Make sure that when you look in the direction of the air flow the electrical connector on the lavatory and galley extract fan is between the 4 o'clock and the 5 o'clock position.
(4) Make sure that the clamp (4) is in the correct position. (5) TORQUE the clamp (4) to between 0.30 and 0.25 m.daN (26.55 and 22.12 lbf.in )
. (6) Make sure that the clamp (2) is in the correct position.
(7) TORQUE the clamp (2) to between 0.18 and 0.13 m.daN (15.93 and 11.50 lbf.in )
. (8) Put the outlet duct (12) in position on the lavatory and galley extract fan (3) and install the clamp (1).
NOTE: Make sure that the location pin (14) is engaged in the hole in the lavatory and galley extract fan outlet-flange.
(9) Make sure that the clamp (1) is in the correct position. (10) TORQUE the clamp (1) to between 0.25 and 0.2 m.daN (22.12 and 17.70 lbf.in )
. (11) Put the bonding strap (8) in position and install the washer (9), the screw (10), the washer (7) and the nut (6) (Ref. AMM TASK 20-28-00-912-802).
(12) Remove the blanking caps from the disconnected electrical connectors.
(13) Make sure that all the electrical connections are clean and in the correct condition.
(14) Connect the electrical connector (5).
(15) Make sure that the work area is clean and clear of tools and other items.
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 21-23-51-710-050-A 5. Close-up| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 122VU | AIR COND/LAV/GALLEY VENT CTL/EXTRACT FAN/CTL | 5HU | U21 |
| 122VU | AIR COND/LAV/GALLEY VENT CTL/EXTRACT FAN/SPLY | 6HU | U19 |
Subtask 21-23-51-410-050-A
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the access panel 162DW (Ref. AMM TASK 25-55-12-400-001).
(3) Remove the access platform.
(4) Close the AFT cargo-compartment door 826 (Ref. AMM TASK 52-30-00-860-002).
Subtask 21-23-51-862-050-A (1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the access panel 162DW (Ref. AMM TASK 25-55-12-400-001).
(3) Remove the access platform.
(4) Close the AFT cargo-compartment door 826 (Ref. AMM TASK 52-30-00-860-002).