W DOC AIRBUS | AMM A320F

Installation of the Compressor Tubes and Duct

TASK 21-52-21-400-802-A
Installation of the Compressor Tubes and Duct

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.
WARNING: DO NOT TOUCH HOT PARTS WITHOUT APPLICABLE GLOVES. HOT PARTS CAN CAUSE AN INJURY.
WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
WARNING: BE CAREFUL WHEN YOU REMOVE OR INSTALL THIS EQUIPMENT. THIS EQUIPMENT IS HEAVY (MORE THAN 12 KG (26.5 lb)) AND CAN CAUSE INJURY AND/OR DAMAGE.
NOTE: This procedure is applicable for the air-cycle machine with part numbers 1263A0000-02/-03 and 1814A0000-02.
ZONE: 191
ZONE: 192
FIN: 10HM1
FIN: 11HM1
1. Reason for the Job
Self explanatory
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
AR
WARNING NOTICE(S)
No specific
1
WATER - SOAPY SOLUTION
M65725349
1
SPECIAL TOOL
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.14CCB6)
Testing Medium-Leak Detection - Oxygen System
(Material No.14QEB1)
Wire-Locking Dia: 0.6 mm CRES Nickel Alloy -
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
191
AIR CONDITIONING COMPT AND FAIRINGS
192
AIR CONDITIONING COMPT AND FAIRINGS
FOR [10HM1] (MACHINE-AIR CYCLE)
191KB
FOR [11HM1] (MACHINE-AIR CYCLE)
192KB
 D. Referenced Information
REFERENCE
DESIGNATION
TASK 12-33-21-618-001-A-01
Pre-conditioning through the HP Ground Connection
TASK 12-33-21-618-001-A-02
Pre-conditioning with the APU
TASK 21-63-00-710-004-A
Operational Test of the Cockpit and Cabin Temperature Control with CFDS/MCDU
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 53-35-13-000-002-A
Removal of the Quick-Release Access Panels from the Belly Fairing Structure
TASK 53-35-13-400-002-A
Installation of the Quick-Release Access Panels on the Belly Fairing Structure
F Compressor Tubes and Duct Installation
F Preforming Clamps
F Installation of the Lockwires
3. Job Set-up
Subtask 21-52-21-860-054-A
A. Aircraft Maintenance Configuration
   (1) Make sure that the aircraft electrical circuits are energized
(Ref. AMM TASK 24-41-00-861-002).
   (2) Make sure that these access panels are removed from the belly fairing structure (Ref. AMM TASK 53-35-13-000-002):
     (a) FOR [10HM1] (MACHINE-AIR CYCLE)
     (b) FOR [11HM1] (MACHINE-AIR CYCLE)
   (3) On AIR COND panel 30VU, make sure that:
     (a) The APU BLEED pushbutton switch is released (the ON legend is off).
     (b) The ENG 1 BLEED and ENG 2 BLEED pushbutton switches are released (the OFF legends are on).
     (c) The WARNING NOTICE(S) is in position to tell persons not to operate these pushbutton switches.
   (4) On the HP ground connector, make sure that the WARNING NOTICE(S) is in position to tell persons not to supply the ground air.
Subtask 21-52-21-865-061-A
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
FOR FIN: 10HM1 (MACHINEAIR CYCLE)
49VUAIR COND/TEMP CTL/SYS 1 CHAN B/28VDC52HHD08
** ON A/C NOT FOR ALL
122VUAIR COND/PACK TEMP/CTL SYS1/1/115VAC1HHX22
122VUAIR COND/PACK TEMP/CTL SYS1/1/28VDC3HHX21
122VUAIR COND/PACK TEMP CTL SYS2/1/28VDC4HHY19
122VUAIR COND/PACK TEMP CTL SYS2/1/115VAC2HHY18
** ON A/C NOT FOR ALL
122VUAIR COND/TEMP CTL SYS 1/CHAN A/115VAC49HHX22
122VUAIR COND/TEMP CTL SYS 1/CHAN A/28VDC51HHX21
122VUAIR COND/TEMP CTL SYS 1/CHAN B/115VAC50HHY18
** ON A/C NOT FOR ALL
FOR FIN: 11HM1 (MACHINEAIR CYCLE)
122VUAIR COND/PACK TEMP/CTL SYS1/2/115VAC21HHW22
122VUAIR COND/PACK TEMP/CTL SYS1/2/28VDC23HHW21
122VUAIR COND/PACK TEMP CTL SYS2/2/28VDC24HHY21
122VUAIR COND/PACK TEMP CTL SYS2/2/115VAC22HHY20
** ON A/C NOT FOR ALL
122VUAIR COND/TEMP CTL SYS 2/CHAN A/115VAC53HHW22
122VUAIR COND/TEMP CTL SYS 2/CHAN A/28VDC55HHW21
122VUAIR COND/TEMP CTL SYS 2/CHAN B/28VDC56HHY21
122VUAIR COND/TEMP CTL SYS 2/CHAN B/115VAC54HHY20
4. Procedure
Subtask 21-52-21-560-050-A
A. Preforming the Clamps
F Compressor Tubes and Duct Installation
F Preforming Clamps
   (1) Preform the four clamps of the return air tube (1) and the anti-icing tube (2):
     (a) For one clamp (4):
       1 Remove the adhesive tape from the clamp (step 1 of the illustration).
       2 Move the head of the clamp to the other head at the other end (step 2 of the illustration).
       3 Remove the PLUG-BLANKING from each disconnected line end.
       4 Install the new tube, and measure the external diameter of the tube where the clamp must be installed.
       5 Fold the end of the clamp at the correct dimension (step 3 of the illustration).
NOTE: The table gives the length between the folds in relation to the external diameters of the tubes.
       6 Move the head of the clamp in position below the folded length (step 4 of the illustration).
       7 Preform the clamp with the M65725349 SPECIAL TOOL along a diameter of 24 mm (0.945 in.) (step 5 of the illustration).
NOTE: The special tool is an optional tool for the preforming of the clamp.
     (b) Do the same procedure for the other clamps.
   (2) Preform the clamp of the blanking duct (3):
     (a) For one clamp (4):
       1 Remove the adhesive tape from the clamp (step 1 of the illustration).
       2 Move the head of the clamp to the other head at the other end (step 2 of the illustration).
       3 Remove the PLUG-BLANKING from each disconnected line end.
       4 Install the new duct, and measure the external diameter of the duct where the clamp must be installed.
       5 Fold the end of the clamp at the correct dimension (step 3 of the illustration).
NOTE: The table gives the length between the folds in relation to the external diameters of the ducts.
       6 Move the head of the clamp in position below the folded length (step 4 of the illustration).
       7 Preform the clamp with the M65725349 SPECIAL TOOL along a diameter of 20 mm (0.787 in.) (step 5 of the illustration).
NOTE: The special tool is an optional tool for the preforming of the clamp.
Subtask 21-52-21-420-054-A
B. Installation of the Compressor Tubes and Duct
F Compressor Tubes and Duct Installation
   (1) Install the return air tube (1):
     (a) Install and tighten the clamps (4), and make sure that you get the "A" clearance.
   (2) Install the anti-icing tube (2):
     (a) Install and tighten the clamps (4), and make sure that you get the "A" clearance.
   (3) Install the blanking duct (3):
     (a) Install and tighten the clamp (4), and make sure that you get the "A" clearance.
Subtask 21-52-21-420-055-A
WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
C. Installation of the Lockwires
F Installation of the Lockwires
NOTE: This paragraph is not applicable for part number 1263A0000-03 AMDT B.
   (1) Safety the screws of the clamps (4) with 14QEB1Wire-Locking Dia: 0.6 mm CRES Nickel Alloy -.
   (2) Safety the clamp (4) of the return air tube (1), at the turbine scroll side, with the union (5).
5. Close-up
Subtask 21-52-21-865-062-A
A. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
FOR FIN: 10HM1 (MACHINEAIR CYCLE)
49VUAIR COND/TEMP CTL/SYS 1 CHAN B/28VDC52HHD08
** ON A/C NOT FOR ALL
122VUAIR COND/PACK TEMP/CTL SYS1/1/115VAC1HHX22
122VUAIR COND/PACK TEMP/CTL SYS1/1/28VDC3HHX21
122VUAIR COND/PACK TEMP CTL SYS2/1/28VDC4HHY19
122VUAIR COND/PACK TEMP CTL SYS2/1/115VAC2HHY18
** ON A/C NOT FOR ALL
122VUAIR COND/TEMP CTL SYS 1/CHAN A/115VAC49HHX22
122VUAIR COND/TEMP CTL SYS 1/CHAN A/28VDC51HHX21
122VUAIR COND/TEMP CTL SYS 1/CHAN B/115VAC50HHY18
** ON A/C NOT FOR ALL
FOR FIN: 11HM1 (MACHINEAIR CYCLE)
122VUAIR COND/PACK TEMP/CTL SYS1/2/115VAC21HHW22
122VUAIR COND/PACK TEMP/CTL SYS1/2/28VDC23HHW21
122VUAIR COND/PACK TEMP CTL SYS2/2/28VDC24HHY21
122VUAIR COND/PACK TEMP CTL SYS2/2/115VAC22HHY20
** ON A/C NOT FOR ALL
122VUAIR COND/TEMP CTL SYS 2/CHAN A/115VAC53HHW22
122VUAIR COND/TEMP CTL SYS 2/CHAN A/28VDC55HHW21
122VUAIR COND/TEMP CTL SYS 2/CHAN B/28VDC56HHY21
122VUAIR COND/TEMP CTL SYS 2/CHAN B/115VAC54HHY20
Subtask 21-52-21-710-053-A
B. Test(s)
   (1) Do the preconditioning through the HP ground connector (Ref. AMM TASK 12-33-21-618-001) or with the APU (Ref. AMM TASK 12-33-21-618-001).
   (2) Apply a solution of Testing Medium-Leak Detection - Oxygen System (Material No.14CCB6) or WATER - SOAPY SOLUTION on the connections of the compressor tubes and the duct of the ACM casing.
   (3) Do a leak check at the connections of the compressor tubes and the duct to the ACM casing:
     (a) Make sure that there are no leaks.
   (4) After approximately 15 minutes, stop the pre-conditioning (Ref. AMM TASK 12-33-21-618-001) (Ref. AMM TASK 12-33-21-618-001).
   (5) Do the operational test of the cockpit and the cabin temperature control system (Ref. AMM TASK 21-63-00-710-004).
Subtask 21-52-21-410-053-A
C. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Install the access panel on the belly fairing structure (Ref. AMM TASK 53-35-13-400-002):
     (a) FOR [10HM1] (MACHINE-AIR CYCLE)
     (b) FOR [11HM1] (MACHINE-AIR CYCLE)
   (3) Remove the WARNING NOTICE(S).
Subtask 21-52-21-862-052-A
D. De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
[Rev.10 from 2021] 2026.04.02 06:11:27 UTC
"WTRUIB" 2025