W DOC AIRBUS | AMM A320F

Installation of the Engine Identification Module (APS 3200)

TASK 49-73-31-400-001-A
Installation of the Engine Identification Module (APS 3200)

WARNING: DO NOT TOUCH THE APU UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS WHEN YOU DO THE MAINTENANCE TASK(S).
WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
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
SAFETY CLIP - CIRCUIT BREAKER
No specific
1
VIBRATING PEEN EQUIPMENT
No specific
Torque wrench: range to between 45 and 35 lbf.in (0.51 and 0.40 m.daN ) T
No specific
Torque wrench: range to between 44 and 36 lbf.in (0.50 and 0.41 m.daN ) T
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.04TMC9)
Varnish-- Protective Component
(Material No.05BAA1)
Threadlocking Adhesive-- Low strength -
(Material No.05EML9)
Epoxy Adhesive-- - Legacy 1
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
315AL, 316AR
 D. 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 29-00-00-864-001-A
Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action
TASK 49-00-00-710-005-A
Self-Test of the ECB
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
F Identification Module - PWA Coding
F Identification Module
3. Job Set-up
Subtask 49-73-31-860-051-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
   (1) Make sure that the aircraft electrical circuits are energized (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) Make sure that there is 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).
   (5) Make sure that the access platform is in position below the APU compartment.
   (6) Make sure that the APU access doors are open (Ref. AMM TASK 52-41-00-010-001).
   (7) Make sure that the LIGHT control switch 11LJ is set to the ON position.
Subtask 49-73-31-865-051-A ** ON A/C NOT FOR ALL
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
121VUAPU/APU/CTL2KDL42
121VUAPU/ECB/SPLY1KDL41
4. Procedure
Subtask 49-73-31-820-050-A ** ON A/C NOT FOR ALL
A. Prepare the Identification Module
F Identification Module - PWA Coding ** ON A/C NOT FOR ALL
NOTE: Before the installation of the replacement identification module, input the APU serial number in the new identification module.
   (1) Find the APU serial number on the APU identification plate. This is the code number that must be input into the identification-module printed wiring-assembly (PWA).
   (2) Use the four digits of the APU serial number and subtract 1000 from it. The result is the APU serial number code for the identification module (1).
NOTE: A typical APU S/N has four digits (for example 1182).
   (3) Remove the protective cover.
NOTE: On the PWA each copper-clad circuit link is identified with a "W" number.
  • For APU S/N up to 3047:
    There are eleven links marked "W1" to "W11". Each of the eleven links has a numerical value.
  • For APU S/N > 3047:
    There are twelve links marked "W1" to "W12". Each of the twelve links has a numerical value.
   (4) The numerical values of the links are as follows:
  • For APU S/N up to 3047:
    W1 = 1, W2 = 2, W3 = 4, W4 = 8, W5 = 16, W6 = 32, W7 = 64, W8 = 128, W9 = 256, W10 = 512, W11 = 1024.
  • For APU S/N > 3047:
    W1 = 1, W2 = 2, W3 = 4, W4 = 8, W5 = 16, W6 = 32, W7 = 64, W8 = 128, W9 = 256, W10 = 512, W11 = 1024, W12 = 2048.
   (5) To input the code in the identification module (1), the "W" links must be cut.
   (6) Before you cut the links, calculate which of the links must be cut.
Calculation Example:
If the APU serial number is 1182, the links must be cut as follows:
W8 = 128
W6 = 32
W5 = 16
W3 = 4
W2 = 2
When the above values are added, the total is 182. The APU ECB software automatically adds one thousand (1000) to the calculation given by the links that are cut. The final serial number shown will be 1182.
NOTE: Carefully do a check of the calculation before you cut the links.
   (7) Cut the copper-clad links as given by the calculation.
Make sure that you remove the full copper-clad link between the connecting round-pads.
   (8) Remove any unwanted materials caused by the cutting procedure.
   (9) Apply Varnish-- Protective Component (Material No.04TMC9) to the areas of the PWA that have been cut.
   (10) Apply Threadlocking Adhesive-- Low strength - (Material No.05BAA1) to the mating threads at the interface of the protective cover and the identification module (1).
   (11) Install the protective cover.
   (12) TORQUE the protective cover coupling-nut to between 45 and 35 lbf.in (0.51 and 0.40 m.daN ) T.
   (13) Identify the assembly with its assembly P/N and identification number with the VIBRATING PEEN EQUIPMENT, laser or ink method.
   (14) Apply a layer of Epoxy Adhesive-- - Legacy 1 (Material No.05EML9) on the identifications.
Subtask 49-73-31-420-050-A ** ON A/C NOT FOR ALL
B. Install the Identification Module
F Identification Module ** ON A/C NOT FOR ALL
   (1) Align the mount plate (3) with screw holes in the main mount bracket.
   (2) Install the identification module (1) with the screws (2) to the mount plate (3).
   (3) TORQUE the screws (2) to between 44 and 36 lbf.in (0.50 and 0.41 m.daN ) T.
   (4) Remove the blanking cap from the electrical connector (4).
   (5) Make sure that all the electrical connections are clean and in the correct condition.
   (6) Install the electrical connector (4) to the identification module (1).
Subtask 49-73-31-865-052-A ** ON A/C NOT FOR ALL
C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
121VUAPU/APU/CTL2KDL42
121VUAPU/ECB/SPLY1KDL41
Subtask 49-73-31-710-050-A ** ON A/C NOT FOR ALL
D. Do the the self-test of the ECB (Ref. AMM TASK 49-00-00-710-005).
5. Close-up
Subtask 49-73-31-865-053-A ** ON A/C NOT FOR ALL
A. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
121VUAPU/APU/CTL2KDL42
121VUAPU/ECB/SPLY1KDL41
Subtask 49-73-31-410-050-A ** ON A/C NOT FOR ALL
B. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Set the LIGHT control switch 11LJ to the off position.
   (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 49-73-31-865-054-A ** ON A/C NOT FOR ALL
C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
121VUAPU/APU/CTL2KDL42
121VUAPU/ECB/SPLY1KDL41
Subtask 49-73-31-860-052-A ** ON A/C NOT FOR ALL
D. Aircraft Maintenance Configuration
   (1) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
[Rev.10 from 2021] 2026.04.01 01:32:16 UTC
"Aviabrain" 2025