W DOC AIRBUS | AMM A320F

Installation of the Environmental Control System (ECS) Harness Assembly [CFMB]

TASK 71-52-43-400-045-A
Installation of the Environmental Control System (ECS) Harness Assembly

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
ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific
AR
WARNING NOTICE(S)
No specific
Torque wrench: range to between 25 and 20 lbf.in (0.28 and 0.23 m.daN ) T
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.CP2208)
fiberglass adhesive tape
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR, 451AL, 452AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR, 461AL, 462AR
 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 31-60-00-860-001-A
EIS Start Procedure
TASK 31-60-00-860-002-A
EIS Stop Procedure
TASK 71-13-00-010-040-B
Opening of the Fan Cowl Doors
TASK 71-13-00-410-040-B
Closing of the Fan Cowl Doors
TASK 78-30-00-081-041-B
Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-481-041-B
Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-36-00-010-040-B
Opening of the Thrust Reverser Doors
TASK 78-36-00-410-040-B
Closing of the Thrust Reverser Doors
F Environmental Control System Harness Assembly
3. Job Set-up
Subtask 71-52-43-860-062-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
   (1) On the center pedestal, on the ENG panel 115VU:
     (a) Make sure that a WARNING NOTICE(S) is in position to tell persons not to start the engine.
     (b) Make sure that a WARNING NOTICE(S) is in position to tell persons that both thrust reverser control lever are not operational.
   (2) On the overhead maintenance panel 50VU, make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off. Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize the FADEC 1(2).
   (3) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position.
Subtask 71-52-43-010-069-A ** ON A/C NOT FOR ALL
B. Get Access
   (1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-040):
   (2) FOR [1000EM1] (ENGINE-1)
437AL 438AR
   (3) FOR [1000EM2] (ENGINE-2)
447AL 448AR
   (4) Make sure that the thrust reverser doors are open (Ref. AMM TASK 78-36-00-010-040):
   (5) FOR [1000EM1] (ENGINE-1)
451AL 452AR
   (6) FOR [1000EM2] (ENGINE-2)
461AL 462AR
Subtask 71-52-43-040-062-A ** ON A/C NOT FOR ALL
C. Make sure that the thrust reverser is unserviceable (Ref. AMM TASK 78-30-00-481-041).
Subtask 71-52-43-865-067-A ** ON A/C NOT FOR ALL
WARNING: OPEN THE PROBE HEATER CIRCUIT-BREAKERS 1DA1(2), 3DA1(2,3), 4DA1(2,3) AND 5DA1(2,3) BEFORE ENG1(2)FADEC A and EIU 1(2) C/B'S 2KS1 AND 2KS2. IF YOU DO NOT OBEY THIS SEQUENCE:
  • THE PROBES WILL BECOME TOO HOT.
  • THIS CAN CAUSE DAMAGE TO EQUIPMENT AND INJURY TO MAINTENANCE PERSONNEL.
D. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUCOM/CVR/SPLY2RKE14
49VUCOM/CVR/CTL4RKE13
** ON A/C NOT FOR ALL
49VUENGINE/2/FIRE DET/LOOP B8WD2A07
49VUENGINE/1/FIRE DET/LOOP A7WD1A06
49VUENGINE/2/FADEC A/AND EIU 22KS2A05
49VUENGINE/1/FADEC A/AND EIU 12KS1A04
49VUENGINE/1 AND 2/IGN/SYS A1JHA03
49VUANTI ICE/PROBES/AOA/14DA1D04
49VUANTI ICE/PROBES/PITOT/13DA1D02
49VUNAV PROBES/ADIRU 1/AND AOA 1/26VAC5FP1F07
49VUNAV PROBES/ADIRU1/115VAC4FP1F06
** ON A/C NOT FOR ALL
49VUANTI ICE/RAIN/RPLNT/CAPT1DB1D01
** ON A/C NOT FOR ALL
49VUCOM/CVR/SPLY23RKE14
49VUCOM/CVR/CTL26RKE13
** ON A/C NOT FOR ALL
105VUADIRS/ADIRU1/28VDC6FP1C02
121VURCDR/DFDR7TUK16
121VUENGINE/ENG2/OIL/PRESS2EN2N42
121VUENGINE/ENG2/OIL/QTY1EN2N41
121VUENGINE/ENG1/OIL/PRESS2EN1N40
121VUENGINE/ENG1/OIL/QTY1EN1N39
121VUADIRS/ADIRU/2/26VAC AND AOA5FP2N08
121VUADIRS/ADIRU/3/26VAC AND AOA5FP3N07
121VUADIRS/ADIRU/2/115VAC4FP2N06
121VUADIRS/ADIRU/3/115VAC4FP3N05
121VUADIRS/ADIRU/2/28VDC6FP2N04
121VUADIRS/ADIRU/3/28VDC6FP3N03
121VUENGINE/IGN/ENG2/SYS B3JH2P42
121VUENGINE/IGN/ENG1/SYS B3JH1P41
121VUENGINE/IGN/ENG2/SYS A BAT2JH2P40
121VUENGINE/IGN/ENG1/SYS A BAT2JH1P39
121VUENGINE/ENG1 AND 2 FIRE EXTIG/BTL1/SQUIB/B2WE1Q44
121VUENGINE/ENG1 AND 2 FIRE EXTIG/BTL1/SQUIB/A1WE1Q43
121VUENGINE/ENG1 AND 2 FIRE EXTIG/BTL2/SQUIB/B2WE2Q42
121VUENGINE/ENG1 AND 2 FIRE EXTIG/BTL2/SQUIB/A1WE2Q41
121VUENGINE/ENG2/FADEC B4KS2Q40
121VUENGINE/ENG2/FIRE DET/LOOP A7WD2Q39
121VUENGINE/ENG1/FIRE DET/LOOP B8WD1Q38
121VUENGINE/ENG1/FADEC B/AND EIU 14KS1R41
122VUELEC/GCU/22XU2T27
122VUELEC/GCU/12XU1T26
122VUANTI ICE/PROBES/2/TAT1DA2Y15
122VUANTI ICE/PROBES/2/PITOT3DA2Y14
122VUANTI ICE/PROBES/2/AOA4DA2Y13
122VUANTI ICE/PROBES/2/STATIC5DA2Y11
122VUANTI ICE/PROBES/3/PITOT3DA3Z16
122VUANTI ICE/PROBES/3/AOA4DA3Z15
122VUANTI ICE/PROBES/3/STATIC5DA3Z14
122VUANTI ICE/PROBES/1/STATIC5DA1Z13
122VUANTI ICE/PROBES/1/TAT1DA1Z12
** ON A/C NOT FOR ALL
122VUANTI ICE/RAIN/RPLNT/F/O1DB2W11
Subtask 71-52-43-865-093-A ** ON A/C NOT FOR ALL
WARNING: OPEN THE PROBE HEATER AND WINDOW HEATER CIRCUIT-BREAKERS BEFORE YOU OPEN THE PHC AND WHC CIRCUIT BREAKERS. IF YOU DO NOT OBEY THIS SEQUENCE:
  • THE PROBES WILL BECOME TOO HOT.
  • THIS CAN CAUSE DAMAGE TO EQUIPMENT AND INJURY TO MAINTENANCE PERSONNEL.
E. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUANTI ICE/PROBES/PHC/12DA1D03
122VUANTI ICE/WHC/25DG2W13
122VUANTI ICE/WHC/15DG1X13
122VUANTI ICE/PROBES/PHC/32DA3Y16
122VUANTI ICE/PROBES/PHC/22DA2Y12
4. Procedure
Subtask 71-52-43-420-058-B ** ON A/C NOT FOR ALL
A. Installation of the Environmental Control System (ECS) Harness Assembly (4207KS)
F Environmental Control System Harness Assembly ** ON A/C NOT FOR ALL
NOTE: When using fiberglass clamps on the engine core harnesses, do as follows: Wrap fiberglass adhesive tape (Material No.CP2208) around the harness(es) to make sure that the clamps do not move when they are installed. Wrap only the locations where the clamps are being installed.
NOTE: Before you tighten the clamps, adjust the wire harness to get the maximum clearance between the harness and the other structures on the engine. Make sure that the harness will not touch other structures.
   (1) Remove the blanking caps from the electrical connectors.
   (2) Put the harness 4207KS in position on the engine.
   (3) Connect the electrical connector 450VC-A to the core junction box.
   (4) Put the two clamps (10) on the harness 4207KS. Attach the clamps to the pylon with the bolts (5).
   (5) Put the harness into the clamp (20) attached to the bracket at station 233. Make sure the reference marker is correctly aligned. Install the bolt (15).
NOTE: The Installation Reference Markers are fiberglass tape on the harnesses.
   (6) On the left side of the engine, put the harness into the clamp (40) and install the bolt (15).
   (7) On the left side of the engine, put the clamps (40) on the harness. Attach the clamps (40) to the brackets near station 221 with the bolt (15).
   (8) On the left side of the engine, put the clamp (35) on the harness. Attach the clamp (35) to the bracket at station 221 with the bolt (15).
   (9) On the left side of the engine, put the clamp (70) on the harness. Attach the clamp (70) to the brackets at station 215 with the bolt (15). Make sure the reference marker is correctly aligned.
   (10) Connect the electrical connector 4000HA-A to the High-Pressure Regulator Valve (4000HA).
   (11) On the right side of the engine, put the clamp (45) on the harness. Attach the clamp (45) to the bracket at station 221 with the bolt (15).
   (12) On the right side of the engine, put the clamp (40) on the harness. Attach the clamp (40) to the bracket at station 221 with the bolt (15). Make sure the reference marker is correctly aligned.
   (13) On the right side of the engine, put the clamp (50) on the harness. Attach the clamp (50) to the bracket at station 221 with the bolt (15).
   (14) Connect the electrical connector 4001HA-A to the Bleed-Pressure Regulator Valve (4001HA).
   (15) Put the three GD9972 ground wires on the ground stud GD9972. Attach the wires with the washers (60) and (65) and the nut (55).
   (16) Put the two GD9973 ground wires on the ground stud GD9973. Attach the wires with the washers (60) and (65) and the nut (55).
   (17) Make sure that the harness 4207KS is correctly installed on the engine.
   (18) TORQUE the bolts (15) to between 25 and 20 lbf.in (0.28 and 0.23 m.daN ) T.
Subtask 71-52-43-760-052-A ** ON A/C NOT FOR ALL
B. Do an electrical-bond resistance check
   (1) Put one lead of the ohmmeter on the ground wire near the ground stud.
   (2) Put the other lead of the ohmmeter on the top surface of the bracket.
   (3) The resistance measured between the ohmmeter leads must not be more than 0.0025 ohm.
   (4) If the resistance is more than 0.0025 ohm, remove the applicable hardware and clean the mating surfaces. Do this procedure again until the resistance is less than 0.0025 ohm.
Subtask 71-52-43-865-094-A ** ON A/C NOT FOR ALL
WARNING: CLOSE THE PHC AND WHC CIRCUIT BREAKERS BEFORE YOU CLOSE THE PROBE HEATER AND WINDOW HEATER CIRCUIT-BREAKERS. IF YOU DO NOT OBEY THIS SEQUENCE:
  • THE PROBES WILL BECOME TOO HOT.
  • THIS CAN CAUSE DAMAGE TO EQUIPMENT AND INJURY TO MAINTENANCE PERSONNEL.
C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUANTI ICE/PROBES/PHC/12DA1D03
122VUANTI ICE/WHC/25DG2W13
122VUANTI ICE/WHC/15DG1X13
122VUANTI ICE/PROBES/PHC/32DA3Y16
122VUANTI ICE/PROBES/PHC/22DA2Y12
Subtask 71-52-43-865-068-A ** ON A/C NOT FOR ALL
D. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUCOM/CVR/SPLY2RKE14
49VUCOM/CVR/CTL4RKE13
** ON A/C NOT FOR ALL
49VUENGINE/2/FIRE DET/LOOP B8WD2A07
49VUENGINE/1/FIRE DET/LOOP A7WD1A06
49VUENGINE/2/FADEC A/AND EIU 22KS2A05
49VUENGINE/1/FADEC A/AND EIU 12KS1A04
49VUENGINE/1 AND 2/IGN/SYS A1JHA03
49VUANTI ICE/PROBES/AOA/14DA1D04
49VUANTI ICE/PROBES/PITOT/13DA1D02
49VUNAV PROBES/ADIRU 1/AND AOA 1/26VAC5FP1F07
49VUNAV PROBES/ADIRU1/115VAC4FP1F06
** ON A/C NOT FOR ALL
49VUANTI ICE/RAIN/RPLNT/CAPT1DB1D01
** ON A/C NOT FOR ALL
49VUCOM/CVR/SPLY23RKE14
49VUCOM/CVR/CTL26RKE13
** ON A/C NOT FOR ALL
105VUADIRS/ADIRU1/28VDC6FP1C02
121VURCDR/DFDR7TUK16
121VUENGINE/ENG2/OIL/PRESS2EN2N42
121VUENGINE/ENG2/OIL/QTY1EN2N41
121VUENGINE/ENG1/OIL/PRESS2EN1N40
121VUENGINE/ENG1/OIL/QTY1EN1N39
121VUADIRS/ADIRU/2/26VAC AND AOA5FP2N08
121VUADIRS/ADIRU/3/26VAC AND AOA5FP3N07
121VUADIRS/ADIRU/2/115VAC4FP2N06
121VUADIRS/ADIRU/3/115VAC4FP3N05
121VUADIRS/ADIRU/2/28VDC6FP2N04
121VUADIRS/ADIRU/3/28VDC6FP3N03
121VUENGINE/IGN/ENG2/SYS B3JH2P42
121VUENGINE/IGN/ENG1/SYS B3JH1P41
121VUENGINE/IGN/ENG2/SYS A BAT2JH2P40
121VUENGINE/IGN/ENG1/SYS A BAT2JH1P39
121VUENGINE/ENG1 AND 2 FIRE EXTIG/BTL1/SQUIB/B2WE1Q44
121VUENGINE/ENG1 AND 2 FIRE EXTIG/BTL1/SQUIB/A1WE1Q43
121VUENGINE/ENG1 AND 2 FIRE EXTIG/BTL2/SQUIB/B2WE2Q42
121VUENGINE/ENG1 AND 2 FIRE EXTIG/BTL2/SQUIB/A1WE2Q41
121VUENGINE/ENG2/FADEC B4KS2Q40
121VUENGINE/ENG2/FIRE DET/LOOP A7WD2Q39
121VUENGINE/ENG1/FIRE DET/LOOP B8WD1Q38
121VUENGINE/ENG1/FADEC B/AND EIU 14KS1R41
122VUELEC/GCU/22XU2T27
122VUELEC/GCU/12XU1T26
122VUANTI ICE/PROBES/2/TAT1DA2Y15
122VUANTI ICE/PROBES/2/PITOT3DA2Y14
122VUANTI ICE/PROBES/2/AOA4DA2Y13
122VUANTI ICE/PROBES/2/STATIC5DA2Y11
122VUANTI ICE/PROBES/3/PITOT3DA3Z16
122VUANTI ICE/PROBES/3/AOA4DA3Z15
122VUANTI ICE/PROBES/3/STATIC5DA3Z14
122VUANTI ICE/PROBES/1/STATIC5DA1Z13
122VUANTI ICE/PROBES/1/TAT1DA1Z12
** ON A/C NOT FOR ALL
122VUANTI ICE/RAIN/RPLNT/F/O1DB2W11
Subtask 71-52-43-861-055-A ** ON A/C NOT FOR ALL
E. Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
Subtask 71-52-43-869-067-A ** ON A/C NOT FOR ALL
F. Do the EIS start procedure (for the upper and lower display units of the ECAM system) (Ref. AMM TASK 31-60-00-860-001).
Subtask 71-52-43-869-068-A ** ON A/C NOT FOR ALL
G. Aircraft Maintenance Configuration
   (1) On the BLEED page of the lower display unit of the ECAM system, make sure that:
  • the BLEED PRESSURE REGULATOR VALVE is closed
  • the HIGH PRESSURE REGULATOR VALVE is closed.
5. Close-up
Subtask 71-52-43-869-069-A ** ON A/C NOT FOR ALL
A. Do the EIS stop procedure (Ref. AMM TASK 31-60-00-860-002).
Subtask 71-52-43-862-054-A ** ON A/C NOT FOR ALL
B. De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
Subtask 71-52-43-410-058-A ** ON A/C NOT FOR ALL
C. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Close the thrust reverser doors (Ref. AMM TASK 78-36-00-410-040).
     (a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
     (b) FOR [1000EM2] (ENGINE-2)
461AL 462AR
   (3) Remove the access platform(s).
Subtask 71-52-43-440-054-A ** ON A/C NOT FOR ALL
D. Make the thrust reverser serviceable (Ref. AMM TASK 78-30-00-081-041).
Subtask 71-52-43-410-059-A ** ON A/C NOT FOR ALL
E. Close Access
   (1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-040):
     (a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
     (b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
   (2) Remove the WARNING NOTICE(S).
[Rev.10 from 2021] 2026.04.02 06:32:28 UTC
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