W DOC AIRBUS | AMM A320F

Installation of the Contactors

TASK 24-22-55-400-002-A
Installation of the Contactors

WARNING: MAKE SURE THAT NO AC OR DC POWER IS CONNECTED TO THE AIRCRAFT ELECTRICAL CIRCUITS. THERE IS A RISK OF ELECTROCUTION IF THE AC OR DC POWER STAYS CONNECTED.
ZONE: 212
FIN: 11XU1
FIN: 11XU2
FIN: 9XU1
FIN: 9XU2
1. Reason for the Job
Self explanatory
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE
No specific
AR
WARNING NOTICE(S)
No specific
Torque wrench: range to between 0.122 and 0.098 m.daN (10.80 and 8.67 lbf.in ) T
No specific
Torque wrench: range to between 0.30 and 0.27 m.daN (26.55 and 23.89 lbf.in ) T
No specific
Torque wrench: range to between 0.60 and 0.50 m.daN (53.10 and 44.25 lbf.in ) T
No specific
Torque wrench: range to between 0.70 and 0.52 m.daN (61.95 and 46.02 lbf.in ) T
No specific
Torque wrench: range to between 1.1 and 0.90 m.daN (97.35 and 79.65 lbf.in ) T
FOR [11XU1] (BTC-1)
FOR [11XU2] (BTC-2)
No specific
Torque wrench: range to between 0.30 and 0.27 m.daN (26.55 and 23.89 lbf.in ) T
No specific
Torque wrench: range to between 0.70 and 0.52 m.daN (61.95 and 46.02 lbf.in ) T
FOR [9XU1] (GLC-1)
FOR [9XU2] (GLC-2)
No specific
Torque wrench: range to between 0.122 and 0.098 m.daN (10.80 and 8.67 lbf.in ) T
No specific
Torque wrench: range to between 0.30 and 0.27 m.daN (26.55 and 23.89 lbf.in ) T
No specific
Torque wrench: range to between 0.70 and 0.52 m.daN (61.95 and 46.02 lbf.in ) T
No specific
Torque wrench: range to between 1.1 and 0.90 m.daN (97.35 and 79.65 lbf.in ) T
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
212
COCKPIT
121AL
 C. Referenced Information
REFERENCE
DESIGNATION
TASK 24-22-51-400-001-A
Installation of the Lightning Protection Modules
TASK 25-11-41-000-001-A
Removal of the Third Occupant Seat
TASK 25-11-41-400-001-A
Installation of the Third Occupant Seat
F Contactor Base ** ON A/C NOT FOR ALL
F Generator 1(2) Contactor-Module ** ON A/C NOT FOR ALL
F Contactors ** ON A/C NOT FOR ALL
F Contactors ** ON A/C NOT FOR ALL
FOR [11XU1] (BTC-1)
FOR [11XU2] (BTC-2)
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
FOR [9XU1] (GLC-1)
FOR [9XU2] (GLC-2)
TASK 24-22-51-400-001-A
Installation of the Lightning Protection Modules
TASK 31-60-00-860-001-A
EIS Start Procedure
TASK 31-60-00-860-002-A
EIS Stop Procedure
TASK 71-00-00-710-003-A
Engine Automatic Start
TASK 71-00-00-710-003-B
Engine Automatic Start
TASK 71-00-00-710-018-A
Discontinued Start, Restart and Shutdown Procedures
TASK 71-00-00-710-028-A
Engine Shutdown
TASK 71-00-00-710-028-B
Engine Shutdown
TASK 71-00-00-710-043-A
Normal Engine Automatic-Start Procedure
TASK 71-00-00-860-814-A
Shutdown of the Engine
TASK 71-00-00-860-823-A
Start the Engine (Normal Automatic Start)
3. Job Set-up
Subtask 24-22-55-010-051-A
A. Get Access
   (1) Make sure that the Third Occupant seat is removed (Ref. AMM TASK 25-11-41-000-001).
   (2) On the left lower side of the panel 120VU, make sure that the access door (4) is removed.
   (3) Make sure that the ACCESS PLATFORM 1M (3 FT)-ADJUSTABLE is in position at the access door 121AL.
   (4) Make sure that the access door 121AL is open.
Subtask 24-22-55-860-050-A
B. Aircraft Maintenance Configuration
   (1) Make sure that the external power connector is not connected to the aircraft EXT PWR receptacle.
   (2) Make sure that the WARNING NOTICE(S) are in position on the access door 121AL to tell persons not to connect the external power connector to the aircraft EXT PWR receptacle.
   (3) In the cockpit, on the ELEC panel 35VU, make sure that these pushbutton switches are released:
  • BAT 1, BAT 2,
  • APU GEN
  • GEN 1, GEN 2,
  • EXT PWR.
   (4) In the cockpit, make sure that the WARNING NOTICE(S) are in position to tell persons not to operate the pushbutton switches on these overhead panels:
  • 21VU (EMERG ELEC PWR section),
  • 25VU (APU section),
  • 35VU (ELEC).
4. Procedure
Subtask 24-22-55-420-052-A ** ON A/C NOT FOR ALL
CAUTION: REFER TO THE MATCH MARKS MADE DURING THE REMOVAL WHEN YOU CONNECT THE ELECTRICAL WIRES. INCORRECT CONNECTION OF THE WIRES WILL CAUSE DAMAGE TO EQUIPMENT.
A. Installation of the Contactor Base
F Contactor Base ** ON A/C NOT FOR ALL
NOTE: Install the contactor base in correct position, if removed.
   (1) FOR [11XU1] (BTC-1), [11XU2] (BTC-2)
     (a) Install the four washers (5) and screws (6) and tighten them.
       1 TORQUE the four screws (6) to between 0.30 and 0.27 m.daN (26.55 and 23.89 lbf.in ) T.
     (b) Install the three jumpers (3) from the contactor base and the adjacent base.
       1 Install the six washers (1) and nuts (2) and tighten them.
       2 TORQUE the six nuts (2) to between 0.70 and 0.52 m.daN (61.95 and 46.02 lbf.in ) T.
     (c) Install the three jumpers (7) from the contactor base and the adjacent base.
       1 Install the six washers (9) and nuts (8) and tighten them.
       2 TORQUE the six nuts (8) to between 0.70 and 0.52 m.daN (61.95 and 46.02 lbf.in ) T.
   (2) FOR [9XU1] (GLC-1), [9XU2] (GLC-2)
     (a) Install the four washers (13) and screws (14) and tighten them.
       1 TORQUE the four screws (14) to between 0.30 and 0.27 m.daN (26.55 and 23.89 lbf.in ) T.
     (b) Install the three jumpers (12) from the contactor base and the adjacent base.
       1 Install the six washers (11) and nuts (10) and tighten them.
       2 TORQUE the six nuts (10) to between 0.70 and 0.52 m.daN (61.95 and 46.02 lbf.in ) T.
     (c) Make sure that the three electrical cables (23) and electrical wires (20) are clean and in the correct condition.
       1 Install the three electrical cables (23) from the contactor base.
       2 Install the three washers (22) and nuts (21) and tighten them.
       3 TORQUE the three nuts (21) to between 1.1 and 0.90 m.daN (97.35 and 79.65 lbf.in ) T.
       4 Install the three electrical wires (20).
       5 Install the three washers (19) and screws (18) and tighten them.
       6 TORQUE the three screws (18) to between 0.122 and 0.098 m.daN (10.80 and 8.67 lbf.in ) T.
     (d) Make sure that the three electrical cables (15) are clean and in the correct condition.
       1 Install the three electrical cables (15) to the contactor base.
       2 Install the three washers (16) and nuts (17) and tighten them.
       3 TORQUE the three nuts (17) to between 1.1 and 0.90 m.daN (97.35 and 79.65 lbf.in ) T.
     (e) Install the lightning protection module (Ref. AMM TASK 24-22-51-400-001).
Subtask 24-22-55-420-051-A ** ON A/C NOT FOR ALL
B. Installation of the Contactor
F Contactors ** ON A/C NOT FOR ALL
   (1) Install the contactor (2) on the six tapped barrels of the contactor base (5).
   (2) TORQUE the six captive screws (3) to between 0.60 and 0.50 m.daN (53.10 and 44.25 lbf.in ) T.
   (3) Remove the blanking caps from the electrical connector (1) and the electrical receptacle (6).
   (4) Make sure that the electrical connector (1) is clean and in the correct condition.
   (5) Connect the electrical connector (1).
Subtask 24-22-55-420-052-B ** ON A/C NOT FOR ALL
CAUTION: REFER TO THE MATCH MARKS MADE DURING THE REMOVAL WHEN YOU CONNECT THE ELECTRICAL WIRES. INCORRECT CONNECTION OF THE WIRES WILL CAUSE DAMAGE TO EQUIPMENT.
C. Installation of the Generator 1(2) Contactor-Module
F Generator 1(2) Contactor-Module ** ON A/C NOT FOR ALL
   (1) Install the generator 1(2) contactor-module (5) in the correct position, if removed.
   (2) Install the eight washers (9) and the screws (10) and tighten them.
   (3) TORQUE the screws (10) to between 0.30 and 0.27 m.daN (26.55 and 23.89 lbf.in ) T.
   (4) Install the three jumpers (6) between the generator 1(2) contactor-module (5) and the adjacent module.
   (5) Install the six washers (7) and the screws (8) and tighten them.
   (6) TORQUE the six screws (8) to between 0.70 and 0.52 m.daN (61.95 and 46.02 lbf.in ) T.
   (7) Make sure that the three electrical cables (3) and the electrical wires (16) are clean and in the correct condition.
   (8) Install the three electrical cables (3).
   (9) Install the three washers (2) and the nuts (1) and tighten them.
   (10) TORQUE the three nuts (1) to between 1.1 and 0.90 m.daN (97.35 and 79.65 lbf.in ) T.
   (11) Install the three electrical wires (16).
   (12) Install the three washers (15) and the screws (14) and tighten them.
   (13) TORQUE the three screws (14) to between 0.122 and 0.098 m.daN (10.80 and 8.67 lbf.in ) T.
   (14) Make sure that the six electrical cables (13) are clean and in the correct condition.
   (15) Install the six electrical cables (13) on the generator 1(2) contactor-module (5).
   (16) Install the three washers (12) and the screws (11) and tighten them.
   (17) TORQUE the three screws (11) to between 0.70 and 0.52 m.daN (61.95 and 46.02 lbf.in ) T.
   (18) Install the lightning protection module (Ref. AMM TASK 24-22-51-400-001).
Subtask 24-22-55-420-051-B ** ON A/C NOT FOR ALL
D. Installation of the Contactor
F Contactors ** ON A/C NOT FOR ALL
   (1) Install the contactor (2) on the generator 1(2) contactor-module (5).
   (2) TORQUE the six captive screws (3) to between 0.60 and 0.50 m.daN (53.10 and 44.25 lbf.in ) T.
   (3) Remove the blanking caps from the electrical connector (6) and the electrical receptacle (1).
   (4) Make sure that the electrical connector (6) is clean and in the correct condition.
   (5) Connect the electrical connector (6).
Subtask 24-22-55-710-053-A
E. Test of the Bus Transfer Contactor (BTC)
   (1) FOR [11XU1] (BTC-1), [11XU2] (BTC-2)
NOTE: This test is for BTC 1. For the BTC 2, use the indications between the parentheses.
     (a) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
     (b) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
     (c) On the ECAM control panel:
  • Push the ELEC key to get the ELEC system page.
     (d) On the lower ECAM display unit, make sure that the green lines between the EXT PWR and AC 1(2) are present.
     (e) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002)
     (f) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
Subtask 24-22-55-710-054-A ** ON A/C NOT FOR ALL
F. Test of the Generator Line Contactor (GLC)
   (1) FOR [9XU1] (GLC-1), [9XU2] (GLC-2)
NOTE: This test is for GLC 1. For the GLC 2, use the indications between the parentheses.
     (a) Start the engine 1(2) automatically (Ref. AMM TASK 71-00-00-710-003).
     (b) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
     (c) On the ECAM control panel:
  • Push the ELEC key to get the ELEC system page.
     (d) On the lower ECAM display unit, make sure that the green line between GEN 1(2) and AC 1(2) is present.
     (e) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002)
     (f) Stop the engine 1(2) (Ref. AMM TASK 71-00-00-710-028).
Subtask 24-22-55-710-054-B ** ON A/C NOT FOR ALL
F. Test of the Generator Line Contactor (GLC)
   (1) FOR [9XU1] (GLC-1), [9XU2] (GLC-2)
NOTE: This test is for GLC 1. For the GLC 2, use the indications between the parentheses.
     (a) Start the engine 1(2) automatically (Ref. AMM TASK 71-00-00-710-043).
     (b) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
     (c) On the ECAM control panel:
  • Push the ELEC key to get the ELEC system page.
     (d) On the lower ECAM display unit, make sure that green line between GEN 1(2) and AC 1(2) is present.
     (e) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002)
     (f) Stop the engine 1(2) (Ref. AMM TASK 71-00-00-710-018).
Subtask 24-22-55-710-054-C ** ON A/C NOT FOR ALL
F. Test of the Generator Line Contactor (GLC)
   (1) FOR [9XU1] (GLC-1), [9XU2] (GLC-2)
NOTE: This test is for GLC 1. For the GLC 2, use the indications between the parentheses.
     (a) Start the engine 1(2) automatically (Ref. AMM TASK 71-00-00-710-003).
     (b) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
     (c) On the ECAM control panel:
  • Push the ELEC key to get the ELEC system page.
     (d) On the lower ECAM display unit, make sure that the green line between GEN 1(2) and AC 1(2) is present.
     (e) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002)
     (f) Stop the engine 1(2) (Ref. AMM TASK 71-00-00-710-028).
Subtask 24-22-55-710-054-F ** ON A/C NOT FOR ALL
F. Test of the Generator Line Contactor (GLC)
   (1) FOR [9XU1] (GLC-1), [9XU2] (GLC-2)
NOTE: This test is for GLC1. For GLC2, use the indications between parentheses.
     (a) Start engine 1(2) (normal automatic start) (Ref. AMM TASK 71-00-00-860-823).
     (b) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
     (c) On ECAM control panel, push the ELEC key to get the ELEC system page.
     (d) On the lower ECAM DU, make sure that the green line between the GEN 1(2) and AC 1(2) indications is shown.
     (e) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
     (f) Stop engine 1(2) (Ref. AMM TASK 71-00-00-860-814).
5. Close-up
Subtask 24-22-55-410-051-A
A. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Install the access door (4) on left lower side of the panel 120VU.
   (3) Install the Third Occupant seat (Ref. AMM TASK 25-11-41-400-001).
   (4) Remove the WARNING NOTICE(S).
   (5) Close the access door 121AL.
   (6) Remove the access platform(s).
[Rev.10 from 2021] 2026.03.31 23:22:17 UTC
"Aviabrain" 2025