Operational Test of the Emergency Shutdown Circuit (using the APU Shut Off Switch 1KL) (APS 3200)

TASK 49-62-00-710-004-A
Operational Test of the Emergency Shutdown Circuit (using the APU Shut Off Switch 1KL) (APS 3200)

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. 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

3. Job Set-up
Subtask 49-62-00-865-053-A ** ON A/C NOT FOR ALL

A. Make sure that this(these) circuit breaker(s) is(are) closed:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	APU/FUEL/BLOW OFF/PUMP	2QC	B14
121VU	APU/FUEL/BLOW OFF/CTL	1QC	K39
121VU	APU/FIRE AND OVHT/DET/LOOP B	2WG	L44
121VU	APU/FIRE AND OVHT/DET/LOOP A	1WG	L43
121VU	APU/APU/CTL	2KD	L42
121VU	APU/ECB/SPLY	1KD	L41
121VU	APU/FIRE/EXTIG/SQUIB/B	2WF	L39
121VU	APU/FIRE/EXTIG/SQUIB/A	1WF	L38
121VU	APU/FIRE/LP VALVE/NORM	4WF	M42
121VU	APU/FIRE/LP VALVE/STBY	3WF	M41
121VU	APU/FUEL/LP VALVE/CTL	1QF	M40
121VU	APU/FUEL/LP VALVE/SPLY	2QF	M39
121VU	APU/FUEL/PUMP/CTL	3QC	M38

Subtask 49-62-00-860-052-A ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).

4. Procedure
Subtask 49-62-00-710-055-A ** ON A/C NOT FOR ALL

A. Operational Test of the Emergency Shutdown System

ACTION	RESULT
1.In the INT LT section of overhead panel 25VU: Put the ANN LT switch in the TEST position.	In the cockpit: All annunciator lights come on fully bright.
2.In the INT LT section of overhead panel 25VU: Put the ANN LT switch in the BRT position.	In the cockpit: The applicable annunciator lights go off.
3.On overhead panel 25VU: Push the pushbutton APU MASTER SW to the ON position.	On overhead panel 25VU: The ON legend in the pushbutton APU MASTER SW comes on.
4.On the ECAM control panel: Push the FUEL pushbutton switch.	On the ECAM lower display unit: The FUEL page comes into view.
	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in the open position.
5.On external power control-panel 108VU: Push the APU SHUT OFF pushbutton switch (guarded red).	On the ECAM upper display unit: The warning, APU EMER SHUT DOWN MASTER SW .... OFF comes on.
	On glareshield panels 130VU and 131VU: The MASTER CAUT lights come on, A single chime is heard.
	On overhead panel 25VU: The FAULT legend in the pushbutton APU MASTER SW comes on.
	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in the closed position.
6.On external power control-panel 108VU: Release the APU SHUT OFF pushbutton switch and close the guard.
7.On overhead panel 25VU: Release the APU MASTER SW pushbutton switch.	On overhead panel 25VU: The FAULT legend in the APU MASTER SW pushbutton switch goes off, The ON legend in the APU MASTER SW pushbutton switch goes off.
	On the ECAM upper display unit: The warning, MASTER SW .... OFF goes off.
8.On glareshield panel 130VU or 131VU: Push the MASTER CAUT pushbutton switch.	On glareshield panels 130VU and 131VU: The MASTER CAUT lights go off.
9.On overhead panel 25VU: Push and release the APU MASTER SW twice (on/off) to reset the ECB (59KD).	On the ECAM upper display unit: The warning, APU EMER SHUT DOWN goes off.
10.On overhead panel 25VU: push the APU MASTER SW to ON position.	On overhead panel 25VU: The ON legend in the pushbutton APU MASTER SW comes on.
	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in the open position.
11.On overhead panel 25VU: Release the APU MASTER SW pushbutton switch.	On overhead panel 25VU: The FAULT legend in the APU MASTER SW pushbutton switch goes off, The ON legend in the APU MASTER SW pushbutton switch goes off.

5. Close-up
Subtask 49-62-00-860-053-A ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.
(1) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(2) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.01 01:31:53 UTC