Operational Check Of Automatic Fire Extinguishing Circuit And Test LP Fuel-Valve Operation using Each Individual Motor In Turn And Test APU

TASK 26-22-00-710-004-A
Operational Check Of Automatic Fire Extinguishing Circuit And Test LP Fuel-Valve Operation using Each Individual Motor In Turn And Test APU

WARNING: BE VERY CAREFUL WHEN YOU MOVE A FULL FIRE EXTINGUISHER BOTTLE. A SUDDEN OR HEAVY SHOCK TO A FULL BOTTLE CAN CAUSE UNWANTED DISCHARGE AND INJURY TO PERSONS.

WARNING: BE CAREFUL WHEN YOU PUSH THE "APU/MSTR" P/BSW TO ON. THE IGNITION BOX WILL BECOME ENERGIZED FOR APPROXIMATELY 3 SECONDS. THIS CAN CAUSE INJURY OR KILL PERSONS.

ZONE: 210

1. Reason for the Job
Refer to the MPD TASK: 262200-06
OPERATIONAL CHECK OF APU FIRE PUSH BUTTON SWITCH FUNCTIONS (IN SINGLE CHANNEL CONFIGURATION) AND TEST APU LP FUEL VALVE OPERATION USING EACH INDIVIDUAL MOTOR IN TURN AND TEST APU EMERGENCY SHUTDOWN CIRCUIT
2. Job Set-up Information
A. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD

B. 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 26-22-00-860-056-A

A. 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).

Subtask 26-22-00-865-064-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
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/AUTO/EXTIG/GND/TEST	30WF	L40
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

4. Procedure
Subtask 26-22-00-710-140-A

A. Test of the Fire Emergency-Stop Relays 5WF and 6WF for ECB PN: 304640-2

ACTION	RESULT
1.In the INT LT section of overhead panel 25VU: Set 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: Set the ANN LT switch in the BRT position.	In the cockpit: All applicable annunciator lights go off.
3.On circuit-breaker panel 121VU: Open circuit breaker APU/FIRE/LP VALVE/STBY 3WF.
4.On overhead panel 25VU: Push the APU MASTER SW pushbutton switch.	On overhead panel 25VU: The ON legend of the APU MASTER SW pushbutton switch comes on.
5.On the ECAM control panel: Push the FUEL pushbutton switch.	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in open position.
6.On APU FIRE panel 20VU: Lift the guard and release the APU FIRE pushbutton switch.	On APU FIRE panel 20VU: The SQUIB legend of the AGENT pushbutton switch comes on.
	On glareshield panels 130VU and 131VU: The MASTER CAUT lights come on. A single chime operates.
	On overhead panel 25VU: The FAULT legend of the APU MASTER SW pushbutton switch comes on.
	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in closed position.
7.On APU FIRE panel 20VU: Push the APU FIRE pushbutton switch and close the guard. Make sure that the APU FIRE pushbutton switch is in its latched position before you close the guard.	On APU FIRE panel 20VU: The SQUIB legend of the AGENT pushbutton switch goes off.
	On overhead panel 25VU: The FAULT legend of the APU MASTER SW pushbutton switch goes off.
8.On overhead panel 25VU: Release the APU MASTER SW pushbutton switch.	On overhead panel 25VU: The ON legend of the APU MASTER SW pushbutton switch goes off.
	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in open position and then in closed position.
9.On glareshield panel 130VU or 131VU: Push the MASTER CAUT pushbutton switch.	On glareshield panels 130VU and 131VU: The MASTER CAUT lights go off.
10.On circuit-breaker panel 121VU: Close circuit breaker APU/FIRE/LP VALVE/STBY 3WF, Open circuit breaker APU/FIRE/LP VALVE/NORM 4WF.
11.On overhead panel 25VU: Push the APU MASTER SW pushbutton switch.	On overhead panel 25VU: The ON legend of the APU MASTER SW pushbutton switch comes on.
	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in open position.
12.On APU FIRE panel 20VU: Lift the guard and release the APU FIRE pushbutton switch.	On APU FIRE panel 20VU: The SQUIB legend of the AGENT pushbutton switch comes on.
	On glareshield panels 130VU and 131VU: The MASTER CAUT lights come on. A single chime operates.
	On overhead panel 25VU: The FAULT legend of the APU MASTER SW pushbutton switch comes on.
	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in closed position.
13.On APU FIRE panel 20VU: Push the APU FIRE pushbutton switch and close the guard. Make sure that the APU FIRE pushbutton switch is in its latched position before you close the guard.	On APU FIRE panel 20VU: The SQUIB legend of the AGENT pushbutton switch goes off.
	On overhead panel 25VU: The FAULT legend of the APU MASTER SW pushbutton switch goes off.
14.On overhead panel 25VU: Release the APU MASTER SW pushbutton switch.	On overhead panel 25VU: The ON legend of the APU MASTER SW pushbutton switch goes off.
	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in open position and then in closed position.
15.On glareshield panel 130VU or 131VU: Push the MASTER CAUT pushbutton switch.	On glareshield panels 130VU and 131VU: The MASTER CAUT lights go off.
16.On circuit-breaker panel 121VU: Close circuit breaker APU/FIRE/LP VALVE/NORM 4WF.

Subtask 26-22-00-710-142-B

B. Test of the Fire Emergency-Stop Relays 5WF and 6WF for ECB other than PN: 3888394-XXXXXX, 3888579-XXX, 450000XX, 304640-2 and 304817-X

ACTION	RESULT
1.In the INT LT section of overhead panel 25VU: Set 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: Set the ANN LT switch in the BRT position.	In the cockpit: All applicable annunciator lights go off.
3.On circuit-breaker panel 121VU: Open circuit breaker APU/FIRE/LP VALVE/STBY 3WF.
4.On overhead panel 25VU: Push the APU MASTER SW pushbutton switch.	On overhead panel 25VU: The ON legend of the APU MASTER SW pushbutton switch comes on.
5.On the ECAM control panel: Push the FUEL pushbutton switch.	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in open position.
6.On APU FIRE panel 20VU: Lift the guard and release the APU FIRE pushbutton switch.	On APU FIRE panel 20VU: The SQUIB legend of the AGENT pushbutton switch comes on.
	On the ECAM upper display unit: The warning APU EMER SHUTDOWN MASTER SW...OFF comes on
	On glareshield panels 130VU and 131VU: The MASTER CAUT lights come on. A single chime operates.
	On overhead panel 25VU: The FAULT legend of the APU MASTER SW pushbutton switch comes on.
	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in closed position.
7.On APU FIRE panel 20VU: Push the APU FIRE pushbutton switch and close the guard. Make sure that the APU FIRE pushbutton switch is in its latched position before you close the guard.	On APU FIRE panel 20VU: The SQUIB legend of the AGENT pushbutton switch goes off.
	On overhead panel 25VU: The FAULT legend of the APU MASTER SW pushbutton switch goes off.
8.On overhead panel 25VU: Release the APU MASTER SW pushbutton switch.	On overhead panel 25VU: The ON legend of the APU MASTER SW pushbutton switch goes off.
	On the ECAM upper display unit: The warning MASTER SW...OFF goes off
	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in open position and then in closed position.
9.On glareshield panel 130VU or 131VU: Push the MASTER CAUT pushbutton switch.	On glareshield panels 130VU and 131VU: The MASTER CAUT lights go off.
10.On overhead panel 25VU: Push the APU MASTER SW pushbutton switch two times (on/off) to reset the ECB.	On the ECAM upper display unit: The warning APU EMER SHUTDOWN goes off
11.On circuit-breaker panel 121VU: Close circuit breaker APU/FIRE/LP VALVE/STBY 3WF, Open circuit breaker APU/FIRE/LP VALVE/NORM 4WF.
12.On overhead panel 25VU: Push the APU MASTER SW pushbutton switch.	On overhead panel 25VU: The ON legend of the APU MASTER SW pushbutton switch comes on.
13.On the ECAM control panel: Push the FUEL pushbutton switch.	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in open position.
14.On APU FIRE panel 20VU: Lift the guard and release the APU FIRE pushbutton switch.	On APU FIRE panel 20VU: The SQUIB legend of the AGENT pushbutton switch comes on.
	On the ECAM upper display unit: The warning APU EMER SHUTDOWN MASTER SW...OFF comes on
	On glareshield panels 130VU and 131VU: The MASTER CAUT lights come on. A single chime operates.
	On overhead panel 25VU: The FAULT legend of the APU MASTER SW pushbutton switch comes on.
	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in closed position.
15.On APU FIRE panel 20VU: Push the APU FIRE pushbutton switch and close the guard. Make sure that the APU FIRE pushbutton switch is in its latched position before you close the guard.	On APU FIRE panel 20VU: The SQUIB legend of the AGENT pushbutton switch goes off.
	On overhead panel 25VU: The FAULT legend of the APU MASTER SW pushbutton switch goes off.
16.On overhead panel 25VU: Release the APU MASTER SW pushbutton switch.	On overhead panel 25VU: The ON legend of the APU MASTER SW pushbutton switch goes off.
	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in open position and then in closed position.
	The warning MASTER SW...OFF goes off.
17.On glareshield panel 130VU or 131VU: Push the MASTER CAUT pushbutton switch.	On glareshield panels 130VU and 131VU: The MASTER CAUT lights go off.
18.On overhead panel 25VU: Push the APU MASTER SW pushbutton switch two times (on/off) to reset the ECB.	On the ECAM upper display unit: The warning MASTER SW...OFF goes off.
19.On circuit-breaker panel 121VU: Close circuit breaker APU/FIRE/LP VALVE/NORM 4WF.

Subtask 26-22-00-710-143-B

C. Test of the Fire Emergency-Stop Relays 5WF and 6WF for ECB PN: 3888394-XXXXXX, 3888579-XXX and 450000XX

ACTION	RESULT
1.In the INT LT section of overhead panel 25VU: Set 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: Set the ANN LT switch in the BRT position.	In the cockpit: All applicable annunciator lights go off.
3.On circuit-breaker panel 121VU: Open circuit breaker APU/FIRE/LP VALVE/STBY 3WF.
4.On overhead panel 25VU: Push the APU MASTER SW pushbutton switch.	On overhead panel 25VU: The ON legend of the APU MASTER SW pushbutton switch comes on.
5.On the ECAM control panel: Push the FUEL pushbutton switch.	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in open position.
6.On APU FIRE panel 20VU: Lift the guard and release the APU FIRE pushbutton switch.	On APU FIRE panel 20VU: The SQUIB legend of the AGENT pushbutton switch comes on.
	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 operates.
	On overhead panel 25VU: The FAULT legend of the APU MASTER SW pushbutton switch comes on.
	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in closed position.
7.On APU FIRE panel 20VU: Push the APU FIRE pushbutton switch and close the guard. Make sure that the APU FIRE pushbutton switch is in its latched position before you close the guard.	On APU FIRE panel 20VU: The SQUIB legend of the AGENT pushbutton switch goes off.
8.On overhead panel 25VU: Release the APU MASTER SW pushbutton switch.	On overhead panel 25VU: The FAULT legend of the APU MASTER SW pushbutton switch goes off. The ON legend of the APU MASTER SW pushbutton switch goes off.
	On the ECAM upper display unit: The warning MASTER SW...OFF goes off.
9.On glareshield panel 130VU or 131VU: Push the MASTER CAUT pushbutton switch.	On glareshield panels 130VU and 131VU: The MASTER CAUT lights go off.
10.On overhead panel 25VU: Push the APU MASTER SW pushbutton switch two times (on/off) to reset the ECB.	On the ECAM upper display unit: The warning APU EMER SHUT DOWN goes off.
11.On circuit-breaker panel 121VU: Close circuit breaker APU/FIRE/LP VALVE/STBY 3WF, Open circuit breaker APU/FIRE/LP VALVE/NORM 4WF.
12.On overhead panel 25VU: Push the APU MASTER SW pushbutton switch.	On overhead panel 25VU: The ON legend of the APU MASTER SW pushbutton switch comes on.
13.On the ECAM control panel: Push the FUEL pushbutton switch.	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in open position.
14.On APU FIRE panel 20VU: Lift the guard and release the APU FIRE pushbutton switch.	On APU FIRE panel 20VU: The SQUIB legend of the AGENT pushbutton switch comes on.
	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 operates.
	On overhead panel 25VU: The FAULT legend of the APU MASTER SW pushbutton switch comes on.
	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in closed position.
15.On APU FIRE panel 20VU: Push the APU FIRE pushbutton switch and close the guard. Make sure that the APU FIRE pushbutton switch is in its latched position before you close the guard.	On APU FIRE panel 20VU: The SQUIB legend of the AGENT pushbutton switch goes off.
16.On overhead panel 25VU: Release the APU MASTER SW pushbutton switch.	On overhead panel 25VU: The FAULT legend of the APU MASTER SW pushbutton switch goes off. The ON legend of the APU MASTER SW pushbutton switch goes off.
	On the ECAM upper display unit: The warning MASTER SW...OFF goes off.
17.On glareshield panel 130VU or 131VU: Push the MASTER CAUT pushbutton switch.	On glareshield panels 130VU and 131VU: The MASTER CAUT lights go off.
18.On overhead panel 25VU: Push the APU MASTER SW pushbutton switch two times (on/off) to reset the ECB.	On the ECAM upper display unit: The warning APU EMER SHUT DOWN goes off.
19.On circuit-breaker panel 121VU: Close circuit breaker APU/FIRE/LP VALVE/NORM 4WF.

Subtask 26-22-00-710-144-B

D. Test of the Fire Emergency-Stop Relays 5WF and 6WF for ECB PN: 304817-X

ACTION	RESULT
1.In the INT LT section of overhead panel 25VU: Set 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: Set the ANN LT switch in the BRT position.	In the cockpit: All applicable annunciator lights go off.
3.On circuit-breaker panel 121VU: Open circuit breaker APU/FIRE/LP VALVE/STBY 3WF.
4.On overhead panel 25VU: Push the APU MASTER SW pushbutton switch.	On overhead panel 25VU: The ON legend of the APU MASTER SW pushbutton switch comes on.
5.On the ECAM control panel: Push the FUEL pushbutton switch.	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in open position.
6.On APU FIRE panel 20VU: Lift the guard and release the APU FIRE pushbutton switch.	On APU FIRE panel 20VU: The SQUIB legend of the AGENT pushbutton switch comes on.
	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 operates.
	On overhead panel 25VU: The FAULT legend of the APU MASTER SW pushbutton switch comes on.
	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in closed position.
7.On APU FIRE panel 20VU: Push the APU FIRE pushbutton switch and close the guard. Make sure that the APU FIRE pushbutton switch is in its latched position before you close the guard.	On APU FIRE panel 20VU: The SQUIB legend of the AGENT pushbutton switch goes off.
	On overhead panel 25VU: The FAULT legend of the APU MASTER SW pushbutton switch goes off.
8.On overhead panel 25VU: Release the APU MASTER SW pushbutton switch.	On overhead panel 25VU: The ON legend of the APU MASTER SW pushbutton switch goes off.
	On the ECAM upper display unit: The warning MASTER SW...OFF goes off.
9.On glareshield panel 130VU or 131VU: Push the MASTER CAUT pushbutton switch.	On glareshield panels 130VU and 131VU: The MASTER CAUT lights go off.
10.On overhead panel 25VU: Push the APU MASTER SW pushbutton switch two times (on/off) to reset the ECB.	On the ECAM upper display unit: The warning APU EMER SHUT DOWN goes off.
11.On circuit-breaker panel 121VU: Close circuit breaker APU/FIRE/LP VALVE/STBY 3WF, Open circuit breaker APU/FIRE/LP VALVE/NORM 4WF.
12.On overhead panel 25VU: Push the APU MASTER SW pushbutton switch.	On overhead panel 25VU: The ON legend of the APU MASTER SW pushbutton switch comes on.
13.On the ECAM control panel: Push the FUEL pushbutton switch.	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in open position.
14.On APU FIRE panel 20VU: Lift the guard and release the APU FIRE pushbutton switch.	On APU FIRE panel 20VU: The SQUIB legend of the AGENT pushbutton switch comes on.
	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 operates.
	On overhead panel 25VU: The FAULT legend of the APU MASTER SW pushbutton switch comes on.
	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in closed position.
15.On APU FIRE panel 20VU: Push the APU FIRE pushbutton switch and close the guard. Make sure that the APU FIRE pushbutton switch is in its latched position before you close the guard.	On APU FIRE panel 20VU: The SQUIB legend of the AGENT pushbutton switch goes off.
	On overhead panel 25VU: The FAULT legend of the APU MASTER SW pushbutton switch goes off.
16.On overhead panel 25VU: Release the APU MASTER SW pushbutton switch.	On overhead panel 25VU: The ON legend of the APU MASTER SW pushbutton switch goes off.
	On the ECAM upper display unit: The warning MASTER SW...OFF goes off.
17.On glareshield panel 130VU or 131VU: Push the MASTER CAUT pushbutton switch.	On glareshield panels 130VU and 131VU: The MASTER CAUT lights go off.
18.On overhead panel 25VU: Push the APU MASTER SW pushbutton switch two times (on/off) to reset the ECB.	On the ECAM upper display unit: The warning APU EMER SHUT DOWN goes off.
19.On circuit-breaker panel 121VU: Close circuit breaker APU/FIRE/LP VALVE/NORM 4WF.

Subtask 26-22-00-710-146-A

E. APU LP Fuel-Valve dual Actuator Test for ECB PN: 304640-2

ACTION	RESULT
1.In the INT LT section of overhead panel 25VU: Set 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: Set the ANN LT switch in the BRT position.	In the cockpit: All applicable annunciator lights go off.
3.On circuit breaker panel 121VU: Open circuit breaker APU/FUEL/LP VALVE/CTL 1QF.
4.On overhead panel 25VU: Push the pushbutton APU MASTER SW.	On overhead panel 25VU: The ON legend of the APU MASTER SW pushbutton switch comes on.
5.On the ECAM control panel: push the FUEL pushbutton switch.	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in open position.
6.On APU FIRE panel 20VU: Lift the guard and release the APU FIRE pushbutton switch.	On APU FIRE panel 20VU: The SQUIB legend of the AGENT pushbutton switch comes on.
	On glareshield panels 130VU and 131VU: The MASTER CAUT lights come on A single chime operates.
	On overhead panel 25VU: The FAULT legend of the APU MASTER SW pushbutton switch comes on.
	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in closed position.
7.On APU FIRE panel 20VU: Push the APU FIRE pushbutton switch and close the guard.	On APU FIRE panel 20VU: The SQUIB legend of the AGENT pushbutton switch goes off.
	On overhead panel 25VU: The FAULT legend of the APU MASTER SW pushbutton switch goes off.
8.On overhead panel 25VU: Release the APU MASTER SW pushbutton switch.	On overhead panel 25VU: The ON legend of the APU MASTER SW pushbutton switch goes off.
	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in open position and then in closed position.
9.On glareshield panel 130VU or 131VU: Push the MASTER CAUT pushbutton switch.	On glareshield panels 130VU and 131VU: The MASTER CAUT lights go off.
10.On circuit breaker panel 121VU: Close circuit breaker APU/FUEL/LP VALVE/CTL 1QF, Open circuit breaker APU/FUEL/LP VALVE/SPLY 2QF.
11.On overhead panel 25VU: Push the APU MASTER SW pushbutton switch.	On overhead panel 25VU: The ON legend of the APU MASTER SW pushbutton switch comes on.
	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in open position.
12.On APU FIRE panel 20VU: Lift the guard and release the APU FIRE pushbutton switch.	On APU FIRE panel 20VU: The SQUIB legend of the AGENT pushbutton switch comes on.
	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in closed position.
13.On APU FIRE panel 20VU: Push the APU FIRE pushbutton switch and close the guard.	On APU FIRE panel 20VU: The SQUIB legend of the AGENT pushbutton switch goes off.
	On overhead panel 25VU: The FAULT legend of the APU MASTER SW pushbutton switch goes off.
14.On overhead panel 25VU: Release the APU MASTER SW pushbutton switch.	On overhead panel 25VU: The ON legend of the APU MASTER SW pushbutton switch goes off.
	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in open position and then in closed position.
15.On glareshield panel 130VU or 131VU: Push the MASTER CAUT pushbutton switch.	On glareshield panels 130VU and 131VU: The MASTER CAUT lights go off.
16.On circuit breaker panel 121VU: Close circuit breaker APU/FUEL/LP VALVE/SPLY 2QF.

Subtask 26-22-00-710-148-B

F. APU LP Fuel-Valve dual Actuator Test for ECB other than PN: 3888394-XXXXXX, 3888579-XXX, 450000XX, 304640-2 and 304817-X

ACTION	RESULT
1.In the INT LT section of overhead panel 25VU: Set 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: Set the ANN LT switch in the BRT position.	In the cockpit: All applicable annunciator lights go off.
3.On circuit-breaker panel 121VU: Open circuit breaker APU/FUEL/LP VALVE/CTL 1QF.
4.On overhead panel 25VU: Push the APU MASTER SW pushbutton switch.	On overhead panel 25VU: The ON legend of the APU MASTER SW pushbutton switch comes on.
5.On the ECAM control panel: Push the FUEL pushbutton switch.	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in open position.
6.On APU FIRE panel 20VU: Lift the guard and release the APU FIRE pushbutton switch.	On APU FIRE panel 20VU: The SQUIB legend of the AGENT pushbutton switch comes on.
	On the ECAM upper display unit: The warning APU EMER SHUTDOWN MASTER SW...OFF comes on
	On glareshield panels 130VU and 131VU: The MASTER CAUT lights come on. A single chime operates.
	On overhead panel 25VU: The FAULT legend of the APU MASTER SW pushbutton switch comes on.
	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in closed position
7.On APU FIRE panel 20VU: Push the APU FIRE pushbutton switch and close the guard.	On APU FIRE panel 20VU: The SQUIB legend of the AGENT pushbutton switch goes off.
	On overhead panel 25VU: The FAULT legend of the APU MASTER SW pushbutton switch goes off.
8.On overhead panel 25VU: Release the APU MASTER SW pushbutton switch.	On overhead panel 25VU: The ON legend of the APU MASTER SW pushbutton switch goes off.
	On the ECAM upper display unit: The warning MASTER SW...OFF goes off
	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in open position and then in closed position.
9.On glareshield panel 130VU or 131VU: Push the MASTER CAUT pushbutton switch.	On glareshield panels 130VU and 131VU: The MASTER CAUT lights go off.
10.On overhead panel 25VU: Push the APU MASTER SW pushbutton switch two times (on/off) to reset the ECB.	On the ECAM upper display unit: The warning APU EMER SHUTDOWN goes off
11.On circuit-breaker panel 121VU: Close circuit breaker APU/FUEL/LP VALVE/CTL 1QF, Open circuit breaker APU/FUEL/LP VALVE/SPLY 2QF.
12.On overhead panel 25VU: Push the APU MASTER SW pushbutton switch.	On overhead panel 25VU: The ON legend of the APU MASTER SW pushbutton switch comes on.
	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in open position
13.On APU FIRE panel 20VU: Lift the guard and release the APU FIRE pushbutton switch.	On APU FIRE panel 20VU: The SQUIB legend of the AGENT pushbutton switch comes on.
	On the ECAM upper display unit: The warning APU EMER SHUTDOWN MASTER SW...OFF comes on
	On glareshield panels 130VU and 131VU: The MASTER CAUT lights come on. A single chime operates.
	On overhead panel 25VU: The FAULT legend of the APU MASTER SW pushbutton switch comes on.
14.On APU FIRE panel 20VU: Push the APU FIRE pushbutton switch and close the guard.	On APU FIRE panel 20VU: The SQUIB legend of the AGENT pushbutton switch goes off.
	On overhead panel 25VU: The FAULT legend of the APU MASTER SW pushbutton switch goes off.
15.On overhead panel 25VU: Release the APU MASTER SW pushbutton switch.	On overhead panel 25VU: The ON legend of the APU MASTER SW pushbutton switch goes off.
	On the ECAM upper display unit: The warning MASTER SW...OFF goes off.
	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in open position and then in closed position.
16.On glareshield panel 130VU or 131VU: Push the MASTER CAUT pushbutton switch.	On glareshield panels 130VU and 131VU: The MASTER CAUT lights go off.
17.On overhead panel 25VU: Push the APU MASTER SW pushbutton switch two times (on/off) to reset the ECB.	On the ECAM upper display unit: The warning APU EMER SHUTDOWN goes off.
18.On circuit-breaker panel 121VU: Close circuit breaker APU/FUEL/LP VALVE/SPLY 2QF.

Subtask 26-22-00-710-149-B

G. APU LP Fuel-Valve dual Actuator Test for ECB PN: 3888394-XXXXXX, 3888579-XXX and 450000XX

ACTION	RESULT
1.In the INT LT section of overhead panel 25VU: Set the ANN LT switch in the TEST position.	In the cockpit: All annunciator lights come on brightly.
2.In the INT LT section of overhead panel 25VU: Set the ANN LT switch in the BRT position.	In the cockpit: All applicable annunciator lights go off.
3.On circuit breaker panel 121VU: Open circuit breaker APU/FUEL/LP VALVE/CTL 1QF.
4.On overhead panel 25VU: Push the APU MASTER SW pushbutton switch to the ON position.	On overhead panel 25VU: The ON legend of the APU MASTER SW pushbutton switch comes on.
5.On the ECAM control panel: Push the FUEL pushbutton switch.	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in open position.
6.On APU FIRE panel 20VU: Lift the guard and release the APU FIRE pushbutton switch.	On APU FIRE panel 20VU: The SQUIB legend of the AGENT pushbutton switch comes on.
	On the ECAM upper display unit: The warning, APU EMER SHUTDOWN MASTER SW .... OFF comes on.
	On glareshield panels 130VU and 131VU: The MASTER CAUT lights come on. A single chime operates.
	On overhead panel 25VU: The FAULT legend of the APU MASTER SW pushbutton switch comes on.
	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in closed position.
7.On APU FIRE panel 20VU: Push the APU FIRE pushbutton switch and close the guard.	On APU FIRE panel 20VU: The SQUIB legend of the AGENT pushbutton switch goes off.
8.On overhead panel 25VU: Release the APU MASTER SW pushbutton switch.	On overhead panel 25VU: The FAULT legend of the APU MASTER SW pushbutton switch goes off. The ON legend of the APU MASTER SW pushbutton switch goes off.
	On the ECAM upper display unit: The warning, MASTER SW .... OFF goes off.
9.On glareshield panel 130VU or 131VU: Push the MASTER CAUT pushbutton switch.	On glareshield panels 130VU and 131VU: The MASTER CAUT lights go off.
10.On overhead panel 25VU: Push the APU MASTER SW pushbutton switch two times (on/off) to reset the ECB.	On the ECAM upper display unit: The warning, APU EMER SHUT DOWN goes off.
11.On circuit breaker panel 121VU: Close circuit breaker APU/FUEL/LP VALVE/CTL 1QF, Open circuit breaker APU/FUEL/LP VALVE/SPLY 2QF.
12.On overhead panel 25VU: Push the APU MASTER SW pushbutton switch to the ON position.	On overhead panel 25VU: The ON legend of the APU MASTER SW pusshbutton switch comes on.
	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in open position.
13.On APU FIRE panel 20VU: Lift the guard and release the APU FIRE pushbutton switch.	On APU FIRE panel 20VU: The SQUIB legend of the AGENT pushbutton switch comes on.
	On the ECAM upper display unit: The warning, APU EMER SHUTDOWN MASTER SW .... OFF comes on.
	On glareshield panels 130VU and 131VU: The MASTER CAUT lights come on. A single chime operates.
	On overhead panel 25VU: The FAULT legend of the APU MASTER SW pushbutton switch comes on.
	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in closed position.
14.On APU FIRE panel 20VU: Push the APU FIRE pushbutton switch and close the guard.	On APU FIRE panel 20VU: The SQUIB legend of the AGENT pushbutton switch goes off.
15.On overhead panel 25VU: Release the APU MASTER SW pushbutton switch.	On overhead panel 25VU: The FAULT legend of the APU MASTER SW pushbutton switch goes off. The ON legend of the APU MASTER SW pushbutton switch goes off.
	On the ECAM upper display unit: The warning, MASTER SW .... OFF goes off.
16.On glareshield panel 130VU or 131VU: Push the MASTER CAUT pushbutton switch.	On glareshield panels 130VU and 131VU: The MASTER CAUT lights go off.
17.On overhead panel 25VU: Push the APU MASTER SW pushbutton switch two times (on/off) to reset the ECB.	On the ECAM upper display unit: The warning, APU EMER SHUTDOWN goes off.
18.On circuit breaker panel 121VU: Close circuit breaker APU/FUEL/LP VALVE/SPLY 2QF.

Subtask 26-22-00-710-150-B

H. APU LP Fuel-Valve dual Actuator Test for ECB PN: 304817-X

ACTION	RESULT
1.In the INT LT section of overhead panel 25VU: Set the ANN LT switch in the TEST position.	In the cockpit: All annunciator lights come on brightly.
2.In the INT LT section of overhead panel 25VU: Set the ANN LT switch in the BRT position.	In the cockpit: All applicable annunciator lights go off.
3.On circuit breaker panel 121VU: Open circuit breaker APU/FUEL/LP VALVE/CTL 1QF.
4.On overhead panel 25VU: Push the APU MASTER SW pushbutton switch to the ON position.	On overhead panel 25VU: The ON legend of the APU MASTER SW pushbutton switch comes on.
5.On the ECAM control panel: Push the FUEL pushbutton switch.	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in open position.
6.On APU FIRE panel 20VU: Lift the guard and release the APU FIRE pushbutton switch.	On APU FIRE panel 20VU: The SQUIB legend of the AGENT pushbutton switch comes on.
	On the ECAM upper display unit: The warning, APU EMER SHUTDOWN MASTER SW .... OFF comes on.
	On glareshield panels 130VU and 131VU: The MASTER CAUT lights come on. A single chime operates.
	On overhead panel 25VU: The FAULT legend of the APU MASTER SW pushbutton switch comes on.
	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in closed position.
7.On APU FIRE panel 20VU: Push the APU FIRE pushbutton switch and close the guard.	On APU FIRE panel 20VU: The SQUIB legend of the AGENT pushbutton switch goes off.
	On overhead panel 25VU: The FAULT legend of the APU MASTER SW pushbutton switch goes off.
8.On overhead panel 25VU: Release the APU MASTER SW pushbutton switch.	On overhead panel 25VU: The ON legend of the APU MASTER SW pushbutton switch goes off.
	On the ECAM upper display unit: The warning, MASTER SW .... OFF goes off.
9.On glareshield panel 130VU or 131VU: Push the MASTER CAUT pushbutton switch.	On glareshield panels 130VU and 131VU: The MASTER CAUT lights go off.
10.On overhead panel 25VU: Push the APU MASTER SW pushbutton switch two times (on/off) to reset the ECB.	On the ECAM upper display unit: The warning, APU EMER SHUT DOWN goes off.
11.On circuit breaker panel 121VU: Close circuit breaker APU/FUEL/LP VALVE/CTL 1QF, Open circuit breaker APU/FUEL/LP VALVE/SPLY 2QF.
12.On overhead panel 25VU: Push the APU MASTER SW pushbutton switch to the ON position.	On overhead panel 25VU: The ON legend of the APU MASTER SW pusshbutton switch comes on.
	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in open position.
13.On APU FIRE panel 20VU: Lift the guard and release the APU FIRE pushbutton switch.	On APU FIRE panel 20VU: The SQUIB legend of the AGENT pushbutton switch comes on.
	On the ECAM upper display unit: The warning, APU EMER SHUTDOWN MASTER SW .... OFF comes on.
	On glareshield panels 130VU and 131VU: The MASTER CAUT lights come on. A single chime operates.
	On overhead panel 25VU: The FAULT legend of the APU MASTER SW pushbutton switch comes on.
	On the FUEL page of the ECAM lower display unit: The APU LP fuel-valve symbol is shown in closed position.
14.On APU FIRE panel 20VU: Push the APU FIRE pushbutton switch and close the guard.	On APU FIRE panel 20VU: The SQUIB legend of the AGENT pushbutton switch goes off.
	On overhead panel 25VU: The FAULT legend of the APU MASTER SW pushbutton switch goes off.
15.On overhead panel 25VU: Release the APU MASTER SW pushbutton switch.	On overhead panel 25VU: The ON legend of the APU MASTER SW pushbutton switch goes off.
	On the ECAM upper display unit: The warning, MASTER SW .... OFF goes off.
16.On glareshield panel 130VU or 131VU: Push the MASTER CAUT pushbutton switch.	On glareshield panels 130VU and 131VU: The MASTER CAUT lights go off.
17.On overhead panel 25VU: Push the APU MASTER SW pushbutton switch two times (on/off) to reset the ECB.	On the ECAM upper display unit: The warning, APU EMER SHUTDOWN goes off.
18.On circuit breaker panel 121VU: Close circuit breaker APU/FUEL/LP VALVE/SPLY 2QF.

5. Close-up
Subtask 26-22-00-860-057-A

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 06:38:09 UTC