Functional Test of the LP Fuel Shut Off Valves

TASK 28-24-00-040-001-A
Functional Test of the LP Fuel Shut Off Valves

WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:

THE FLIGHT CONTROLS
THE FLIGHT CONTROL SURFACES
THE LANDING GEAR AND THE RELATED DOORS
COMPONENTS THAT MOVE.

MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.

FIN: 12QM
FIN: 13QM

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 3M (10 FT)
No specific	AR	SAFETY BARRIER(S)
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [12QM] (VALVE-LP FUEL, ENG 1)
522AT
FOR [13QM] (VALVE-LP FUEL, ENG 2)
622AT

C. 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 28-00-00-910-001-A	Fuel Safety Procedures
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 57-41-37-000-003-A	Removal of the Access Panel
TASK 57-41-37-400-003-A	Installation of the Access Panel
LP Fuel Shut Off Valve - Location and Detail ** ON A/C NOT FOR ALL
LP Fuel Shut off Valve - Location and Detail ** ON A/C NOT FOR ALL
Component Location - Cockpit ** ON A/C NOT FOR ALL
Component Location - Cockpit ** ON A/C NOT FOR ALL
Component Location - Cockpit ** ON A/C NOT FOR ALL
Component Location - Cockpit ** ON A/C NOT FOR ALL
Component Location - Cockpit ** ON A/C NOT FOR ALL
Component Location - Cockpit ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 28-24-00-941-060-A

A. Safety Precautions

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

(1) You must obey the fuel safety procedures when you do work on the fuel system (Ref. AMM TASK 28-00-00-910-001).
(2) Put the SAFETY BARRIER(S) in position.
(3) Put a WARNING NOTICE(S) in the cockpit to tell persons not to operate the APU or bleed air.

Subtask 28-24-00-010-056-A

B. Get Access

LP Fuel Shut Off Valve - Location and Detail ** ON A/C NOT FOR ALL

LP Fuel Shut off Valve - Location and Detail ** ON A/C NOT FOR ALL

(1) Put the ACCESS PLATFORM 3M (10 FT) in position.
(2) Remove the applicable access panel(s) (Ref. AMM TASK 57-41-37-000-003):

(a) FOR [12QM] (VALVE-LP FUEL, ENG 1)
remove 522AT
(b) FOR [13QM] (VALVE-LP FUEL, ENG 2)
remove 622AT.

Subtask 28-24-00-860-064-A

C. Aircraft Maintenance Configuration
(1) Make sure that the APU does not operate and there is no bleed air.
(2) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
(3) Do the EIS start procedure (ECAM only) (Ref. AMM TASK 31-60-00-860-001).

Subtask 28-24-00-865-070-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	FUEL/LP VALVE/MOT1/ENG2	2QG	A09
49VU	FUEL/LP VALVE/MOT1/ENG1	1QG	A08
121VU	FUEL/LP VALVE/MOT2/ENG2	4QG	M26
121VU	FUEL/LP VALVE/MOT2/ENG1	3QG	M25

4. Procedure
Subtask 28-24-00-720-060-A

A. Test of the Valve 12QM
(1) In the test that follows, on each operation of the LP valve:

make sure that the see/feel indicator operates smoothly, from the valve open (valve closed) position to the valve closed (valve open) position
make sure that the see/feel indicator marks are accurately aligned in the valve open position
make sure that the see/feel indicator marks are at 90 degrees to each other in the valve closed position.

(2) For the valve 12QM, do this test:

ACTION	RESULT
1.On the panel 121VU:
open, safety and tag the circuit breaker 3QG.	The ENG 1 LP valve MOTOR 2 SUPPLY and CONTROL are isolated.
2.On the ECAM CP:	On the ECAM lower DU:
push (in) the FUEL P/BSW.	the FUEL system page shows the LEFT LP valve indication shows the valve closed (amber cross-line).
3.On the LP valve actuator 9QG:
look at the position of the mechanical see/feel indicator.	The indicator shows that the valve is closed.
4.On the panel 115VU:	On the ECAM lower DU:
put the ENG/MASTER 1 switch to the ON position.	the LEFT LP valve indication shows the valve open (green in-line).
5.On the LP valve actuator 9QG:
listen to the actuator motor and measure the time that it operates for as the LP valve opens.	the actuator motor must not operate for more than 5 seconds.
look at the position of the see/feel indicator.	The indicator shows that the valve is open.
6.On the panel 115VU:	On the ECAM lower DU:
put the ENG/MASTER 1 switch to the OFF position.	the LEFT LP valve indication shows the valve closed (amber cross-line).
7.On the LP valve actuator 9QG:
listen to the actuator motor and measure the time that it operates for as the LP valve closes.	the actuator motor must not operate for more than 5 seconds.
look at the position of the mechanical see/feel indicator.	The indicator shows that the valve is closed.
8.On the panel 121VU:
remove the safety clip and the tag and close the circuit breaker 3QG.	The ENG 1 LP valve MOTOR 2 SUPPLY and CONTROL are energized.
9.On the panel 49VU:
open, safety and tag the circuit breaker 1QG.	The ENG 1 LP valve MOTOR 1 SUPPLY and CONTROL are isolated.
	On the ECAM lower DU: the LEFT LP valve indication shows the valve closed (amber cross-line).
10.On the panel 115VU:	On the ECAM lower DU:
put the ENG/MASTER 1 switch to the ON position:	the LEFT LP valve indication shows the valve open (green in-line).
11.On the LP valve actuator 9QG:
listen to the actuator motor and measure the time that it operates for as the LP valve opens.	the actuator motor must not operate for more than 5 seconds.
look at the position of the mechanical see/feel indicator.	The indicator shows that the valve is open.
12.On the panel 115VU:	On the ECAM lower DU:
put the ENG/MASTER 1 switch to the OFF position.	the LEFT LP valve indication shows the valve closed (amber cross-line).
13.On the LP valve actuator 9QG:
listen to the actuator motor and measure the time that it operates for as the LP valve closes.	the actuator motor must not operate for more than 5 seconds.
look at the position of the mechanical see/feel indicator.	The indicator shows that the valve is closed.
14.On the panel 49VU:
remove the safety clip and the tag and close the circuit breaker 1QG.	The ENG 1 LP valve MOTOR 1 SUPPLY and CONTROL are energized.

Subtask 28-24-00-720-061-A

B. Test of the Valve 13QM
(1) In the test that follows, on each operation of the LP valve:

make sure that the see/feel indicator operates smoothly, from the valve open (valve closed) position to the valve closed (valve open) position
make sure that the see/feel indicator marks are accurately aligned in the valve open position
make sure that the see/feel indicator marks are at 90 degrees to each other in the valve closed position.

(2) For the valve 13QM, do this test:

ACTION	RESULT
1.On the panel 121VU:
open, safety and tag the circuit breaker 4QG.	The ENG 2 LP valve MOTOR 2 SUPPLY and CONTROL are isolated.
2.On the ECAM CP:	On the ECAM lower DU:
push (in) the FUEL P/BSW.	the FUEL system page shows the RIGHT LP valve indication shows the valve closed (amber cross-line).
3.On the ENG 2 LP valve actuator 10QG:
look at the position of the mechanical see/feel indicator.	The indicator shows that the valve is closed.
4.On the panel 115VU:	On the ECAM lower DU:
put the ENG/MASTER 2 switch to the ON position.	the RIGHT LP valve indication shows the valve open (green in-line).
5.On the LP valve actuator 10QG:
listen to the actuator motor and measure the time that it operates for as the LP valve opens.	the actuator motor must not operate for more than 5 seconds.
look at the position of the mechanical see/feel indicator.	The indicator shows that the valve is open.
6.On the panel 115VU:	On the ECAM lower DU:
put the ENG/MASTER 2 switch to the OFF position.	the RIGHT LP valve indication shows the valve closed (amber cross-line).
7.On the LP valve actuator 10QG:
listen to the actuator motor and measure the time that it operates for as the LP valve closes.	the actuator motor must not operate for more than 5 seconds.
look at the position of the mechanical see/feel indicator.	The indicator shows that the valve is closed.
8.On the panel 121VU:
remove the safety clip and the tag and close the circuit breaker 4QG.	The ENG 2 LP valve MOTOR 2 SUPPLY and CONTROL are energized.
9.On the panel 49VU:
open, safety and tag the circuit breaker 2QG.	The ENG 2 LP valve MOTOR 1 SUPPLY and CONTROL are isolated.
	On the ECAM lower DU:
	the RIGHT LP valve indication shows the valve closed (amber cross-line).
10.On the LP valve actuator 10QG:
look at the position of the mechanical see/feel indicator.	The indicator shows that the valve is closed.
11.On the panel 115VU:	On the ECAM lower DU:
put the ENG/MASTER 2 switch to the ON position.	the RIGHT LP valve indication shows the valve open (green in-line).
12.On the LP valve actuator 10QG:
listen to the actuator motor and measure the time that it operates for as the LP valve opens.	the actuator motor must not operate for more than 5 seconds.
look at the position of the mechanical see/feel indicator.	The indicator shows that the valve is open.
13.On the panel 115VU:	On the ECAM lower DU:
put the ENG/MASTER 2 switch to the OFF position.	the RIGHT LP valve indication shows the valve closed (amber cross-line).
14.On the LP valve actuator 10QG:
listen to the actuator motor and measure the time that it operates for as the LP valve closes.	the actuator motor must not operate for more than 5 seconds.
15.On the panel 49VU:
remove the safety clip and the tag and close the circuit breaker 2QG.	The ENG 2 LP valve MOTOR 1 SUPPLY and CONTROL are energized.

5. Close-up
Subtask 28-24-00-410-057-A

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the applicable access panel(s) (Ref. AMM TASK 57-41-37-400-003):

(a) FOR [12QM] (VALVE-LP FUEL, ENG 1)
install 522AT
(b) FOR [13QM] (VALVE-LP FUEL, ENG 2)
install 622AT.

Subtask 28-24-00-860-065-A

B. Aircraft Maintenance Configuration
(1) On the ECAM CP, put the BRT switches to the OFF position.
(2) De-energize the aircraft electrical networks (Ref. AMM TASK 24-41-00-862-002).
(3) Make an applicable entry in the aircraft log.

Subtask 28-24-00-942-059-A

C. Removal of Equipment
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the SAFETY BARRIERS.
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).
(5) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

[Rev.10 from 2021] 2026.04.02 06:17:33 UTC