Operational Test of the Wing-Tank Fuel Control

TASK 28-21-00-710-001-A
Operational Test of the Wing-Tank Fuel Control

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.

1. Reason for the Job
To make sure that the fuel pumps and their low pressure indications operate correctly.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	SAFETY BARRIER(S)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Referenced Information

REFERENCE	DESIGNATION
TASK 12-11-28-650-003-A	Pressure Refuel with Automatic Control
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 28-25-00-650-001-A	Pressure Defuel
TASK 28-25-00-869-001-A	Fuel Transfer
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 28-21-00-941-066-A

A. Safety Precautions
(1) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.

Subtask 28-21-00-860-051-B

B. Aircraft Maintenance Configuration

WARNING: MAKE SURE THAT ALL THE CIRCUITS IN MAINTENANCE ARE ISOLATED BEFORE YOU SUPPLY ELECTRICAL POWER TO THE AIRCRAFT. UNWANTED ELECTRICAL POWER CAN BE DANGEROUS.

WARNING: OBEY THE FUEL SAFETY PROCEDURES.

(1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
(2) Do the EIS start procedure (ECAM only) (Ref. AMM TASK 31-60-00-860-001), then:

on the ECAM control panel (CP), push (in) the FUEL pushbutton switch (P/BSW)
make sure that the FUEL page shows on the ECAM lower Display Unit (DU).

(3) Make sure that each wing tank contains a minimum of 1000 kg (2205 lb) of fuel. If necessary, refuel the wing tanks (Ref. AMM TASK 12-11-28-650-003) or transfer fuel (Ref. AMM TASK 28-25-00-869-001).

4. Procedure

WARNING: WHEN YOU OPERATE THE FUEL PUMPS DURING A MAINTENANCE PROCEDURE, A MAINTENANCE PERSON MUST BE IN THE COCKPIT. THIS PERSON MUST STOP THE PUMPS WHEN THE LOW PRESSURE FAULT LIGHT(S) (ON PANEL 40VU) COME ON, TO PREVENT OPERATION OF THE PUMPS(S) WITHOUT FUEL ('DRY RUNNING'). OPERATION OF THE PUMPS WITHOUT FUEL CAN CAUSE A FIRE.

Subtask 28-21-00-865-055-A

A. Table of the circuit breakers used in this procedure:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
121VU	FUEL/L WING TK/PUMP2 SPLY	7QA	N26
121VU	FUEL/L WING TK/PUMP1 SPLY	1QA	N23
121VU	FUEL/R WING TK/PUMP2 SPLY	8QA	Q26
121VU	FUEL/R WING TK/PUMP1 SPLY	2QA	Q23
123VU	L WING TK/PUMP 1/STBY SPLY	11QA	AD12
123VU	R WING TK/PUMP 1/STBY SPLY	12QA	AE12

Subtask 28-21-00-710-050-A

B. Operational Test of the Wing-Tank Fuel Control

NOTE: Use the above table for the location of the circuit breakers used in the test that follows.

ACTION	RESULT
1.On the panel 40VU:	On the panel 40VU:
make sure that all the fuel-pump P/BSWs are released (out).	make sure all the fuel pump P/BSW OFF lights are on.
2.On the panel 25VU:
put the ANN LT test switch to the TEST position	make sure all the FUEL panel lights come on
put the ANN LT switch to the BRT or DIM position.	the FUEL panel lights go to the set configuration.
3.On the panel 40VU:
push (in) the L TK PUMPS 1 P/BSW.	the L TK PUMPS 1 P/BSW FAULT light may come on momentarily and then go off the L TK PUMPS 1 P/BSW OFF light goes off.
	On the ECAM lower DU:
	the L TK PUMPS 1 symbol changes from an amber cross-line to a green in-line.
4.On the panel 121VU:	On the panel 40VU:
Open, safety and tag this(these) circuit breaker(s): 1QA, 11QA.	the L TK PUMPS 1 P/BSW FAULT light comes on.
	On the ECAM lower DU:
	the FUEL page shows the left fuel pump LO (amber) caution.
	On the ECAM upper DU:
	the caution L TK PUMP 1 + 2 LO PR is shown.
	On the panels 130VU and 131VU: the MASTER CAUT lights come on
	One chime sounds.

5.On the panel 40VU:	On the panel 40VU:
release (out) the L TK PUMPS 1 P/BSW.	the L TK PUMPS 1 P/BSW FAULT light goes off and the OFF light comes on.
	On the ECAM upper DU:
	the caution L TK PUMP 1 + 2 LO PR goes off.
	On the ECAM lower DU:
	the FUEL page shows the L TK PUMPS 1 symbol as an amber cross-line.
6.On the panel 121VU:
Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1QA, 11QA.	the L TK PUMPS 1 supply circuits are energized.
7.On the panel 40VU:	On the panel 40VU:
push (in) the L TK PUMPS 2 P/BSW).	the L TK PUMPS 2 P/BSW FAULT light may come on momentarily and then go off the L TK PUMPS 2 P/BSW OFF light goes off.
	On the ECAM lower DU:
	the L TK PUMPS 2 symbol changes from an amber cross-line to a green in-line.
8.On the panel 121VU:	On the panel 40VU:
Open, safety and tag this(these) circuit breaker(s): 7QA.	the L TK PUMPS 2 P/BSW FAULT light comes on.
	On the ECAM lower DU:
	the FUEL page shows, the left fuel pump LO (amber) caution.

	On the ECAM upper DU:
	the caution L TK PUMP 1 + 2 LO PRESS is shown.
9.On the panel 40VU:	On the panel 40VU:
release (out) the L TK PUMPS 2 P/BSW.	the L TK PUMPS 2 P/BSW FAULT light goes off and the OFF light comes on.
	On the ECAM upper DU:
	the caution L TK PUMP 2 LO PRESS goes off.
	On the ECAM lower DU:
	the FUEL page shows the L TK PUMPS 2 symbol as an amber cross-line.
10.On the panel 121VU:
Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 7QA.	the L TK PUMPS 2 supply circuits are energized.
11.On the panel 40VU:	On the panel 40VU:
push (in) the R TK PUMPS 1 P/BSW.	the R TK PUMPS 1 P/BSW FAULT light may come on momentarily and then go off the R TK PUMPS 1 P/BSW switch OFF light goes off.
	On the ECAM lower DU:
	the R TK PUMPS 1 symbol changes from an amber cross-line to a green in-line.
12.On the panel 121VU:	On the panel 40VU:
Open, safety and tag this(these) circuit breaker(s): 2QA, 12QA.	the R TK PUMPS 1 P/BSW FAULT light comes on.
	On the ECAM lower DU:
	the FUEL page shows the right fuel pump LO (amber) caution.
	On the ECAM upper DU:
	the caution R TK PUMP 1 + 2 LO PR is shown.
	On the panels 130VU and 131VU: the MASTER CAUT lights come on.
	One chime sounds.
13.On the panel 40VU:	On the panel 40VU:
release (out) the R TK PUMPS 1 P/BSW.	the R TK PUMPS 1 P/BSW FAULT light goes off and the OFF light comes on.
	On the ECAM upper DU:
	the caution R TK PUMP 1 + 2 LO PR goes off.
	On the ECAM lower DU:
	the FUEL page shows the R TK PUMPS 1 symbol as an amber cross-line.
14.On the panel 121VU:
Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 2QA, 12QA.	the R TK PUMPS 1 control circuits are energized.
15.On the panel 40VU:	On the panel 40VU:
push (in) the R TK PUMPS 2 P/BSW.	the R TK PUMPS 2 P/BSW FAULT light may come on momentarily and then go off the R TK PUMPS 2 P/BSW OFF light goes off.
	On the ECAM lower DU:
	the R TK PUMPS 2 symbol changes from an amber cross-line to a green in-line.
16.On the panel 121VU:	On the panel 40VU:
Open, safety and tag this(these) circuit breaker(s): 8QA.	the R TK PUMPS 2 P/BSW FAULT light comes on.
	On the ECAM lower DU:
	the FUEL page shows the right fuel pump LO (amber) caution.
	On the ECAM upper DU:
	the caution R TK PUMP 1 + 2 LO PRESS is shown.
17.On the panel 40VU:	On the panel 40VU:
release (out) the R TK PUMPS 2 P/BSW.	the R TK PUMPS 2 P/BSW FAULT light goes off and the OFF light comes on.
	On the ECAM upper DU:
	the caution R TK PUMP 2 LO PRESS goes off.
	On the ECAM lower DU:
	the FUEL page shows the R TK PUMPS 2 symbol as an amber cross-line.
18.On the panel 121VU:
Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 8QA.	the R TK PUMPS 2 supply circuits are energized.

5. Close-up
Subtask 28-21-00-860-052-A

A. Aircraft Configuration
(1) Do the EIS stop procedure (Ref. AMM TASK 31-60-00-860-002).
(2) Refuel, defuel or transfer fuel as necessary (Ref. AMM TASK 12-11-28-650-003), (Ref. AMM TASK 28-25-00-650-001) or (Ref. AMM TASK 28-25-00-869-001).
(3) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).

Subtask 28-21-00-942-072-A

B. 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 ground support and maintenance equipment, the special and standard tools and all other items.

[Rev.10 from 2021] 2026.04.01 05:46:41 UTC