Transfer Valve Indication - Intercell Transfer

TASK 28-40-00-040-004-A
Transfer Valve Indication - Intercell Transfer

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.

Task Summary

Access	Test	Specific Tools	Mhr	E/T	Nb Men
YES	YES	NO	0.3	0.3	1

1. Reason for the Job
MMEL 28-07-04-04A
WING TRANSFER VALVE INDICATION ON THE FUEL SD PAGE
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	SAFETY BARRIER(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
622KB
192MB

C. 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 28-00-00-910-001-A	Fuel Safety Procedures
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 28-40-00-941-060-A ** ON A/C NOT FOR ALL

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.

Subtask 28-40-00-010-056-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Open the access door 192MB.

NOTE: If operating in battery power, do not keep the door open longer than necessary because the battery can discharge.

Subtask 28-40-00-010-056-B ** ON A/C NOT FOR ALL

B. Get Access
(1) Open the access door 622KB.

NOTE: If operating in battery power, do not keep the door open longer than necessary because the battery can discharge.

Subtask 28-40-00-861-053-A ** ON A/C NOT FOR ALL

C. Energize the Electrical Circuits
(1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).

Subtask 28-40-00-650-052-A ** ON A/C NOT FOR ALL

D. Fuel Configuration
(1) Refuel, defuel or transfer fuel as necessary (Ref. AMM TASK 12-11-28-650-003), (Ref. AMM TASK 28-25-00-650-001), (Ref. AMM TASK 28-25-00-869-001) to get:

a minimum of 900 kg (1980 lbs) to a maximum of 4000 kg (8820 lbs) in the inner cell of each wing tank
maximum fuel in the outer cell of each wing tank.

Subtask 28-40-00-860-054-A ** ON A/C NOT FOR ALL

E. Aircraft Maintenance Configuration
(1) Do the EIS start procedure (ECAM only) (Ref. AMM TASK 31-60-00-860-001).
(2) On the panel 11VU, push (in) the FUEL P/BSW.
(3) On the panel 800VU:

set the MODE SELECT SWITCH to the REFUEL.

NOTE: It is necessary in this test to transfer fuel from the outer cell of each wing tank to its related inner cell.

Subtask 28-40-00-865-056-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	FUEL/XFR VALVE1/WING/R	2QP	A11
49VU	FUEL/XFR VALVE1/WING/L	1QP	A10
121VU	FUEL/XFR VALVE2/WING/R	4QP	M23
121VU	FUEL/XFR VALVE2/WING/L	3QP	M22

4. Procedure
Subtask 28-40-00-040-055-A ** ON A/C NOT FOR ALL

A. Transfer Valve Indication - Intercell Transfer
(1) Do this test:

ACTION	RESULT
1.Open, safety clip and tag C/B 3QP	On the ECAM DU: make sure that the right-wing outer-cell fuel content decreases and the right- wing inner-cell fuel content increases.
2.Remove the safety clip and the tag and close C/B 3QP	On the ECAM DU: make sure that the fuel transfer stops.
3.Open, safety clip and tag C/B 4QP	On the ECAM DU: make sure that the left-wing outer-cell fuel content decreases and the left- wing inner-cell fuel content increases.
4.Remove the safety clip and the tag and close C/B 4QP	On the ECAM DU: make sure that the fuel transfer stops.
5.Open, safety clip and tag C/B 2QP	On the ECAM DU: make sure that the left-wing outer-cell fuel content decreases and the left- wing inner-cell fuel content increases.
6.Remove the safety clip and the tag and close C/B 2QP	On the ECAM DU: make sure that the fuel transfer stops.
7.Open, safety clip and tag C/B 1QP	On the ECAM DU: make sure that the right-wing outer-cell fuel content decreases and the right- wing inner-cell fuel content increases.
8.Remove the safety clip and the tag and close C/B 1QP	On the ECAM DU: make sure that the fuel transfer stops.

5. Close-up
Subtask 28-40-00-860-055-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) On the panel 800VU:

set the MODE SELECT switch to the OFF position.

(2) Do the EIS stop procedure (Ref. AMM TASK 31-60-00-860-002).
(3) Make an applicable entry in the aircraft log.

Subtask 28-40-00-410-054-A ** ON A/C NOT FOR ALL

B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the access door 192MB.

Subtask 28-40-00-410-054-B ** ON A/C NOT FOR ALL

B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the access door 622KB.

Subtask 28-40-00-650-053-A ** ON A/C NOT FOR ALL

C. Fuel Configuration
(1) Refuel, defuel or transfer fuel as necessary (Ref. AMM TASK 12-11-28-650-003), (Ref. AMM TASK 28-25-00-650-001), (Ref. AMM TASK 28-25-00-869-001).

Subtask 28-40-00-862-053-A ** ON A/C NOT FOR ALL

D. De-energize the Electrical Circuits
(1) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).

Subtask 28-40-00-942-058-A ** ON A/C NOT FOR ALL

E. Removal of Equipment
(1) Remove the safety barriers.
(2) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

[Rev.10 from 2021] 2026.04.02 06:18:03 UTC