W DOC AIRBUS | AMM A320F

Operational Test of the Defuel System

TASK 28-25-00-710-002-A
Operational Test of the Defuel System

WARNING: OBEY THE FUEL SAFETY PROCEDURES.
WARNING: STOP THE FUEL TANKER 60 m (196.85 ft) FROM THE AIRCRAFT NOSE WHILE THE WEATHER RADAR OPERATES. DO NOT OPERATE THE FUEL TANKER/PUMP UNIT UNTIL YOU STOP THE OPERATION OF THE WEATHER RADAR.
WARNING: MAKE SURE THE AREA AROUND THE AIRCRAFT IS SAFE BEFORE YOU START THE REFUEL/DEFUEL PROCEDURE. IN THE SAFETY AREA, DO NOT:
  • SMOKE
  • MAKE SPARKS OR FIRE
  • USE ANY EQUIPMENT WHICH IS NOT APPROVED FOR REFUEL/DEFUEL PROCEDURES.
AIRCRAFT FUEL IS FLAMMABLE.
WARNING: DO NOT SPILL FUEL ON THE ENGINES OR THE BRAKES. IF YOU SPILL FUEL ON ENGINES OR BRAKES THAT ARE HOT, IT CAN CAUSE FIRES.
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.
WARNING: MAKE SURE THAT THE WHEEL CHOCKS ARE IN POSITION. MOVEMENT OF THE AIRCRAFT CAN BE DANGEROUS.
ZONE: 190
ZONE: 210
ZONE: 500
ZONE: 600
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
ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific
AR
ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE
No specific
AR
SAFETY BARRIER(S)
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
190
BELLY FAIR, AIR CONDITIONING & HYD COMPT
210
CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
500
LEFT WING
600
RIGHT WING
622KB
192MB
 C. Referenced Information
REFERENCE
DESIGNATION
TASK 12-11-28-650-001-A
General Refuel/Defuel Safety Procedures
TASK 12-11-28-650-002-A
Refuel/Defuel Safety Procedures for use in the Hangar
TASK 12-11-28-650-003-A
Pressure Refuel with Automatic Control
TASK 12-34-24-869-001-A
Aircraft Bonding and Grounding (Earthing) for the Refuel/Defuel or Oxygen Servicing Operations
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 31-60-00-860-002-A
EIS Stop Procedure
F Refuel/Defuel Control Panel ** ON A/C NOT FOR ALL
F Cockpit Fuel Control and Indications ** ON A/C NOT FOR ALL
F Refuel/Defuel Control Panel ** ON A/C NOT FOR ALL
F Refuel/Defuel Control Panel ** ON A/C NOT FOR ALL
F Refuel/Defuel Control Panel ** ON A/C NOT FOR ALL
F Refuel/Defuel Control Panel ** ON A/C NOT FOR ALL
F Refuel/Defuel Control Panel ** ON A/C NOT FOR ALL
F Refuel/Defuel Control Panel ** ON A/C NOT FOR ALL
F Cockpit Fuel Control and Indications ** ON A/C NOT FOR ALL
F Refuel/Defuel Coupling ** ON A/C NOT FOR ALL
F Refuel/Defuel Coupling ** ON A/C NOT FOR ALL
3. Job Set-up
Subtask 28-25-00-941-073-A
A. Safety Precautions
   (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) You must obey the refuel/defuel safety procedures (Ref. AMM TASK 12-11-28-650-001) (Ref. AMM TASK 12-11-28-650-002) when you do work on the refuel/defuel system.
   (3) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
Subtask 28-25-00-010-075-A ** ON A/C NOT FOR ALL
B. Get Access
F Refuel/Defuel Coupling ** ON A/C NOT FOR ALL
   (1) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE adjacent to refuel coupling 40QM.
   (2) Make sure that the fuel tanker is in the correct position.
WARNING: MAKE SURE THAT YOU BOND THE FUEL TANKER TO THE AIRCRAFT. IF YOU DO NOT, AN ELECTRICAL DISCHARGE CAN OCCUR WHICH CAN CAUSE AN EXPLOSION OR FIRE.
   (3) Obey the local regulations for grounding (earthing) the aircraft:
     (a) Ground (earth) the fuel tanker/pump unit and the aircraft correctly (Ref. AMM TASK 12-34-24-869-001).
   (4) Bond the fuel tanker/pump unit to the aircraft (Ref. AMM TASK 12-34-24-869-001).
   (5) Remove refuel coupling cap 41QM.
   (6) Make sure that the hose coupling of the fuel tanker/pump unit is clean.
WARNING: MAKE SURE THAT THE FUEL SUPPLY HOSE IS CORRECTLY CONNECTED TO THE COUPLING BEFORE YOU REFUEL/DEFUEL THE AIRCRAFT. DO NOT CONNECT THE FUEL SUPPLY HOSE IF THERE ARE SIGNS OF DAMAGE TO THE AIRCRAFT COUPLING LUGS OR SLOTS.
   (7) Connect the hose coupling of the fuel tanker/pump unit to the aircraft refuel/defuel coupling.
   (8) Make sure that there is sufficient space in the fuel tanker for the movement of fuel from the aircraft tanks.
Subtask 28-25-00-010-075-B ** ON A/C NOT FOR ALL
B. Get Access
F Refuel/Defuel Coupling ** ON A/C NOT FOR ALL
   (1) Put the ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE adjacent to the applicable refuel coupling 100QM (40QM).
   (2) Make sure that the aircraft and the fuel tanker/pump unit are grounded correctly (Ref. AMM TASK 12-34-24-869-001).
   (3) Remove the applicable refuel coupling cap 101QM (41QM).
   (4) Make sure that the hose-coupling of the fuel tanker/pump unit is clean.
   (5) Connect the hose-coupling of the fuel tanker/pump unit to the aircraft refuel/defuel coupling.
NOTE: Make sure there is sufficient space in the fuel tanker for the movement of fuel from the aircraft tanks.
Subtask 28-25-00-650-065-A
C. Fuel Configuration
   (1) If it is necessary, refuel the aircraft (Ref. AMM TASK 12-11-28-650-003).
   (2) Make sure that there is not more than 5500 kg (12125 lb) of fuel in each wing.
Subtask 28-25-00-860-055-A
D. Aircraft Maintenance Configuration
   (1) Set the fuel tanker/pump unit to the defuel mode.
   (2) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
   (3) Energize the Electronic Centralized Aircraft Monitoring (ECAM) system (Ref. AMM TASK 31-60-00-860-001).
   (4) On the ECAM Control Panel, push the FUEL system page pushbutton switch (P/BSW).
Subtask 28-25-00-010-057-A ** ON A/C NOT FOR ALL
E. Get Access
   (1) Open access door 192MB.
     (a) If operating in battery power, do not keep the door open longer than necessary because the battery can discharge.
Subtask 28-25-00-010-057-B ** ON A/C NOT FOR ALL
E. Get Access
   (1) Put the ACCESS PLATFORM 3M (10 FT) in position below zone 622.
   (2) 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.
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 28-25-00-710-050-A ** ON A/C NOT FOR ALL
A. Preparation for Test
   (1) Do this test:
ACTION
RESULT
On the panel 800VU:
  • Put the TEST switch to the LTS position and hold it there
On the panel 800VU:
  • The HI LVL lights and the DEFUEL XFR OPEN light are on.

On the preselector 5QT:
  • The PRESELECTED and ACTUAL displays show all eights
  • The CKPT and END lights come on.

On the indicator 6QT:
  • The FUEL QTY displays show all eights.
  • Release the TEST switch.
On the panel 800VU:
  • The HI LVL lights and the DEFUEL XFR OPEN light go back to their initial condition.

On the preselector 5QT:
  • The CKPT and END lights go off
  • The PRESELECTED and ACTUAL displays show the tank quantities.

On the indicator 6QT:
  • The FUEL QTY displays show the tank quantities.
Subtask 28-25-00-710-050-B ** ON A/C NOT FOR ALL
A. Preparation for Test
   (1) Do this test:
ACTION
RESULT
On panel 800VU:
  • Put the TEST switch to the LTS position and hold it there.
On panels 800VU and 801VU:
  • The HI LVL lights and the DEFUEL XFR OPEN light come on.

On the preselector 5QT:
  • The PRESELECTED and ACTUAL displays show all eights.
  • The CKPT and END lights come on.

On the indicator 6QT:
  • The FUEL QTY displays show all eights.
  • Release the TEST switch.
On panels 800VU and 801VU:
  • The HI LVL lights and the DEFUEL XFR OPEN light go off.

On the preselector 5QT:
  • The CKPT and END lights come on.
  • The PRESELECTED and ACTUAL displays show the tank quantities.

On the indicator 6QT:
  • The FUEL QTY displays show the tank quantities.
Subtask 28-25-00-710-050-C ** ON A/C NOT FOR ALL
A. Preparation for Test
   (1) Do this test:
NOTE: The ACT HI LVL light on panel 801VU will not come on during this test when the ACT is not installed.
ACTION
RESULT
On the panel 800VU:
  • put the TEST switch to the LTS position and hold it there
On the panel 800VU:
  • the HI LVL lights and the DEFUEL XFR OPEN light are on.

On the preselector 5QT:
  • the PRESELECTED and ACTUAL displays show all eights
  • the CKPT and END lights come on.

On the indicator 6QT:
  • the FUEL QTY displays show all eights.
  • release the TEST switch.
On the panel 800VU:
  • the HI LVL lights and the DEFUEL XFR OPEN light go back to their initial condition.

On the preselector 5QT:
  • the CKPT and END lights go off
  • the PRESELECTED and ACTUAL displays show the tank quantities.

On the indicator 6QT:
  • the FUEL QTY displays show the tank quantities.
Subtask 28-25-00-710-070-B ** ON A/C NOT FOR ALL
B. Preparation for Test
NOTE: The HI LVL lights of the ACTs that are not installed will not come on during this test.
   (1) Do this test:
ACTION
RESULT
On panel 800VU:
  • Put the TEST switch to the LTS position and hold it there.
On panels 800VU and 801VU:
  • The HI LVL lights and the DEFUEL XFR OPEN light come on.

On preselector 5QT:
  • The PRESELECTED and ACTUAL displays show all eights.
  • The CKPT and END lights come on.

On indicator 6QT:
  • The FUEL QTY displays show all eights.
  • Release the TEST switch.
On panels 800VU and 801VU:
  • The HI LVL lights and the DEFUEL XFR OPEN light go off.

On preselector 5QT:
  • The CKPT and END lights go off.
  • The PRESELECTED and ACTUAL displays show the tank quantities.

On indicator 6QT:
  • The FUEL QTY displays show the tank quantities.
Subtask 28-25-00-710-051-B ** ON A/C NOT FOR ALL
C. Operational Test of the Defuel System
   (1) Do the test that follows:
ACTION
RESULT
1.On refuel/defuel control-panel 800VU:
  • Make sure that the REFUEL VALVES switches are in the NORM and guarded position.
  • Put the MODE SELECT switch to the DEFUEL XFR position.
On refuel/defuel control-panel 800VU:
  • The OPEN light comes on.
2.On fuel control-panel 40VU:
  • Release (out) the MODE SEL pushbutton switch.
  • Push (in) the X FEED pushbutton switch.
On fuel control-panel 40VU:
  • The MAN light of the pushbutton switch comes on.
  • The pushbutton switch ON and the OPEN LIGHTS come on.
On the ECAM lower DU:
  • The crossfeed valve is shown open (in-line green).
3.On fuel control-panel 40VU:
  • Push (in) the L TK PUMPS 1 and 2 pushbutton switches.
On fuel control-panel 40VU:
  • The FAULT legends of the L TK PUMPS 1 and 2 pushbutton switches come on momentarily.
  • The OFF legends of the L TK PUMPS 1 and 2 pushbutton switches go off.
On the ECAM lower DU:
  • The LEFT pump display shows pumps on (in-line green).
  • The numbers on the LEFT and the FOB fuel quantity displays decrease.
On fuel quantity-indicator 6QT:
  • The numbers on the LEFT FUEL QTY display decrease.
On preselector 5QT:
  • The numbers on the ACTUAL display decrease.
4.On fuel control-panel 40VU:
  • Release (out) the L TK PUMPS 1 and 2 pushbutton switches.
On fuel control-panel 40VU:
  • The OFF legends of the L TK PUMPS 1 and 2 pushbutton switches come on.
On the ECAM lower DU:
  • The LEFT pump display shows off (cross-line amber).
  • The numbers on the LEFT and the FOB fuel quantity displays become stable.
On fuel quantity-indicator 6QT:
  • The numbers on the LEFT FUEL QTY display become stable.
On preselector 5QT:
  • The numbers on the ACTUAL display become stable.
5.On fuel control-panel 40VU:
  • Push (in) the R TK PUMPS 1 and 2 pushbutton switches.
On fuel control-panel 40VU:
  • The FAULT legends of the R TK PUMPS 1 and 2 pushbutton switches come on momentarily.
  • The OFF legends of the R TK PUMPS 1 and 2 pushbutton switches go off.
On the ECAM lower DU:
  • The RIGHT pump display shows pump on (in-line green).
  • The numbers on the RIGHT and the FOB fuel quantity displays decrease.
On fuel quantity-indicator 6QT:
  • The numbers on the RIGHT FUEL QTY display decrease.
On preselector 5QT:
  • The numbers on the ACTUAL display decrease.
6.On fuel control-panel 40VU:
  • Release (out) the R TK PUMPS 1 and 2 pushbutton switches.
On fuel control-panel 40VU:
  • The OFF legends of the R TK PUMPS 1 and 2 pushbutton switches come on.
On the ECAM lower DU:
  • The RIGHT pump display shows off (cross-line amber).
  • The numbers on the RIGHT and the FOB fuel quantity displays become stable.
On fuel quantity-indicator 6QT:
  • The numbers on the RIGHT FUEL QTY display become stable.
On preselector 5QT:
  • The numbers on the ACTUAL display become stable.
7.On fuel control-panel 40VU:
  • Push (in) the CTR TK PUMP 1 and 2 pushbutton switches.
On fuel control-panel 40VU:
  • The FAULT legends of the CTR TK PUMP 1 and 2 pushbutton switches come on momentarily.
  • The OFF legends CTR TK PUMP 1 and 2 pushbutton switches go off.
On the ECAM lower DU:
  • The CTR pump display shows pump on (in-line green).
  • The numbers on the CTR and the FOB fuel quantity displays decrease.
On fuel quantity-indicator 6QT:
  • The numbers on the CTR FUEL QTY display decrease.
On preselector 5QT:
  • The numbers on the ACTUAL display decrease.
8.On fuel control-panel 40VU:
  • Release (out) the CTR TK PUMP 1 and 2 pushbutton switches.
On fuel control-panel 40VU:
  • The OFF legends CTR TK PUMP 1 and 2 pushbutton switches come on.
On the ECAM lower DU:
  • The CTR pump display shows off (cross-line amber).
  • The numbers on the CTR and the FOB fuel quantity displays become stable.
On fuel quantity-indicator 6QT:
  • The numbers on the CTR FUEL QTY display become stable.
On preselector 5QT:
  • The numbers on the ACTUAL display become stable.
CAUTION: BEFORE YOU CLOSE THE CROSSFEED VALVE, MAKE SURE THAT THE FUEL PUMP(S) IS(ARE) OFF. THIS WILL PREVENT DAMAGE TO THE CROSSFEED VALVE.
9.On fuel control-panel 40VU:
  • Push (in) the MODE SEL pushbutton switch.
  • Release (out) the X FEED pushbutton switch.
On fuel control-panel 40VU:
  • The MAN light of the pushbutton switch goes off.
  • The pushbutton switch ON and the OPEN lights go off.
On the ECAM lower DU:
  • The crossfeed valve shows closed (cross-line).
10.On refuel/defuel control-panel 800VU:
  • Put the MODE SELECT switch to the OFF and guarded position.
On refuel/defuel control-panel 800VU:
  • The DEFUEL XFR OPEN light goes off.
Subtask 28-25-00-710-051-E ** ON A/C NOT FOR ALL
C. Operational Test of the Defuel System
NOTE: After you complete the maintenance procedure that follows:
  • There is a risk of surge tank overflow if the MODE SEL (4QL) pushbutton switch stays in the MAN mode.
ACTION
RESULT
1.On refuel/defuel control-panel 800VU:
  • Make sure that the REFUEL VALVES switches are in the NORM and guarded position.
  • Set the MODE SELECT switch to the DEFUEL XFR position.
On refuel/defuel control-panel 800VU:
  • The OPEN light comes on.
2.On fuel control-panel 40VU:
  • Push (in) the X FEED pushbutton switch.
On fuel control-panel 40VU:
  • The ON and the OPEN legends of the pushbutton switch come on.
On the ECAM lower Display Unit (DU):
  • The X FEED valve display shows that the valve is open (in-line green).
3.On fuel control-panel 40VU:
  • Push (in) the L TK PUMPS 1 and 2 pushbutton switches.
On fuel control-panel 40VU:
  • The FAULT legends of the L TK PUMPS 1 and 2 pushbutton switches come on momentarily.
  • The OFF legends of the L TK PUMPS 1 and 2 pushbutton switches go off.
On the ECAM lower DU:
  • The LEFT PUMP display shows that the pumps are on (in-line green).
  • The numbers on the LEFT PUMP display and the Fuel On Board (FOB) fuel-quantity display decrease.
On fuel quantity-indicator 6QT:
  • The numbers on the LEFT FUEL QTY display decrease.
On preselector 5QT:
  • The numbers on the ACTUAL display decrease.
4.On fuel control-panel 40VU:
  • Release (out) the L TK PUMPS 1 and 2 pushbutton switches.
On fuel control-panel 40VU:
  • The OFF legends of the L TK PUMPS 1 and 2 pushbutton switches come on.
On the ECAM lower DU:
  • The LEFT PUMP display shows thst the pumps are OFF (cross-line amber).
  • The numbers on the LEFT PUMP display and the FOB fuel-quantity display become stable.
On fuel quantity-indicator 6QT:
  • The numbers on the LEFT FUEL QTY display become stable.
On preselector 5QT:
  • The numbers on the ACTUAL display become stable.
5.On fuel control-panel 40VU:
  • Push (in) the R TK PUMPS 1 and 2 pushbutton switches.
On fuel control-panel 40VU:
  • The FAULT legends of the R TK PUMPS 1 and 2 pushbutton switches come on momentarily.
  • The OFF legends of the R TK PUMPS 1 and 2 pushbutton switches go off.
On the ECAM lower DU:
  • The RIGHT PUMP display shows that the pumps are on (in-line green).
  • The numbers on the RIGHT PUMP display and the FOB fuel-quantity display decrease.
On fuel quantity-indicator 6QT:
  • The numbers on the RIGHT FUEL QTY display decrease.
On preselector 5QT:
  • The numbers on the ACTUAL display decrease.
6.On fuel control-panel 40VU:
  • Release (out) the R TK PUMPS 1 and 2 pushbutton switches.
On fuel control-panel 40VU:
  • The OFF legends of the R TK PUMPS 1 and 2 pushbutton switches come on.
On the ECAM lower DU:
  • The RIGHT PUMP display shows that the pumps are off (cross-line amber).
  • The numbers on the RIGHT PUMP display and the FOB fuel-quantity display become stable.
On fuel quantity-indicator 6QT:
  • The numbers on the RIGHT FUEL QTY display become stable.
On preselector 5QT:
  • The numbers on the ACTUAL display become stable.
7.On fuel control-panel 40VU:
  • Push (in) the L TK PUMPS 1 and 2 pushbutton switches.
  • Push (in) the CTR TK L XFR pushbutton switch.
On fuel control-panel 40VU:
  • The FAULT legends of the L TK PUMP 1 and 2 pushbutton switches come on momentarily.
  • The OFF legends of the L TK PUMP 1 and 2 pushbutton switches go off.
  • The OFF legend of the CTR TK L XFR pushbutton switch goes off.
On the ECAM lower DU:
  • The LEFT PUMP display shows that the pumps are on (in-line green).
  • The CTR TK L XFR PUMP display shows that the pump is on (in-line green).
  • The numbers on the CTR PUMP display, LEFT PUMP display and the FOB fuel-quantity display decrease.
NOTE: The numbers on the CTR fuel-quantity display decrease, if one full and one underfull sensor is dry.
On fuel quantity-indicator 6QT:
  • The numbers on the CTR PUMP display and LEFT FUEL QTY display decrease.
On preselector 5QT:
  • The numbers on the ACTUAL display decrease.
8.On fuel control-panel 40VU:
  • Release (out) the L TK PUMPS 1 and 2 pushbutton switches
  • Release (out) the CTR TK L XFR pushbutton switch.
On fuel control-panel 40VU:
  • The OFF legends of the L TK PUMPS 1 and 2 pushbutton switches come on.
  • The OFF legend of the CTR TK L XFR pushbutton switch comes on.
On the ECAM lower DU:
  • The LEFT PUMP display shows that the pumps are off (cross-line amber).
  • The CTR TK L XFR PUMP display shows that the pump is off (cross-line amber).
  • The numbers on the CTR PUMP display, LEFT PUMP display and the FOB fuel-quantity display become stable.
On fuel quantity-indicator 6QT:
  • The numbers on the CTR PUMP display and LEFT FUEL QTY display become stable.
On preselector 5QT:
  • The numbers on the ACTUAL display become stable.
9.On fuel control-panel 40VU:
  • Push (in) the R TK PUMPS 1 and 2 pushbutton switch.
  • Push (in) the CTR TK R XFR pushbutton switch.
On fuel control-panel 40VU:
  • The FAULT legends of the R TK PUMP 1 and 2 pushbutton switches come on momentarily.
  • The OFF legends of the R TK PUMP 1 and 2 pushbutton switches OFF legends go off.
  • The OFF legend of the CTR TK R XFR pushbutton switch goes off.
On the ECAM lower DU:
  • The RIGHT PUMP display shows that the pumps on (in-line green).
  • The CTR TK R XFR PUMP display shows that the pump is on (in-line green).
  • The numbers on the CTR PUMP display, RIGHT pump display and the FOB fuel-quantity display decrease.
NOTE: The numbers on the CTR fuel-quantity display decrease. if one full and one underfull sensor is dry.
On fuel quantity-indicator 6QT:
  • The numbers on the CTR PUMP display and RIGHT FUEL QTY display decrease.
On preselector 5QT:
  • The numbers on the ACTUAL display decrease.
10.On fuel control-panel 40VU:
  • Release (out) the R TK PUMPS 1 and 2 pushbutton switches.
  • Release (out) the CTR TK R XFR pushbutton switch.
On fuel control-panel 40VU:
  • The OFF legends of the R TK PUMPS 1 and 2 pushbutton switches come on.
  • The OFF legend of the CTR TK R XFR pushbutton switch comes on.
On the ECAM lower DU:
  • The RIGHT PUMP display shows that the pumps are off (cross-line amber).
  • The CTR TK R XFR PUMP display shows that the pump is off (cross-line amber).
  • The numbers on the CTR PUMP display, RIGHT pump display and the FOB fuel-quantity display become stable.
On fuel quantity-indicator 6QT:
  • The numbers on the CTR PUMP display and RIGHT FUEL QTY display become stable.
On preselector 5QT:
  • The numbers on the ACTUAL display become stable.
CAUTION: BEFORE YOU CLOSE THE CROSSFEED VALVE, MAKE SURE THAT THE FUEL PUMP(S) IS(ARE) OFF. THIS WILL PREVENT DAMAGE TO THE CROSSFEED VALVE.
11.On fuel control-panel 40VU:
  • Release (out) the X FEED pushbutton switch.
On fuel control-panel 40VU:
  • The ON and the OPEN legends of the pushbutton switch goes off.
On the ECAM lower DU:
  • The X FEED valve display shows that the valve is closed (cross-line green).
12.On refuel/defuel control-panel 800VU:
  • Set the MODE SELECT switch to the OFF and guarded position.
On refuel/defuel control-panel 800VU:
  • The OPEN light of the DEFUEL XFR goes off.
Subtask 28-25-00-710-071-B ** ON A/C NOT FOR ALL
D. Operational Test of the Defuel System
   (1) Do the test that follows:
ACTION
RESULT
1.On refuel/defuel control-panels 800VU and 801VU:
  • Make sure that the REFUEL VALVES switches are in the NORM and guarded position.
  • Put the MODE SELECT switch to the DEFUEL XFR position.
On refuel/defuel control-panel 800VU:
  • The OPEN light comes on.
2.On fuel control-panel 40VU:
  • Push (in) the X FEED pushbutton switch.
On fuel control-panel 40VU:
  • The pushbutton switch ON and the OPEN legends come on.
On the ECAM lower DU:
  • The crossfeed valve is shown open (in-line green).
3.On fuel control-panel 40VU:
  • Push (in) the L TK PUMPS 1 and 2 pushbutton switches.
On fuel control-panel 40VU:
  • The FAULT legends of the L TK PUMPS 1 and 2 pushbutton switches come on momentarily.
  • The OFF legends of the L TK PUMPS 1 and 2 pushbutton switches go off.
On the ECAM lower DU:
  • The LEFT pump display shows pumps on (in-line green).
  • The numbers on the LEFT and the FOB fuel quantity displays decrease.
On fuel quantity-indicator 6QT:
  • The numbers on the LEFT FUEL QTY display decrease.
On preselector 5QT:
  • The numbers on the ACTUAL display decrease.
4.On fuel control-panel 40VU:
  • Release (out) the L TK PUMPS 1 and 2 pushbutton switches.
On fuel control-panel 40VU:
  • The OFF legends of the L TK PUMPS 1 and 2 pushbutton switches come on.
On the ECAM lower DU:
  • The LEFT pump display shows off (cross-line amber).
  • The numbers on the LEFT and the FOB fuel quantity displays become stable.
On fuel quantity-indicator 6QT:
  • The numbers on the LEFT FUEL QTY display become stable.
On preselector 5QT:
  • The numbers on the ACTUAL display become stable.
5.On fuel control-panel 40VU:
  • Push (in) the R TK PUMPS 1 and 2 pushbutton switches.
On fuel control-panel 40VU:
  • The FAULT legends of the R TK PUMPS 1 and 2 pushbutton switches come on momentarily.
  • The OFF legends of the R TK PUMPS 1 and 2 pushbutton switches go off.
On the ECAM lower DU:
  • The RIGHT pump display shows pump on (in-line green).
  • The numbers on the RIGHT and the FOB fuel quantity displays decrease.
On the fuel quantity-indicator 6QT:
  • The numbers on the RIGHT FUEL QTY display decrease.
On preselector 5QT:
  • The numbers on the ACTUAL display decrease.
6.On fuel control-panel 40VU:
  • Release (out) the R TK PUMPS 1 and 2 pushbutton switches.
On fuel control-panel 40VU:
  • The OFF legends of the R TK PUMPS 1 and 2 pushbutton switches come on.
On the ECAM lower DU:
  • The RIGHT pump display shows off (cross-line amber).
  • The numbers on the RIGHT and the FOB fuel quantity displays become stable.
On fuel quantity-indicator 6QT:
  • The numbers on the RIGHT FUEL QTY display become stable.
On preselector 5QT:
  • The numbers on the ACTUAL display become stable.
7.On fuel control-panel 40VU:
  • Release (out) the MODE SEL pushbutton switch.
On fuel control-panel 40VU:
  • The MAN light of the MODE SEL pushbutton switch comes on.
NOTE: You must defuel the center tank with the center tank pumps in manual control.

8.On fuel control-panel 40VU:
  • Push (in) the CTR TK L XFR and R XFR pushbutton switches.
On fuel control-panel 40VU:
  • The FAULT legends of the CTR TK L XFR and R XFR pushbutton switches come on momentarily.
  • The OFF legends of the CTR TK L XFR and R XFR pushbutton switches go off.
On the ECAM lower DU:
  • The CTR pump display shows pump on (in-line green).
  • The numbers on the CTR and the FOB fuel quantity displays decrease.
On fuel quantity-indicator 6QT:
  • The numbers on the CTR FUEL QTY display decrease.
On preselector 5QT:
  • The numbers on the ACTUAL display decrease.
9.On fuel control-panel 40VU:
  • Release (out) the CTR TK L XFR and R XFR pushbutton switches.
On fuel control-panel 40VU:
  • The OFF legends of the CTR TK L XFR and R XFR pushbutton switches come on.
On the ECAM lower DU:
  • The CTR pump display shows off (cross-line amber).
  • The numbers on the CTR and the FOB fuel quantity displays become stable.
On fuel quantity-indicator 6QT:
  • The numbers on the CTR FUEL QTY display become stable.
On preselector 5QT:
  • The numbers on the ACTUAL display become stable.
CAUTION: BEFORE YOU CLOSE THE CROSSFEED VALVE, MAKE SURE THAT THE FUEL PUMP(S) IS(ARE) OFF. THIS WILL PREVENT DAMAGE TO THE CROSSFEED VALVE.
10.On fuel control-panel 40VU:
  • Push (in) the MODE SEL pushbutton switch.
  • Release (out) the X FEED pushbutton switch.
On fuel control-panel 40VU:
  • The MAN light of the pushbutton switch goes off.
  • The pushbutton switch ON and the OPEN lights go off.
On the ECAM lower DU:
  • The crossfeed valve shows closed (cross-line).
11.On refuel/defuel control-panel 800VU:
  • Put the MODE SELECT switch to the OFF and guarded position.
On refuel/defuel control-panel 800VU:
  • The OPEN light of the DEFUEL XFR goes off.
12.If the ACT(s) is(are) installed, on ACT control-panel 28VU:
  • Push (in) the ACT XFR MODE SEL pushbutton switch.
On ACT control-panel 28VU:
  • The MAN light of the pushbutton switch comes on.
13.On ACT control-panel 28VU:
  • Set the ACT XFR rotary selector switch to the applicable ACT.
  • Set the ACT XFR rotary selector switch to the subsequent ACT when the selected ACT is empty.
On the ECAM lower DU:
  • The green ACT transfer arrow comes on.
  • The center tank fuel quantity increases.
On fuel quantity-indicator 6QT:
  • Total ACT fuel quantity decreases.
14.On ACT control-panel 28VU:
  • Release (out) the ACT XFR MODE SEL pushbutton switch.
  • Set the ACT XFR rotary selector switch to OFF.
On ACT control-panel 28VU:
  • The MAN light of the pushbutton switch goes off.
On the ECAM lower DU:
  • The green ACT transfer arrow goes off.
On fuel quantity-indicator 6QT:
  • The numbers on the ACT FUEL QTY display become stable.
  • The numbers on the TOTAL ACT FUEL QTY display become stable.
Subtask 28-25-00-710-080-A ** ON A/C NOT FOR ALL
E. Operational Test of the Defuel System
   (1) Do the test that follows:
ACTION
RESULT
1.On refuel/defuel control-panel 800VU and 801VU:
  • Make sure that the REFUEL VALVES switches are in the NORM and guarded position.
  • Put the MODE SELECT switch to the DEFUEL XFR position.
On refuel/defuel control-panel 800VU:
  • The OPEN light comes on.
2.On fuel control-panel 40VU:
  • Push (in) the X FEED pushbutton switch.
On fuel control-panel 40VU:
  • The pushbutton switch ON and OPEN lights come on.
On the ECAM lower DU:
  • The X FEED valve display shows open (in-line).
3.On fuel control-panel 40VU:
  • Push (in) the L TK PUMPS 1 and 2 pushbutton switches.
On fuel control-panel 40VU:
  • The FAULT legends of the L TK PUMPS 1 and 2 pushbutton switches come on momentarily.
  • The OFF legends of the L TK PUMPS 1 and 2 pushbutton switches go off.
On the ECAM lower DU:
  • The LEFT pump display shows pumps on (in-line green).
  • The numbers on the LEFT and the FOB fuel quantity displays decrease.
On fuel quantity-indicator 6QT:
  • The numbers on the LEFT FUEL QTY display decrease.
On preselector 5QT:
  • The numbers on the ACTUAL display decrease.
4.On fuel control-panel 40VU:
  • Release (out) the L TK PUMPS 1 and 2 pushbutton switches.
On fuel control-panel 40VU:
  • The OFF legends of the L TK PUMPS 1 and 2 pushbutton switches come on.
On the ECAM lower DU:
  • The LEFT pump display shows off (cross-line amber).
  • The numbers on the LEFT and the FOB fuel quantity displays become stable.
On fuel quantity-indicator 6QT:
  • The numbers on the LEFT FUEL QTY display become stable.
On preselector 5QT:
  • The numbers on the ACTUAL display become stable.
5.On fuel control-panel 40VU:
  • Push (in) the R TK PUMPS 1 and 2 pushbutton switches.
On fuel control-panel 40VU:
  • The FAULT legends of the R TK PUMPS 1 and 2 pushbutton switches come on momentarily.
  • The OFF legends of the R TK PUMPS 1 and 2 pushbutton switches go off.
On the ECAM lower DU:
  • The RIGHT pump display shows pumps on (in-line green)
  • The numbers on the RIGHT and the FOB fuel quantity displays decrease.
6.On fuel control-panel 40VU:
  • Release (out) the R TK PUMPS 1 and 2 pushbutton switches.
On fuel control-panel 40VU:
  • The OFF legends R TK PUMPS 1 and 2 pushbutton switches come on.
On the ECAM lower DU:
  • The RIGHT pump display shows off (cross-line amber).
  • The numbers on the RIGHT and the FOB fuel quantity displays become stable.
On fuel quantity-indicator 6QT:
  • The numbers on the RIGHT FUEL QTY display become stable.
On preselector 5QT:
  • The numbers on the ACTUAL display become stable.
7.On fuel control-panel 40VU:
  • Push (in) the L TK PUMPS 1 and 2 pushbutton switches.
  • Push (in) the CTR TK L XFR pushbutton switch.
On fuel control-panel 40VU:
  • The FAULT legends of the L TK PUMP 1 and 2 pushbutton switches come on momentarily.
  • The OFF legends of the L TK PUMP 1 and 2 pushbutton switches go off.
  • The OFF legend of the CTR TK L XFR pushbutton switch goes off.
On the ECAM lower DU:
  • The LEFT pump display shows pumps on (in-line green).
  • The CTR TK L XFR pump display shows pump on (in-line green).
  • The numbers on the CTR, LEFT and the FOB fuel quantity displays decrease.
NOTE: The CTR fuel quantity display decreases if one full and one underfull sensor is dry.
On fuel quantity-indicator 6QT:
  • The numbers on the CTR and LEFT FUEL QTY displays decrease.
On preselector 5QT:
  • The numbers on the ACTUAL display decrease.
8.On fuel control-panel 40VU:
  • Release (out) the L TK PUMPS 1 and 2 pushbutton switches.
  • Release (out) the CTR TK L XFR pushbutton switch.
On fuel control-panel 40VU:
  • The OFF legends of the L TK PUMPS 1 and 2 pushbutton switches come on.
  • The OFF legend of the CTR TK L XFR pushbutton switch comes on.
On the ECAM lower DU:
  • The LEFT pump display shows off (cross-line amber).
  • The CTR TK L XFR pump display shows off (cross-line amber).
  • The numbers on the CTR, LEFT and the FOB fuel quantity displays become stable.
On fuel quantity-indicator 6QT:
  • The numbers on the CTR and LEFT FUEL QTY displays become stable.
On preselector 5QT:
  • The numbers on the ACTUAL display become stable.
9.On fuel control-panel 40VU:
  • Push (in) the R TK PUMPS 1 and 2 pushbutton switches.
  • Push (in) the CTR TK R XFR pushbutton switch.
On fuel control-panel 40VU:
  • The FAULT legends of the R TK PUMP 1 and 2 pushbutton switches come on momentarily
  • The OFF legends of the R TK PUMP 1 and 2 pushbutton switches go off
  • The OFF legend of the CTR TK R XFR pushbutton switch goes off.
On the ECAM lower DU:
  • The RIGHT pump display shows pumps on (in-line green).
  • The CTR TK R XFR pump display shows pump on (in-line green).
  • The numbers on the CTR, RIGHT and the FOB fuel quantity displays decrease.
NOTE: The CTR fuel quantity display decreases if one full and one underfull sensor is dry.
On fuel quantity-indicator 6QT:
  • The numbers on the CTR and RIGHT FUEL QTY displays decrease.
On preselector 5QT:
  • The numbers on the ACTUAL display decrease.
10.On fuel control-panel 40VU:
  • Release (out) the R TK PUMPS 1 and 2 pushbutton switches.
  • Release (out) the CTR TK R XFR pushbutton switch.
On fuel control-panel 40VU:
  • The OFF legends of the R TK PUMPS 1 and 2 pushbutton switch come on.
  • The OFF legend of the CTR TK R XFR pushbutton switch comes on.
On the ECAM lower DU:
  • The RIGHT pump display shows off (cross-line amber).
  • The CTR TK R XFR pump display shows off (cross-line amber).
  • The numbers on the CTR, RIGHT and the FOB fuel quantity displays become stable.
On fuel quantity-indicator 6QT:
  • The numbers on the CTR and RIGHT FUEL QTY displays become stable.
On preselector 5QT:
  • The numbers on the ACTUAL display become stable.
CAUTION: BEFORE YOU CLOSE THE CROSSFEED VALVE, MAKE SURE THAT THE FUEL PUMP(S) IS(ARE) OFF. THIS WILL PREVENT DAMAGE TO THE CROSSFEED VALVE.
11.On fuel control-panel 40VU:
  • Release (out) the X-FEED pushbutton switch.
On fuel control-panel 40VU:
  • The pushbutton switch ON and the OPEN lights go off.
On the ECAM lower DU:
  • The crossfeed valve shows closed (cross-line).
12.On refuel/defuel control-panel 800VU:
  • Put the MODE SELECT switch to the OFF and guarded position.
On refuel/defuel control-panel 800VU:
  • The OPEN light of the DEFUEL XFR goes off.
13.On fuel control-panel 40VU:
  • Push (in) the ACT FWD pushbutton switch.
On fuel control-panel 40VU:
  • The FWD legend comes on.
On the ECAM lower DU:
  • The ACT fuel quantity decreases and the center tank fuel quantity increases.
14.On refuel/defuel control-panel 801VU:
  • Put the FQI SELECT CTR/ACT switch in the ACT1 position.
On fuel quantity-indicator 6QT:
  • The CTR indication decreases.
15.On refuel/defuel control-panel 801VU:
  • Put the FQI SELECT CTR/ACT switch in the ACT2 position.
On fuel quantity-indicator 6QT:
  • The CTR indication decreases.
16.On fuel control-panel 801VU:
  • Put the FQI SELECT CTR/ACT switch in the CTR position.
On fuel quantity-indicator 6QT:
  • The CTR indication increases.
17.On fuel control-panel 40VU:
  • Release (out) the ACT FWD pushbutton switch.
On fuel control-panel 40VU:
  • The FWD legend goes off.
On the ECAM lower DU:
  • The fuel quantities become stable.
5. Close-up
Subtask 28-25-00-860-056-A
A. Aircraft Maintenance 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).
Subtask 28-25-00-420-052-A ** ON A/C NOT FOR ALL
B. Install the Refuel Coupling Cap
CAUTION: MAKE SURE THAT THE HANDLE OF THE REFUEL COUPLING CAP POINTS AFT WHEN THE CAP IS CLOSED AND LOCKED.
   (1) Disconnect the hose coupling of the fuel tanker/pump unit at the aircraft refuel/defuel coupling.
   (2) Install the refuel coupling cap on the refuel/defuel coupling.
Subtask 28-25-00-420-052-B ** ON A/C NOT FOR ALL
B. Install the Refuel Coupling Cap
CAUTION: MAKE SURE THAT THE HANDLE OF THE REFUEL COUPLING CAP POINTS AFT WHEN THE CAP IS CLOSED AND LOCKED.
   (1) Disconnect the hose coupling of the fuel tanker/pump unit at aircraft refuel/defuel coupling 40QM.
   (2) Install refuel coupling cap on refuel/defuel coupling 41QM.
Subtask 28-25-00-410-059-A ** ON A/C NOT FOR ALL
C. Close Access
   (1) Disconnect the ground cable of the fuel tanker/pump unit from the aircraft.
   (2) Make sure that the work area is clean and clear of tools and other items.
   (3) Close access door 192MB.
Subtask 28-25-00-410-059-B ** ON A/C NOT FOR ALL
C. Close Access
   (1) Disconnect the ground cable of the fuel tanker/pump unit from the aircraft.
   (2) Make sure that the work area is clean and clear of tools and other items.
   (3) Close the access door 622KB.
Subtask 28-25-00-942-058-A
D. Removal of Equipment
   (1) If installed, remove the safety barriers.
   (2) Remove the access platform(s).
   (3) Remove the WARNING NOTICE(S).
   (4) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
[Rev.10 from 2021] 2026.04.02 07:01:20 UTC
"WTRUIB" 2025