Operational Test of the Main Fuel-Pump System with Fuel Flow by Transfer

TASK 28-21-00-710-007-A
Operational Test of the Main Fuel-Pump System with Fuel Flow by 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.

ZONE: 211

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 4M (13 FT)-ADJUSTABLE
No specific	AR	SAFETY BARRIER(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
211	COCKPIT
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 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure

3. Job Set-up
Subtask 28-21-00-941-068-A

A. Safety Precautions
(1) Put the SAFETY BARRIER(S) in position.

Subtask 28-21-00-860-064-A

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.

(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 the fuel tanks contain a minimum of 500 l (130 USgal) of fuel. Refuel if necessary (Ref. AMM TASK 12-11-28-650-003).

Subtask 28-21-00-010-054-A ** ON A/C NOT FOR ALL

C. 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 28-21-00-010-054-B ** ON A/C NOT FOR ALL

C. Get Access
(1) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE 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.

Subtask 28-21-00-860-065-A

D. Preparation For Test
(1) On the panel 800VU:

put the MODE SELECT switch to the DEFUEL/XFR position.

(2) On the panel 40VU:

push (in) the X-FEED pushbutton switch (P/BSW).

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 28-21-00-710-058-A

A. Operational Test of the Main Fuel-Pump System with Fuel Flow by Transfer (Wing Tank Pumps)

ACTION	RESULT
1.On the panel 40VU:	On the panel 40VU:
make sure that all the fuel-tank pump P/BSW are in the off position.	all the fuel-tank pump P/BSW OFF lights are on
2.On the panel 800VU:
put the RIGHT REFUEL switch to the OPEN position.
3.On the panel 40VU:
push (in) the L TK PUMPS 1 and 2 P/BSW.	the L TK PUMPS 1 and 2 P/BSW OFF lights go off the L TK PUMPS 1 and 2 P/BSW FAULT lights come on momentarily and then go off.
	On the ECAM lower DU:
	the left tank pump 1 and 2 symbols go green in-line the FUEL page shows an increase of the fuel quantity in the right wing.
4.On the panel 40VU:	On the panel 40VU:
release (out) the L TK PUMPS 1 and 2 P/BSW.	the L TK PUMPS 1 and 2 P/BSW OFF lights come on.
	On the ECAM lower DU:
	the FUEL page symbols for the left tank pump 1 and 2 are off (amber cross-line).
5.On the panel 800VU:
put the RIGHT REFUEL VALVE switch to the NORM position
put the LEFT REFUEL VALVE switch to the OPEN position.
6.On the panel 40VU:	On the panel 40VU:
push (in) the R TK PUMPS 1 and 2 P/BSW	the R TK PUMPS 1 and 2 P/BSW OFF lights go off the R TK PUMPS 1 and 2 P/BSW FAULT lights come on momentarily and then go off.
	On the ECAM lower DU:
	the right tank pumps 1 and 2 symbols are on (green in-line). the FUEL page shows an increase of the fuel quantity in the left wing.
release (out) the R TK PUMPS 1 and 2 P/BSW.	On the panel 40VU:
	the R TK PUMPS 1 and 2 P/BSW OFF lights come on.
	On the ECAM lower DU:
	the FUEL page symbols for the right tank pumps 1 and 2 are off (amber cross-line).

Subtask 28-21-00-710-059-A ** ON A/C NOT FOR ALL

B. Operational Test of the Main Fuel-Pump System with Fuel Flow by Transfer (Center Tank Pumps)

ACTION	RESULT
1.On the panel 800VU:
put the RIGHT REFUEL VALVE switch to the OPEN position
make sure that the LEFT REFUEL VALVE switch is in OPEN position.
2.On the panel 40VU:	On the panel 40VU:
push (in) the CTR TK PUMP 1 and PUMP 2 P/BSW	the CTR TK PUMP 1 and PUMP 2 P/BSW OFF lights go off the CTR TK PUMP 1 and PUMP 2 P/BSW FAULT lights come on momentarily and then go off.
	On the ECAM lower DU:
	the FUEL page shows an increase in the fuel quantities, at the left and right wings.
release (out) the CTR TK PUMP 1 and PUMP 2 P/BSW.	On the panel 40VU:
	the CTR TK PUMP 1 and PUMP 2 P/BSW OFF lights come on.
	On the ECAM lower DU:
	the FUEL page symbols for the center-tank pump 1 and 2 are off (amber cross-line).
3.On the panel 800VU:
put the LEFT and RIGHT REFUEL VALVE switches in the NORM position put the CTR REFUEL VALVE switch in the OPEN position.
4.On the panel 40VU:	On the panel 40VU:
push (in) the L TK PUMPS 1 and 2 P/BSW	the L TK PUMPS 1 and 2 P/BSW OFF lights go off the L TK PUMPS 1 and 2 P/BSW FAULT lights come on momentarily and then go off.
	On the ECAM lower DU:
	the left tank pumps 1 and 2 symbols go green in-line the FUEL page shows an increase of fuel quantity in the center tank.
release (out) the L TK PUMPS 1 and 2 P/BSW	On the panel 40VU:
	the L TK PUMPS 1 and 2 P/BSW OFF lights come on.
	On the ECAM lower DU:
	the FUEL page symbols for the left tank pumps 1 and 2 are off (amber cross-line).
5.On the panel 40VU:	On the panel 40VU:
push (in) the R TK PUMPS 1 and 2 P/BSW	the R TK PUMPS 1 and 2 P/BSW OFF lights go off the R TK PUMPS 1 and 2 FAULT lights come on momentarily and then go off.
	On the ECAM lower DU:
	the right tank pumps 1 and 2 symbols go green in-line the FUEL page shows an increase of fuel quantity in the center tank.
release (out) the R TK PUMPS 1 and 2 P/BSW.	On the panel 40VU:
	the R TK PUMPS 1 and 2 P/BSW OFF lights come on
	On the ECAM lower DU:
	the FUEL page symbols for the right tank pumps 1 and 2 are off (amber cross-line).

5. Close-up
Subtask 28-21-00-860-063-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration

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.

(1) In the cockpit, on fuel panel 40VU, release the X-FEED pushbutton switch.
(2) On refuel/defuel control-panel 800VU:

Put the REFUEL VALVE switches to the NORM position
Put the MODE SELECT switch to the OFF position.

(3) Make sure that the work area is clean and clear of tools and other items.
(4) Close access door 192MB.
(5) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(6) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

Subtask 28-21-00-860-063-B ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration

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.

(1) In the cockpit, on fuel panel 40VU, release the X-FEED pushbutton switch.
(2) On refuel/defuel control-panel 800VU:

Put the REFUEL VALVE switches to the NORM position
Put the MODE SELECT switch to the OFF position.

(3) Make sure that the work area is clean and clear of tools and other items.
(4) Close access door 622KB.
(5) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(6) In the cockpit, on the ECAM CP, put the BRT switches to the OFF position.
(7) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

Subtask 28-21-00-942-070-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 access platform(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 06:17:22 UTC