Functional (BITE) Test of the Intercell Transfer Valves

TASK 28-15-00-740-002-A
Functional (BITE) Test of the Intercell Transfer 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.

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	SAFETY BARRIER(S)

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 28-00-00-910-001-A	Fuel Safety Procedures
TASK 28-25-00-650-001-A	Pressure Defuel
TASK 28-25-00-869-001-A	Fuel Transfer
TASK 31-32-00-860-001-A	Procedure to Get Access to the SYSTEM REPORT/TEST Menu Page
TASK 31-60-00-860-002-A	EIS Stop Procedure

3. Job Set-up
Subtask 28-15-00-941-055-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) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.

Subtask 28-15-00-860-056-A ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
(1) Refuel each of the wing tanks to a minimum of 1500 kg (3306.9 lb) (Ref. AMM TASK 12-11-28-650-003). Make sure that the wing tank outer cells are full of fuel.

4. Procedure
Subtask 28-15-00-740-050-C ** ON A/C NOT FOR ALL

A. BITE Test
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) Reset the FQIC as follows:
(a) On the panels 49VU and 121VU:

open the circuit breakers 1QT and 2QT for a minimum of 10 seconds.

(b) On the panels 49VU and 121VU:

close the circuit breakers 1QT and 2QT.

(3) Do the test that follows:

NOTE: When you push (in) the line key adjacent to FUEL> indication, the Multipurpose Control and Display Unit (MCDU) can initially show CH1 or CH2. In this case, the test starts with CH1. CH2 will only show first if CH1 has a failure.

NOTE: The subsequent results are only available after one minute from the time that you energized the Fuel Quantity Indication Computer (FQIC).

ACTION	RESULT
1.On the MCDU, get access to the FUEL page (Ref. AMM TASK 31-32-00-860-001).	The MCDU shows the first CH1 FUEL menu.
2.Push (in) the NEXT PAGE button on the MCDU.	The MCDU shows the second CH1 FUEL menu.
3.Push (in) the line key adjacent to <FLSS STATUS indication.	For CH1, the MCDU shows: NO FAULTS
4.Push (in) the line key adjacent to <RETURN indication.	The MCDU shows the second CH1 FUEL menu.
5.Push (in) the NEXT PAGE button on the MCDU.	The MCDU shows the first CH1 FUEL menu.
6.Push (in) the line key <RETURN frequently until the CFDS menu page is shown.

5. Close-up
Subtask 28-15-00-860-057-A ** ON A/C NOT FOR ALL

A. Aircraft 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) or (Ref. AMM TASK 28-25-00-869-001).
(2) On the refuel/defuel control panel 800VU:

make sure that the MODE SEL switch is in the OFF and guarded position.

(3) Close the refuel/defuel control panel door.
(4) Do the EIS stop procedure (Ref. AMM TASK 31-60-00-860-002).
(5) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

Subtask 28-15-00-942-053-A ** ON A/C NOT FOR ALL

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] 2026.04.02 06:17:14 UTC