Functional Test of the Fuel Recirculation Cooling System without Barfield Tester and without AIDS [IAE]

TASK 73-13-42-720-010-A
Functional Test of the Fuel Recirculation Cooling System without Barfield Tester and without AIDS

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 GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR 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	ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE
No specific	AR	ARINC READER
No specific	AR	SAFETY BARRIER(S)
No specific	AR	WARNING NOTICE(S)
98D27803500001	1	LOCKING TOOL ZERO POS

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR
FOR [122QM] (CHECK VALVE-FUEL RECIRCULATION, L)
471BL
FOR [123QM] (CHECK VALVE-FUEL RECIRCULATION, R)
482BR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 12-11-28-650-003-A	Pressure Refuel with Automatic Control
TASK 12-11-28-650-004-A	Pressure Refuel with Manual Control
TASK 27-50-00-866-008-A	Extension of the Flaps on the Ground
TASK 27-50-00-866-008-A-01	Extension of the Flaps/Slats on the Ground
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 71-00-00-710-012-B	Test No.3 : Idle Leak Check
TASK 71-13-00-010-010-A	Opening of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 71-13-00-410-010-A	Closing of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 73-11-48-200-010-A	General Check of the Power Plant Flexible Fuel Tubes

3. Job Set-up
Subtask 73-13-42-941-051-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) Make sure that the flap/slat control lever on panel 114VU is in the zero position (Ref. AMM TASK 27-50-00-866-008).
(2) Make sure that the 98D27803500001 LOCKING TOOL ZERO POS is on the slat/flap control lever.
(3) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(4) Put a WARNING NOTICE(S) on the throttle control lever to tell persons not to operate the reverse system.
(5) Put the SAFETY BARRIER(S) in position.

Subtask 73-13-42-865-053-A ** ON A/C NOT FOR ALL

B. Make sure that this(these) circuit breaker(s) is(are) closed:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	ENGINE/2/FADEC A/AND EIU 2	2KS2	A05
49VU	ENGINE/1/FADEC A/AND EIU 1	2KS1	A04
121VU	ENGINE/ENG2/FADEC B	4KS2	Q40
121VU	ENGINE/ENG1/FADEC B/AND EIU 1	4KS1	R41
121VU	FUEL/PUMPS/2/R CTL AND L IND	10QA	R29
121VU	FUEL/CTR TK/L&R XFR/CTL & IND	2QL	R26
121VU	FUEL/CTR TK/L&R XFR/CTL & IND	1QL	R25
121VU	FUEL/PUMPS/1/L CTL AND R IND	3QA	R23

Subtask 73-13-42-010-052-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Open the fan cowls (Ref. AMM TASK 71-13-00-010-010):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR.
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
(2) Put the ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE below the applicable position:
(a) FOR [122QM] (CHECK VALVE-FUEL RECIRCULATION, L)
below zone 520
(b) FOR [123QM] (CHECK VALVE-FUEL RECIRCULATION, R)
below zone 620.
(3) Remove the applicable access panels:
(a) FOR [122QM] (CHECK VALVE-FUEL RECIRCULATION, L)
remove 471BL
(b) FOR [123QM] (CHECK VALVE-FUEL RECIRCULATION, R)
remove 482BR.

4. Procedure
Subtask 73-13-42-720-050-C ** ON A/C NOT FOR ALL

A. Functional Test of the Fuel Recirculation Cooling System
(1) Make sure that the CBs (1QL) and (2QL) are closed.

NOTE: If the related DC BUS is not powered and the CBs not closed, the applicable FLSCU cannot supply and IDG/FRV open command via the EIU to the EEC.

(2) Do the EIS start procedure (ECAM only) (Ref. AMM TASK 31-60-00-860-001).
(3) On the ECAM control panel, push the FUEL P/BSW.
(4) Make sure that the FUEL page shows on the ECAM lower Display Unit (DU).
(5) Monitor the FUEL system display (lower ECAM DU) and make sure that:

all the fuel pumps are shown green in-line.
the L(R) inner wing temperature is less than 52.5 deg.C.
the L(R) outer cell temperature is less than 55 deg.C.
the L(R) wing tank contains more than 290kg (639.34 lb) of fuel to make sure that the IDG shutt off sensor 38QJ1(2) is wet. Refuel is necessary (Ref. AMM TASK 12-11-28-650-003) or (Ref. AMM TASK 12-11-28-650-004).
the cross feed valve is open.

(6) Do a minimum idle check (Ref. AMM TASK 71-00-00-710-012).
(a) Before you start the test, run the engine sufficiently to get an engine oil temperature of 30 deg.C (86.00 deg.F). You can read this value on the lower ECAM DU.

NOTE: Fuel recirculation is not possible if engine oil temperature is less than 30 deg.C (86.00 deg.F).

(b) On the upper ECAM DU make sure that the fuel flow is less than 4410 lbs/h and the fuel temperature is more than 5 deg.C (41.00 deg.F).

NOTE: Fuel recirculation is not possible if fuel flow is more than 4410 lbs/h and/or fuel temperature is less than 5 deg.C (41.00 deg.F).

(c) On panel 187VU (188VU), connect the ARINC READER to the plug 199VC (198VC) pins g and h.
(d) Decode the fuel return valve position as follows.
1 On the ARINC READER, read the label 245 bits 28 to 14.
2 Refer to the following table to find the valve of each significant bit (set to 1 bit).

-------------------------------------------------------------------------------

!Bit number! 28 ! 27 ! 26 ! 25 ! 24 ! 23! 22! 21! 20! 19! 18! 17! 16! 15! 14 !

-------------------------------------------------------------------------------

!value of ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !

!the bit ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !

!when set !16384!8192!4096!2048!1024!512!256!128! 64! 32! 16! 8 ! 4 ! 2 ! 1 !

!to 1 ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !

-------------------------------------------------------------------------------

3 Add all the significant bit values and calculate the position of the fuel return valve (in percent) with the following equation:

addition of the value of the significant bits

Valve position =______________________________________________ X 128

32768

Example: data transmitted on bits 14 to 28 of label 245

000111111010000

28-----------14

.Value of the significant bits = 2048+1024+512+256+128+64+16 = 4048

4048

.Therefore valve position= _____ x 128 = 15.8 percent.

32768

(e) Make sure that the calculated valve position is more than 10 percent.
(7) Monitor the flexible fuel tube connection for fuel leaks (Ref. AMM TASK 73-11-48-200-010).

5. Close-up
Subtask 73-13-42-410-051-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the fan cowls (Ref. AMM TASK 71-13-00-410-010)
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR.
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
(3) Install the applicable access panels:
(a) FOR [122QM] (CHECK VALVE-FUEL RECIRCULATION, L)
install 471BL
(b) FOR [123QM] (CHECK VALVE-FUEL RECIRCULATION, R)
install 482BR.

Subtask 73-13-42-942-052-A ** ON A/C NOT FOR ALL

B. Removal of Equipment
(1) Remove the SAFETY BARRIER(S).
(2) Remove the 98D27803500001 LOCKING TOOL ZERO POS from the flap/slat lever on panel 114VU.
(3) Remove the WARNING NOTICE(S).
(4) Remove the access platform(s).
(5) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

[Rev.10 from 2021] 2026.04.01 03:00:29 UTC