Installation of the Engine Air-Intake Anti-ice Valve

TASK 30-21-51-400-042-A
Installation of the Engine Air-Intake Anti-ice Valve

ZONE: 410
FIN: 4000DN ** ON A/C NOT FOR ALL

1. Reason for the Job

NOTE: The installation of the air intake anti-ice valve is the same for the engine 1 and the engine 2.

2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	HAMMER - FIBER
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 85 and 70 lbf.in (0.96 and 0.79 m.daN )
No specific	Torque wrench: range to between 160 and 150 lbf.in (1.81 and 1.70 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP3010)	dry developer
(Material No.CP8004)	lockwire 0.6 mm (0.0236 in.) dia
(Material No.05RAC1)	Adhesive Film Tape-- Aluminium Foil - Sound damping -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
410	ENG 1 PYLON BOX AND FORWARD FAIRING
FOR [1000EM1] (ENGINE-1)
437AL, 438AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
5	E-SEALS	AIPC 30-21-51-01-020

E. Referenced Information

REFERENCE	DESIGNATION
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 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 24-42-00-862-001-A	De-energize the Ground Service Network Supplied from the External Power
TASK 30-21-51-210-040-A	Inspection/Check of the Seal of the Engine Air-Intake Anti-Ice Valve
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure
TASK 71-00-00-710-003-B	Engine Automatic Start
TASK 71-00-00-710-004-B	Engine Manual Start
TASK 71-00-00-710-028-B	Engine Shutdown
TASK 71-13-00-010-040-B	Opening of the Fan Cowl Doors
TASK 71-13-00-410-040-B	Closing of the Fan Cowl Doors
Engine Air-Intake Anti-ice Valve (4000DN)
Duct Coupling Installation
Foil Wrap Installation at Pneumatic System Joints

3. Job Set-up
Subtask 30-21-51-865-053-A ** ON A/C NOT FOR ALL

A. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
122VU	ANTI ICE/ENG/2	1DN2	W10
122VU	ANTI ICE/ENG/1	1DN1	X10

Subtask 30-21-51-860-050-A ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
(1) Make sure that the ground service network is energized
(Ref. AMM TASK 24-42-00-861-001).
(2) On the center pedestal, on the ENG panel 115VU, make sure that a WARNING NOTICE(S) is in position to tell persons not to start the engine.
(3) On the overhead maintenance panel 50VU, make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off. Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize the FADEC 1(2).

Subtask 30-21-51-010-052-A ** ON A/C NOT FOR ALL

C. Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-040):
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR

4. Procedure
Subtask 30-21-51-210-052-A ** ON A/C NOT FOR ALL

A. Before installation, visually inspect the E-seals (5), and if necessary, replace them (Ref. AMM TASK 30-21-51-210-040)

Subtask 30-21-51-420-051-A ** ON A/C NOT FOR ALL

B. Installation of the Engine Air-Intake Anti-ice Valve
(1) Remove the protective covers from the electrical connectors on the harness and the anti-ice valve.
(2) Remove the protective covers from the muscle pressure hose and the union on the anti-ice valve.
(3) Remove the blanking plugs from the air intake cowl anti-ice supply duct, the forward duct and the anti-ice valve (15).
(4) Connect the anti-ice valve (15) to the forward duct and the air intake cowl anti-ice supply duct. Use the couplings (10) and serviceable AIPC 30-21-51-01-020 E-SEALS (5). Tighten the coupling sufficiently to hold the anti-ice valve in position.
(5) Make sure that the flow arrow on the valve points to the air intake cowl anti-ice duct and that the index mark is aligned with the forward duct.
(6) Do a check of the coupling.

Duct Coupling Installation ** ON A/C NOT FOR ALL

CAUTION: WHEN YOU CLOSE THE COUPLING, MAKE SURE THE SADDLE WASHER IS IN CORRECT POSITION. THE SADDLE WASHER IN THE END OF THE SLIDE MUST BE BETWEEN THE NUT AND THE COUPLING BODY. IF THE COUPLING IS NOT CLOSED CORRECTLY IT WILL FAIL.

CAUTION: MAKE SURE THE SMOOTH CIRCULAR SURFACE OF THE COUPLING IS RADIALLY OUTBOARD FROM THE ENGINE. DO NOT LET THE COUPLING TOUCH ENGINE COMPONENTS OR STRUCTURE. DAMAGE TO THE COMPONENTS OR STRUCTURE COULD OCCUR.

(a) Try to move the slide.
(b) If the slide moves, open the coupling.
(c) Close the coupling with the saddle washer in the correct position between the nut and the coupling.
(7) TORQUE the nuts on the couplings (10), as follows:

CAUTION: MAKE SURE THAT THE DUCTS ARE CORRECTLY CONNECTED WHEN YOU TORQUE THE COUPLINGS. IF THE DUCTS ARE NOT CORRECTLY CONNECTED THEY CAN LEAK AND CAUSE DAMAGE TO ADJACENT ELECTRICAL COMPONENTS.

(a) TORQUE the coupling nut to between 85 and 70 lbf.in (0.96 and 0.79 m.daN )

.
(b) Lightly hit the perimeter of the coupling in several places. Use a HAMMER - FIBER not made of metal.
(c) Do steps (a) and (b) above two more times. Then do step (a) again.
(8) Connect the hose (20) to the valve (15).
(9) TORQUE the hose coupling to between 160 and 150 lbf.in (1.81 and 1.70 m.daN )

NOTE: Use a second wrench to hold the union on the anti-ice valve when you torque the hose (20) coupling nuts.

(10) Connect the electrical connector 4000DN-A to the anti-ice valve (15). Tighten the electrical connector with your hand.

Subtask 30-21-51-480-050-A ** ON A/C NOT FOR ALL

C. Preparation for the Leak Test

Foil Wrap Installation at Pneumatic System Joints ** ON A/C NOT FOR ALL

(1) Two procedures are possible to find the location of a pneumatic-joint air leak.

NOTE: Apply dry developer only on the connections of the removed pneumatic components. Do not apply dry developer on all the pneumatic components.

You can apply dry developer (Material No.CP3010) around the pneumatic joints or you can apply Adhesive Film Tape-- Aluminium Foil - Sound damping - (Material No.05RAC1) around the pneumatic joint locations.
(2) Do the steps that follow to apply Adhesive Film Tape-- Aluminium Foil - Sound damping - (Material No.05RAC1) to the pneumatic joint locations:
(a) Wind the foil wrap around the joint one time.
(b) Twist the seam of the foil wrap tight as shown.
(c) Make the foil wrap as tight as possible on the tube but do not cause damage to the wrap.
(d) Attach the foil wrap with CP8004lockwire 0.6 mm (0.0236 in.) dia at the two sides of the pneumatic joint.

Subtask 30-21-51-860-058-A ** ON A/C NOT FOR ALL

D. Put the aircraft back to its initial configuration.
(1) Make sure that the work area is clean and clear of tools and other items.

Subtask 30-21-51-861-060-A ** ON A/C NOT FOR ALL

E. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).

Subtask 30-21-51-865-054-A ** ON A/C NOT FOR ALL

F. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
122VU	ANTI ICE/ENG/2	1DN2	W10
122VU	ANTI ICE/ENG/1	1DN1	X10

Subtask 30-21-51-410-064-A ** ON A/C NOT FOR ALL

G. Close Access
(1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR.

Subtask 30-21-51-860-059-A ** ON A/C NOT FOR ALL

H. Do the EIS start procedure (SD DU only) (Ref. AMM TASK 31-60-00-860-001).

Subtask 30-21-51-869-051-A ** ON A/C NOT FOR ALL

I. On the ANTI ICE overhead control & indicating panel 25VU, make sure that the ENG1 (2) pushbutton switch is released.

Subtask 30-21-51-710-050-A ** ON A/C NOT FOR ALL

J. Test
(1) Start the related engine with the automatic or manual start procedure (Ref. AMM TASK 71-00-00-710-003) or (Ref. AMM TASK 71-00-00-710-004) and keep it at idle.
(2) Do this test:

ACTION	RESULT
1.On the ANTI ICE overhead control & indicating panel 25VU: push the ENG1 (2) pushbutton switch	On the ANTI ICE overhead control & indicating panel 25VU: the ON legend of the ENG1 (2) pushbutton switch comes on the FAULT legend of the ENG1 (2) pushbutton switch comes on for a short time during movement of the valve (the engine air-intake anti-ice valve opens).
after 5 minutes, release the ENG1 (2) pushbutton switch	the ON and FAULT legends of the ENG1 (2) pushbutton switch go off.

(3) Stop the engine (Ref. AMM TASK 71-00-00-710-028).

Subtask 30-21-51-865-072-A ** ON A/C NOT FOR ALL

K. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
122VU	ANTI ICE/ENG/2	1DN2	W10
122VU	ANTI ICE/ENG/1	1DN1	X10

Subtask 30-21-51-010-066-A ** ON A/C NOT FOR ALL

L. Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-040):
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR

Subtask 30-21-51-210-060-A ** ON A/C NOT FOR ALL

M. Visual Inspection
(1) Make sure that there are no leaks at the anti-ice valve of the related engine air intake.
(2) Remove the materials used to do the leak test.

5. Close-up
Subtask 30-21-51-860-060-A ** ON A/C NOT FOR ALL

A. Do the EIS stop procedure (Ref. AMM TASK 31-60-00-860-002)

Subtask 30-21-51-865-073-A ** ON A/C NOT FOR ALL

B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
122VU	ANTI ICE/ENG/2	1DN2	W10
122VU	ANTI ICE/ENG/1	1DN1	X10

Subtask 30-21-51-410-051-A ** ON A/C NOT FOR ALL

C. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(3) Remove the WARNING NOTICE(S).

Subtask 30-21-51-862-057-A ** ON A/C NOT FOR ALL

D. De-energize Electrical Circuits
(1) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(2) De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).

[Rev.10 from 2021] 2026.04.01 00:30:22 UTC