4. Procedure_________
Subtask 36-11-52-480-056
A. Preparation for the Leak Test
(1) There are two procedures to find the location of an air leak, at a pneumatic joint.
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 developer, dry (Material No. CP3010) around the pneumatic joints or you can install FOIL-ALUMINUM (Local Purchase) around the pneumatic joint locations. Use the steps that follow to apply foil, aluminium to the pneumatic joint locations.
(a) Wind the foil wrap around the joint one time.
(b) Twist the seam of the foil wrap tight.
(c) Make the foil wrap as tight as possible on the tube but do not rip the wrap.
(d) Attach the foil wrap at the two sides of the pneumatic joint with safetywire 0,024in. (0,6mm) (Material No. CP8004).
R Subtask 36-11-52-410-074-A
R B. Close Access
R R (1) Make sure that the work area is clean and clear of tool(s) and other items.
R R R R R (2) Close the thrust reverser doors (Ref. TASK 78-36-00-410-040): FOR 1000EM1 451AL, 452AR FOR 1000EM2 461AL, 462AR
R Subtask 36-11-52-440-073
R C. Make the thrust reverser serviceable (Ref. TASK 78-30-00-081-041).
Subtask 36-11-52-720-057
R D. Do this Test
(1) On the ECAM control panel 11VU, push the BLEED key (on the lower ECAM DU, the BLEED page comes into view).
(2) On the lower ECAM DU, on the BLEED page: - make sure that the related bleed pressure regulator valve is shown closed.
(3) Start the related engine with the automatic or manual start procedure (Ref. TASK 71-00-00-710-003) or (Ref. TASK 71-00-00-710-004) and keep it at idle.
(4) On the AIR COND panel 30VU: - push the ENG 1(2) BLEED pushbutton switch (OFF legend goes off).
(5) After 5 minutes, on the lower ECAM DU, on the BLEED page: - make sure that the related bleed pressure regulator valve is shown open.
(6) Do the engine shutdown procedure (Ref. TASK 71-00-00-710-028).
R Subtask 36-11-52-040-083
R E. Make the thrust reverser unserviceable (Ref. TASK 78-30-00-481-041).
R Subtask 36-11-52-010-082-A
R F. Get Access
R R R R R (1) Open the thrust reverser doors (Ref. TASK 78-36-00-010-040). FOR 1000EM1 451AL, 452AR FOR 1000EM2 461AL, 462AR
Subtask 36-11-52-080-056
R G. Make sure that there are no leaks at the junction between the bleed pressure regulator valve, the sense lines and the duct on the related engine.
NOTE : There is a leak when the foil installed on the duct breaks or when____ it is too hot.
There is a leak when the leak air removes the dry developer from
the junction.
(1) Remove the materials used to do the leak test.
5. Close-up________
R Subtask 36-11-52-410-075-A
R A. Close Access
R (1) Make sure that the work area is clean and clear of tool(s) and other
R items.
R (2) Close the thrust reverser doors (Ref. TASK 78-36-00-410-040):
R FOR 1000EM1
R 451AL, 452AR
R FOR 1000EM2
R 461AL, 462AR
R (3) Remove the access platform(s).
R Subtask 36-11-52-440-074
R B. Make the thrust reverser serviceable (Ref. TASK 78-30-00-081-041).
R Subtask 36-11-52-410-103
R C. Close Access
R (1) Close the fan cowl doors (Ref. TASK 71-13-00-410-040):
R FOR 1000EM1
R 437AL, 438AR
R FOR 1000EM2
R 447AL, 448AR
R (2) Remove the warning notice(s).
Subtask 36-11-52-860-069
R D. Put the aircraft back to its initial configuration.
(1) On the AIR control panel 30VU:
- release the ENG BLEED pushbutton switches (OFF legends come on).
(2) Do the EIS stop procedure
(Ref. TASK 31-60-00-860-002).
Subtask 36-11-52-862-060
R E. De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).
TASK 36-11-52-790-001- 01
Leak Test of the Bleed Pressure Regulator Valve (4001HA) with the APU in
Operation
1. Reason for the Job
__________________
Do this test after removal/installation of the bleed pressure regulator
valve to make sure that:
-there are no leaks on the removed parts
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