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NOTE : If the PTU runs continuously, do____
 a leakage check of the Yellow
 hydraulic system 
R
 4. Push the left rudder pedal (on  On the ECAM lower DU:
 one of the two rudder pedal  - the pressure in the Yellow hydraulic
 pairs) and then the right rudder  system is between 2200 and 3150 psi.
 pedal not less than five times
 fully forward to operate the
 rudder.
 5. Put the rudder pedals to the
 neutral position.
 6. Pressurize the Yellow hydraulic  - the PTU stops.
 system with the Yellow E-pump
 (Ref. TASK 29-24-00-863-001). 
R  7. Depressurize the Green hydraulic  - the PTU starts and pressurizes the 
R  system (Ref. TASK 29-10-00-864- Green hydraulic system. 
R  001).
 8. On the panel 40VU:  On the panel 40VU: 
R 
R  - push the PTU P/BSW.  - the OFF light of the PTU P/BSW comes
 on. 
R  - the pressure in the Yellow hydraulic 
R  system is between 2200 and 3150 psi, 
R  without a consumer in operation. The 
R  pressure in the Green hydraulic 
R  system is 0 psi. 
R 
R  9. On the panel 40VU:  On the panel 40VU: 
R  - push an release the PTU P/BSW.  - the OFF light of the P/BSW goes off. 
R  - the PTU starts to transfer hydraulic 
R  power from the Yellow to the Green 
R  hydraulic system. 
R  The ECAM lower DU shows:

 

 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
R R 
R R R R 
R R R R R R 
R R 
R R R R R R 
R R R  10. Pressurize the Green hydraulic system with a ground hydraulic supply (Ref. TASK 29-10-00-863-001). 
R  11. On the panel 40VU: 
R R  - push the PTU P/BSW. 
R R 
R R R R  12. Depressurize the Yellow and Green hydraulic system (Ref. TASK 29-24-00-864-001) and (Ref. TASK 29-10-00-864-001).

-the pressure in the Green hydraulic system is between 2200 and 3150 psi.
NOTE : When the PTU starts, the
____ pressure in the Yellow hydraulic system could decrease to 2000 psi for a short time.
-
the PTU stops when the pressure in the Green hydraulic system is between 2800 and 3150 psi.

-
the PTU starts again when pressure in the Green hydraulic system is between 2200 and 2850 psi.

NOTE : The PTU operates intermittently
____ between the given limits.
NOTE : The PTU delivery pressure in the
____ Green hydraulic system changes in low flow conditions. The difference in pressure between the stop and the start of the PTU is 200 psi minimum.
-
the PTU stops.

On the panel 40VU:

-
the OFF light of the PTU P/BSW comes on.

On the ECAM lower DU:

-
the display shows the PTU set to OFF.

-
the pressure in the Yellow and Green hydraulic system is 0 psi.

 

 5. Close-up
________ Subtask 29-23-00-860-059
 A. Put the aircraft back to the serviceable condition.
 (1)
 Do the EIS stop procedure
 (Ref. TASK 31-60-00-860-002).

 (2)
 De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).

 1EFF : ALL 1 29-23-00Page 508 1 1 May 01/04R 1 1 1CES 1

 TASK 29-23-00-710-003

 Operational Check of PTU Yellow to Green
 CAUTION : DO NOT OPERATE THE ELECTRIC PUMP OR THE PTU IF THE SUPPLY OF
_______ HYDRAULIC FLUID IS NOT SUFFICIENT. MAKE SURE THAT THE RESERVOIRS HAVE SUFFICIENT AIR PRESSURE BEFORE YOU OPERATE THE PUMP/PTU.
 1. Reason for the Job
__________________
 Refer to the MPD TASK: 291000-06
 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
12-12-29-611-001 Fill the Hydraulic Fluid Reservoir with a Hand Pump 12-12-29-611-002 Fill the Hydraulic Fluid Reservoir with a Hydraulic Service Cart 24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied
 from the External Power
R 29-00-00-280-001 Check of the Internal Leakage of the Green Hydraulic
　
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