A320飞机维护手册 AMM HYDRAULIC POWER 液压1(97)

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 (2) Refer to the ECAM indication of the YELLOW system pressure and make sure it shows 3000 psi.
 NOTE : If the PTU is not isolated, it pressurizes the Green system at____ the same time. Usually, the PTU pressurizes the system to a nominal pressure of 3000 psi, but if no consumers operate, the pressure is not constant. The PTU operates in a cycle which keeps the pressure in the Green system between 2400 and 3100 psi.
 5. Close-up________
 Subtask 29-10-00-860-055
 A. Put the aircraft back to the serviceable condition.
 (1) Depressurize the Yellow hydraulic system (Ref. TASK 29-10-00-864-002). 
R  (2) Disconnect the hydraulic ground power-supply. 
R R  (3) On section 40VU of the overhead panel, push the PTU pushbutton switch. Make sure that the OFF legend goes off.
 (4) Connect the PTU isolation coupling (Ref. TASK 29-23-00-860-002). 
R R R  (5) Make sure that the fluid level in the reservoir of the Yellow hydraulic system is correct. Add fluid as necessary (Ref. TASK 12-12-29-611-001) or (Ref. TASK 12-12-29-611-002).

 

R R  (6) If necessary, pressurize the reservoir of the Yellow hydraulic system (Ref. TASK 29-14-00-614-002). 
R  (7) Do the EIS stop procedure (Ref. TASK 31-60-00-860-002). 
R  (8) De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).
 Subtask 29-10-00-410-051
 B. Close the access door 198CB.

 

 TASK 29-10-00-863-003
 Pressurize the Blue Hydraulic System with a Ground Power Supply
 WARNING : OBEY THE HYDRAULIC SAFETY PROCEDURES.
_______
 WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROL SURFACES ARE
_______
 CLEAR BEFORE YOU PRESSURIZE/DEPRESSURIZE A HYDRAULIC SYSTEM.

 WARNING : PRESSURIZE ONLY THE HYDRAULIC SYSTEM(S) THAT IS (ARE) NECESSARY FOR
_______ THE TASK. ISOLATE THE OTHER HYDRAULIC SYSTEM(S) BEFORE YOU SUPPLY HYDRAULIC POWER TO THE AIRCRAFT.
 1. Reason for the Job
__________________

 This procedure describes the pressurization of the Blue hydraulic system
 with a ground power supply.
 You can also pressurize the Blue hydraulic system with the Blue electric
 pump as given in the next Task (Ref. 29-10-00-863-003-01).

 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
R No specific hydraulic ground power-supply
 B. 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 29-14-00-614-001 Depressurization of the Hydraulic Reservoirs 29-14-00-614-002 Pressurization of the Hydraulic Reservoirs through the Ground Connector 31-60-00-860-001 EIS Start Procedure

 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
31-60-00-860-002  EIS Stop Procedure
 3. Job Set-up__________
 Subtask 29-10-00-010-052
 A. Open the access door 197EB.
 Subtask 29-10-00-865-068
 B. Make sure that this(these) circuit breaker(s) is(are) closed:
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU HYD/HYD PWR/B WARN/& CTL 2702GJ C12
 Subtask 29-10-00-860-081
 C. Aircraft Maintenance Configuration
 (1) Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002).
 (2) Do the EIS start procedure (Upper ECAM DU and lower ECAM DU only) (Ref. TASK 31-60-00-860-001).
 (3) On the ECAM control panel on the center pedestal, push the HYD pushbutton switch (P/BSW). Make sure that the lower (system) display shows the HYD page. 
R R R  (4) Make sure that the ECAM does not show these warnings: - Low air pressure in the Blue reservoir - Low fluid level in the Blue reservoir.
 (5) If necessary, pressurize the reservoir (Ref. TASK 29-14-00-614-002).
 (6) If necessary, add fluid to the reservoir (Ref. TASK 12-12-29-611-001) or (Ref. TASK 12-12-29-611-002). 
　
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