Subtask 21-31-00-941-054 
 C. Put the access platform in position below the outflow valve in zone 172. 
 Subtask 21-31-00-860-069 
 D. Make sure that the outflow valve is in the open position. 
 4. Procedure_________ 
 Subtask 21-31-00-110-050 
 A. Cleaning of the Outflow-Valve Moveable Seals (Ref. Fig. 701/TASK 21-31-00-991-006)  
R R  WARNING : OBEY THE MANUFACTURER'S INSTRUCTIONS WHEN YOU USE THIS/THESE_______ MATERIAL/S. USE PROTECTIVE CLOTHING, RUBBER GLOVES AND GOGGLES. 
 (1) Clean the moveable seals (1) with a soft bristle brush, lint free cloth and CLEANING AGENTS (Material No. 11-006). 
 (2) Blow any dust or loose deposits from the moveable seals with a low pressure (overpressure 1 bar), clean, dry air supply. 
 (3) If necessary repeat the cleaning procedure until the seals move freely with a light finger pressure. 
R R R R  (4) If the seals are clean: - press them into their slots with two fingers. If the seals do not come out easily and smoothly: - remove the related outflow valve (Ref. TASK 21-31-51-000-001) (Ref. TASK 21-31-51-000-006) - change the springs which are installed behind the seals (Ref. CMM 213130). - install the related outflow valve (Ref. TASK 21-31-51-400-001) (Ref. TASK 21-31-51-400-006)
 Outflow-Valve Moveable Seals - Component Location 
 Figure 701/TASK 21-31-00-991-006 
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 5. Close-up
________ Subtask 21-31-00-860-070
 A. Aircraft Maintenance Configuration
 (1) Make sure that the work area is clean and clear of tool(s) and other items.
 (2) Remove the access platform(s). Subtask 21-31-00-865-069
 B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1HL, 2HL, 3HL.
 Subtask 21-31-00-862-062
 C. De-energize the aircraft electrical circuits
 (Ref. TASK 24-41-00-862-002).
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 CONTROLLER - CABIN PRESSURE (11HL,12HL) - REMOVAL/INSTALLATION
______________________________________________________________
 TASK 21-31-34-000-001
 Removal of the Cabin Pressure Controller (11HL,12HL)
 1.
 Reason for the Job
__________________
 Self Explanatory
 2.
 Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------
REFERENCE  QTY DESIGNATION
 -------------------------------------------------------------------------------
No specific blanking caps
 No specific circuit breaker(s) safety clip(s)
 No specific access platform 1 m (3 ft. 3 in.)
 B. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE  DESIGNATION
 -------------------------------------------------------------------------------
24-42-00-861-001  Energize the Ground Service Network from the External Power
 **ON A/C 001-049, 051-061, 101-105, 201-203,
 21-31-34-991-001 Fig. 401 R **ON A/C 062-099, 106-149, 151-199, 204-299, 301-399, 401-499,
 21-31-34-991-001-A  Fig. 401A **ON A/C ALL
 3. Job Set-up
__________
 Subtask 21-31-34-861-050
 A. Energize the ground service network
 (Ref. TASK 24-42-00-861-001).
Subtask 21-31-34-865-050 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址:A320飞机维护手册 AMM AIR CONDITIONING 空调 3(22)