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Figure 402A - With plate assembly ABAB Validity : With "PURITAN-BENNETT" oxygen system 35-00-00Page 407 (cA) JUN 04 PAGE INTENTIONALLY LEFT BLANK ABAB Validity : With "PURITAN-BENNETT" oxygen system Page 408 35 00 00 (CA) JUN 04 OXYGEN ADJUSTMENT / TEST WARNING : OBSERVE ALL THE SAFETY PRECAUTIONS DESCRIBED PAGE 301. CAUTION : OXYGEN SYSTEM SERVICING MUST BE PERFORMED BY QUALIFIED PERSONNEL. 1. LEAK TEST OF THE OXYGEN SYSTEM A. Tools and consumable materials - Leakage detector (TB 05-926) B. Procedure 1) Make sure that the main switch-breaker is open. 2) Install the warning sign prohibiting main switch-breaker operation. WARNING DO NOT OPERATE MAINTENANCE WORK IN PROGRESS 3) Open access door 219. 4) Set cabin oxygen control lever to "ON". Following a maintenance operation 5) Apply leakage detector (TB 05-926) on the part of the system which has been disconnected and look for bubbles. Following a detected but not located leak 5) Remove access doors, cowlings and/or upholstery panels necessary to gain access to the system components - refer to 06-30-00. NOTE : Begin the leak research with the most accessible items. 6) Apply leakage detector (TB 05-926) on the system unions and look for bubbles to localize leak. All CAUTION : DO NOT TIGHTEN AN UNION WHILE THE SYSTEM IS CHARGED. 7) If a leak is found, perform the following operations : a) Set cabin oxygen control lever to "OFF". b) Connect a passenger oxygen mask to an oxygen connecting plug to de-pressurize the system. c) Remove residual leakage detector. d) Repair as necessary - see Page 401 and refer to 35-00-01. e) Make sure all the tools and materials are removed and the work area is clean and free from debris. f) Set cabin oxygen control lever to "ON". g) Apply leakage detector (TB 05-926) on the repaired part and look for bubbles. 8) Purge oxygen system - see Page 301. 9) Make sure cabin oxygen control lever is set to "OFF". 10) Make sure all the tools and materials are removed and the work area is clean and free from debris. 11) Install removed access doors, cowlings and upholstery panels. 12) Close access door 219. 2. OPERATIONAL TEST OF THE OXYGEN SYSTEM A. Tools and consumable materials - Cleaning agent (TB 11-001) - Cleaning agent (TB 11-920) B. Procedure 1) Apply the oxygen system servicing procedure - see Page 301. 2) If necessary, charge the oxygen cylinder - refer to 12-16-00. 3) Set cabin oxygen control lever to "ON". 4) Connect a front seat oxygen mask to an oxygen connecting plug. 中国通航网 www.ga.cn 通航翻译 www.aviation.cn 本文链接地址：TB20 MAINTENANCE MANUAL 35 氧气 TB20飞机维护手册(12) |
