(c)
Install protective caps or plugs to all openings of the tube assemblies and system components: 1) Use the protective caps or plugs on the standard BAC, NAS,
AN and MS fittings, which were individually sealed in polyethylene bags.
2) You can use protective caps that are visually clean on B-nuts and other fittings: a) If the protective caps do not touch the threads or
permit plastic shreads to get inside the oxygen system. 3) Do not use the plastic protective plugs and caps that have been used before. 4) Protective metal caps can be used again after they are cleaned. 5) Do not use the plugs which can be manually pushed down in to the tubes. 6) Seal the protective caps and plugs in polyethylene bags and do not open until they are ready for use.
NOTE: If the polyethylene bags have been used they
____ must be sealed again immediately to prevent contamination.
(d)
Seal all tube assemblies or tube assembly ends in polyethylene bags.
(e)
Put the protective caps or plugs on the tube nuts.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
35-00-00
ALL ú ú 01 Page 704 ú Oct 10/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 747-400 MAINTENANCE MANUAL
(f) Do not open polyethylene bags that hold oxygen system components until immediately before the installation.
NOTE:____ If a bag contains such components and is torn or unsealed during the storage, the parts must be cleaned again.
(g) Indentify all bags that contain oxygen system components and protective caps and plugs that have been cleaned: 1) "Breathing Oxygen System Components" 2) Part number and the date when the part was cleaned and sealed.
(h) If the components are sealed, put them where they will be protected from dust, moisture, lubricants and all other contaminants.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
35-00-00
ALL ú ú 01 Page 705 ú Feb 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
THERMAL COMPENSATOR ASSEMBLY - DESCRIPTION AND OPERATION
________________________________________________________
1. General_______
A. The thermal compensator assemblies are installed in areas of the oxygen system at which the flow of high pressure oxygen might be limited. The thermal compensators absorb and diffuse the heat generated when oxygen flows through the system.
B. Thermal compensator assemblies consist of a brush-like wire element tightly fitted into a stainless steel tube (Fig. 1). The thermal compensator is a permanent part of the coupling assembly.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
35-00-01
ALL ú ú 03 Page 1 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
CYLINDER
Thermal Compensator Assembly
Figure 1
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
35-00-01
ALL ú ú 02 Page 2 ú Jun 10/88
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
THERMAL COMPENSATOR ASSEMBLY - CLEANING/PAINTING
________________________________________________
1. General_______
A. A thermal compensator is installed in each coupling assembly on the oxygen cylinder. The brush-like element cannot be removed from the coupling assembly because it is welded to the housing.
B. Make sure you install a cap on the tubing after you disconnect the tubing. This will prevent contamination of the thermal compensator with lint or hydrocarbons.
中國航空網 www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：747-400 AMM 飛機維護手冊 氧氣 OXYGEN(8)
