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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
2. Container and Receptacle
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A. The rain repellent fluid is packaged in a pressurized disposable-type container (Fig. 1) which is replaced when empty. Each container has a self-sealing valve with a threaded boss for attaching the container to the system receptacle.
B. There are two types of fluid presently in use, type I and type III, which are packaged in different size containers. Type III is preferred due to longer shelf life and repellent effectiveness. The two types of fluid are miscible, however when mixed, the resultant solution tends to reflect the properties of the type I fluid. Therefore, when converting from type I fluid to type III fluid, it is recommended that the system be emptied of all type I fluid before introducing the type III fluid.
NOTE: The useful service life of type I rain repellent fluid is
____ dependent upon the temperature to which it is exposed. Stored at room temperature , 65 to 75°F, a service life of about one year may be expected. Exposure to higher temperatures shortens the service life. The time rain repellent cans are installed on airplanes must be accredited to the one year useful service life storage period. Type III rain repellent fluid is not service life limited.
~.............................................................................. | | | FLUID CONTENT | CONTAINER WEIGHT | CHARGING| |FLUID| CONTAINER ................................................... PRES. | |TYPE | VOLUME | CHARGED | DISCHARGED | CHARGED | DISCH. | AT 70°F | ................................................................................ | I |793CC | 425CC | 30CC | 795 gms | 237 gms | 85 psi | | |(26.8 fl oz)| (14.4 fl oz) | (1.0 fl oz) | (1 lb | (8.4 oz) | | | | | | | 12 oz) | | | ................................................................................ | III |936CC | 505CC | 30CC | 955 gms | 240 gms | 85 psi | | |(32.0 fl oz)| (17.0 fl oz) | (1.0 fl oz) | (2 lb | (8.5 oz) | | | | | | | 2 oz) | | | 2.....…............…..............….............….........…..........….........1
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
3.
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A
737-300/400/500MAINTENANCE MANUAL
C. Contact with the rain repellent fluid can cause irritation of the skin or eyes. Precautions should be taken to prevent contact with the skin or eyes and to avoid breathing the fluid vapors.
D. The fluid in rain repellent container P/N 65-38196-5 has a citrus scent.
E. The system receptacle has a valve actuating pin which opens the container valve as the container is attached to the receptacle. As the pin enters the valve assembly, it is sealed by an O-ring in the valve prior to unseating of the valve to prevent fluid leakage. The pin is hollow and has inlet ports near the tip of the pin to allow fluid to enter the system from the container. The container and receptacle are mounted to the left of the second observer's station.
Visual Reservoir and Plumbing
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A. The container receptacle is connected by an adapter and fittings, through a shutoff valve to a translucent fiberglass fluid reservoir mounted below the receptacle (Fig. 1). The container, receptacle and reservoir are all supported by a common bracket. The can valve adapter, shutoff valve, and plumbing are enclosed in a plastic cover with cutouts for access to the shutoff valve and for viewing the reservoir. The reservoir contains a red float level indicator which is visible through the side of the reservoir. A decal on the cover indicates the fluid level at which the container should be replaced. When the level of the fluid is at the container replacement level, approximately ten individual repellent applications of fluid are left in the reservoir and plumbing leading to the spray nozzles.
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