توضیحات

Sight Glass is one of the equipments whose use is very useful in the structure of refrigeration systems. Sightglasses are used to check the inside of the system, clogging of strainers and filters, refrigerant liquid level, fluid movement, color and degree of fluid transparency, as well as moisture in the system. The discoloration of the material in the middle indicates the presence of moisture, which the green color indicates the absence of moisture and the yellow color indicates the presence of moisture. It is also possible to compare the color of the fluid in different parts of the line by using this tool. Moisture penetrates into the system through incomplete vacuum. In healthy and problem-free systems, the refrigerant liquid can be seen as a column of clear liquid without foam. If the refrigerant is foamy and bubbly, it indicates that the system has a problem, and the following can be mentioned among the causes related to this problem:

• Incomplete refrigerant charging (leakage in the system)
• causing excessive pressure drop in the filter (filter clogging or any blockage in the system in the liquid path)
• There is a problem in the condenser (caused by a problem in the fan, a lack of water in the water condenser, failure of the tower pump, a problem in the tower fan, blockage between the fins, etc.)
• Low subcooling and liquid pressure drop ( caused by Being too long the liquid line, clogging of the dryer filter, small diameter of the liquid line pipe, failure of the solenoid valve, etc.)
• Heating around the liquid line