Refrigeration compressor failure processing method

Refrigeration compressor failure processing method

The refrigeration compressor is the core and heart of the refrigeration system. The capacity and characteristics of the compressor determines the capacity and characteristics of the refrigeration system. In a sense, the design and matching of the refrigeration system reflects the capabilities of the compressor.

　　 Therefore, the refrigeration industry all over the world has invested a lot of energy in the research of refrigeration compressors, and new research directions and research results continue to appear. The technology and performance of compressors are changing with each passing day. There are many types of compressors. According to different working principles, refrigeration compressors can be divided into fixed displacement compressors and variable displacement compressors. The editor reminds that if the refrigeration compressor fails, some things must be paid attention to.

　　 1. After the original damaged compressor is removed, the system must be purged with nitrogen before connecting the new compressor system.

　　2. During the welding operation, in order not to form an oxide film on the inner wall of the copper pipe, nitrogen must be introduced, and the time for the nitrogen must be sufficient.

　　3. It is forbidden to use the compressor as a vacuum pump to empty the air in the pipeline of the external machine when replacing the compressor or other parts, otherwise the compressor will be burned and the vacuum pump must be used to vacuum.

　　 4. When replacing the compressor, you must add an appropriate amount of refrigerating oil that matches the compressor.

　　 5. The cause of damage to the original compressor must be checked before replacement, and defective parts must be replaced. Because the damage of other components will directly cause damage to the compressor.

　　 6. When replacing the compressor, the filter drier must be replaced in time. Because the desiccant in the filter drier has been saturated, the water filtering function is lost.

7. The refrigerating oil in the original system must be cleaned, because the new pump has been injected with sufficient mass-produced refrigerated lubricating oil, and different brands of refrigerating oil cannot be mixed, otherwise it will deteriorate and cause poor lubrication, causing the compressor to pull the cylinder and turn yellow. Burnt.

　　 8. When replacing the compressor, pay attention to prevent excessive refrigeration oil in the system, otherwise the heat exchange effect of the system will be reduced, and the pressure of the system will be high, which will damage the system and the compressor.

　　 9. Do not fill the refrigerant too fast, otherwise it will cause liquid hammer, which will cause the valve plate to break and cause the compressor to lose pressure.

　　10. After installation, check whether the radiator is working properly. If the system pressure exceeds the normal pressure (13-15kg), it will cause the clutch to slip, bearings, coils, or compressor damage.