How to deal with the failure of the ultra-low temperature freezer compressor?

Ultra-low temperature freezer refrigeration system in operation, once the compressor failure occurs, it will affect the operation of ultra-low temperature freezers, then the impact of the failure of the compressor is, what does? This is to understand these before we deal with the compressor failure. As for how to deal with the compressor failure, let's look down!

Ultra-low temperature freezer

After the failure of the ultra-low temperature freezer compressor, after the original damaged ultra-low temperature freezer compressor is removed, the system needs to be nitrogen blown to the system to connect the new refrigeration compressor system. Next, during the welding operation, It is recommended not to create an oxide film on the inner wall of the copper tube. It is recommended to pass nitrogen gas. The time for nitrogen to pass is sufficient.

When replacing the compressor, the ultra-low temperature freezer should take care not to replace the ultra-low temperature freezer compressor as a vacuum pump to empty the air in the outer machine line. Otherwise, the compressor will be burned and all vacuum pumps will be used to evacuate. Also, when the refrigeration compressor is replaced, an appropriate amount of refrigerating oil that matches the compressor is added.

The cryogenic refrigerator compressor needs to check the cause of damage to the original compressor before replacing it, and replace the defective parts, because the failure of other parts will directly cause damage to the compressor.

When replacing the compressor, the ultra-low temperature freezer needs to pay attention to the dryer. Once the desiccant in the dryer is saturated, the water filtration function will be lost and the use will be affected. It is also necessary to replace the refrigerating oil in the original refrigeration system with a new refrigerating oil. Since the new pump has been filled with a sufficient amount of frozen oil, different grades of refrigerating oil cannot be mixed, otherwise it will deteriorate and cause poor lubrication, resulting in a refrigeration compressor. Pull the cylinder, turn yellow, burnt.

Ultra-low temperature freezer compressor replacement should also pay attention to prevent excessive refrigerant oil in the system, otherwise the heat transfer effect of the system will be reduced, resulting in high system pressure and damage to the system and compressor. Do not add too much refrigerant when it is filled, otherwise liquid hammer will occur, causing the valve to break, causing the compressor to lose pressure .

After the installation of the compressor of the ultra-low temperature freezer, it is necessary to check whether the radiator is working properly. If the system pressure exceeds the normal pressure ( 13-15kg ) , the clutch will slip, the bearing, the coil will burn out or the compressor will be damaged.

After the fault processing of the ultra-low temperature freezer compressor is completed, check whether other accessories are affected during installation and disassembly, and put it into operation after confirmation.

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