Vacuum pumping is an essential process before filling refrigerant in the process of production or maintenance of refrigeration equipment. That is, the vacuum pump is connected with the refrigeration system pipeline to remove the non condensable gas and water in the system pipeline.
Hazards of not vacuuming:
Blocking the pipeline: if the water content of the system exceeds a certain limit, ice blocking will be formed at the capillary outlet, so that the refrigerant can not circulate normally.
Corrosion: water reacts with refrigerant, hydrochloric acid and fluorine acid will damage the insulation layer of compressor.
Copper plating and rusting: the oxygen in the residual air reacts with hydrochloric acid and copper to produce copper plating, which corrodes the copper and iron parts in the system pipes and shortens the service life of system parts.
Decomposition of refrigerant: oxide produced by corrosion will accelerate the decomposition of refrigerant.
Deterioration and aging of lubricating oil: the oxygen in the residual air will oxidize the frozen lubricating oil to decompose and deteriorate the lubricating oil.
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