The reason of frozen oil deterioration and detection method

a, the main cause of deterioration

mixed with water, because of the refrigeration system into the air, the moisture in the air after contact with the refrigerant oil mixed; Refrigerant in the moisture content is large, also can make water mixed with freezing oil. Viscosity of refrigerant oil mixed with water, reduce, cause corrosion to the metal. In the freon refrigeration system, still can cause 'ice plug' phenomenon.

oxidation: frozen oil in use process, when the compressor exhaust temperature is higher, it is possible to cause the oxidation, especially the chemical stability of frozen oil, are more likely to be bad, after a period of time, can form residue in the refrigeration oil, make the place such as bearing lubrication go bad. Organic fillers, such as mechanical impurities mixed in the refrigeration oil will accelerate its aging and oxidation.

frozen oil mix: several different brands of frozen oil mixed use, will cause the refrigeration oil viscosity is reduced, and even can destroy the formation of oil film, damage to the bearings. If two kinds of refrigeration oil, containing different antioxidant additive, when mixed together, it is possible to produce chemical changes, sediment formation, make compressor lubrication affected, therefore, should pay attention to when using.

there are impurities in the refrigeration oil: frozen oil magazine is not pure.

2, how to judge whether frozen oil metamorphism

high quality refrigeration lubricating oil is very pure, color yellow or colorless transparent liquid. Used for a period of time in the compressor refrigeration lubricating oil will gradually become dark color, transparency will follow gradually becomes poor, cause metamorphism, metamorphism of frozen oil, its cooling and lubrication effect becomes poor, will be generated in the process of the compressor running carbon compound, it is easy to cause dirty plugging of cooling system.

whether freezing lubricating oil metamorphic method:

drop paper method: take a clean white paper, frozen oil out of the compressed chassis, drop on the white paper, for a while the color of white oil drops, if the oil color is very shallow and distribution is evener, explain frozen oil quality is good, can continue to use: if found white with dark dot or circle, then freezing lubricating oil has been spoiled or impurities contained too much, should consider to replace.

contrast method: take if unused frozen oil, pour people clean the glass tube or within the cylinder stand for a period of time, as a standard sample. Then needs to determine freezing lubricating oil from the compressor, and pour one another container, the same compare with my eyes. If the frozen out of the compressor oil color, transparency, and standard of frozen embellish a color and transparency is the same as the lubricating oil, show that no metamorphism; If frozen out of the compressor oil compared with standard frozen embellish lubricating oil has the obvious difference, turn into orange or reddish brown mixed corrosion state, that freezing lubricating oil has been bad, not after continued use, a freezing lubricating oil should be replaced.

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