Refrigeration oil: General information

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2018-04-01 14:22:13

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To prolong the service life of the refrigeration equipment uses different tools. With them we can decrease the wear of friction elements and to reduce the force of friction parts. For this purpose, the refrigeration oil. Lubrication is necessary as it improves the tightness of the device that is fixed penetrating into the particles. Also grease removes excess heat from the parts. Read more about this tool, described in the article.

Manufacturers use in installations of oil, synthetic, and mineral based fluids. If you compare features, then the first kind is the best. Liquids have a low freezing temperature, high pressure stability. Refrigeration oil synthetic base stocks used for lubricating parts, when mixed with refrigerants they have durability. With them destroyed, the materials from which made the elements of the refrigeration.

Purpose

Refrigerating oil not only reduces wear, but intended for other purposes:

  1. Partial heat removal. The oil has a good heat capacity.
  2. Remove small particles. Dust and other inclusions entrained oil, so will not damage the equipment.
  3. To improve the tightness. With the help of a viscous fluid filled in the gaps between the elements to prevent moisture and air is not trapped inside.

refrigeration oil

It is Therefore important to replace the fluid. And it can be done both independently and in a service center.

Features

When choosing the oil it is necessary to consider not only brand and price. For each equipment requires its own products, taking into account its properties. The main parameters include the density and temperature of curing. It is also important to know:

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  1. The Acidity of the refrigeration oil.
  2. Temperature opacities.
  3. Chemical stability.
  4. Surface tension.
  5. Solubility.
  6. Qualities.
  7. Viscosity.

oils for refrigerating machines

As in the refrigerator is the compressor, choose the oil should with the right consistency. For example, for the R134a equipment the tool applies with astringent properties in the range of 15-68 CST.

When choosing refrigeration oils it is necessary to consider what refrigerants are compatible with synthetic resources. There is a definite relationship. Because the oil come in contact with coolants, they have to meet some requirements:

  1. High Quality product does not accumulate in the evaporator. It circulates through the system, and even with the low temperatures to be liquid.
  2. Medium should be viscous. The products fill the refrigeration unit, should be a function of the sealing system. Note that the compressor temperature is high.
  3. The Tool must be suitable to a particular type of refrigerant.
  4. Temperature flocculation of quality in oils is quite low.
  5. The Tool should have a low acid number. It concerns the refractive index, toxicity, temperature.

In most installations the refrigerant is freon and freon. Correctly matched refrigeration oil ensures that the compressor will operate without interruption. Component is mixed with the refrigerant. If he has classes CFCs, HCFCs, HFCs, the installation should be applied to different types of refrigerating liquids.

Such products are presented in the form of mixtures, are made of synthetic hydrocarbons and mineral oils. In such products, no additives. This is a special oil for refrigeration for which you cannot use the standard mineral fluids. Semi-synthetic substances are suitable for almost all equipment used in the home and industry.

Demand of the refrigeration oil Bitzer, suitable for modern equipment. They reduce the wear of friction parts. With them will prolong the lifespan of the installations.

Mineral oil

Refrigerants R12 and R22 are used mineral resources. These products are inexpensive. Oil for refrigerating machines on the basis of naphthenic cleaned, so they are more high quality.

oil for refrigeration compressor

Products do not include additives. For its production used base oil. They undergo purification, whereby is produced a product designed for lubrication. Today common liquid Shell Clavus G, and Mobil Gargoyle Arctic, Lunaria Suniso GS and FR. These products are approved by leading manufacturers of compressors.

Semi-synthetic and synthetic tools

To fill the suitable Virginia AB Shell Clavus SD 22-12. With them the device are functioning perfectly. Synthetic oil for refrigerating compressors have low hygroscopicity, they are compatible with polymers. Of characteristics include excellent thermal stability.

the acidity of the refrigeration oil

Fluid in contact with non-ferrous metals make them corrosion protection. The product has excellent electrical insulating properties. The oil has excellent resistance to hydrolysis. New synthetic fluid was created at a time when there was HFCs. They are considered safe for the ozone layer. To them otnosyat:

  1. R23.
  2. R134a.
  3. R404a.
  4. R407c.
  5. R410a.
  6. R507.

This product is synthetic base ensures a long period operation of equipment, asthe insoluble precipitate does not appear. This means that the internal part of the system will be clean. For reciprocating mechanisms, it is necessary to buy products with viscosity ISO 22, 32. Apply liquid 46 and 68. They are mixed with halon, can be used for mixing with the freon. If you apply them to systems with dry evaporators, ensures liquid return to the compressor.

Preparation

refrigeration oil bitzer

The Repair should be performed after consulting with a specialist. You need to read the instructions. It has to be done in case of warranty, because then you can contact the service center. You have to prepare everything you need:

  1. Charging hose.
  2. Reliable pressure gauge.
  3. Vacuum pump.

Fluid Replacement

The Dressing is based on the following steps:

  1. In the compressor it is necessary to create a vacuum. Therefore it is necessary to block the unit 2 service valve. One connects the vacuum pump, it should work to set a minimum positive pressure. If the value reached 0.1 bar, it is necessary to disable the pump. Then you need to remove the oil plug. Can be screwed on the hose is equipped with shut-off valve.
  2. You Need to open the suction valve to the refrigerant vapor entered the compressor. When there is a slight positive pressure, the valve is required to close.
  3. On the rear hose, which is needed for air removal, it is important to open the shut-off valve. The end of the hose must be lowered to the bottom of the tank with oil, close the shut-off valve.
  4. Then run the vacuum pump. When the pressure is less than atmospheric, open the shut-off valve. Happens the oil flow in the installation, this can be controlled through a viewing window. You need to close shut-off valve, when the oil rises to the required level.
  5. Stops operation of the pump. It should be open the valve to create a positive pressure. The charge hose must be disconnected. In the end you need to tighten the oil plug.

oil refrigeration

Conclusion

In the technology to install will not appear and moist air. You need to add fluid? Use the syringe. The system requires replacement of the oil for refrigerating compressors we need to buy it in special shops. The work is performed and the service centers. Properly conducted procedure extends the life of refrigeration equipment.


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Alin Trodden - author of the article, editor
"Hi, I'm Alin Trodden. I write texts, read books, and look for impressions. And I'm not bad at telling you about it. I am always happy to participate in interesting projects."

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