R502 oil type

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R502 oil type

SWEP uses cookies to make your visit to our web pages as pleasant as possible. By using our services, we assume that you agree to the use of cookies. Further information on data protection can be found in our privacy policy. Refrigerants are divided into groups according to their chemical composition. Following the discovery that some of these chemical compounds may be harmful to the environment, they are being replaced with more environmentally friendly alternatives see Figure 5.

The process is not easy, and although there are alternatives to old refrigerants, the new ones are usually not flawless. In the following section, different groups of refrigerants are discussed, some examples are given and their fields of application are described.

Chlorofluorocarbons are refrigerants that contain chlorine. They have been banned since the beginning of the 90's because of their negative environmental impacts. The conversion of equipment and systems using CFCs has not yet been completed. The slow phase-out of CFCs shows it is a costly process. However, and more importantly, it also shows the problems and indecisiveness surrounding the availability of HCFCs, which were officially indicated as temporary until substitutes for CFCs.

The hasty actions of the European Union that culminated in the ban of HCFCs, immediately for refrigeration and soon at the latest for air conditioning, has upset the industry's programs and plans. Examples of hydrochlorofluorocarbons include R22, R and R see Figure 5. However, their impact on global warming is very large compared with traditional refrigerants.

Fluorocarbons Figure 5. However, they are extremely stable, and they have a high GWP cf. R is an example of a fluorocarbon, and FCs are also present in the mixtures R and R Hydrocarbons are a very limited solution to the environmental problems associated with refrigerants. The use of HCs as refrigerants is confined to Europe, because many other countries elsewhere have banned the use of flammable gas in the presence of the public.

However, the standard IEC This standard has opened the way for some European refrigerator manufacturers to produce household refrigerators with flammable isobutene, Ra. These have been accepted enthusiastically by environmentalists, and have achieved great success in the market. Ammonia, R, is an attractive refrigerant alternative. It has been used in refrigeration systems since and in vapor compression since Remember Me?

Results 1 to 13 of Thread: mineral oil in R system. Can mineral oil be used under any circumstances with R? I recently checked a system where the compressor was definately low on oil with very little showing in the crankcase sight glass. A horizontal distance of approx 60' seperates the condensing unit from the evap with about 12' vertical rise.

There is an oil trap at the midpoint of the vertical rise, the condensing unit being above the evaporator.

r502 oil type

I did not add oil to the compressor as there was no clear indication of the type of oil which had been previously used. I checked the NuCalgon web site and found that AB oil is the preferred choice or is it the only choice? The system I am referring to definately uses R, apparently the owner stocked up on it years ago before supplies got really tight.

Because of several mineral oil cans in the compressor room and no evidence of AB oil cans I have a feeling mineral oil may have been used in the compressor. Assuming that mineral oil was used in the compressor should it be removed from the system before the What are the compatability issues with mixing mineral and AB oil? Sorry for the length of this post, am a new member and am certainly impressed with the apparent knowledge of many of the regulars in this forum. If any of you guys would like to share your knowledge of this particular matter with me I would be so grateful Thank you.

If you are not positive if it was mixed or not you could pull a sample for testing. What was the status of the defrost timer at this time?

Time, duration, frequency, type of defrost?

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THe other oils came along later. It is the preferred lubricate.

r502 oil type

Be careful about adding oil, where is the oil that was in the system a few months ago. If this is a new system a few ounces of oil may be needed to "wet" the lines. If this unit has been operating for a while, why is the oil not returning? That is the problem that needs solved.

This compressor came with POE style lubricant. If POE is still in the system that is fine. If you do add mineral oil, the two lubricants will mix together and be prefectly fine. This is acceptable by Copeland see application bulletin Find the oil.

It is either logged in the evap coil s or lines below the condensing unit. Three or four things hinder oil return. Got to maintain a certain high velocity otherwise the oil laggs behind. Maybe the trap s are not in the proper places. Possibly, with twelve feet of riser And you need to have your 60 feet of length all sloping downhill towards the condensing unit.Growing environmental concerns have increased interest in hydrocarbon refrigeration systems, which have no potential for destruction of the ozone layer ODPand have negligible global warming potential GWP.

By Janaina Topley Lira. By Devin YoshimotoApr 23, By Tine StausholmJul 25, We use cookies to give you the best experience on our website.

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By continuing to browse the site, you are agreeing to our use of cookies. Toggle navigation. Recommendations for safe use of R in commercial refrigeration. Industry News. Hydrocarbons HCs have very favourable thermodynamic properties, are compatible with the most commonly used materials and lubricants, and can be used in semi-hermetic and hermetic compressors.

The high solubility of hydrocarbon refrigerants, whilst desirable for the oil circulation system, may result in a considerable decrease in viscosity of the oil in the compressor, especially with low oil temperature and high suction pressure. To ensure the safe installation and maintenance of R systems Alessandro da Silva recommends the following guidelines are followed. Read the original "Engenharia e Arquitetura" article here in Portuguese.

By Janaina Topley Lira Jul 19, Related stories. Sign up to our Newsletter Fill in the details below. That E-mail already exists on our list! Load more.Refrigerants with certain molecular structures have been identified as substances that can be harmful to the environment.

Ra refrigerants which have an ODP of zero or close to zero. The significant downside of HFC refrigerants is their high global warming potential since they belong to the category of greenhouse gases.

This fact was discovered after the Montreal Protocol was adopted and was recently covered by an amendment adopted in Kigali in October Before this amendment, the United States and the EU had introduced regulations to define the phase down and replacement of these HFCs on a federal level. Secop has been a pioneer and early adopter of hydrocarbons as refrigerants and believes the most efficient and economical friendly substances for use in cooling appliances are isobutane Ra and propane R Secop recommends the first one as a replacement for household appliances and small capacities in the light commercial segment and the latter one for medium to large light commercial applications.

Secop is also aware that the transition towards hydrocarbons is challenging for manufacturers as well as for service providers and not always feasible in the short term. Tests have so far shown good results with refrigerant RA as a drop-in replacement for RA and R The HFO hydrofluoroolefin Ryf can be used as drop-in for replacing Ra in the short-term for most of the applications.

Ryf is classified as flammable according to relevant safety standards. It is more expensive than Ra, however, it holds remarkably less greenhouse potential than Ra. Our Ra compressors can be used for testing with this refrigerant, and we will be more than happy to assist you in discovering that right solution for you and when it comes to the approval procedure. Investigations into material compatibility have so far shown good results with refrigerant Ryf in Secop Ra compressors.

These results must be confirmed in ongoing long-term tests. Currently, testing system performance can be conducted using compressors originally designed for Ra. The same application limits as described on the Ra data sheet may be used, however, partly with changed electrical equipment. Since Ryf is classified as a flammable refrigerant, the compressors must be used with starting equipment approved for flammable refrigerants.

The compressors designed for Ra do not have a safety approval for flammable refrigerants like Ryf.

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Ra and R are hydrocarbons. To cover potential risk originated from the use of flammable refrigerants. Consequently, Ra and R are only allowed to be used in household appliances designed for this refrigerant and fulfill the abovementioned standard. Ra and R are heavier than air and the concentration will always be highest at the floor. Ra must only be stored and transported in approved containers and must be handled according to existing guidelines.

Do not use open fire near the refrigerants Ra and R The refrigeration systems must be opened with a tube cutter.RA refrigerant is accepted as an alternative to R in the new equipment. It can be used also for charging of some systems operating on R, such as commercial refrigeration equipment of big universal shops, refrigeration facilities of food industry factories, transport refrigeration facilities.

As to its characteristics, RA, as it has been stated before in chapter 7, is the best to correspond to R refrigerant of all CFC, and it can be used within all the working range of temperatures and pressures characteristic for R Discharge temperatures of the compressor operating on RA, is lower than while using R, which contributes to increasing of reliability and service life of the compressor.

R refrigerant also serves as an alternative to R refrigerant in the new equipment, and it can be used for retrofit of the systems operating on R Characteristics of R are also close to characteristics of R, their working ranges coincide. Discharge temperatures of the compressor where R serves as a refrigerant is lower than that in the compressors with R Composition of vapors of RA and R, contained in the ballon, slightly differ from the composition of the liquid refrigerant.

These insignificant differences can effect operational efficiency of the systems with flooded evaporators. As practical experience shows, in some systems, where R is substituted for RA or R, the level of leakage can become higher due to using of sealing made of elastomers.

But substitution of elastomers can lead to additional costs and cause time waste for re-equipment. Methods of retrofit of refrigeration systems during transfer from R to RA or R are analogous to the methods of substitution of R12 refrigerant for Ra.

RA and R refrigerants have good compatibility with polyester oils. When charging of the liquid refrigerant into the system, it is necessary to be poured out of the charging ballon only. Ballons are provided with immersion legs with the help of which it's possible to drain liquid out of the ballon being in vertical position. Proper position of the ballon at liquid drainage is shown by arrows on the ballon and on the box for the ballon.

Refrigerant can be charged into the system either in the state of liquid or in the gaseous state. If it's necessary to transfer the liquid into tyhe gaseous state, there is used a valve of collecting pressure gage or throttling device. Disposable ballons with R do not have immersion leg, and therefore they have to be turned for liquid drainage. Usually for charging of the refrigeration system there is required less mass of refrigerant RA or R, than that of R Optimal mass of the charging dose depends on the system structure and its operational conditions.

When starting the system, they correct the volume of the refrigerant being charged.

Servicing of refrigeration systems. Substitution of R502 for R404A or R507

For comparison of pressures and temperatures of the initial refrigerant and alternative refrigerants it is necessary to use the table. Expected values of operational parameters of the refrigeration system after substitution of R for RA or R are given in the table. All rights reserved - AllChem Company.JavaScript seems to be disabled in your browser. For the best experience on our site, be sure to turn on Javascript in your browser.

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Wondering how to find out what type of VW oil your model uses? VW oil recommendations, specifications, quality standards, and oil viscosity weight are specified in your owner's manual. As an independent Audi VW service garage with decades of hands-on experience, we've seen many mechanical breakdowns on vehicles.

Experience has shown that changing your fluids is the single most important preventive maintenance routine you can perform to avoid vehicle breakdowns. Yet, for many VW owners, this seems to be one of the most neglected areas of maintenance.

Understanding Refrigerant Oils

Thoroughly flushing your fluids at the proper intervals can help your car reachmiles and beyond! VW Recommended VW Jetta oil, specifications, quality standards, and oil viscosity weight are specified in your owner's manual. Recommended VW Golf oil, specifications, quality standards, and oil viscosity weight are specified in your owner's manual. Recommended VW Beetle oil, specifications, quality standards, and oil viscosity weight are specified in your owner's manual.

Recommended VW Passat oil, specifications, quality standards, and oil viscosity weight are specified in your owner's manual. Recommended VW Touareg oil, specifications, quality standards, and oil viscosity weight are specified in your owner's manual.

r502 oil type

Recommended VW Phaeton oil, specifications, quality standards, and oil viscosity weight are specified in your owner's manual. Recommended VW Rabbit oil, specifications, quality standards, and oil viscosity weight are specified in your owner's manual. Recommended VW Eos oil, specifications, quality standards, and oil viscosity weight are specified in your owner's manual.

Recommended VW CC oil, specifications, quality standards, and oil viscosity weight are specified in your owner's manual. Recommended VW Tiguan oil, specifications, quality standards, and oil viscosity weight are specified in your owner's manual.

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All in an effort to help customers make informed choices. Check out our latest offers! Posted: September 26, Tags: vw oil changevw oilvwoil specsoil changemotor oilgerman oil. Author: Halette Jacky. VW Jetta 1. VW Beetle 2.Chemical refrigerants are assigned an R number which is determined systematically according to molecular structure.

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Common refrigerants are frequently referred to as Freon a registered trademark of Chemours. Compounds used as refrigerants may be described using either the appropriate prefix above or with the prefixes "R-" or "Refrigerant.

An alkene, olefin, or olefine is an unsaturated compound containing at least one carbon-carbon double bond. From Wikipedia, the free encyclopedia. Wikipedia list article. Forster; V. Ramaswamy; P.

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Artaxo; T. Berntsen; R. Betts; D. Fahey; J. Haywood; J. Lean; D. Lowe; G. Myhre; J. Nganga; R. Prinn; G. Raga; M. Schulz; R. Van Dorland In Solomon, S.

r502 oil type

Retrieved 9 October Daniel; Guus J. Velders; A. Douglass; P. Forster; D. Hauglustaine; I. Isaksen; L.


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