R12 to r134a conversion table. One key to the use of R-134a is the amount to use.

R12 to r134a conversion table Fortunately, we have an R12 to R134a conversion chart and formula to retrofit appropriately. A charge level between 75% and 85% is recommended when converting from R12 to R134a Looking for an R12 to R134a conversion chart? This article provides a comprehensive guide on how to convert your car's AC system from R12 to R134a refrigerant. There are R12 to R134a conversion kits you can buy to help you perform this project efficiently. ; Replace Components: Install new seals or o-rings and use a compatible compressor if needed. Their formula is: (R12 lbs x . R-134a can remove more heat than R-12. 6 PSI and the pressure of R-134a is 22. R-12 Pressures: Use different amounts. R134a is lighter than R12. 9 (your answer should be 90% of Adapting from R12 to R134a: The Conversion Process. EDIT: From link in post 12 on converting to R134a from R12: When Converting From R12 to R134a, Does the System Use Less Refrigerant? Yes, there will be less refrigerant by weight. 2) Add the recommended amount of PAG or Ester oil 3) Swap out the high and low-pressure switches 4) Attach high and low port adapters. #9 06-15-2008, 01:00 AM slboy. R-134a is slightly less efficient and condensers will usually have to be upgraded to match the cooling performance of R12. False economy. 1 PSI. dwivedi / CC BY-SA 4. R-134a O-rings are blue or green in color. 75 = Converting from R12 to R134a is not just a cost-effective solution; it’s a necessary process to comply with environmental regulations and ensure the longevity of your vehicle’s air When converting an R12 system to 134a, charging amounts vary from system to system. Now in order to abide by the law, the cars manufactured before 1995 needed to have a refrigerant conversion from R12 to R134a, which also led to further complexities. 1 2 of 6 Go to page. Owners of GM classics including Camaros, Corvettes, Novas, and more will find detailed instructions on how to convert GM R12 air conditioning system to 134a on the CAA True, and I thought about staying with R12, but as I have dug into the conversion, I found that the '94-'95 Hilux trucks are running R134a in basically the same AC system as the older trucks, and it works well from what people say. Here are some industry factoids on the differences in R12 and R134a R12 factoids: R134a factoids: but it is also among the most difficult to convert from R12 to R134a due to the fact that you have to change the compressor oil, flush the system, replace the filter drier, evacuate the system, then recharge it with the proper amount of R-134a. Almost all vehicles produced between 1995 and 2015 use R-134a. In connection with this, the normal boiling point is at 15 K resp. You can begin the formula in pounds by multiplyi R12 to R134a Refrigerant Charge Conversion Charts – techtownforum. 7 lbs so going with 1. 65 lbs. In 1996 systems were switched over to R134a from R12 refrigerant. Conclusion: Converting from R12 to R134a offers numerous benefits, both for your vehicle’s air conditioning system and the environment. g. Preparing The Car Ac System retrofitted R-12 systems to use the later R-134a. Conversion charts give you the required R134a charge level at a glance. ) Use this calculator to convert the amount of R12 refrigerant to its equivalent in R134a. The condenser and evaporator are simply heat exchangers so they also do not need to be changed to run a different 93 Stealth ES - 3000GT conversion,AWD conversion, ACPT 1 piece CFDS, Operable AA wing, 99 rear garnish, R/T sails, ABS delete, SS Clutch line, SS braided brake lines, Vac clutch assist, 2G TT brakes all around, Kyb Gr-2 R12 to R134a Conversion Kits. The formula is this: R-12 amount x 90% – 1/4 lb. R12 to r134a conversion kit r12 to r134 a high/low ac fitting adapter R134a r12 kits refrigerant calculate R-12 to 134a conversion chart R12 r134a convert roadsumo Actually I did the the R134 conversion on my 86 4 Runner by simply changing the fittings, vaccum pumping the system and charge R134 directly. Calculating How Much R134a You Need. Sealing Washers Included: No. What is R12? R12, also known as dichlorodifluoromethane, was once the most common refrigerant used in vehicles. These tables account for air temp and humidity levels to fine tune the amount. 2. With sections on everything from acoustics to hydraulics, it serves as a comprehensive tool for both R12 to R134a Conversion. R12 to 134a conversion. This applies to specifications listed in pounds only. 1991 Suburban Discussion starter. Jump to Latest 21 - 40 of 108 Posts. Discard any R12 refrigerant still in the system by taking your vehicle to a licensed air-conditioning professional. For example, you only need to change the compressor lubricant of a vehicle that features R134a-compatible seals, compressors, and barrier-style hoses. ; Charge the System: Follow the manufacturer’s specifications for the correct amount of R134a. 6 lbs of R12 and using the above formula ^ it would work out to 1. R134A as a replacement for R12 R12 to R134 adapters Soon, R12s were banned in many places. txt) or read online for free. pdf), Text File (. the general rule of thumb when converting is 70-80 percent of the r12 capacity. Home › Forums › Archives › r12 to r134a conversion on old beverage air refrigerator. New Compressor Conversion Retrofit Component Retrofit Kit Threaded Vacuum Pump Valve Core Show more R134a. Posts: 9 About The switch to R-134a (unfortunately, still a potent greenhouse gas) is not a big deal, according to many people who have successfully made the transition by evacuating the leftover R-12 and non It is fairly easy to convert vintage cars from the 1990s to R134a. One key to the use of R-134a is the amount to use. But if your R12 system An alternative to R12 refrigerant is R134A. 1. FORD PICKUP R134a Conversion Kits are identical to the R12 Kit except supplied with a 134a compressor and proper hose fittings for system charging. (10. Replace the Receiver-Dryer: Remove the old receiver-dryer, as it may contain R12 oil and contaminants. Among those available online are the following: Certified AC Pro Car Air Conditioner Adapter Kit; R12 to R134A Starting in the early '80s, engineers were looking for an effective replacement for R-12 and ended up with R-134a. R12 to R134a Refrigerant charge conversion in pounds. As R12 used a different oil that was not fit to be used with R134a, the replacement was not that simple. 4-1. We definitely recommend reading more Understanding Refrigerants: R12 and R134a. If Don’t be mistaken: a modern R134a system will outperform a 30-year-old R12 system. Here are steps for To convert R12 to R134a in your system there are only a few small changes you need to make to the system. (Pressure in the system will be higher if the A detailed BMW Tech Bulletin covers the R12 to R134a conversion (BMW Document # 64 05 96). FORD. Conversion de R12 à R134a et pièces nécessaires. Description. It will generally cost you about $200 to have a mechanic convert an AC system for you. As a result, they were replaced by other refrigerant gases, including R134A. = R-134a amount. This leads to operating pressure levels that are much lower than previously EDIT: R12 capacity is 1. techchoiceparts. Some of its characteristics include: 1983 - 2012 Ranger & B-Series - Converting 93 to 134a - I am wondering how hard it is 2 convert over 2 134a? My 93 has finally stopped cooling after all these years and I guess I need 2 convert over. In this article, we have covered quite a lot when it comes to the R12 to R134a conversion. Go. High Operate On (psi): 0 To 500 psi. r134a Refrigerant Chart Guide - Free download as PDF File (. With the phase-out of R12 (1st January 1996) many compromises have to retrofit to R134a. That the part itself is only about 10 bucks. Informations R12; Conversion de R12 en R134A; Conversion de R12 en R134A Compresseur AC. They work as good as they didn on R12. This change enhances compatibility and system efficiency. Location: Dallas, TX. A friend of mine who's been a life long mechanic said its just a matter of putting the different fitting on. 25 lb. The 650 grams of R134a shown in that conversion table would back up the condenser with liquid which would increase the high side pressure more than a properly done conversion. R134 works great in systems designed for it, but not nearly as well in R12 systems - essentially it's a capacity issue, R134 requires "more" and an R12 system doesn't have it. Low No retrofitting needed. Installing New Components. 9) - . you'll find R-134a is a fairly close match to R12. Ester oil Buy R12 to R134a Conversion Kit, R12 to R134a AC Retrofit Fitting Adapter Kit, High/Low Pressure R12 to R134a Retrofit Kit with 1/4'' Female to 7/16"-20 UNF Connection, for Auto A/C Refrigerant System: Air Conditioning The only mechanical differences between an R12 system and an R134a system are that R134a systems mostly have larger condensers and are more strong compressors. The compressor that is used in your older R12 system luckily will still work R134a refrigerant and still be just as efficient. R12 to R134a Charge Conversion Formula (pounds only) A charge level between 75% and 85% is Here’s how to convert R12 to R134a with the factory method. But for now, sit back and enjoy that nice cool ride. I can further go into more detai Retrofitting AC systems is something that has been done for many years now. viscosity, thermal conductivity), converting units, and designing systems like heating and water distribution. viscosity, thermal conductivity), converting units, and designing systems like heating and water Instead you can convert an R12 system to an R134a system with a few parts and some basic tools. R-12 O-rings are black in color. The autozone part number was the same for both models (38623). You’ll learn what you need to learn by doing what you The first step in converting your refrigerator from R12 to R134a is to gather all the necessary tools and materials. What needs to be done Assorted O-Rings manufactured for R134a A/C systems. 55 lbs. You should check the part number on your compressor prior to the Personally, I'll never convert my beloved 560 SL to R134a. Repair the system properly and spend the money to fill it with R12, and you'll have as good an a/c system as a 308 can have. R12 to R134a Conversion Tables – Pounds & Ounces. 1) Discharge the R12 and recover the R12 for recycling. For converting classic Ford, we have a complete set of instructions on the Classic Auto Air website explaining how to convert your Ford R12 air conditioning system to 134a. A simple rule of thumb conversion would be to take the amount of R12 refrigerant your system requires, in pounds, and multiply by 0. Hey everyone, Just curious what parts and process are/is involved with a R12 to R134a retrofit? I need to recharge my R12 and was considering either having the retrofit done, or doing it myself. R12 O-rings can only be used to a limited extent with R134a and can start to leak when they come into contact with R134a and/or synthetic oil. We learned why the conversion is necessary and why the R12 isn’t produced anymore. Since an R12 to R134a conversion is using the same components, how less efficient is a system that uses R134a with A/C -- R12 To 134A conversion. We definitely recommend reading more Freon 134a refrigerant for car AC by Suyash. L’une est la méthode d’usine, où vous auriez besoin de remplacer les pièces CA, et l I thought that I had heard the same thing, but when I converted my 92 system to R134A, I checked part number and availability on the autozone web site for my 92 (orginally R12) and for a 95 (R134A). O-rings in R12 systems are usually as old as the vehicle itself and/or the air conditioning system to be converted. 4 oz. Below are other reasons why many decide NOT to convert from R12 to R134a: 1. This preparation is vital in ensuring a successful and safe transition. Jump to Latest 29K views 8 replies 4 participants last post by Chris Miller Apr 4, 2011. 25 lbs. This is mainly because R134a doesn’t cool down as well and Alberta, Canada: On my old case tractors (2090, 970,) I just put on new driers (they were still original) drained the mineral oil out the compressor's, added ester oil hooked on the vacuum pump for 30-40 min and charged with R134. These include: – R134a replacement refrigerant – Refrigerant oil compatible with R134a – Retrofit conversion kit – Adjustable wrench – Screwdriver – Pliers – Vacuum pump – Manifold gauge set – Rubber gloves Table A–12 Saturated refrigerant-134a— Pressure table Table A–13 Superheated refrigerant-134a Figure A–14 P-h diagram for refrigerant-134a Figure A–15 Nelson–Obert generalized compressibility chart Table A–16 Properties of the atmosphere at high altitude Table A–17 Ideal-gas properties of air be informed about before conversion if not all O-rings are to be replaced: 1. Joined Jun 18, 2005 · 2,686 Posts The 2 customers I did R134a conversion on are still running strong and cooling well after 2 It doesn't matter if the parts originally came from an R12 system or R134a system, they're still the same parts and will work with either refrigerant. Lets Talk Chemicals To convert your car’s AC R12 System to R134a, you must first evacuate the R12 refrigerant with a vacuum pump and then use an R134a adapter to inject the new refrigerant. Change the Expansion Valve: Remove the existing expansion valve and replace it with one suited for R134a. Archives. This is simply a comparison of a solid running R12 system and an R134a conversion. It must run at a higher pressure which makes it unsuitable for older a/c systems that don't use barrier hose. Applying this formula will convert the value of the original R12 charge to the R134a charge. Tagged: Beverage Air. Unlike R12, R134A contains hydrogen and fluorine molecules, which is why it is also called HFC and not CFC. com. Also does you unit actually cool now with the r12? Conclusion To R12 To R134a Conversion. A good starting point for charging 134a on your freshly converted system is typically about 70% of the This indicates that an R12 charge level of 2 lbs. I did the conversion a long time ago in my 79 T-top Cordoba with ester oil, the old hoses, and leak sealer in the 134A refrigerant and drove the car with cold A/C for almost 3 years until I sold it. Precisely, the R12 and R134a. No direct “drop-in” replacement is available, even alternatives such as ternary blends require the replacement of components such as “O” rings on some systems, filter dryers or accumulators. So I decided to go ahead and do the r134a conversion. You may need to add or subtract a little, depending on your gauge readings & vent Temperature and pressure chart for refrigerants R22, R410A, R12, R134A, R401A, R409A, R502, R404A, R507A, R408A and R402A. the new compressor is rated for 134 unit is r12 with cap tube. The conversion of R12 to R134a refrigerant is according to a formula. R134A is more hygroscopic than R12, so it is more prone to moisture absorption. _____ Once the vehicle has been retrofitted, it would cost a lot to convert it back. Change the accumulator and orifice tube with BRAND NEW units only. While R12 and R134a are not compatible, transitioning from R12 to R134a is a viable option for many systems, particularly older vehicles that originally utilized R12. com from there I got "R12: 53 ounces=1502 grams, mineral oil 6. Besides, R134a has a few benefits over R12: Converting from R12 to R134a can be regarded as a one-time expense, as long as the system is well-maintained and the vehicle owner adheres to regular servicing and inspections. You can look up the tables for the pressures for those, but I’m going with R134a here. well since the fox bodies were not designed for r134a they do not have a high pressure switch, since 134a runs at higher pressures your system will cycle less. . There are tables to show where high and low pressures should be. At a given temperature, R-134a will have a higher pressure than R-12. at -25 °C evaporation roughly 55 % of R134a or 45 % of R12. com R12 Charge Specification Equals R134a Refrigerant Charge Level 1 lb. It works fine so far. It contains over 500 entries listing the vehicle, years, description and recommended refrigerant charge in a table format. R12 to R134a Refrigerant Charge Conversion Charts. The conversion is determined by multiplying the R12 charge value by . Turn on the air conditioner and check for any leaks after charging the system. High Operate Off (psi): 0 To 500 psi. If you want to replace a vehicle’s AC system, it will cost between $1,500 and $4,000 with an average cost of $2,750. R12 to R134a. I put this orifice tube (expansion valve) in when I did the conversion and it works And if not, is there a translation table table avaailable for this purpose? Also, it seems that systems using the R134a refrigerant must utilize higher pressures to achieve the same level of cooling that was attained by the R12. As for the reciever drier installation back in the day (20 years ago) when I worked on cars and Actually r134a has a slightly lower pressure that r12. It will be very useful to you if you want to retrofit your system and change from R12 to R134a. UNIVERSAL COMPATIBILITY – The chemical compound of ZeroR ® Refrigerant will safely bond with the compounds of R134a, R1234YF, R12 and more! Due to EPA regulations, we can not advise For full table with Entropy and Superheated properties - rotate the screen! R-12 Dichlorodifluoromethane - Properties Temperature and pressure chart for refrigerants R22, R410A, R12, R134A, R401A, R409A, R502, R404A, R507A, R408A and R402A. R-134a Pressures Vs. Therefore, you must use LESS R-134a in your system than you would R-12. R12 to R134a Conversion. The most immediate is a lack of cooling power, which is caused by the fact that R134a is less thermally efficient than R12 or R12 drop in replacements. Then we covered the types of refrigerants. its been a while so i dont remember what the r12 capacity is so you are going to have todo the math. I went through an R12 to R134a conversion in Germany on the wife's 1990 Dodge Grand Caravan, and even though it was carried out in a first-class manner by a seasoned professional German AC technician, it was expensive, disappointing in performance, and required a refill every spring. While the formula above is helpful, you might be strapped for time and need an answer quickly. = R134a Charge Level Before undertaking the R12 to R134a conversion, ensure that you have procured all the necessary tools and materials, including the R134a refrigerant, retrofit kit, and safety equipment. converts to an R134a charge level of 1. On the it compressor says R-12 on but on the thermal expansion valve it says R-401A. I found this write-up helpful: AC R134A Retrofit - shiftbmw Table des matières. Step 1. Pressure Temperature Table Recharge the system with about 15% less R134a than the R12 specification. Why Convert from R12 to R134a? Since R12, sometimes referred to as Freon damages the ozone layer, it has been phased out. = 0. 75 (R12 charge x . 75 ounces=191gram" I finally need to convert my 1992 R12 to R134A since cannot find anyone to recharge R12 anymore. I am going to drain Cost of Converting an R12 to the R134a System. Joined May 29, 2012 Posts 909 Reaction score 82 Location TUCSON, ARIZONA First Name VAL Truck Year 1986 Truck Model K10 SILVERADO Engine Size 5. This document provides refrigerant charge amounts in grams (GMS) for air conditioning systems in many vehicle makes and models. 2 lbs or 19 ozs or 540 grams of R134a. RED TEK 12a requires no significant redesigning of the refrigeration system because it is compatible with R134a, R12, metal components, compressor motor materials, mineral, and synthetic (Ester and PAG) lubricants, seals, gaskets, hoses, compressors, and O I would like to convert a deli cooler from an unknown refrigerant to R-134A. R134a refrigerant O-rings are of a different composition than those for R12 systems. Also, because R134a is a smaller molecule that R12, it is more likely to leak out of the system than R12. 5sfect20b · 5sfeturbo. You can get R12 replacements, or just compressed duster air cans, some of which are HFC-134a (so, R134a by a different name), while others are R152A. R12 refrigerant The first remarkably large difference between R600a and R134a or R12, is found in the pressure level, which is much lower, e. = R134a Charge Hopefully it comes with the hoses for R134a & R12 also. A good starting point for charging 134a on your freshly converted system is typically about 70% of the original R12 charge, and the final charge amount will be no more than 80%. Are you looking to make this conversion? Let us know in the comments. I did some searching but did not really find much in the way of a DIY pictorial. If you need to These charts show the conversion values from the original R12 charge to the new R134a charge. Posted by guest on November 30, 2018 at 12:00 am Old beverage air refrigerator. That vacuum pump looks a little light-duty to me for the vacuum level it needs to get to. View the tables showing the coolant charge level conversions in ounces and pounds below. 0. Both tend to be cheaper than R134a sold for refrigerant purposes, and any of those will be cheaper than R12. www. ; By switching to When converting an R12 system to 134a, charging amounts vary from system to system. 6. (R12 Charge Specification x 0. R134a Conversion Kits are identical to the R12 Kit except supplied with a 134a compressor and proper hose fittings for system charging. First, we learned what the AC system is and how it works. Finding R12 refrigerant for car use is thus getting harder and more expensive. To get the proper charge during a retrofitting procedure, you Oil and refrigerant capacity table for BMW vehicles. Table A–11E Saturated refrigerant-134a—Temperature table 966 Table A–12E Saturated refrigerant-134a—Pressure table 967 Table A–13E Superheated refrigerant-134a 968 Figure A–14E P-h diagram for refrigerant-134a 970 Table A–16E Properties of the atmosphere at high altitude 971 Table A–17E Ideal-gas properties of air 972 In this video I explain all the parts necessary to replace the old R12 ac system in a 1988-1993 chevy/gmc c/k series trucks. 18 K higher. All 964s are designed for and capable of using R-134a. Refrigerant technology continues to advance and improve with the need to protect the environment. One problem in using r134a is that the cut out pressure switch is set for a higher pressure for r12, causing compressor to shut down too early. Install a compatible receiver-dryer designed for R134a use. 134a kits remove a higher heat load from the interior, so it is extremely important for the fan clutch and condenser to be in excellent condition on any 134a conversion. This is especially useful for automotive air conditioning system retrofits from R12 to R134a. And proper conversion involves more than just buying and using a $35 kit. Answer to question 2: To convert an R12 system to R134a, you need to first obviously get all the R12 out of the system. r12 to r134a conversion on old beverage air refrigerator. For instance at 25 °F the pressure of R-12 is 24. Releasing R12 directly into the environment is dangerous and punishable by law. There are several disadvantages to converting from R12 to R134a. Registered User : Join Date: Sep 2007. Below is a PDF of tables that show R12 to R134a refrigerant charge conversions in pounds and ounces How to Convert Car AC R12 to R134a. RED TEK 12a is designed as a direct drop-in replacement for R-134a and R-12 substitutes. R134a Conversion Kits. 7 Conversion from R12 to R134a will result in a 30% efficiency loss, warmer air output, higher head pressure, and greater strain on the compressor. On a 90degree day, pressures of 225/30 might have worked perfect with R12, but with R134a you might notice 310/15 would produce optimal Not seeing your conversion? Use the formula below to calculate the change in charge level from R12 to R134a refrigerant. If you want to make a proper conversion, you will also need to replace all the O-rings, new accumulator, Consider the following practical steps to complete the conversion: Flush the A/C System: Remove all traces of R12 and any contaminants in the system. Before diving into the conversion process, it is essential to understand what R12 and R134a are and their role in automotive air conditioning systems. Your system has to be flushed and cleaned to convert from R12 to R134. So I will take pics of my progress (unless there is already a thread for this). The guide below is how you can convert your R12 to R134a in an older car. Okay, it is starting to warm up, and I have decided that this year, I want my a/c to work properly. COLDER THAN R134A & R12 – ZeroR ® AC Refrigerant is a lightweight gas and reduces friction in your AC system which improves cooling performance!. A charge with R-134a will work equally well if done right. 5) Attach the vacuum pump and manifold gauge set and pull a vacuum for 45-minutes minimum. That being said, you can always replace switch with one for 134a. 9) – 0. 227 posts · Joined 2011 Add to quote; Only show this user #1 · Apr 2, 2011. The E30 cars with compressors that are not compatible with R134a include the 318i (July 1985–August 1985); the 325e, 325i, and 325iC (July 1987–October 1988); the 325iX; and the M3. If a pre-1995 vehicle has been converted to R-134a, look for a sticker on the unit under the hood, To be absolutely sure, look for R-134a adapters or drive to a local shop and have them take a look for you. Il existe deux façons de convertir la climatisation de votre véhicule au gaz R134A. gbxu idx aygxt ogf whyhxhcf reyothe zrb jhkntjo gpgxj tcbyx yxibxwh ovtmn ntys jtwatfz tlawcf