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How to convert r12 freezer to r134a

3. Can I get the pipe repaired and have the system charged with134a, if so does the oil need to be chan … read more Conversions from refrigerants R12 or R134a to R600a is not permitted, as the refrigerators are not approved for operation with flammable refrigerants, and the electrical safety has not been tested according to existing standards either. 2x 12 oz cans of pure 134A (no stop leak or oil) 4 oz of Ester oil if you opt to flush out all the old oil from the system. Both refrigerators and automobiles use R-134a as a refrigerant, and adults can buy it at most automobile parts stores. While you can tout the benefits of a swap to a non-factory refrigerant, the fact is that its benefits of being in an R12 system aren't there in R134a systems. The question on this topic was can I use a 410A condensing unit with his R-22 air handler. Attach the recharge hose to can and vehicle A/C low-side service port. HELPFUL HINTS. Retrofit Kits. Kit Includes: 83834 high side R1234yf 12 mm-F x 17 mm coupler 83934 low side R1234yf 12 mm-F x 14 mm coupler 83633 1/2” ACME-M x 1/2” ACME-F LH thread adapter (2) 83735 12mm-M x 14mm-F R1234yf adapters May 26, 2005 · R134A factory systems work at different pressures and volumes than R12… No matter how much you spend it won’t work as well as your R12 system did. How do I convert it over to cheaper newer R134a? Can this be done without replacing the AC compressor? My truck has an aftermarket in-dash-style air conditioning system, that is still using R12 as the refrigerant. Ian sells the conversion kit with the new compressor. If not change it over, as the cost of R12 is unbelievably high an is no longer in production. Your best bet is to just get it leak checked and refilled with R12 if you can, otherwise you have to clear the whole system out and do the conversion - you can't mix R12 with R134a, and it would be colder with the R12 anyway. Jul 06, 2012 · This video shows you how to convert your vehicle's A/C system from R12 to R134a using an IDQ Retrofit Kit. R1234YF to R134A Adapter Quick Coupler Conversion Kit, R12 to R134A AC Charging Hose Adapter Fitting Connector Refrigerant Can Adapter Valve Tool for Car Air-Conditioning 5. When done, measure the freezer temperature, should be below zero, if not, you have a damaged compressor, probably from contaminated refrigerant or non-compressable damage. s. When replacing R12 with R134a, special care is required. Example: 42 ounces of R12 x 80% = 33. The only additional expense is a $5 adapter you need to put on the low side but the $5 expense is easily recouped because r134a is $8-$10 a can and r134a is about $35 a can. like i said the conversion kit comes with everything you need. 2 -81 23. Ali Khalid Shaker Al-Sayyab. I have an older vehicle that has AC, but it needs a recharge. 5 Apr 2020 When you are looking for a conversion of the R12 to R134a, then it for AC systems, fridges, and deep freezers as a coolant or refrigerant,  Results 1 - 48 of 251 Get the best deals on R12 To R134a HVAC/R Gauges & Probes when R134a Charging Hose to Fridge for Home Use Refrigerator A/C System Mountain 8201 R-12 To R-134a Conversion Quick Connect Coupler Set. I assumed it was a marketing gimmick and really R134 in disguise. Simply screw on the adapter to the can and then r12 r134a sp34e r409a r22 r410a r419a r407c r502 r404a r408a r507 kPa psig kPa psig kPa psig kPa psig kPa psig kPa psig kPa psig kPa psig kPa psig kPa psig kPa psig kPa psig -70 -91 27 -96 28. R12 systems use mineral oil. Re the availability: R12 will be available for the foreseeable future, too much commercial equipment out there that's using it, although it will get progressively more expensive May 23, 2013 · Among these are Freeze-12, R406a, Free Zone, Ikon 12, SP34E, Autofrost, and a few others in addition to R134a. 95 R134a - I have a test kit already so just need the R134a and some oil (included in some cans) - but how much? Nov 20, 2010 · R12 To R134a Conversion Kit. Follow the directions on the can. Why do we need to evacuate an air conditioning system or a refrigeration system? All the refrigeration system are designed to run without moisture and non-condensable gases else it may not work as designed and is likely to fail prematurely. Measure the actual suction temperature leaving the evaporator. I had the AC on my 84 converted professionally. Re: Converting r12 to r134 « Reply #1 on: September 02, 2011, 05:35:23 PM » Check with member JohnieG, He would know , But I think you may just want to try a R12 replacement like Hot Shot. 5 20. engas  of an R134a domestic refrigerator retrofitted with varied mass charges (40, 50, 60 and. Some of the major 3000GT / Stealth / GTO sites despite their size do not do a good job servicing the community. 5 Jan 05, 2019 · “Refrigerant charging” 1. 1. Jun 18, 2014 · A/C repair | r12 to r134a conversion, Leak detection tips, AC gauge & PAG oil injector use and more - Duration: 13:35. You will have to fill the system with 80% of the factory’s specified capacity to accomplish the best cooling experience. When converting from r12 to freeze12; the oil does not have to be drained. Using an R134A gauge set (or an R12 set with conversion), connect the red line to the high-side, blue line to the low-side, the yellow line to the vacuum pump. The system was designed for R12 so the condenser is a bit small for 134A bu it will work Jun 26, 2006 · If r12 is low, why not have dealership fix whatever leaks there are and do the r134a conversion? Freeze is supposed to closely mimic the attributes of R-12 (better cooling than R-134a) and it is inexpensive. The same applies for new installations at medium temperatures, including R134a. Aug 02, 2013 · A/C gauge conversion kits from R12 to R134A. So I will take pics of my progress (unless there is already a thread for this). As mentioned in many earlier posts, our cars were designed for r12 & anything else will require modifications to the A/C system to have it work even close to r12. you just screw the 134 fittings down on to your r12 fittings on your car,and that's it. Jun 10, 2008 · You should know that an air conditioning system converted to R134a will never cool as good as it did with R12. The oil acts as a means of transportation for the refrigerant. That works out to 52 oz of R12. I would say it's around 80-90% cold comparing to R12. R12 uses mineral oil, R134A uses POE oil, not compatible, will cause problems on very small system such as a car or truck. It carries lubricant better, its temperature/pressure curves are better for refrigeration, and it's safer for the environment. i. <P>The A6 GM compressor is plenty stout to handle the increased pressures of R134A, as are the Ford R12 and R134A are very close to same pressure and temp. R134a molecules are much smaller than R12 molecules, and R12 rubber compressor seals will be damaged by Shake can well. Aug 09, 2003 · It's not necessary to convert to 134a. 90% of the original R12 charge quantity e. Such as two sets of refrigerant gauges (one for R12 one for R134a) and a sweep charge and purge by heating the evaporator for 10 minutes. Open both high- and low-side valves. 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%. 96. Hey there, I was quoted $2,523. These charts show the conversion values from the original R12 charge to the new R134a charge. 8 -89 26. as a tech, here's the way to do it. With this large New Yorker requiring about 3 pounds of A/C gas, we are talking about an expensive proposition using R12. jaycsandoval90 0 R134a A/C Manifold Set, 3 hoses (red, blue, yellow) Cans of R134a refrigerant and the tool that injects it in with the gauge and a trigger R12 to R134a fittings from Pep Boys It had R12 in it from god knows how long ago before it stopped working. 5oz freezer Our 550 uses R134A Heat needed to convert one pound zero degree ice to one pound 212o degree steam The point to remember here is even though you added 970 BTUs to the water, the water temperature never went over 212oF (100oC). 00 Retro fit kits you buy at your local Schucks or wherever are not infallable and you usually end up going through a seal here and there, not to mention having to go somewhere with a reclaimer to get the freon purged anyway. R12. engas M30 is designed as a direct replacement for R12 and R134a. This A/C system last worked in the late 1980's. I bought three 12 oz cans on Fleabay two years ago for 90 bucks shipping included Pressure: Temperature : Pressure: Temperature : Pressure: Temperature: psig ("Hg) Degrees F : psig: Degrees F : psig: Degrees F (22)-62. and instead of wasting the R12 i have saved on my car, i can jam someone else for it . Also, they are HIGHLY incompatible with R12-type oil. I had the conversion done a few years ago with new everything. R12 is a highly versatile refrigerant that can be used in wide range of the operating conditions without getting disintegrated. Yet there are reports of HCFC-22 refrigeration systems being converted to R-404A, but without changing out the mineral oil to a POE. As i recall you are close to the time that ford was switching over from R12 to R134a. 0 out of 5 stars 2 $14. original R12 1000 grams, R134a retrofit charge 900 grams. WeFoonLo Air Conditioner Refrigeration R134A R12 Converting Adapter Car R600a Fridge Refrigerant Recharge Refill Gas Top Up Kit 300g Canister Bottle. The experimental results You have no cap tube clog if evaporator is cold. The conversion requires replacing the compressor with an R134a replacement compressor with an oil charge that is tolerant of residual R12. I've run it all winter to keep the seals from drying out and the sight glass in the dryer still shows the ball floating on top so if any R12 leaked hopefully it was not a lot. evacuate the system, recharge to 80% of the R12's charge weight. Freeze 12 is VERY close to r12 (difluormonochloromethane) and is effective. The biggest problem is the difference in the oils used in R12 and R134a systems. Smoking or open flames around refrigerant can cause dangerous fumes. 99 That means a quick boost with Freeze-12 might work. Take that times 90% and you get about 47 oz of R134A. org, The enthusists site for the the Dodge Stealth, the Mitsubishi 300GT and the Mitsubishi GTO. CAN STOP LEAK (1) 4 oz. 99 $14. the system so that it can be converted into alternative refrigerant system. you can tell the difference between the systems by looking at the valve stems used for putting in the refrigerant. Typical 134a charge rate will be approximately 70-80% of the factory R12 charge amount. Report comment Title: Forane 134a Pressure Temperature Chart Author: Arkema Inc. Dec 13, 2015 · Thinking about my last comment it sounded a little dickish. Thing is, its impossible to find someone with R12 as its illegal here north of the border. Also, the NE weather isn't quite as brutal as Tx, Fl, or even southern CA. Lets Talk Chemicals An r12-to-r134 conversion is an r12-to-r134 conversion. Before every year had to add a can of R12, a year later it is still working an blowing cold air. Oil. I would think that its extremely lucky to get 6 months out of a system that was switched. It's important to get good ac readings on high and low side to properly diagnose problems with a vehicle's air conditioning system. 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. E. 99 $14. So the steps involved are cleaning out the old oil, replacing all the O-rings, replacing the dryer, replacing the expansion valve, and converting the high and low side connectors from Schrader to quick connect valves. I dont know why the cost difference between compressors is so huge, though. Measure the suction (return) pressure leaving the evaporator, and convert to temperature using a pressure temperature chart for the system refrigerant. Combining the noncompatible refrigerants R-12 and R134a will lock up the compressor. R-12 to R-134a Air Conditioner Conversion Retrofit Kit. Methods of retrofit of refrigeration systems during transfer from R502 to R404A or R507 are analogous to the methods of substitution of R12 refrigerant for R134a. Air conditioners, refrigerators and freezers rely on the circulation of a Like R12, which is the original ozone-depleting refrigerant, R22 is  So it was decided choose the alternative refrigerant for the R12 which is more The term “retrofit” describes special procedures required to convert an R-12 system to use an autodefrost, topmount, conventional domestic refrigerator/ freezer. Jun 15, 2010 · 2. How to Add Freon to Your Refrigerator: in todays video we are taking a look at how to add Freon to a refrigerator. you don't have to change any hoses. 25 lb. วันนี้เอาไอ้เทา ไปจัดการแปลงจากที่ใช้น้ำยาแอร์ตัวเก่า R12 ให้เป็นน้ำยาแอร์ตัวใหม่ R134a อันนี้ไม่ได้เป็น DIY ของผมนะ แต่รู้สึกว่าโดนคิดค่าแรงแพง OK - reading the posts here, I find that I need the following: O-ring conversion kit $18. The product is the system superheat. I want to convert from R12 to R134. Given two identical vehicles, each with the same weighted amount of refrigerant, the vehicle with the R134a has the “capability” to remove more heat (measured in btu’s) from the vehicle than the same type of vehicle The cost of R12 is around $400 / lb in my area . With this kit, I'm supposed to be able to do the conversion without any problem. On a good day R12 costs start at about $30 per pound. Go down to autozone and by the R134a conversion kit (34. 79 Blue low voltage connector first of all, find the leak. Last year WalMart was $6. 14. You're supposed to have to remove as much of the "mineral oil" from the r12 system as possible by removing the compressor, etc. Ignore your sight-glass. R134 works just fine in a system designed to use R134. Legacy A/C conversion - R12 to R134a Tutorial: Legacy777: Service & Maintenance: 1: 08-23-2014 04:41 PM: Single IDQ 10 or 12 to pair with a DSC4125 @ 500w RMS Bridged for SQ? Mike 01Hawk: Car Audio, Video & Security: 14: 06-02-2010 09:25 PM: Legacy A/C conversion - R12 to R134a Tutorial: Legacy777: Legacy Forum: 0: 05-09-2003 06:51 PM: r-12 to REFRIGERANT REPLACEMENT FOR R12 R134a as the only substitute for R12 refrigerant that GM recommends. The results obtained showed that the R134a absorbed more moisture than R12 at all temperatures. Worse, Most old R12 and R134a compressors have bad seals/gaskets and not just main drive shaft seal buried under the clutch. Lastly, go on to some of the automotive air conditioning sites and read up to get your self familiar with the evacuate and recharge process. I've decided to repair We are thinking of vacuming down the system and trying R12 as that is what the system was designed for. The best replacement for R12 is considered to R-134a. he is part owner of a repair shop and worked for a dealership for a number of years and does a/c work. R134a-Like GWP Level A2L 400-675 A2L 4-6 A1 < 1500 A1 ~600 A2L 150-300 R32 DP: DR7 HWL: L40, L20 HFO 1234yf HFO 1234ze Source : Papers by DuPont, Honeywell, Daikin, Panasonic, Mitsubishi Electric NEDO Symposium 2/17/2010 Japan Purdue Refrigeration Conf July 2010 ASHRAE Jan 2011 R410A R407C 0 500 1000 1500 2000 Feb 24, 2011: US EPA Approves HFO 1- My system was fully recharged with 48 oz of R12 in July of '09. R12 is removed from the system and collected into the ballon for refrigerant collection. g. Ignore the sight-glass. 41. The system can be converted to 134a but compressor head pressures are higher. Subject: Forane 134a Pressure Temperature Chart Keywords: Forane 134a, R-134a, Pressure Temperature Chart, PT Chart, HVAC, refrigeration, air conditioning, refrigerant gas Jul 30, 2018 · Mixing R134A with R12. 99. So I decided to go ahead and do the r134a conversion. Just my opinions. Have a Can you add R409a to R12 or do you have to vaccum out the R12 first? 6 Feb 2010 The best replacement for R12 is considered to R-134a. 2) Flush evaporator and condenser with AC flush kit to remove mineral oil 3) Flush AC high pressure and suction lines to remove mineral oil May 29, 2018 · Evacuation – Using R134a equipment, evacuate the A/C system for a minimum of 40 minutes at the vacuum of -100kPa. com offers 147 retrofit r12 to r134a products. Ester is compatable with both R12 and 134a and is generally used in the systems with blend refrigerants. You have R12, R134a came in '94. engas M10 is suitable for replacement of all R600a refrigerators and freezers. I've found several. If conversion works (r12 to r134a) without having to change any components, other than what is in the conversion kit you can buy or getting a reasonable price from an a/c shop how else do you get your a/c in the older car to work, be it a 10 year old one where enough r12 has seeped out over the years or finding a 60's car with factory a/c. 5 69. Sanden Compressor Installation Instructions Safety Precautions 1. To charge it: Connect to the LOW SIDE ONLY. It's going to reference E32's (7-series 1988-1994), however, the E34 is similar. Mar 13, 2012 · R12 to R134a conversion I checked out John's website and it would seem to suggest about $250 will get you everything you need minus refrigerant. 3 oz of 404A in. (R134a, R600a and R290). contaminated with R40, R12, or R142b. Mar 16, 2020 · How to Retrofit Air Conditioning in Cars to New Refrigerant. Anything that is practical, rational and effective is generally illegal. Get yours online today and pick up in store. When converting from r12 to 134a it is still necessary to remove as much of the original lubricant as possible but the ester oil will mix with the remaining mineral oil. Trouble is, Freon gets a bit more expensive and a bit harder to come by every year. I don't know about yours so If you buy an R12 compressor because it's cheap , having it refilled will far exceed the cost of the 134a system. com. The compressor only draws in low pressure vapor and raises the pressure; compresses it to high pressure vapor. And I know a guy that has a gauge set up for 134 with a R12 adapter for the people that don't want to spend money on retro fittings. Working with Alternative Refrigerants for R12. R12 and R134a refrigerants require different lubricating oils. = R134a Charge LABELS Special R134a service labels that meet SAE requirements are required by law. I did some searching but did not really find much in the way of a DIY pictorial. [Archive] R12 - R134a AC conversion for a 1991 325i E30 (1982 - 1993) 928, R134a Conversion Kit – Basic. I am going to drain the old R12 oil and install the r134a oil in the compressor. Specifications: Product Name: high and low voltage conversion adapter for automobile air conditioner Material: metal + plastic Color: Blue + Red Specification: Blue low voltage 7/16 red high voltage 3/8 Red high voltage connector size: 33*20*20mm/1. com forums > TECHNICAL REFRIGERATION > Trouble Shooting > R12 based systems to R22or R134a system Converting R12 AC machine to R134a. May 13, 2007 · u need to replace piping, dryer, compressor and then fill with 134a. This means less refrigerant will be used when charging systems converted to use R134a . 3*0. R12 TO R134A A/C Manifold Gauge Conversion Kit - $22. This process is recommended simply to ensure that the testing technician knows  There are significant differences between R12 and R134a, which A. These compressor kits can only be used for conversion of R12 systems and only those that are Shop for Santech R12 conversion to R134a adapter with confidence at AutoZone. charge the system. It's R414. I would also recommend a high pressure cut out switch as R134a runs at higher pressure than R12. Get a NEW receiver/dryer, a new orifice tube, an R12 to R134a fitting conversion kit, a multi-pack of HNBR o-rings, 8oz of Ester oil, lots of non-chlorinated brake cleaner, a side can tap, and last but not least, rent or buy a vacuum pump. tank and three hoses. It was reading low so I added two cans of R134a and it started blowing ice cold but the sight glass was still showing bubbles with the AC on high around 1500 rpms. The PO allways fought with it because it allways leaked. R134a systems are unable to be converted to a safety level that satisfies the requirements of international standards set for systems that use R1234yf. July 30, 2018, 9:59pm #21. I don't agree to change it to r134 at this point. 75 = R134a charge). I have a Kelvinator H700P chest freezer that has lost it's R12 gas from a pipe near the compressor. If you do use the R12 gauges, be sure to clean the oil out as best you can. Supposedly you can change over to R134a without changing the compressor but it will not work as well (insufficient cooling). It however has zero compatibility with mineral oil. Mine is still sitting in the box because I have bigger fish to fry at this time. The guy finally showed me a kit to convert form R134a to R12a, which has a moisture remover can, a sealant can, and a R12a can. In Michigan its not as hot, so it is easier. Since R134a is smaller, it will eventually leak out. As R12 used a different oil that was not fit to be used with R134a, the replacement was not that simple. So it's not the best choice when doing a conversion. A1. Apr 04, 2002 · Mike:<P>In doing research last year, I found a site run by air conditioning repair people. This means R134a needs a smaller evaporator, but a bigger condenser. It seems to be cheap, but if done right is quite labor intensive. These R12 to R134a adapter fittings allow for easy conversion of the R12 charge ports to R134a charge ports without having to modify any of the existing fittings or hose. The high-pressure side fitting is on the driver's side by the drier. 10900. Get, "Hot Shot" brand at any appliance parts store. About the price of a 12oz can of R134a. If its still cooling a little, adding r134a to r12, it only becomes an isotope, meaning a new type of refrigerant, which in fact will work. C Suction/bar Ambient temp/gr C Discharge/bar-8,9 1,1 10,0 7,9-6,7 1,2 12,8 8,6-5,6 E 1,4 16,1 9,5 The ideal Pressure for 20 gr C ambient temperatures is 10. 5 R134a 1993 Toyota Pickup converted to R134a fonebone on Sat July 14, 2007 10:15 PM Hi pdrayton- If you can remember the oil capacity that you found in all your research and post that, then bohica and others can have a better idea if you have too much; see if you can find that info! Convert Freon r12 to r134a. 69 shipping . the R12 stem looks like one you would find on one of your tires, the R134a stem is larger, and shaped differently. · Observe all safety recommendations. On this stage the compressor is reinstalled if it has been removed from the refrigeration aggregate for the oil drainage. It may or may not have been changed over to R134 Refrigerant. The Driving Force to Convert to R134a. Being able to measure refrigerant Subcool and Superheat are essential for diagnosing and correcting an air conditioning or refrigeration unit. The extra heat being The A/C system in many older vehicles needs to be converted from R12 refrigerant to R134a refrigerant. 97. Where is the low-pressure filling port? Down on the compressor itself? Do I have to get any additional parts? If so, what part numbers? This Instruction Sheet provides procedures for converting specific R12 refrigerator sealed systems to R134a. Jul 25, 2008 · Hi Iam converting a freezer to freeze dip n dots and was woundering the temps it should be. 92 R134a - 102. This refrigerant is  12 Aug 2016 R-134a vs R-12. You'll need a source of compressed air for this job. 5. 2. It is the rest of the system that will determine if R134A can be used, most likely not unless it is modified. So the serious problem is what to do with the R12 taken out before thinking in inserting the R134A. 4. 8. A wide variety of retrofit r12 to r134a options are available to you, such as alkyl & derivatives, alkene & derivatives. R12 and R134a are the most common types of refrigerant gases uses in vehicle air conditioning systems. "Sincerity, Innovation, Rigorousness, and Efficiency" would be the persistent conception of our corporation to the long-term to establish collectively with customers for mutual reciprocity and mutual benefit for R12 To R134a Compressor Conversion, R134a Compressor, R410A LSS, R600a Refrigerant Suppliers, We are going to wholeheartedly welcome all clientele while in the industry both of those Freeze 12 is an azeotropic mixture. I am getting temps from -37 … read more Re: AUTO AC: Convert from R12 to R134a or FREEZE 12 ?? When I convert an R12 system I take into account what type of compressor the system uses. Then youll want to evacuate the system, which removes all of the remaining refrigerant and the oil, r12 has threaded fittings whereas r134a is a quick disconnect, so naturally you can buy fittings to thread on your r12 fitting to recharge, a standard retrofit will include replacing the receiver drier, as it is near 5 Aug 2019 Because of the versatile nature of R12, it quickly became a refrigerant that used in air conditioners, refrigerators and freezers. We have an old deep freezer that we need to break apart in order to get it out of our basement. Yes. Maintenance/Repairs. Charge R-134a refrigerant From serial #M/P1184140 to #M/P1184239: 10. Jun 27, 2018 · I have some questions about the conversion from R12 to R134a and how to get the most out of it. The box inside the car turns on and blows air that seems a touch cooler than ambient and then warms up a touch. 9 -83 24. Blows cold (not R12 cold, but cold enough) but twice now when I've had the thing out on longer runs (picked the wife up at the airport in it last weekend - about 70 miles roundtrip) the evaporator has frozen up. Basically, DO NOT(!) convert your R12 car to R134a or any of the R134a-based refrigerants (FRIGC comes to mind). Most shops recommend to convert to R134a and find leak, The conversion kit consist of a few adapters. While charging, rotate can between 12 o’clock and 3 o’clock every two to three seconds while continually agitating (shaking) the can back and forth. No point in refilling it if u lose it immediately. remaining R12 and air and moisture out of the system. I tried Freeze 12 some time ago and it killed my Sanden AC Compressor Converting R12 system to R134a - Page 3 Be sure when charging the AC system that you use about 5% less Freon per volume due to the change to R134a. I have the conversion fittings, R134 and hose. 95. We know it has no R12 refrigerant and the hoses are shot and need to be replaced. I would keep the R12 system if all of the ac component is still working or convert to R143a. r134a & r12 refrigerants use different oils. 3 v-6 and dual evaporators (front and rear). 9) - . Both Low Side and High Side R12 Charge ports may be 7/16". Of course, that was from a dealer, so take the price with a grain of salt, but BMW service bulletin B 64 05 96 states that the OEM E30 M3 A/C compressor is NOT/NOT compatible with R-134a and must be replaced with part number 64 52 8 363 550. One difference is pressure, and R134 works at a higher pressure than R12, which is hard on the seals when you convert from R12 to R134. Installed R134 & ester oil at 80% of R12 capacity. Whether you need to convert a Ford, GM, or MOPAR classic from R12 to R134a, two helpful tips to keep in mind…. Freeze 12, R12, R134A A/C, Recharge Kit, For Converting R12 to Freeze 12, F1 FREEZE 12 RECHARGE KIT R-12 REPLACEMENT (3) 12 oz. CAN OIL CHARGE (1) Freeze 12 CHARGING HOSE (Freeze 12 Connections on both sides) FREEZE 12 STICKER Freeze 12 T Aug 18, 2011 · My 90 convertible still has R12 and it was low on freon and I was going to convert it to R134. Bleeds off excessive refrigerant pressure in excess of 400 p. That's R134a only and does not count the oil charge, which is a separate item. But a person could have put a different refrigerant in like freeze 12 or some other shit. It can be used for recharging refrigerant, or to diagnose an a/c system based on pressure readings from your gauges. May 21, 2015 · R134a has lower condensation temperature/ higher pressure, but also a lower a evaporation pressure. For one thing, Most R12 hoses and seals have problems after ~ 5 to 10 years let alone 30+ years. Jun 08, 2005 · I have no desire to change over to R134a as I know its a lesser freon. I pulled it up not really knowing what to expect. Take the cap off the valve and push in the pin to release some gas. Now I read it should be around 30oz +/- 1. Details about Convert a Freezer to a Refrigerator Thermostat Beer 0576. Dec 22, 2007 · Dougflas on Thu December 27, 2007 10:17 PM . 99 + $1. It's generally accepted that one cannot effectively remove all the R12 mineral oil from a compressor that has run it. AU $36. i have seen people change these over and not vacuum them down and they work better Jul 30, 2016 · R12 R134A conversion STC 's. You can just drain the system from the r12 to the 134a but you will run into the risk of the system failing cause the two refrigerants dont like each other and can become sludge over time. I would like to know what's involved in converting this vehicle from R12 to R134a. Charging – Charge the A/C system with R134a to approx. 4 lb of R12 and 10 oz of oil. Apr 30, 2003 · r12 vs r134a Bottom line, 134 doesn't blow as cold as r12. BurnoutsAndRotorblades 23,572 views 13:35 A reader reached out to me today and told me that I had to watch a YouTube video. 76, pp. Re: How to convert from R12 to R134 on a 69 Camaro « Reply #1 on: July 27, 2009, 01:03:37 AM » I'M NO EXPERT, but i talked to a friend about this same thing for my '67. Seems to work great. alternative refrigerant for R-134a and R12 for domestic refrigerators. ( It still works but the lid is broken. I put in some freeze 12 and it works fine, I know that some people say it will killl the system but if it will be converted in the future then it was cheeper to go the freeze 12 route. HCs Energy Conversion and Management, Vol. Pay particular attention to the R12 fitting size you have while ordering. Hi, I got 92 LS400, the AC has a slow leak, I recharged R12 last July, and it is empty now. CANS OF FREEZE 12 NON-FLAMMABLE & NO CFC'S (1) 4 oz. Replace any O-rings with 134a compatible. This refrigerant is suitable for domestic and commercial freezers and transport refrigeration. some people will vacuum the old system out,and some will not,just depends on who you talk to. , it can be done bye recovering the 410 out of the condensing unit, and changing the high and low pressure switches to operate for an R22 pressure, and use r407c refrigerant. You'll have to forgive me but I'm not 100% sure of the name as I use my remaining R12 for my fleet. R12 is hard to come by here in NE, while R134a is plentiful, cheap (so far), & doesn't require a license to purchase. Do I have to change the compressor oil and replace o-rings , drier , txv valve ,etc. I don't really want to stir up the can of worms, and debate R12 vs R134a, I also don't really want to debate the value of having AC in the first place or not. So, since I had a fair bit of work to do on it anyway, I decided to convert the A/C system from Freon to R134a, a more modern and environmentally friendly refrigerant. Jun 28, 2005 · The text book answer for refrigerant charge is 80% of the original R12 charge. The R134a just doesn't seem to cool as well, and in So Cal SFV summers, one needs all the cold you can get. High side and low side adapters to convert your fittings from R12 to R134A. Apr 26, 2018 · Here’s how to convert R12 to R134a with the factory method 1) Discharge the R12 and recover the R12 for recycling. Most newer 134a systems use PAG oil. The crossover point is approximately at 64°F. BassnTruck · Registered. Hi, I want to convert my 1992 VR4 A/C from R12 to R134a and my question is; I know I have to replace the condenser but do I need a later (1994 on) condenser or can I use a new 1991-1993 condenser. At this point the tank, the manifold, the yellow service and blue low side hoses are evacuated. in the The Leader In Automotive Air Conditioning. Retrofit from R12 to R-134a and recharge car A/C with this complete solution from EZ Chill®. R134a is the leading replacement for domestic applications and is being installed in newer refrigerator/freezer models. Discussion Starter • #1 Jul 07, 2016 · The R12a refrigerant from Red Tek is about $12 a can, and even cheaper from other vendors, so I don't see any mega-$$ R134a conversion on my rig's future anytime soon. May 05, 2020 · R12 to R134a Conversion. 5 – When converting an R12 system to 134a, charging amounts vary from system to system. R134 cannot carry R12 oil through the system. It was designed for r12. The same applies to conversions from refrigerants R22, R502, or R134a to R290. An ! R12 to R134a & R134a to R12 TANK OR VACUUM PUMP adapter set. 21 Nov 2014 Retrofitting AC systems is something that has been done for many years now. It uses the older R12 refrigerant and it is very expensive and can be difficult to locate as it is not made in the US anymore. Sadly converting is Not as simple as most YT videos and other claim. Gregoriou Brothers Refrigeration Since 1979Frosty-Freeze R12 to R134a Tank/Vacuum Pump Adapters, 1/4FMF x 1/2 ACME-M & 1/2 ACME FM x 1/4M The ultimate R134A & R12 adapter set! Brought to you by A/C. Freon was replaced with the more environmentally friendly R134a gas. 9 -74 21. ) The oil used in R12 and R134a are different and not compatible. Start engine and set A/C on MAX COOL. The reason is that the R134A runs at a higher pressure due to the size of its molecules being smaller when compared to those of the R12. Shop with confidence. 2pc High Low Side Convert R12 to R134a Adapter A/C Quick Fitting Coupler ELBOW. Do you know anything about the product Freeze 12 they tought it as a better replacement for R12 than R134. Charge with 134a between 70-80% of the original R12 charge amount. . In some cases extra capacity will need to be added to the system to achieve desired cooling, such as a cooling fan or larger condensing unit. 3/8”-24 BLISSFIELD/TECUMSEH/YORK STYLE — COMPRESSORS Posted on 6/3/2019. It seems as it was only yesterday that they said R12 is bad, and R134a is good, and know they are changing their mind again. About 33% of these are hydrocarbon & derivatives. You need 4. If an older car had diminished cooling I'd either spend the $20 for EPA 609 certification and pick up a can off Ebay, or top off/convert to a hydrocarbon refrigerant. Converting to 134a - Ford Until 1995, most cars with air conditioning used R-12 Freon refrigerant that is said to have a negative side effect of damaging the ozone layer and is no longer produced in most countries. Changed o-rings, valve cores, etc to convert. Description: MKChung Car Retrofit 7 16 To 3 8 Conversion Adapter R12 To R134a High Low AC Fitting Reviews. Here's the way I see it. Bleeds off excessive R12 pressure in excess of 400 p. The two refrigerants are not compatible. For farm milk vat refrigeration systems with evaporators constructed into the floor of the vat, the currently accepted method of conversion from R12 to R134a requires approximately three ester oil flushes while operating on R12. It's ridiculous to say "Well we did the conversion and it went fine but the A/C isn't cold. Therefore, R134a systems will be more prone to rusting and copper plating due to large moisture content in the refrigerant. My ac hasn't worked in years. I call different shops and have these options: 1. Any tips or tricks would be great. That 970 BTUs was the energy necessary to change the state of the water from a liquid to a gas (vapor). PAG oil is a synthetic oil. you can charge with r134a also used in dusters and air horns . To the best of my understanding, once a former R12 system is converted to one of these approved refrigerants, later conversion to propane or other hydrocarbon refrigerant no longer constitutes a conversion from R12. I have a control system with temperature probes, a relay to control the compressor, and pressure pads to measure and relay my beer levels out. Scales that measure only in ¼ (. 5) ounce increments - charge the system to the next highest quantity of R134a. Pressure/ temperature plot of R134a vs. Porsche 928, All Years; The Kuehl Basic R134a conversion kit includes Apr 14, 2017 · Re: R134a to R12 conversion « Reply #18 on: April 18, 2017, 09:04:07 AM » Later 80's and early 90's seemed to be when GM has a lot of short lived evaporator cores. Their formula is: (R12 lbs x . Does an While I posted info about R134a conversion, staying with R12 is certainly something you should seriously consider. Yes, Freeze 12 is flammable--so is gasoline. It cools better in R12 systems because the blend brings the pressure curve of R 134a closer to R12. 0oz freezer. Only EPA certified technicians can buy R-12. Removal of R12 refrigerant out of the refrigeration system and its utilization. Locate a chest freezer near to the car (e. Ken Knudson, 30 years in refrigerator safety/energyefficiency compliance. Griffiths’ 928, R134a Conversion Kit – Basic includes all the basic items you will need to convert your 928 from R12 to R134a refrigerant. The A/C is still working today, although probably due for another  Before 1995 most vehicles came with R12 refrigerant in the air-conditioning system. You should vacuum the system for at least 45 minutes once the vacuum gets to ~29. Use this model kit if you already have a new drier. It definitely is worth the conversion over to R-134a, the lowest it drops in temp is 45*F. About 18 months ago I charged the system on my parents 88 Mustang using a product I think was called Mr. 3 -74 21. If you have 134 fittings chances are you have 134. since then, the industry standard has been R134a, which is an efficient replacement. It is definitely not as cool as the old R12 was, but so far it is working fine. 7 oz of 134A in it and I think they told me to put 3. When all that is done successfully you can . To start with, you say you want to sell it. When done, close the VAC valve, disconnect the pump and black hose from the manifold. 25) or ½ (. R134a isn't as efficient as R12 so and additional electric fan on the condenser is a great addition. So converting to a R134a to R12, typically the evaporator will be larger than needed, no big deal there, but the condenser can be smaller than needed and that can be a big deal. The conversion is determined by multiplying the R12 charge value by. Parts are just part of what we do. Jun 14, 2009 · Re cost of R12: in the amounts that your system uses I agree with Jim, lots of R12 for the cost of conversion, especially if you have a new R12 compressor and hoses. 95 Receiver Drier/Accumulator $15. My Caddy w/ R134a from the factory can't compete. Did not have to change anything, evacuated system, added a can of oil in kit and the Freeze 12. Convert AC to R134a or keep R12? Aug 4 th, 2016 at 11:35am Print Post : Looking for opinions. 84 for a "proper" R-134a conversion, which included a new compressor (among other parts). In both cases, conversion was relatively easy, requiring a new or rebuilt (a quality rebuild for sure) compressor, a new dryer, and a new orifice tube/valve for R134A. Whether you agree or not, it is not an EPA approved refrigerant for use in a r12 system. Empty the 12 from the system. R12 to R134A Conversion There are two ways to convert the air conditioning of your vehicle to the R134A gas. You can't just refill an r12 system with r134a. Jump to Latest Follow 1 - 18 of 18 Posts. By jaycsandoval90, November 20, 2010 in 1988-1999 Chevrolet & GMC C/K GMT400 Platform. Oh You often can do this but not under $50 to $100. New o-rings (standard viton o-rings work great). Any shop equipped to handle R12 should be able to handle you. The cost of converting it correctly will be a lot more than the cost of r12. There's a simple rule in the industry that HFC-404A refrigerant needs to be used with POE oil. Jun 06, 2018 · I'm going to convert the ac from R12 to R134A. I edited my post to say 70% to 80% of R134a in a converted R12 system. There is, however  12 Jun 2012 PROCEDURES FOR EXTRACTING AND TESTING R134A REFRIGERATED GAS CYLINDERS . The main reason for going to the conversion was the prohibitive cost of the R12. There are several disadvantages to converting from R12 to R134a. 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. If you want to convert to R134a, here's the conversion page. In a system with a rotory compresser I use R134A, with an upright 2 piston (york style) compressor I use a product like freeze 12. R12 is shown in figure 1. Find leak with R12 and die then fix later. One is the factory method, where you would need to replace the AC parts, and the other is to modify the existing components to use R134A. 0oz refrigerator, 9. Evaporators and condensers "can" be flushed of The molecule size of R134a is smaller than that of R12, so there was concern that R134a could leak out through the hoses and flare fittings that R12 systems used. I know I have to change my compressor but do I also need to upgrade my rubber hoses? Thank you for your help. 5". Do I need to replace any components and do I need to flush the remaining - Answered by a verified Chevy Mechanic We use cookies to give you the best possible experience on our website. R134a requires more gas volume than R12 did, converted systems do not have the capacity to allow enough gas volume for it to work the way it did on R12. Jan 13, 2018 · R134a Pressure Gauge Chart This chart details how ambient temperature correlates with the system refrigerant charge pressure, and how it affects high and low side psi readings. The seals are different and will fail. Anyhow, I'd say if the dealer did the conversion then the dealer needs to figure out how to make it cold. Now some of y'all have me worried about the long term consequences, but after looking into the R12 thing it just seemed like too much of a hassle. Fits these Applications. 6 ounces of R134a. They are far less efficient than R12 and R406A, GHG-X4, etc. the system needs more heat taken out to run as cool). Start new topic; Recommended Posts. Aside from the safety aspects, although the two refrigerants have similar May 08, 2020 · R-134a Recharge Hose Adapter allows the safe use of older, piercing style, A/C recharge hoses with R-134a cans that are fitted with self-sealing valves. Joined Feb 7, 2007 · 4,631 Posts . I hope this is the right place for this post and that I'm not beating a dead horse I have a 1990 Plymouth Grand Voyager with 3. Affix labels to the vehicle showing conversion status. Note: Hot gas valve will need to be adjusted during the charging process to properly adjust the low side by-pass pressure to 20psi. I am happy with the stuff. It definitely surprised me. By the way, I think modern freezers in the UK are using R600a instead of R134a these days: "Manufacturers are gradually turning over their fridge ranges to incorporate R600a, a more environmentally friendly refrigerant than R134a. If the o-rings and seals are replaced with r134 compatible ones then there shouldn't be any problems excetp reduced cooling capacity since r134a isn't as efficient. IMHO, do not waste your time with a R134a These are including; replaced the compressor, dryer, and all O-rings then have the shop pulled the vac for 45 minutes "$23", drove it home and refilled the R134a. An R12 to R134a refrigerant conversion chart is a tool used to properly recharge or convert a vehicle air conditioning system based on the refrigerant type and operating conditions. R12 to R134A Conversion Quick Connect Coupler Kit, High/Low Side 90 Degree Angle Quick Coupler Manifold Gauge Set with R134A 1/2" Female x 1/4" SAE Male Tank Adapter $12. Be aware that air bags can be deployed accidentally. During the test domestic refrigerator ” Energy conversion and management, 46,85-100 , 2005. One thing else to consider, especially in an older vehicle, not worth putting a lot of money in. 79 a can. Also, because R134a is a smaller molecule that R12, it is more likely to leak out of the system than R12. Aug 25, 2017 · R134a requires a different size dryer to make sure it functions properly so you will need to install a new dryer to convert R12 to R134a. A/C R12 to R134a conversion help please Welcome to 3sgto. Re: Converting from R12 to R134A (Phatbastard) 10-22-2008 05:15 PM #7 Everything works fine, it it is just in need of a charge. R134a systems operate at higher discharge-side pressures than R12, which can cause compressor seals to leak. There are sythetic alternatives, there is still a lot of R12 out there, or you could convert to r134a correctly. Above this Converted R12 equipment should be clean of. Recommended: Install hi/lo pressure switch. Is there a substitute refrigerant (like FR-12 or Freeze12) that can be used to top off an old R12 system? What is involved in converting the unit to R134a? R12 systems converted to R134a do not work well. Since my shop stocks all current freons (mainly R134a, R22 and R404a), I can get it at cost, especially since a full cylinder of R134a would cost me here $193 CDN. R404A and R507 refrigerants have good compatibility with polyester oils. At that point, you might as well convert to R134a…Enter “R12” in the search window of this board for a complete list of former discussions on this subject… Whether R134a performs as well as R12 in any given a/c system depends upon system components and the amount of R134a used. CAN I CONVERT R134a SYSTEMS TO R1234YF? No. There is plenty of r12 available particularly on ebay. there is 3. Your daily experience working on a variety of cars and trucks is far greater than my limited knowledge of just the Porsche 924S/944 and my '98 Cherokee. One refrigerant we used to work with on walk in freezers, was r502, which was in fact an isotope of r12 and r22 Sanden AC Compressor Converting R12 system to R134a - Page 3 Be sure when charging the AC system that you use about 5% less Freon per volume due to the change to R134a. The R12a cans use the same taps as the R134a cans and the supplied hose has R134a compatible fittings on both ends, so R12a can be used to recharge R134a systems too. Have any of you successfully converted from R-12 to R134a. I looked into the Freeze 12 stuff, but I don't think there is anyplace around here that has it or can charge a system with it. Apr 14, 2013 · In addition, the factory system was set up to use R12 coolant, otherwise known as Freon. Includes All Conversion Parts NOTE: For Actual Image Of A/C Drier Included In This Kit, Please See P/N 25-102228-1 This kit includes a remanufactured compressor which will operate with R134A Refrigerant, a drier, an evaporator orifice and the oil, seals, fittings and adapters. 4750. It has unusually high potential to cause the depletion of the ozone layer in the upper layers of the atmosphere that causes the greenhouse effect. Are there any stc's or conversion kits to change from R12 to R134A for a Bonanza 30 Jul 2016, 22:50. If your air conditioning is no longer cooling as well as it once did, then  household refrigerator has been designed originally to works with R134a. Our Retrofit Kits will update your older vehicle’s refrigerant from R-12 to R-134a, making your system cost-effective, colder and environmentally friendly. This is one of the reason why you can not just replace an R12 system with R134a without replacing the rubber components of the system. R134a systems are not designed to operate using a flammable refrigerant. on the air-conditioning system as a direct result of the conversion to Engas M20. they coagulate if mixed. We are the creative, innovative leaders in technology, delivering products and capabilities as HVAC systems experts, manufacturing products of ever-increasing quality and efficiency through continual improvements in our processes and products. Do some more shop hunting, see what comes up. Jun 06, 2009 · I did a conversion from R12 to Freeze 12 on my 91 4runner, got it off of Ebay. If they don’t sell R12 in your state anymore drive to a state that still sells it and/or look at a different coolant substitute other than R134A… R12 - 120. As for the Pinto, when you look at actual incidents of fires, the Pinto was less flammable than many other cars of the period (it placed roughly mid The original shop manual says to charge the system with 3. 3. R12 is still available, however, it is $$$. Always remember to consult with your refrigerator technician , in this video a certified licensed specialist worked on the fridge. Check out our Other Items! Check Out My Air conditioning Items COMBINED SHIPPING POLICY: If you purchase multiple items and wish to SAVE Some R12 compressors can be adapted to work with R134a by changing the seals, fittings and a few other parts inside it. Locate the low-side and high-side A/C service I have a 24-year old General Electric refrigerator. 4 Nov 2018 How do I convert an R12 air conditioning system to a 134a system? There are conversion kits that can help as well as conversion calculators online  This will complicate the future servicing when R12 refrigeration systems are to be changed over to R134a refrigerant, as it is difficult to prevent contamination by residues of the original refrigeration oil, typically mineral oil or alkyl benzene. I probably should have stopped there but of course I didn't. It was made to be a direct substitute for R12. The video is a do-it-yourself guide on how to convert your vehicle’s R-1234yf system over to R-134a. If an OEM retrofit procedure is not available, Sanden recommends the following procedure: Sanden Procedure for Conversion from R- 12 to R134a. R134a is an easy retrofit. Most A/C repair shops can get r12. i think propane? the oils and the freons are not compatable. R12 TO R134A Tank/Vacuum Pump Adapters, 1/4FMF x 1/2 ACME-M & 1/2 ACME FM x 1/4M - $12. In this case the its 20% 142b and 80% R-134a. R134a is roughly 9$ per lb. 00 Molecules of R134a are smaller and lighter as compared to R12. This video shows you how to convert  19 Aug 2017 My 1993 Buick Park Avenue was converted to R134a before I got it, 9 years ago. Close the LOW R134a coupler. Includes 3 cans of High Mileage R-134a with Oil and “How-To” CD. They say to charge it as a liquid (turn the can upsidedown) and use 20% less R414 than R12. Also, the vacuum pump has to run for at least another 1/2 hour to get all the. I want to convert my motorhome's a/c from r12 to r134a . Department  R134a Charging Hose to Refrigerator, Can Tap with Gauge - R-134a can to port for easy conversion; Gauge has three scale readings of R134, R12 and R22   5 Sep 2017 R-134a is an HFC with no ozone depletion potential, but it doesn't work as well. Freeze. Since then, the EU has banned this gas because of its ozone layer destroying properties. Optimum Refrigerant Charge of Refrigerator. Aug 25, 2011 · Wow thanks, didn't even realize that the "R12" was referring to a refrigerant type. Refrigerators manufactured from 1995 to the present typically use R-134a, an HFC, as a refrigerant. You get both!!! With the shortage of Hence the perception that R12 is colder. 99 $ 14 . Or can I get away with just using one of these new blended refrigerants you se&hellip; How can I convert the same system to one which can work with R22 or R134A:confused: R12 based systems to R22or R134a system [Archive] - Refrigeration-Engineer. If you've need to make a major repair to your car air conditioner such as installing a new evaporator, compressor or condenser, then you can easily update to new refrigerant at Alibaba. Re: R600 compressor??? or how To Convert it To R134a? leave it on 600 you can get comps out of a wholesaler always change the drier with r600 we have found 23-01-2011, 09:45 PM #5 I had mine converted over to R134a last summer after a couple months of no air conditioning. Any othe ideas as to why the R134 wont work. All, My 1964 GT Hawk has factory AC. The   Convert to r134a The controversy over the environmental issues of R-12, ( dichlorodifluoromethane, or CCl2Fl2), has been in the news lately. 5lbs of refrigerant. Can I save an old R12 freezer? Some back story: I am building a kegarator out of an old Gibson chest freezer (circa 1991). Subtract the Converted Temperature / Pressure from the actual suction line temperature. I went to a local highly-recomended automotive AC shop to get an idea what its going to cost to convert it to R134a, since my current system leaks out all the freon in about a year. I replaced the old R12 compressor with a gen3 R-134a compressor, new receiver/drier, new expansion valve, flushed condenser and evaporator with acetone to rid of most old mineral oil and filled with new ester oil and a set of R-134a service valve fittings. Sanden AC Compressor Converting R12 system to R134a - Page 3 Be sure when charging the AC system that you use about 5% less Freon per volume due to the change to R134a. Same goes with the receiver/dryer. 470. tom418. Evacuate the system - i. EPA is not involved anymore with r12 or 134 or 123. Some ignorants just cut the high pressure pipe near the compresor and hear R12 fly. During the last backwashing, R12 is substituted for R134a. [3] studied the possibilities of using R134a and some binary mixtures of R22/R134a as alternative refrigerants to R22 for a vapor compression heat pumps. Jun 22, 2013 · As far as refrigerants go, Propane is superior to both R12 and R134a. I went ahead and added another can for a total of 36oz. 75 (R12 charge x. What are the best refrigerants to replace R404A in existing low-temperature applications? In new low-temperature systems, we recommend hydrocarbons such as propane (R290) or isobutane (R600A), depending on the refrigerant charge needed. I'm asking because I need a r134a recharge, or possible system work, and haven't done it yet, and am thinking about going back to R12, if possible and practical. 38 R134a Freon is an oxymoron, Freon is R12 but the answer is yes, a subtle 'sweetish' odor Open the VACuum and LOW valves. The other two refrigerants that are considered good replacements R134a isn't as efficient as R12 so and additional electric fan on the condenser is a great addition. Feb 27, 2014 · R12 to R134a A/C conversion. Oct 12, 2013 · R12 replacement compressors use alkyl-benzene oil. The gauges will be OK, just the hose fittings are different. I'd like to get the AC working and converted to R134a (or whatever the modern kits use) but Easily convert any R134a manifold gauge set to a R1234yf manifold gauge set. repair the leak(s) change the drier/accumulator, add the proper amount of ester oil, remove the old schrader valves, screw on the R134a adapters. Before 2001, vehicles used an R12 refrigerant gas known as Freon in their air conditioning systems. I've done the conversion on several vehicals including an 86 crew cab GMC and a V8 S-Truck 4x4. 99) and follow the instructions. Nov 04, 2018 · I have converted two vehicles from R12 to R134A, a 1974 Monte Carlo and a 1978 Suburban. However, even this is being phased out and replaced by the safer R1234yf gas. 3/8”-24 5684 (R12 & R134a) Compressor Pop-Off Valve for York/Diesel-Kiki CH Series. R134a refrigerant is about 10% less efficient in removing heat than R12. New receiver/dryer (should be replaced whenever the system is opened and exposed to the atmosphere). Jun 13, 2009 · Condensers on some cars originally set up for R12 are undersized for R134a, causing lackluster cooling when converted. It doesn't have the extreme hydroscopic tendencies of ester oil. The $70. Bottom line, R134a simply doesn’t cool as well as R12. Recharge the system with about 15% less R134a than the R12 specification. -----1983 Mercedes 240D on R12 and WVO! 1192 Mercedes 300D 2. 99 Get it as soon as Fri, Jul 10 A/C conversion It's hard to do a detailed step by step on this. I assume this is a blend refrigerant, they do not sell R12. Unbelievable-gotta-turn-it-down type cold (it's an R12-to-R134a conversion). Thanks for correcting me. Unfortunately, there is a lot of misunderstanding as to what exactly Superheat and Subcool actually are and even less understanding on how to measure it. It's the same basic procedure on any car. Karagoz et al. The york style compressers are harder to hold the gaskets on, and Apr 05, 2020 · So, there is also a specific amount of R134a needed, and since it is low density than the R12, you would have to convert the charge weight to get the proper one during the retrofit process. Find great deals on eBay for r134a to r12 adapter. 99 $ 12 . 79*0. e. Whether or not it actually destroys the ozone layer is not discussed in this article. $4. From my research the compression is higher with R134a as compared to R12. R12 Freon came installed in your 1991 Chevy. But if you're absolutely sure you only have R12 and nothing else, I don't see the problem. At its optimum a 134a retrofit will only get the cold air outlet temperature to within 3-5 degrees of the R12 system. But R134a should never be introduced directly into an R12 system or vice versa. It can also be cheaper to convert to r134a than to keep r12. The system simply isn't designed for the newer stuff and the seals will leak out the R134a much faster as it is a smaller molecule than the R12. 0oz refrigerator, 11. once you do that then the new 134 fittings are quick connect fittings,then you just use a 134 hose on the low side to put the freon into. May 09, 2003 · Oil. That's about 2 1/2 cans. R134 appealed to me because if the system has a small leak, I could just add a can of cheap R134a every year. From reading the comments in there and also having a friend that worked for a major air conditioning parts manufacturer here in North Texas back before R134A replaced R12, I'll make the following comments. 384. The last piece of your system that you’ll need to change is the pressure ports to convert R12 to R134a. It is not so much as the condensor is too small but R134A is less efficient as R12 (I. There are other products on the market that are compatible with R12. 30 Jul 2016, 22:39. In 1996 systems were switched over to R134a from R12  6 Jul 2012 The A/C system in many older vehicles needs to be converted from R12 refrigerant to R134a refrigerant. There is someone out there with R12, I'm sure! May 23, 2013 · The only serious problem is enviromental , because although 134A is ozone safe , R12 IS TERRIBLE. Maybe the compressor is bad and the R12 is all still in there, I do not know. Chuck May 03, 2015 · The performance of an R12-to-R134a converted system will never operate as effectively as it did on R12 because of the differences in the properties of the refrigerants. We sell AC manifold gauge sets and also the conversion kits so you can make use of an old R12 (R22) gauge set that is just sitting around. It’s worth noting that, if your existing R12 system is in good working order, leave it If you have the R12 fittings chances are you have R12. If you detect no pressure in the system, repairs will be necessary before any refrigerant can be installed. This video shows you how to convert your vehicle's A/C system from R12 to R134a using an IDQ Retrofit Kit. 70g) of R600a HCFCs R11. com forums Refrigeration-Engineer. No need to change the compressor oil or do anything else to the AC system. That means its a refrigerant made up of two different chemicals that do not mix. r134a does work but may not as economical you may not get as good of a cost per btu from it. The basic steps listed in the video are: 1. The drawback is if you have a slow leak over time the mixture doesn't leak evenly. R12-To-R134a A/C Manifold Conversion Kit This Kit Includes Everything You Need To Convert your old R-12 Gauges To R-134a Includes R-134a 90 Degree Quick Couplers And Adapter For R-134a Refrigerant Tank. A properly charged 134a system will likely show bubbles in the sight-glass. R134a systems are designed with parallel flow condensers, expansion valves (in the case of the 300M) designed for R134a (not R12 or R12a) pressures, and a swash plate compressor built for Freeze 12 is just R134a with. this is what he said: Retrofit 7/16 to 3/8 Conversion Adapter R12 to R134a High/Low AC A/C Fitting Set. how to convert r12 freezer to r134a

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