Can I use R12 compressor with R134a?

Published by Charlie Davidson on

Can I use R12 compressor with R134a?

R134a systems operate at higher discharge-side pressures than R12, which can cause compressor seals to leak. Bottom line, R134a simply doesn’t cool as well as R12. The advantage of ester oil is that it works with both R12 as well as R134a, so you can fill the system with it and then use either refrigerant.

How do you convert a refrigerator from R12 to R134a?

The conversion is determined by multiplying the R12 charge value by . 75 (R12 charge x . 75 = R134a charge).

When retrofitting a system from R12 to R134a what is required to be done?

Sanden Procedure for Conversion from R-12 to R134a Recover all R-12 refrigerant from the vehicle’s A/C system. Evacuate the A/C system for at least thirty (30) minutes to a vacuum of 29 in. Hg, using R-12 equipment, to remove as much R-12 as possible from the residue mineral oil. Remove all R-12 service equipment.

Can you replace R134a with R12a?

It’s illegal to vent R134a into the atmostphere! You don’t just blow it out! Just adding R12a to a 134a system doesn’t work very well because a 50/50 mix is very inefficient. If you don’t have a vacuum pump, you can still make it work though.

What happens if you put 134a in an R12 system?

R134a systems work at higher discharge-side pressures than R12 systems, which could lead to compressor seals leaks. Additionally, since R134a is composed of much smaller molecules, it has a greater chance of leaking from an R12 system.

How do I know if I have R12 or R134a?

To tell if it has been converted you can look for a sticker on the unit under the hood, which would indicate that it is R134a. And you can also look for R134a adapters, which would be located on the charge parts.

What happens if you put R134a in a R12 system?

Can you convert R22 to R134a?

If you have a home or auto air conditioner designed to work with R22 refrigerant and the system needs a recharge, a number of issues prevent the direct substitution of R134a. R134a has a lower thermal conductivity than R22, so an R134a system needs a larger heat exchanger.

Is 12a better than R-134a?

HC-12a provides better cooling than an R-12 system retrofitted to R-134a, with much greater energy efficiency as well. Unlike R-134a, HC-12a is completely compatible with the hoses and oils used in R-12 systems, making the conversion much easier to accomplish.

What refrigerant will replace R-134a?

Honeywell’s HFO1234yf refrigerant has been developed as a replace- ment for R134a, and has already proven its effectiveness in several bench tests and field tests in terms of energy efficiency, environmental benefits, safety, performance and ease of adoption.

How do you tell if you have R12 or 134a?

when new,it was r12. if it’s been changed over,look at the hi and low side ports. see if 134a adapters are screwed down on top of the r12 fitting ports. they will be larger.

Can you mix r134 and R134a?

Maikal, when you say R-134a, it is the same chemical. So, whether you are adding it all from 1 manufacturer or from 5 different ones, it doesn’t matter.

What’s the difference between R12 and R134a compressors?

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. Just filling your compressor with the R134A would cause your compressor to work harder due to the increased pressure and eventually create a leak to seal.

Can a car be converted 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. As R12 used a different oil that was not fit to be used with R134a, the replacement was not that simple. But if your R12 system is working well and not leaking, you can still use it.

Can a Mopar classic be converted to R134a?

Whether you need to convert a Ford, GM, or MOPAR classic from R12 to R134a, two helpful tips to keep in mind…. Ignore your sight-glass. A properly charged 134a system will likely show bubbles in the sight-glass. Typical 134a charge rate will be approximately 70-80% of the factory R12 charge amount.

Can a Ford 134a be converted to R-12 Freon?

Converting to 134a – Ford R-12 “Freon” and 134a Until 1995, most cars with air conditioning used R-12 Freon refrigerant which has shown to have an environmental impact. R-12 is no longer used or produced in many countries and remaining quantities have skyrocketed in price.

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