When retrofitting a system from R 12 to R 134a what is required to be done?
When retrofitting a system from R 12 to R 134a 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.
How do I get rid of R134a?
Mine has a “convenience center” where you can take trash. At that location, they have a place where you stack cans of paint, oil, etc for pickup….they probably take that too. Another option since it’s r134a, you could take it to a local repair shop and offer it to them for free…that way it’s not just wasted.
How to change air conditioning from R12 to R134a?
This type of valve is not compatible with R134A systems so they need to be replaced with adapters. Place the high side and low side retrofit fittings over the old fittings and use a wrench to tighten them to about 20 ft-lbs of torque.
What happens if I Fill my compressor with R134A?
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. But that’s the second thing to worry about. The first thing is that your factory compressor should be good enough to work correctly.
Why are refrigerant gases called R134a instead of R12?
Soon the R12s were banned in many places. As a result, they were replaced by other refrigerant gases, one of which is R134A. Unlike R12, R134A contains hydrogen and fluorine molecules, which is why it is also called HFC and not CFC. The use of R134A prevented damage to the ozone layer.
How to remove refrigerant from car AC?
You also cannot dispose of the substance into the atmosphere. You will need an AC recovery machine to remove Freon from car at home. These machines can recover and recycle the cooling substance. When the repair is done, they can also drain and recharge the system.
Do you need to convert R-12 refrigerant to R-134a?
If you drive an older vehicle (pre-1994), the air conditioning system contains R-12 refrigerant (Freon). As long as the A/C system has no leaks and it cooling normally, there is no need to convert from R-12 to the new “ozone safe” R-134a refrigerant.
When did cars start using R12 instead of R134a?
Many organizations believe that R134A contributes to global warming. Vehicles manufactured before 1994 used R12 for air conditioning. Vehicles older than 1994 started using R134A instead of R12. So what if you have a car that was made in 1994 or even earlier?
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. But that’s the second thing to worry about. The first thing is that your factory compressor should be good enough to work correctly.
Do you have to have R-134a fittings on high service ports?
After the modifications are made, the system is recharged to about 85 to 90% of its original capacity with R-134a. Federal law also requires the permanent installation of R-134a fittings on the high and low service ports to reduce the chance of refrigerant cross-contamination the next time the vehicle is serviced.
