When retrofitting a system from R12 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 convert my R12 to R134a?
How to Convert an R12 to the R134a System
- Discard any R12 refrigerant still in the system by taking your vehicle to a licensed air-conditioning professional.
- Open the engine compartment of your vehicle.
- Push the high side retrofit R134a fitting over the old fitting and use a wrench to tighten it.
Is it bad to mix R12 with R134?
The oils are different and not compatible and can cause an explosion. R134a is also a smaller molecule than r12 so if you HAD a small leak with r12 that you did not fix you have an even bigger leak now.
How to convert your car’s a / C system from R12 to R134a?
The A/C system in many older vehicles needs to be converted from R12 refrigerant to R134a refrigerant. This video shows you how to convert your vehicle’s A/C system from R12 to R134a using an IDQ Retrofit Kit. 1. Locate the low-side and high-side A/C service ports.
Is it possible to retrofit an R-12 a / C system?
The other approach to retrofit is the “quick and cheap” one. On many 1989 through 1993 vintage vehicles, R-12 A/C systems can be converted by simply recovering any refrigerant that is still in the system, adding POE oil (which is compatible with both types of refrigerant), and recharging to 85 to 90% capacity with R-134a.
What can happen if you put R134a in an R12 system?
R134a uses Polyalkylene Glycol (PAG) oil. One commonality both R134a and R12 share is that they are compatible with Polyol Ester Oil (POE). Finally, R134a is much smaller than R12 on the molecular level, and thus moves and behaves differently. What Can Happen if you Use R134a in an R12 System?
How do you change the refrigerant on an R12?
Start the engine and switch the air conditioning to highest setting. Put a thermometer in the center vent to measure the temperature as you add refrigerant. Connect the T-valve hose to the low side service port. Open the valve and allow the system to draw the refrigerant out of the can–you can feel the can get colder and lighter.
The A/C system in many older vehicles needs to be converted from R12 refrigerant to R134a refrigerant. This video shows you how to convert your vehicle’s A/C system from R12 to R134a using an IDQ Retrofit Kit. 1. Locate the low-side and high-side A/C service ports.
The other approach to retrofit is the “quick and cheap” one. On many 1989 through 1993 vintage vehicles, R-12 A/C systems can be converted by simply recovering any refrigerant that is still in the system, adding POE oil (which is compatible with both types of refrigerant), and recharging to 85 to 90% capacity with R-134a.
Start the engine and switch the air conditioning to highest setting. Put a thermometer in the center vent to measure the temperature as you add refrigerant. Connect the T-valve hose to the low side service port. Open the valve and allow the system to draw the refrigerant out of the can–you can feel the can get colder and lighter.
Can a car be reserviced with a R12 system?
GM recommends that vehicles with A/C systems designed for R12 be reserviced with R12 as long as the supply lasts. GM recognizes the need to retrofit A/C systems in the near future and is working out the details. GM states that under no circumstances should a retrofit be performed unless the customer has had the options explained to them.