R410a Refrigerant

How to charge car R134A AC system two

How much R134A refrigerant should i add to my car ac system?

First thing is to check that your AC is fully discharged or not.If your AC is discharged completely then you have to vaccum it completely.Just run the vaccum pump for 30 minutes(approximately).Please check the service manual provided by car dealer or look at the sticker below the hood to find the amount of R134A needed to completely charge the system.For example if the required amount of refrigerant is 2 pounds than you have to charge it with 3 12 ounce cans of r134a refrigerant.

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If the car ac is not discharged completely

Find the specified pressure reading of both high pressure and low pressure from your service manual.Just connect the AC mainfold gauges to your car.After that puncture the can to start the flow of R134A in system.Keep an eye on the pressure shown in AC gauges.Once it reaches the specified pressure,remove the

can.

Is it ok to mix R12 and R134A

Never.Mixing R12 and R134A will create a pressure that will be higher than both R12 and R134A.This can damage your air conditioner system.It will create a black goo that will clogg your car ac system resulting in black death syndrome.The minimum amount charged to clear the black death syndrome is one thousand dollars.It can also damage compressor and pressure relief valve.

If you want to add R134A in your car model designed for r12(prior to 1995),then you have to go to dealer and ask for proper retrofitting.There is no easy way out.

Precautions while filling R134A in system

• Keep your hands off the moving engine parts while fitting the can and gauges.
• Avoid direct skin contact with R134A.
• Fill the refrigerant as per the specifications.Too much R134A will blow the gaskets and too little will overwork the compressor.
• Never release refrigerant in air.It is illegal because it can deplete ozone layer.
• Always shake and turn the can upside down while filling refrigerant.
• Wear goggles and gloves for safety to protect your eyes and body in case of accidental explosion.