few questions first why do you want to bleed the system in the first place? Freon was known as R12 refrigerant and was widely used for many years in the early days of car air conditioning. The machine is designed to capture the Freon, filter out the impurities and store it for future use. If you Google anything relating to charging or bleeding your car’s AC, you’re going to come across something about Freon. The bleeder valve is then tightened. To bleed the air out the cooling system you can follow one of three different methods, depending on whether your particular system comes with bleeding screws or not. How to Put Freon In Car: A Step-by-Step Process. If you have freon added to your ac every year, you must have a leak somewhere that needs fixed or replaced before your system fails. The temperature control onto hot and the fan is turned off. How to bleed AC System Normally Aspirated Powertrain. A bleeder is loosened with a 12mm screwing object. There are some rubber seals and O … If you don't know whether your system comes with a bleeding screw(s), consult your car owner's manual, or check your vehicle service manual. Another set of liquid is poured into the funnel and some is poured into a reservoir at about 3/4. Since you have introduced excess refrigerant, you just need to reduce its pressure so that it meets the appropriate amount set forth by your car… If you've overcharged your air conditioning system with R134a refrigerant, you needn't recharge the air conditioning system. The federal law also prohibits you from freeing the refrigerant in the air. A pre-mixed liquid is poured into the funnel. A funnel attachment is placed onto the cooling system and the actual funnel placed ontop. Here is how you will remove the refrigerant from the car’s AC. Make a container ready to discharge the refrigerant. second take it to a shop. If you’re resurrecting the A/C in a vintage car, the vast majority of the time the refrigerant has long since leaked out, but if your car has refrigerant in it, and you need to open up the A/C system to work on it, spend a little money and take the car to an A/C shop. if you just bleed the system yourself and do not evacuate the system you can damage the compressor or your reciever/dryer if the system is exposed to the air … Normally recommended microns for Vacuum of system is 500 Microns but, some manufacturers recommend 80 or 100 microns based on their manufacturing parts for longer life, more cooling capacity, less power consumption and more efficiency. However, Freon is also a significant greenhouse gas that causes extreme damage to the ozone layer. It is illegal to release Freon into the atmosphere. Sure, sometimes you can temporarily “patch” the system by added more freon, depending on the severity of the leak. 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