This will create a vacuum that will remove the refrigerant from the system.
Adding refrigerant to car ac unit.
To get the ac working on a pre 1994 vehicle you ll first have to take it to a repair shop and have it converted to use r134.
Check the vent temperature check the co.
Threading the can onto the hose allows you to slowly top off the ac system with liquid refrigerant.
Once all aspects are connected to your ac unit you can release the valve on your freon container and allow the coolant to circulate in the system.
After you release the trigger check the pressure gauge to be sure you are not overcharging the system.
If the car does not use pure refrigerant a filter is added to prevent other substances from entering the machine.
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The best way to determine this is to check your car s owner s or repair manual.
Putting the wrong refrigerant in your unit can cause combustion injury and property damage.
Older cars use r12 refrigerant which is no longer manufactured.
Orange coast college john stuart demonstration.
2 choose the right refrigerant for your unit.
Connect the red line from the machine to the high port and use the blue line to the low port.
Check the vent temperature check.
Adding freon to a car air conditioner written by chris nickson on may 12 2010 to ensure our content is always up to date with current information best practices and.
Once the can is installed hold the can upright and squeeze the trigger for 5 to 10 seconds to add the refrigerant to the system.
Add only small amounts at a time allowing approximately 10 minutes between each small addition to get a clear reading on the gauges.
How to add refrigerant to an ac system how to add freon to a cay ac how to add r134a refrigerant to an automotive air conditioning system how to top off a.
Adding more refrigerant to a unit with dirty parts can damage the ac.