How a Recovery & Recharge Machine Works?
When a recovery machine is hooked up to the car, it creates
a vacuum and sucks all the Freon out of the vehicle and cleanses it through a
filter and stores it in a storage tank. When the repair to the system is
complete, the machine will vacuum the system down to 30 inches of mercury to get
rid it of all moisture and air. After the system is free of air and moisture,
the technician will look up the proper amount of charge required for the size
system and set the machine to fill the vehicle with the exact charge of Freon.