10. A/C and Safety System 10-149 A/C system 10.1.12.14 A/C system vacuuming 1. Vacuumize the A/C system. a. Connect the high and low pressure lines of the cooling circuit. b. Open the low pressure valve switch ① and the high pressure valve switch ② of the equipment, select the option "Vacuumize", and set the time to 15 minutes. Start the equipment to vacuumize, and when the time reaches the set value, the equipment will automatically stop working. c. Close the high pressure valve switch ② of the equipment and check the pressure value of the low pressure gauge. d.
If the pressure value reaches the set value and does not rise again, it can be confirmed that there is no leakage in the cooling circuit, and the compressor lubricating oil and refrigerant can be added. e. If the pressure value rises, check the cooling circuit for leaks. VOYAH FREE