Hey guys i just purchased a bluvac micron gauge and also setup my vacuum pump with a yellow jacket tree for two 3/8" hoses. Im also going to use the core removal tools. Im going to be evacuating a dry charge r22 condenser 3 ton split system heat pump. There is no refrigerant in the condenser. My question is when im evacuating the lineset do i leave my service valves in the condenser open so i can also pull a vacuum in the condenser and lineset at the same time? I just want to make sure its safe and wont mess with the compressor oil. Also if i reach my 500 microns goal and everything holds steady. Do I close my core removal tool with the ball valve and install the schraders? Or do i weigh in my charge without introducing any air into the system? Sorry for the dumb question i just want to make sure im doing my evacuation the right way since im in the process of learning the trade. If you guys can give me any ideas in the way you evacuate your systems will be helpful. Thanks guys.
Better to learn from the pros so i can do it the right way.
Better to learn from the pros so i can do it the right way.
