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Summary: Less than five hundred microns indicates there are no leaks in the system. Learn how to ground and seal air conditioner lines with tips from a professional HVAC technician in this free home cooling system repair video.
Tony McClaren is a licensed master journeymen HVAC technician with over 20 years of schooling. He has traveled all over the U.S. installing commercial as well as residential air...read more
"Now while my other man is finishing up the humidifier. We're still installing it. I'm going back out and check my vacuum pump and see how we're doing on it. So the microns are down to the below four hundred. Anytime we're below five hundred, around five hundred we're in good shape. That proves without a doubt there's no leaks in the system. I'm shutting my valves off. I can turn my pump off now. And then put my vacuum pump back in my truck. Now I completely screw this up to the top until it's seated. You don't try to, when it stops, stop. Don't try to force it, because you could damage it too. Put the caps back on. And we could secure them a little bit better later. But right now I'm just going to get them where they're snug. They don't have to be real tight anyway. I'm opening up now getting into my controls for my air conditioner. This will be for my low voltage and my line voltage controls. And they just tuck right in. And they're actually connected there. Now this was their old one. If you'll remember they were damaged quite a bit. So I'm bringing my new one over here and I'm going to splice it right here. And I have to put me a splice right here, which I don't like to do, but I don't have a lot of choices with this because it was damaged. I didn't trust it. You see the old one's cut and damaged two or three places. And it's even burnt right here some, so. It's actually for the sweating purposes is all it's for. I'm going to use the old pull out. It's in good shape. I didn't find nothing wrong with it. I checked it before. But the cell type going to the other unit was in poor shape. If I found a problem with this and didn't trust the electrical integrity of it, I would have changed it."