Working at a local (to me) small restaurant. The owner has a couple coolers, with compressors a couple rooms away from the coolers.
The pie case is out of liquid in the sight glass, the walk in cooler is about 1/3 full, sight glass at an angle. He insists they need topping off twice a year, and they take five pounds each time. The pie cooler (about 1/3 HP compressor, 115 volts, with a 3 1/2 by 5 receiver) he says needs 8 pounds of freon.
I had a look in my Johnstone catalog. the next size larger receiver holds
1.8 pounds. I don't think the system would hold 8 pounds, even if I filled all the vapor lines with liquid.He says the reason why the lines frost over, is that the water in the system is released when the freon is low. You see, oil doesn't freeze. So, when the freon is low, the water comes out of the system (inside the copper tubing) and that makes the frost on the outside of the copper tubing.
I told him there shouldn't be any water in the system. He replies that filter dryers only good for about a year. And that to really get the system dry, you have to open it up and put that powder in. I'm thinking..... powder? Huh?
God help me, I'm gonna need all my Jedi powers on this job. "These are not the droids we are looking for.... move along." It's not going to be easy to fix his stuff, he's insistent that he wants five pounds of freon in the one unit. God save the queen, and send me some help, too.