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10-11-2009, 02:22 PM #1Professional Member
- Join Date
- Oct 2007
Charging walk in coolers and freezers
I worked with a tech recently who when charging walk in coolers and freezers after compressor change outs. He would cut off the condenser fans for brief periods of time. Both R-22 and 404-A.
Im just curious at what this was accomplishing and do any of you guys also do this and why? And how is this done properly etc...
Another thing say you are charging an R22 refrigeration system (large pan cooler) which requires 34 pounds of R-22. I had a heck of a time getting that much charged in. I ran warm water over the container many times to get the pressure back up to charge in the vapor.
Any tricks out there at speeding this process up? I know that charging liquid is considered a no no and the little liquid charge restrictor device is pretty slow as well.