just got back from a call. New customer 3 year old system. Last year 1 1/2 lbs 410 was added by installing contractor, as customer says. Turn on system. Running in a vacuum, 20psi head. So charge is gone. Put 200 psi nitro and a trace of 22 in and it holds while i check every single joint in the entire system with infra detector and big blu. isolate condensor and put 450 psi in check everything again and it holds. No oil anywhere and it is holding. Left it charged with nitro gonna check it on thursday. Have there been problems with these units? I'm thinking I'm going to evac, charge and put locking caps on they are crying poor.
Idu m#B5vm-x25k-a S#B5070414373
Odu m#Fs4bd-024ka S#Fsd080401611