Mastering Decay Testing With BluVac 3.0

[@vincentsearle7064]

Would like to see a video of all of Jim's tools

[@mikerefrigeration5736]

Can you make a video about pulling vaccums for service technicians? I feel like a lot of repairs done for refrigeration or compressor replacements causes refrigerant off gassing and it affects the microns gauge and decay test. What is an acceptable vaccum if you're replacing the refrigerant and filter drier? Just a followup to my initial question: If one were to replace a evaporator coil on a walk in cooler or freezer and the condensing unit is 10 years old, what should the goal of evacuation be? Also should suction line filter driers in conjunction with a deep vaccum be a consideration? It would be interesting in seeing jim explaining basic filter drier selection.

[@dylb8801]

I highly agree more service worn tha clean fresh install stuff. So us service guys can get a idea of what's left over refrigerant boiling off and leak for say

[@Andersonairchris]

I would love that too but its really hard to define what's "good enough" for a system that's got used copper, coils ect that have oil in them which is impregnated with refrigerant.

[@dylb8801]

@@Andersonairchris the whole reason Jim can give us a rough idea what to look for

[@coldfinger459sub0]

Thank you for more detailed fine-tuned explanation. Much needed information.

[@horsth9566]

Does this “One hose” demonstration take into account “restrictions” such as the orifice, piston or txv, and the filter drier plus the compressor? Should a much higher micron level be expected and or a much longer time period to achieve the expected results?

[@superiorcomfortheatingairl3373]

My BluVac pro always passes decay test within 10 seconds on a new install after isolating, but when doing a repair on entire operating system (condenser, line set & coil) it passes the decay test but shows on the a graph chart and with the parameters I set should not of passed. I trust this gauge on new installs, but do get different reading compare to other micron gauges on repair type situation

[@cm9368]

what's going on when you isolate the system and instead of getting that positive curve on the chart your micron levels continue to drop?

[@measureQuick]

@@cm9368 it was a slow close, so trapped gas burped out and it continued to drop until it was completely closed.