IMHO only a HACK would pull a vaccum on a system w/out checking the micron level . That is truely the only way to be 100% sure that you have zero leaks and that the system is contaminent free .
Again just my opinion
No offense, but contaminents are removed by a good flushing (acid, oil sludge, stuff like that) a vacuum pump will remove air along with moisture and non condensibles.
I never heard of a micron guage until 410a. use it every time because i no longer will install r-22.
And that ok Buddy we all started somewhere unlike some here that will make you feel so bad and belittle folks because they were born with a micron gauge in there butt and a NATE certificate in there hand and a Sling Psychrometer in there teeth. Rather than putting folks down here that haven't used these few tools of the trade we "Pro's" should be encouraging old and new Pro's that haven't been using these tools how these tools can be beneficial to them in servicing a/c equipment. I guess instead of the sarcasm and put downs use our knowledge and experience and treat these folks as students and teach them as any good teacher should, remember none here knows it all anyway, but if we all work "together" we can all gain knowledge from one another, "maybe" even something we did not know, just my two cents.
"The critic is a prisoner to his own experiences and perspectives, erroneously believing his limited experiences are the sum of all truth".
And that ok Buddy we all started somewhere unlike some here that will make you feel so bad and belittle folks because they were born with a micron gauge in there butt and a NATE certificate in there hand and a Sling Psychrometer in there teeth. Rather than putting folks down here that haven't used these few tools of the trade we "Pro's" should be encouraging old and new Pro's that haven't been using these tools how these tools can be beneficial to them in servicing a/c equipment. I guess instead of the sarcasm and put downs use our knowledge and experience and treat these folks as students and teach them as any good teacher should, remember none here knows it all anyway, but if we all work "together" we can all gain knowledge from one another, "maybe" even something we did not know, just my two cents.
No offense, but contaminents are removed by a good flushing (acid, oil sludge, stuff like that) a vacuum pump will remove air along with moisture and non condensibles.
Sorry I was not more specific clover but IMO anything that may be in the system EXCEPT for refrigerant and oil is a contaminent .
Sorry I was not more specific clover but IMO anything that may be in the system EXCEPT for refrigerant and oil is a contaminent .
No use splitting hairs. We probably have some regional terminology here that would not agree with some of the every day procedures used in your neck of the woods.
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Originally Posted by hvaclover
