Then you need to get yourself one of these http://www.testequipmentdepot.com/ro...uum/14010a.htm !!
Yes
Nope, we don't own one.
__________________________________________________ _______________________
Experience is a hard teacher because she gives the test first, the lesson afterwards" ~ Vernon Law
"It's what you learn after you know it all that counts." ~ John Wooden
"When the teachers become unteachable we're all in trouble" ~ Mr. Bill
"Remember "Pro" is only a name, it's not always a mindset determined to do everything correctly" ~ Mr. Bill
Then you need to get yourself one of these http://www.testequipmentdepot.com/ro...uum/14010a.htm !!
Efhardystou.
I had the anolog version of that Robinaire when I did refer. Never used on an A/C cause it was considered over kill(30 years ago. So don't beat me up because attitudes were different then).
Thing had a monstrous vacuum tube thermistor sensor and a big scale and meter movement.
Thanks.
to those of you who dont use them........your not doing a very good job! 30" of HG is a long way from 500 microns, this you would never know by just using your gauges. under 500 microns is where you want to be to have all the moisture out of the system. The old 1000 microns is good enough just wont fly anymore.
i use it everytime the system is opened and i EVEN change the oil in my pump
At least this pole shows a good thing, over 90% of pro's here are using micron gauges.
How many of you guys put on a filter drier when you seal up the system?
Seen a lot of guys pulldown to a good vacuum but no filter..
Attitude was if it needed one the factory would have provided one.
I never heard of a micron guage until 410a. use it every time because i no longer will install r-22.
we mandate that every time a system is open a new filter dryer is installed.
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.
__________________________________________________ _______________________
Experience is a hard teacher because she gives the test first, the lesson afterwards" ~ Vernon Law
"It's what you learn after you know it all that counts." ~ John Wooden
"When the teachers become unteachable we're all in trouble" ~ Mr. Bill
"Remember "Pro" is only a name, it's not always a mindset determined to do everything correctly" ~ Mr. Bill
Whole new thread. But you're right, 410 will MANDATE micron guages usage.
And holding a neagative press for leak detection will become problamatic.
410A driers are so much more hygroscoic you stand to contaminate the drier if you have a leak with the systeem under vacuum.
I think that $400 Robinaire micron tester is for me.