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02-22-2013, 07:32 PM #1
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Gauges for different refrigerants
what are your beliefs on using the same gauges for different refrigerant systems?
r-410a with r-22 for example.
Do you believe it will cause compressor and txv failures?
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02-22-2013, 07:35 PM #2
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Until me and sman met and got married,, I always used separate gauges (22 every day, 22 4way evac, 410 every day, 410 4-way evac) since the honeymoon stage me and ms. Sman share the love with everyone.
...
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02-22-2013, 07:36 PM #3
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may be this should be moved to tools and test equipment?
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02-22-2013, 08:41 PM #4
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I've used my DC (and YJ analogs before that) on various systems containing probably a dozen different refrigerant and at least 4, if not 5 different types of oil.
As long as good procedures are followed, there isn't a problem.
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02-22-2013, 09:22 PM #5
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Yep good techniques are the most important. Me personally has not fallen on the digital bandwagon.
And I have a Poe set and a mineral set. Basically like the resolution difference.
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02-22-2013, 09:23 PM #6
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Originally Posted by SBKold
This is the difference.
If you're using a 410a set on a R134a freezer, you're gonna have problems...
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02-22-2013, 09:35 PM #7
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Whys that jp I don't have a problem personally.
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02-22-2013, 09:40 PM #8
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With one division of the gauge being equal to 5 PSIG, it's kind of difficult know what your suction pressure is, exactly, making it more difficult to get an exact superheat. Originally Posted by SBKold
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02-22-2013, 09:34 PM #9
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Same gauges all the time. I try to do the pull the through technique when removing them(sucking everything through low side) and then I leave the ball valves open so nothing is left in it. I purge the hoses with system pressure every time I hook(I dont work on critically charged systems)
I've already seen dry r-22 units and replacement compressors using POE so trying to keep gauges dedicated to one type of oil would be hard.
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02-22-2013, 09:43 PM #10
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I see what you mean about that but you will admit the degree difference between 0-5 is negligible.
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02-22-2013, 09:54 PM #11
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Actually don't admit that
should have looked before. Lol.
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02-22-2013, 09:58 PM #12
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Missed that one... Originally Posted by SBKold
Actually don't admit that should have looked before. Lol.
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02-22-2013, 09:56 PM #13
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10 degrees is negligible?
R-134a
1# = -12.3F
5# = -3F
While you can interpolate between gauge lines, even the difference between 1 and 2 psig is nearly 3 degrees.
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