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Thread: R410A mistake

  1. #1
    Join Date
    Oct 2005
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    R410A mistake

    All of our buildings have R 22 systems. Recently we had to replace a few with the new R410A. One of the units had a small leak in it so I repaired it. And then I charged it up by weight however I was used to R 22 so I just charged it on the vapor side. Afterwards I realized that for some reason you’re supposed to charge R410A as a liquid. My question is how do I fix this mistake? Do I have to remove all the refrigerant and put new in. Also is the jug of R410A any good now that I’ve taken out just the vapor. I hope this makes sense.
    "Do not let what you can't do interfere with what you can do"

    "Do what you can do the best that it can be done and no one will ever know what you can't do"

  2. #2
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    Unless you used the entire drum I’d pull it and recharge.

  3. #3
    Join Date
    Nov 2006
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    Pull out the charge into a recovery cylinder, and put the rest of the jug into that same cylinder. Now you have all components in original proportions.

    Now, charge liquid as you intended, and use that recovery cylinder for 410a charging until it is gone.
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist
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  4. Likes crazzycajun, Lahrs liked this post
  5. #4
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    Split systems ? If so what did you do about the metering device? , drier? was that changed? Just asking...

  6. #5
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    Oct 2005
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    Thread Starter
    Oh snap that’s great advice I’ll do it thanks

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