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  1. #1
    Join Date
    Nov 2004
    Location
    NJ
    Posts
    72
    I just used my r22 guages on a 410 system. Should I evacuate the lines and maniford???

  2. #2
    Join Date
    Jun 2000
    Location
    NC
    Posts
    108
    Too late damage is already done to 410 system.

  3. #3
    Join Date
    Sep 2002
    Location
    South Dakota
    Posts
    6,579
    Originally posted by jmandtc
    I just used my r22 guages on a 410 system. Should I evacuate the lines and maniford???

    You need far more than that, you need an R-410 education. Go here and start reading;

    http://www.hvac-talk.com/vbb/showthr...threadid=45769



  4. #4
    Join Date
    Sep 2002
    Location
    South Dakota
    Posts
    6,579
    Originally posted by Lifer
    Too late damage is already done to 410 system.
    Exactly what damage was done to the system?????


    The potential damage is to his R-22 gauges and hoses.


  5. #5
    Join Date
    Nov 2004
    Location
    NJ
    Posts
    72
    I didn't do anything but put my r22 guages on the 410a system. Im embarrassed to tell you I am 410 certified but that was a year ago and this 410 system was not marked. Did I contaminate my guages and the 410 system??

  6. #6
    Join Date
    Jul 2002
    Location
    Zelienople, Pa
    Posts
    2,965
    Maybe if he had quick connects and there was still R-22 and oil left in his guages...
    How tall are you Private???!!!!

  7. #7
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    66,750
    If you added gas to the system you put mineral oil in the 410a system.

    Should not have been enough to harm the system.

    But some thing to look out for these days.

    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

  8. #8
    Join Date
    Jun 2000
    Location
    NC
    Posts
    108
    r22 systems uses mineral oil and it doesn't mix with P.O.E. oil that is used in 410 systems it is like water and oil.

  9. #9
    Join Date
    Apr 2005
    Location
    NE PA
    Posts
    698
    It is unlikely that any oil contamination was done. The pressure of the refrigerant pushes the gas and any residual oil into the hoses and gauges. In order to push that content back into the system, the pressure in the gauge would need to be higher than the system. Most of us remove the hose from the schrader and the gas in the hose is a deminumis loss of refrigerant.

    It is possible that either in a charging hose or if you back pressured the hoses with a recovery compressor wouldyou be able to get flow back into the system. Even in that case the miniscule amount of oil would do no harm. Unless the hose was filled with oil.

    I'm 410 certed also and very small amounts of mineral oil will not damage anything.

    paul

  10. #10
    Join Date
    Oct 2003
    Location
    Florida's space coast
    Posts
    2,537
    I'm sure any cross contamination was minimal and not a major cause for concern.

    However a little refresher on R410a is in order.
    We've been doing so much,for so long,with so little, that now we can do almost anything, with nothing at all.

  11. #11
    Join Date
    Sep 2002
    Location
    South Dakota
    Posts
    6,579


    You could mix as much as 5% mineral oil with POE oil and not have a problem. Lab tests with even greater amounts of mineral oil mixed with POE oil have been done with no appreciable problem even with extended testing.



  12. #12
    Join Date
    May 2003
    Location
    Sarasota. Fl
    Posts
    1,203
    I have a set of 410 gauges that I use on 410 systems.

    That being said....

    I do all other refrigerant work with my R-22 gauges.

    134 a, 404 a, Mp39....etc.

    Just make sure your hoses are empty when you connect them and you will be fine.

    It is the job of thinking people not to be on the side of the executioners.

    ~Albert Camus

  13. #13
    Senior Tech Guest
    You have a guardian angel...been me they would'a blown sky high...

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