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  1. #27
    ColdQuack Guest

    Hmm Why do I bother?

    [QUOTE=jpsmith1cm;9980312]The biggest reason that you cannot use R410 gauges with R-22 is a matter of resolution. Hard to get an exact pressure reading on R-22 with a gauge that is calibrated for R410.

    I know you can prevent contamination and mixing refrigerants if you do things right, purging, etc., which I always do. But why make combination gauges for R22 and R410 when, like you said if the gauge set is calibrated for one or the other you probably wont get exact readings. I'm sure there are new techs that don't purge correctly which can cause some problems when working with both out of the same set. Thats what my original post was eluding to.
    Last edited by ColdQuack; 04-22-2011 at 11:00 AM. Reason: elaborating thought

  2. #28
    Join Date
    Sep 2008
    Location
    Western PA
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    25,671
    Quote Originally Posted by ColdQuack View Post

    I know you can prevent contamination and mixing refrigerants if you do things right, purging, etc., which I always do. But why make combination gauges for R22 and R410 when, like you said if the gauge set is calibrated for one or the other you probably wont get exact readings. I'm sure there are new techs that don't purge correctly which can cause some problems when working with both out of the same set. Thats what my original post was eluding to.
    Do you want my HONEST and UNVARNISHED answer?

    Because most 'technicians' are stupid and lazy. Good enough IS for them.

    IF they can carry a cheap set of gauges to cover every eventuality, then that is the thing they will do.

    Precision and accuracy might as well be a foreign language to these jokers.

  3. #29
    Join Date
    Mar 2011
    Location
    Nw.Connecticut
    Posts
    301
    JP the "crack" was mentioned to cust during progress he thought the fitting was split or cracked . Would not here anything else, like the braze didnt take in one 1tiny area. So wanted total removal and new 1 in. coup. Stupid.Open system for nought.

  4. #30
    Join Date
    Sep 2008
    Location
    Western PA
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    25,671
    Quote Originally Posted by Realist View Post
    JP the "crack" was mentioned to cust during progress he thought the fitting was split or cracked . Would not here anything else, like the braze didnt take in one 1tiny area. So wanted total removal and new 1 in. coup. Stupid.Open system for nought.
    Repeat after me:

    "I fixed it, sir or madam."

    Leaving out certain details is often in our best interest.

  5. #31
    Join Date
    Mar 2011
    Location
    Nw.Connecticut
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    301
    A lesson well learned

  6. #32
    Join Date
    Mar 2011
    Location
    East Coast FL
    Posts
    1,058
    jeeze guys.

    it's just a gauge.

    theres more to a system than refrigerant pressures.

    a good mechanic can walk up to a system with his hand and a nut driver and tell you if its running okay.

    (air conditioning)

    my gauges dont come out on every call.

    the gauge doesnt know what chemical compound is driving it.

    pressure is pressure. 410a or 22

    most of the systems i see , the least of your worries is a micro amount of oil cross contamination.

  7. #33
    Join Date
    Mar 2011
    Location
    East Coast FL
    Posts
    1,058
    we should be more worried about airflow and clean coils

    not to worry about system pressures before that is made correct

    low suction?

    take a look at that supply duct

    and that evaporator saturated with kitchen grease

  8. #34
    Join Date
    Mar 2009
    Location
    central illinois
    Posts
    532
    if you do not hook your guages up on every call how do u know what the system is doing?Are u one of them guys the customer would tell me that the company before didn't even put guages on.
    work to live not live to work.

  9. #35
    ColdQuack Guest

    Thumbs down KILL ME NOW!!!!!!!!!!!!!!!

    Quote Originally Posted by AiResearch View Post
    we should be more worried about airflow and clean coils

    not to worry about system pressures before that is made correct

    low suction?

    take a look at that supply duct

    and that evaporator saturated with kitchen grease
    Kill me now, please?? E'nufz Enuf

  10. #36
    Join Date
    Mar 2011
    Location
    Somerset, PA
    Posts
    17
    [One 4 valve digital (DC 1200) set that I am enjoying and still learning on. It is also used also to set the calibration and to pressure test all my stuff.


    Worth the investment?

  11. #37
    Join Date
    Sep 2008
    Location
    Western PA
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    25,671
    Quote Originally Posted by ColdQuack View Post
    Kill me now, please?? E'nufz Enuf
    You are learning a lesson about how things go here.

    We all have opinions, and many of us aren't afraid to share them.

    Do I agree with everything he said in his last couple of posts? Nope, but he raises some excellent points. There is a lot more to the refrigeration system than just measuring pressures.

    Heck... Wasn't it you who just recently called me a smart-ass???????


  12. #38
    Join Date
    Sep 2008
    Location
    Western PA
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    Quote Originally Posted by sstumble View Post
    [One 4 valve digital (DC 1200) set that I am enjoying and still learning on. It is also used also to set the calibration and to pressure test all my stuff.


    Worth the investment?
    You'll get a LOT of use out of your 1200. A tough as nails tool

  13. #39
    Join Date
    Mar 2011
    Location
    East Coast FL
    Posts
    1,058
    well guys you should know that :

    if your airflow and heat exchangers are not up to par .....

    than your saturated refrigerant temps will be off .....

    a moot measurement ....

    get the system cleaned up and airflow correct ....

    then look and see what the refrigerant is doing ....

    how many guys have added gas to a system with a fouled air side?

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