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  1. #1
    Join Date
    Jul 2019
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    Brand new gauges off 6 psi on high side, should i zero them?

    So i got my gauges a month ago high side was always a little off, it isn't much but still bothers me so I have a few questions. Do yellow jackets come calibrated? Is there anything wrong with zero-ing them, like will this force me to zero them more often? If i do zero them i am assuming its to the forwardx line of the white box with zero under it and not the middle? (sorry every other gauge set I've used sucked I dont know what a proper set looks like zero'd)

    My lead told me he learned in school to zero them before calibrating and that's it.

    It's the Titan 4 manifold set about $230, i let all the pressure out set them at room temperature and the high side is one mark up from zero.
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  2. #2
    Join Date
    Jul 2019
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    Thread Starter
    In doing research on this site I've decided not to zero them, I will probably calibrate them or at least check it at the shop, but any replies are still welcome, Im running calls and doing A.C. installs on my own now (after 2 years) so I no longer have a experienced leads brain to pick all day.

  3. #3
    Join Date
    Sep 2007
    Location
    edmonds wa
    Posts
    4,171
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    Most if not all gauges have a zero adjustment screw either on the back or in your pic, maybe under the plug just between the R-410 marks.
    UA Local 32

  4. #4
    Join Date
    Jul 2019
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    Thread Starter
    I know how to zero them just not sure if I should

  5. #5
    Join Date
    May 2014
    Location
    Bay Area California
    Posts
    23,579
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    Do you have a thermocouple that you know is accurate? If so, put it on a tank of R-22, then adjust your gauge to that T/P relationship.
    If you were a real tech, you'd solder a relay on that board and call it good to go.

    I do a triple evac with nitro to remove non condensables.

    I use 56% silver on everything except steel.

    Did you really need the " If you were a real tech " ??

  6. #6
    Join Date
    Jul 2019
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    5
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    Thread Starter
    Awesome, thank you!

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