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  1. #1

    Default 330ST Aircrafter arc issues

    I have a 330ST Aircrafter in my shop that I inherited when I came onto the project. When I first began using it for TIG a few months ago, I was able to establish an arc from about 1/16" - 1/8" away from my work. Now, for some reason I can only establish an arc by way of a scratch start. Is there a switch or setting I'm not aware of that may have been bumped which might have directly affected this problem? I have downloaded the users manual but can't find anything specific to "scratch start" options.

    Thanks,

    Casey

  2. #2
    Join Date
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    Quote Originally Posted by theangrypirate View Post
    I have a 330ST Aircrafter in my shop that I inherited when I came onto the project. When I first began using it for TIG a few months ago, I was able to establish an arc from about 1/16" - 1/8" away from my work. Now, for some reason I can only establish an arc by way of a scratch start. Is there a switch or setting I'm not aware of that may have been bumped which might have directly affected this problem? I have downloaded the users manual but can't find anything specific to "scratch start" options.

    Thanks,

    Casey
    check figure 3-5 in the manual... make sure that item#7 intensity potentiometer is not turned way down,,,

    http://www.millerwelds.com/om/o351h_mil.pdf

    check spark gaps and clean/adjust as needed... section 5-3... probably filthy and needing gapped...

    Also... check the HF Control switch setting... make sure it is NOT in the center/OFF position..
    Page 15 in the manual... figure #4-11 "High Frequency Controls"
    Last edited by H80N; 03-28-2012 at 04:39 PM.
    .

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