Omnipro 220 TIG problem
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  1. #1
    Join Date
    Jan 2019
    Posts
    11

    Omnipro 220 TIG problem

    Hello,
    Our shop recently purchased an Omnipro 220 welder. We use it mostly for repairs and in house fabricating, we are a machine shop. Everything seems to work fine except for the TIG function. When you start the arc it will seem to pulse erratically. If you keep the amperage very low it will maintain a steady arc but it's not hot enough to do anything with, as soon as you try to increase the amperage it starts pulsating again. I contacted Harbor Freight and although they were helpful the problem was not resolved. They suggested we exchange it for a new one, which we did, but the problem is still there. I am not a professional welder but I have done my share of welding, including TIG. We are using %100 Argon, has been used on our old Miller welder.

    Here is what we have tried so far:
    -with and without foot pedal
    -reversing polarity
    -tried 16ga steel and stainless
    -swapped out HF consumables with Miller
    -tried running on 120v and 240v

    Anybody else have this problem?

  2. #2
    Join Date
    Oct 2018
    Posts
    79

    Re: Omnipro 220 TIG problem

    When you exchanged the machine did you also use the new torch that came with it?

  3. #3

    Re: Omnipro 220 TIG problem

    Is the polarity correct with your leads? bad ground? proper sized collets to tungsten?

  4. #4
    Join Date
    Jan 2019
    Posts
    11

    Re: Omnipro 220 TIG problem

    No, we didn't. If we can't figure it out, that may be our next option.

  5. #5
    Join Date
    Jan 2019
    Posts
    11

    Re: Omnipro 220 TIG problem

    I have tried swapping the polarity and it didn't work at all. I have grounded directly to the material being welded and tried several sizes of tungsten with proper collets.

  6. #6
    Join Date
    Oct 2018
    Posts
    79

    Re: Omnipro 220 TIG problem

    Quote Originally Posted by pwspringer View Post
    No, we didn't. If we can't figure it out, that may be our next option.
    What is this in reference to? My question?

  7. #7
    Join Date
    Jan 2019
    Posts
    11

    Re: Omnipro 220 TIG problem

    Quote Originally Posted by rustybronco View Post
    What is this in reference to? My question?
    Sorry, I misread your question. We exchanged the welder. The TIG setup is an optional purchase. So we now have the exchanged welder but still have the original TIG kit. It may be possible that something is wrong with the torch head and lead?

  8. #8

    Re: Omnipro 220 TIG problem

    yep. Swap out the torch lead. These are great machines, but it could be something as simple as a defective torch. be sure to follow all the screen prompts.

  9. #9
    Join Date
    Jan 2019
    Posts
    11

    Re: Omnipro 220 TIG problem

    I found out the problem wasn't with our new welder, it was caused by a faulty auto-darkening welding helmet. Worked fine in MIG mode but something about TIG mode causes it to pulsate. Used my old fixed lens helmet and no problem. I am a little embarrassed I didn't realize what was happening but maybe it will be some help to someone.

  10. #10
    Join Date
    Dec 2003
    Location
    Fairfield,CT
    Posts
    1,158

    Re: Omnipro 220 TIG problem

    i have heard or auto helmets falsing out but never a machine. I never use an auto helmet on TIG.
    www.tjsperformance.com
    Dynasty 300 DX
    HTP 240
    HTP Microcut 380
    Hyperthem 85
    JD2 Hyd Bender and HF Hyd Ring Roller all in one =(Frankenbender)
    Bpt. Mill/DRO
    4' x 8' CNC Plasma Table
    Instagram: tjsperformance
    YT: TJS Welding and Fabrication

  11. #11

    Re: Omnipro 220 TIG problem

    Glad you got it worked out. The Vulcan OmniPro 220 is a awesome machine. I've never heard anything bad about them. Like I said, I'm saving for a wire feed welder. Hoping to afford a Miller, or Lincoln, but seeing how well these Vulcan OmniPro' 220's run, and how well built they are, I might pull the trigger on one when I have my money saved up.

  12. #12
    Join Date
    Jan 2019
    Posts
    11

    Re: Omnipro 220 TIG problem

    Quote Originally Posted by TJS View Post
    i have heard or auto helmets falsing out but never a machine. I never use an auto helmet on TIG.
    I'm just curious, why do you not use an auto helmet on TIG?

  13. #13
    Join Date
    Dec 2003
    Location
    Fairfield,CT
    Posts
    1,158

    Re: Omnipro 220 TIG problem

    Quote Originally Posted by pwspringer View Post
    I'm just curious, why do you not use an auto helmet on TIG?
    Got tired of my auto helmet falsing where it would slowly get brighter in my view. Had the module replaced 3 times cause of this. I won't name the company but it was name brand. I just got tired of it and just use a flip one. Been doing it this way for years. I only use the auto helmet on MIG.
    www.tjsperformance.com
    Dynasty 300 DX
    HTP 240
    HTP Microcut 380
    Hyperthem 85
    JD2 Hyd Bender and HF Hyd Ring Roller all in one =(Frankenbender)
    Bpt. Mill/DRO
    4' x 8' CNC Plasma Table
    Instagram: tjsperformance
    YT: TJS Welding and Fabrication

  14. #14
    Join Date
    Dec 2016
    Posts
    37

    Re: Omnipro 220 TIG problem

    i'm using a vulcan ad helmet down to 10A with HF protig and no issues with flashing whatsoever.

  15. #15
    Join Date
    Dec 2003
    Location
    Fairfield,CT
    Posts
    1,158

    Re: Omnipro 220 TIG problem

    Quote Originally Posted by filetobeef View Post
    i'm using a vulcan ad helmet down to 10A with HF protig and no issues with flashing whatsoever.
    Good to know, but I have been tigging with a fixed shade for many years now and it is just a habbit.
    www.tjsperformance.com
    Dynasty 300 DX
    HTP 240
    HTP Microcut 380
    Hyperthem 85
    JD2 Hyd Bender and HF Hyd Ring Roller all in one =(Frankenbender)
    Bpt. Mill/DRO
    4' x 8' CNC Plasma Table
    Instagram: tjsperformance
    YT: TJS Welding and Fabrication

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