Parweld 202 ac/dc issue with cleaning,

  1. Ruffian Member

    Messages:
    2,370
    Location:
    Devon UK
    After anyone who may be able to help with me.

    I have a parweld 202 and seems to be having an issue with the cleaning action side of the ac welding. (Electrode positive)

    Just seems to struggle with it and eventually will run into the bead.
    I can counter some of it by massively increasing argon lpm but it's not right.

    These Welds are the best it has done but were at 25lpm! I have checked for gas leaks which I cant find any, (regulator to machine, in the machine, or torch side)

    Thinking it may be down on power on electrode positive as welds fine on dc.
     
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  2. AndersK Member

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    Sweden
  3. Ruffian Member

    Messages:
    2,370
    Location:
    Devon UK
    Thankyou for your reply but the start up is probably the best bit of the weld, as can hold the torch on it for a couple of seconds to get heat and cleaning working nicely.

    I compare it to similar welds done with my other machine (200amp jasic) and the difference in my opinion is quite big hence wondering if my parweld is faulting?
    Hence the grainy weld?

    Jasic weld below.
     
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  4. Ruffian Member

    Messages:
    2,370
    Location:
    Devon UK
    Parweld welds
     
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  5. Ruffian Member

    Messages:
    2,370
    Location:
    Devon UK
    Ok so got hold of parweld earlier in the week who has put me onto a very helpful employee who has interrogated videos and diagnosis of my welding.

    Seem to have come up with a list of possibilities and will try a few more things but it's a possibility it's a card playing up.
    The machine has gotten to that age though where if it's an expensive card it may not be getting replaced but kept for a dc only machine. (Which is a shame though)
     
  6. Rrobson

    Rrobson Member

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    119
    Location:
    West Yorkshire
    What percentage are you running electrode positive?
     
  7. Ruffian Member

    Messages:
    2,370
    Location:
    Devon UK
    30% usually but tried everything from 15-50 to try and see the differences.

    This is running 80-120hz, 65amps, between 20-40 balance.
    Only one cleanish weld out of the lot and that was when the gas was wound up to 25lpm,
    (Measured through reg and pea shooter)
     
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