Airco 300 Amp AC DC Heliwelder Tig Welder with Coolant Pump. Tig Gun, Miller foot pedal Up for sale we have an Airco 300 Amp AC DC Heliwelder Tig Welder in good working condition. All controls function properly. This unit comes with a tig gun with 23 feet of hose/cable(connected) Ground clamp with 23 feet of cable, and a foot pedal controller.

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2. Topic The Welders / Welding Equipment Classifieds / Manual for and photo of Airco Heliwelder 1341-0178 Welder By mikedinma Date 19:27 Hello - I picked up an older Airco 250 Amp AC/DC Heliwelder (stock #1341-0178) and am looking for a manual on it.
3. Airco Cv 250 Welder Manual Airco CV-250 welder for sale in Oklahoma. Purple Wave is selling a used Welder (Manual) in Oklahoma. This item is a Airco CV-250 welder with the following: 208/230/460V input, Three phase, Mighty II wire feeder, Serial RG912170. This Airco CV-250 welder will sell to the highest bidder regardless of price.

Thought weak HF was the problem.

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I got the new caps for the HiFreq. installed...

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Less spectacular improvements than I was hoping for.
HiFreq is 'somewhat' stronger, but on Alu. it still does weird things.
It acts 'cold' even on high range.
There is not an abundance of cleaning action, and the puddle is sooty.
Makes no difference if I clean everything rabidly, or not.
Then there's the ever present weirdness where the puddle seems to 'vibrate'
or hop up and down about .040 or so, plus the arc has that buzzing sound that
goes along with the vibrating. When it's doing that, it acts real cold, sooty and

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hard to get the puddle to even get shiny.
3 things I suspect:
1.Torch is sucking air, or bad bottle of Argon.
2. My aluminum service wire is not delivering enough amps, or somehow primary
voltage is dropping off.

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3. Internal problems.......other caps, or ????
Also weird that some days it will act quite hot with a smooth sounding arc,
then other days......what I described above.
I have an old air cooled Linde torch around someplace, I will try that just for chance.
Any ideas what the problem could be?
Appreciate any ideas.