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Welding Shop

Help with an old welding machine!


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  #1  
Old 01-10-2009, 11:38:16 PM
anakell anakell is offline
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Default Help with an old welding machine!

I recently purchased an old welding machine and wanted to see if anyone knows anything about it. I am posting photos and would appreciate any reply. 200 amp Hammett closed circuit AC. I have not been able to find any others on the internet.

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  #2  
Old 03-19-2010, 10:29:46 PM
rusted rusted is offline
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Default Re: Help with an old welding machine!

Good to know there are at least two of these. I inherited a Model 250 from a friend who passed away. He used it for about thirty years that I have known him. Has anyone else used one or is using one? I have a couple of questions...
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Old 03-20-2010, 09:10:09 AM
Holland501 Holland501 is offline
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Question Re: Help with an old welding machine!

OK, I'll ask. What sort of questions do you guys have?
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Old 03-20-2010, 03:38:02 PM
rusted rusted is offline
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Default Re: Help with an old welding machine!

Thanks for asking, Holland501! My main question deals with the switch on top marked "off-low-med-high". I know the amperage is selected by plugging the cable in to the desired hole (40, 60, 90, etc.) so what am I changing when I flip the switch from medium to high. I never paid much attention when Wes was welding and now I wish I had. Also, would the duty cycle be figured about the same way as a more modern welder? That is the more the amps the less the duty cycle? Thanks for any help or opinions!
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Old 09-29-2012, 11:15:19 PM
rusted rusted is offline
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Default Re: Help with an old welding machine!

Just bumping this up to the top in hopes that some of our new readers might have info or opinions.
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Old 09-30-2012, 11:52:09 AM
Jan4CMF Jan4CMF is offline
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Default Re: Help with an old welding machine!

It would seem like the top switch would be a fine tuning switch (rheostat ) just easier then moving the cable lead. That's just my gues.
Jan
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Old 09-30-2012, 12:24:37 PM
rusted rusted is offline
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Default Re: Help with an old welding machine!

That's my guess also. Duty cycle doesn't seem to be a problem... windings on this thing must be huge! I am not a good enough welder that I can tell the difference between low-medium-high or maybe the switch is only making the on-off function. This thing suits my abilities well. It's old and so am I!
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Old 10-01-2012, 09:24:40 AM
Combustor Combustor is offline
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Default Re: Help with an old welding machine!

Some transformer type welders had high and low outputs which gave higher and lower open circuit voltages to suit different electrode types. Typically the higher striking voltage was required for low hydrogen and other special type electrodes. I think they probably switched in a few extra turns on the secondary. May be able to confirm this with a voltmeter. Combustor.
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