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Welding Shop

Old Welder


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  #1  
Old 05-08-2017, 12:56:59 AM
circuitman circuitman is offline
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Default Old Welder

how is the best way to find current settings on the above? the original name plate with all the amp readings are gone. the original owner replaced it, & didn't add the info. it has a hi & lo range jack. btw this old girl weighs 340#.thanks for any help you can give!
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Old 05-08-2017, 01:38:59 AM
Thaumaturge Thaumaturge is offline
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Default Re: old welder

Clamp on amp meter. Dead short stinger lead to ground with amp meter on lead. MOMENTARILY turn on power switch. Record amps. Move to next setting.
Alternately... read highest range as described. Remove all power and measure resistance. Measure resistance of other ranges and extrapolate settings using ohms law.
Doc

But looking at Google images for old welders it looks like an old Lincoln, either 180 or 225Amp.
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Last edited by Thaumaturge; 05-08-2017 at 01:52:48 AM.
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Old 05-08-2017, 11:59:06 AM
circuitman circuitman is offline
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Default Re: old welder

thanks for the quick reply!i don't belive it's a lincoln. the reason i say this is because of it's design. looks like an old gas pump. this one the primary coil goes up & down.it fits into the secondary. strange looking thing.i will use my amp meter on it, THANKS AGAIN!
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Old 05-08-2017, 04:27:53 PM
circuitman circuitman is offline
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Default Re: Old Welder

just rembered one more thing, this unit uses a shunt, not individual taps.
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Old 05-09-2017, 11:56:48 PM
circuitman circuitman is offline
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Default Re: Old Welder

i have a cell phone but i don't know how to upload pics?
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Old 05-10-2017, 01:09:56 AM
Gary Barber
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Default Re: Old Welder

Find an experienced welder get him his favorite rod and he will be able to identify your amperage on each output within about 10 amps each OR get someone to weld with the machine while you use a clamp on ac amp meter short circuiting the welder to read amperage is not the same as welding amps. Gary
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Old 05-10-2017, 11:53:49 AM
Pete Spaco Pete Spaco is offline
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Default Re: Old Welder

I read someplace that many of the old "farm" AC buzz box welders were designed so their transformer would de-tune when the leads were shorted so they wouldn't blow primary fuses.
This means, to me, that you won't learn anything useful in a short circuit condition. Shouldn't you be measuring the current when there's a arc of some specific length?

It's different with DC welders, I think, but the power output in WATTS is the product of volts and amps in either case.

I'm such a bad welder that I don't know for sure what current setting I need anyway. I just select a piece of stock that is about the size that I'm gonna weld up and try it at some setting. Then, if I burn through, I turn it down, or if I don't get enough penetration, I turn it up.

Pete Stanaitis
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Old 05-11-2017, 12:11:39 AM
circuitman circuitman is offline
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Default Re: Old Welder

thanks pete! i've always heard that detail from welders, you just know where to go! THANKS AGAIN!
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Old 05-11-2017, 12:20:45 AM
Thaumaturge Thaumaturge is offline
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Default Re: Old Welder

Quote:
Originally Posted by circuitman View Post
i have a cell phone but i don't know how to upload pics?
Take pic on phone. When you post comment, look below for button that says "manage attatchments". If you don't see button click "advanced" and it should show up. Click it and "Choose file". Point it to the pic you wish to upload. Next see "upload" button on right. Click it. System will report success or failure. Finish your post.
Doc
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Old 05-11-2017, 07:56:25 PM
Seafarer12 Seafarer12 is offline
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Default Re: Old Welder

I would look for a schematic. Might get some info by pulling the covers off.
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Old 05-12-2017, 12:29:21 AM
circuitman circuitman is offline
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Default Re: Old Welder

hi seafarer, belive it or not that's the whole problem. the original owner made a new front for it. i also hoped there would be inside, but no such luck!
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Old 05-16-2017, 10:58:00 PM
dkamp dkamp is offline
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Default Re: Old Welder

Most welders WILL self-limit by saturation, so doing a lead-short-test won't always tell you the answer... and more often than not, having lousy leads or a marginal ground will limit that, too.

But you don't NEED to know... The only important thing, is wether it will weld.

Grab several sizes of a known rod... let's say you use 7018... and do some test-welds with it in various positions. You'll rapidly find out which are the higher taps, which are the lower, and then go look at the electrode box- if it's a small rod, rated for 85-110A, and you're melting the crap out of it, then you're clearly above 110A. If it won't heat the rod enough to make a puddle, then you're below 85.
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Old 05-16-2017, 11:07:47 PM
circuitman circuitman is offline
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Default Re: Old Welder

sounds like a good idea! noticed that on a box of rods. also agree that it welds your good!just would like some #'s. it only has three jacks ,common , hi,& lo. it welds good though!
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Old 12-01-2017, 09:16:27 PM
Charley K Charley K is offline
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Default Re: Old Welder

Being an ac machine, a 1/8" 6011 burns real well @ 90-100 amps. You might be able to weld a pass while someone is reading the meter. Would get you in the ballpark. Just a thought. CK
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Old 12-01-2017, 10:31:51 PM
circuitman circuitman is offline
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Default Re: Old Welder

hey charley, every body says that it looks like an old coke machine.found a pic of one on a welders forum but no name plate,grrrrrrrrrrrr!
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Old 05-20-2019, 02:22:04 PM
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Default Re: Old Welder

know this is a 2 yr old thread , but if it was still anyone out there that was curious, i found out that is an old P&H welder.accidentally ran across it on you tube, a guy was tearing one apart just like it. again i apperciate everyones help.
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