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Tool Talk Discussion Forum

Lincoln AC225 repair: Worth it?

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Nat 2

01-02-2007 14:19:27




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Okay, you guys have effectively scared me away from that great deal on the Campbell Hausfeld.

Now, Dad's had an old Lincoln AC225 buzz box with a Miller AC-to-DC conversion for nearly as long as I've been alive. About a year and a half ago it started not making the right noises, so we figured it was on its way out.

Figuring he's had it for 30 years and he deserved a new welder, we bought him a new fancy $400 Hobart AC/DC stick welder. He loves it, and has asked me on a couple of occasions if I wanted the old one.

Since they're still making them, I was wondering if it'd be worth it to take the old one to a shop to have them look at it.

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JT

01-03-2007 07:26:28




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 Re: Lincoln AC225 repair: Worth it? in reply to Nat 2, 01-02-2007 14:19:27  
Cehck the contacts on the on off switch. I bought an old Lincoln at a farm auction 5 years a go for $5.00, owner said it quit working, I knew it had to be something stupid, they never quit working, Well, the on-off switch is a big heavy exteranll contact switch, 5 minutes with a point file, it worked great, oiled the fan, put back together, has worked like new since. This thing is probably 50 plus years old, it has no rotary dial, you plug the gound in a hi or low plug in and the pos goes in the plug in of the heat range you need.

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JT

01-03-2007 07:26:27




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 Re: Lincoln AC225 repair: Worth it? in reply to Nat 2, 01-02-2007 14:19:27  
Cehck the contacts on the on off switch. I bought an old Lincoln at a farm auction 5 years a go for $5.00, owner said it quit working, I knew it had to be something stupid, they never quit working, Well, the on-off switch is a big heavy exteranll contact switch, 5 minutes with a point file, it worked great, oiled the fan, put back together, has worked like new since. This thing is probably 50 plus years old, it has no rotary dial, you plug the gound in a hi or low plug in and the pos goes in the plug in of the heat range you need.

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john cub owner

01-02-2007 19:21:41




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 Re: Lincoln AC225 repair: Worth it? in reply to Nat 2, 01-02-2007 14:19:27  
The old Lincoln's are nearly indestructible. Fist thing i would do is take it apart and check for mud dauber nests in the fan. been there, done that.



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Dan hill

01-03-2007 03:55:19




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 Re: Lincoln AC225 repair: Worth it? in reply to john cub owner, 01-02-2007 19:21:41  
The fan needs a few drops of oil once a year.I used a Lincoln that was kept in a dirt floor garage.The switch contacts would oxidize and need cleaning.I paid 93.00 for my 225 Lincoln in 1964.I keep it in a dry place and dont let it get covered with oil and paint.



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IA Roy

01-02-2007 19:14:44




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 Re: Lincoln AC225 repair: Worth it? in reply to Nat 2, 01-02-2007 14:19:27  
By the way, does anyone know where to find a ac to dc converter at a reasonable price.



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iniowa 2

01-03-2007 08:46:14




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 Re: Lincoln AC225 repair: Worth it? in reply to IA Roy, 01-02-2007 19:14:44  
Roy I have a converter if you are interested. It can convert a 300 amp welder. I think my email is open. Let me know or anyone else that would be interested.



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Dusty MI

01-02-2007 18:27:52




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 Re: Lincoln AC225 repair: Worth it? in reply to Nat 2, 01-02-2007 14:19:27  
The instructions do not say not to change the heat selector switch while welding, not exact words, many people read that to mean that you must turn welder off to change slector, not true. Mine is about 45 years old, I don't turn it off to change slector. The fan on mine does not start until the welder warms up.

Dusty



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dan hill

01-03-2007 03:57:42




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 Re: Lincoln AC225 repair: Worth it? in reply to Dusty MI, 01-02-2007 18:27:52  
Your fan needs oil.



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Stumpalump

01-02-2007 23:29:07




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 Re: Lincoln AC225 repair: Worth it? in reply to Dusty MI, 01-02-2007 18:27:52  
Dusty, you are right the book says "Coution: Do not turn the selector switch while welding as this will damage the contacts" and " There is a slight amount of play in each position. It is good practice to move the switch back and forth once within this play after switching to a new position. This wiping action keeps the contacts free from dirt and oxides."



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dan hill

01-04-2007 13:55:02




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 Re: Lincoln AC225 repair: Worth it? in reply to Stumpalump, 01-02-2007 23:29:07  
You would have a hard time changing the selector switch while welding.You would have to be close to the welder.I select the current before I draw an arc.Of course we have stoves marked hot when in use.My shotgun barrel says WARNING can cause death or injury.Then there is the one about the nut who put his new motor home on cruise control, then went back to make coffee.



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Stumpalump

01-02-2007 16:52:04




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 Re: Lincoln AC225 repair: Worth it? in reply to Nat 2, 01-02-2007 14:19:27  
I took mine all apart to borrow the power cord to try on a dryer I was fixing. There is not much inside that box. If you change power settings while it is turned on it arcs across the switch contacs and pits them. The book says allways turn power off to change settings. Ill bet you can take it apart and sand the switch contacts to fix it. A drop of oil on the fan may get it spinning if thats your noise. Another thing is transformers are known to buzz and vibrate. Make sure its mounted tight. I was fooling with a 220V water heater and the cover got across 220V. It blew the power to the entire 8 unit apartment I was in. Be extra carfull with 220 because the breakers go off after you do.

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Blue3992 (N Illinois)

01-02-2007 21:47:29




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 Re: Lincoln AC225 repair: Worth it? in reply to Stumpalump, 01-02-2007 16:52:04  
"because the breakers go off after you do."

HA HA HA. Best quote I've seen today.



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wdTom

01-02-2007 18:05:55




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 Re: Lincoln AC225 repair: Worth it? in reply to Stumpalump, 01-02-2007 16:52:04  
Do you need to shut off the welder to change settings? I would never change while actually welding, but if you are not welding and the unit is on I don't think it harms it to change settings.



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dan hill

01-06-2007 04:50:43




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 Re: Lincoln AC225 repair: Worth it? in reply to wdTom, 01-02-2007 18:05:55  
You dont have to shut the welder off to change current setting when no arc is running.You would have a hard time doing it any way.I select a setting,weld a bit then have a look at the bead.Then I decide if I need more or less current.I suppose Dufus could have a helper standing by the selector and tell him to switch it.Thats the reason for the warning on welders.



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630crazy

01-07-2007 11:21:23




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 Re: Lincoln AC225 repair: Worth it? in reply to dan hill, 01-06-2007 04:50:43  
Yeah, on the old Lincolns their was a crank that raised the windings up and down through the magnetic field. When I was a kid dad would holler at me to turn it up or down, but that�s was a totally different setup.



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old

01-02-2007 14:53:34




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 Re: Lincoln AC225 repair: Worth it? in reply to Nat 2, 01-02-2007 14:19:27  
I've got one of them buzz boxes and it hums and you can hear the fan but other then that there is no place for it to make noise. My buzz box a couple years ago the fan stopped working. I opened it up and played with the fan some and lube up the bushings on the fan and it has worked good ever since. Them old buzz boxes are almost bullet proof as long as the fan keeps working and you don't just plain weld for hours at a time and don't let them cool off. I.E. don't over do the duty cycle

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Paul from MI

01-02-2007 14:47:22




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 Re: Lincoln AC225 repair: Worth it? in reply to Nat 2, 01-02-2007 14:19:27  
I would give it a try. What"s to lose? I have used a Lincoln 225 for over 30 years without any problems, no AC/DC converter though. It"s probably saved more money, grief, and aggravation than any other tool I own.
Good luck,
Paul



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Cornolio

01-02-2007 14:43:43




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 Re: Lincoln AC225 repair: Worth it? in reply to Nat 2, 01-02-2007 14:19:27  
Open it up and find out why the fan is not turning.

That's about the only part that's going to be making sounds when you turn it on.

maybe the mouses have made houses in there.



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dan hill

01-04-2007 03:17:23




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 Re: Lincoln AC225 repair: Worth it? in reply to Cornolio, 01-02-2007 14:43:43  
The Lincoln 225 is mouse proof.



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RodInNS

01-02-2007 18:24:40




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 Re: Lincoln AC225 repair: Worth it? in reply to Cornolio, 01-02-2007 14:43:43  
Bingo. Check out the fan. It's the only part that ever died in my old Linc. The old thing is just about bulletproof, and I've done that continous duty thing for hours at a time with it, burning 1/8" 7018's.

BTW, when they say not to change settings while it's on, that should say so long as it's not under load. There's no need to shut the main switch off... just don't have an arc up. Otherwise, the circuit is open, and no harm is done.

I'd take a quick look at the old thing, see what's the matter, and change the fan if necessary. They don't make welders like that anymore. The wiring and transformer in that old bugger is capable of performing well past it's 20% duty cycle. Keep er cool, and it'll run forever. The Miller ThunderBolt I've got now is certainly not built like that....

Rod

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IA Roy

01-02-2007 19:10:55




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 Re: Lincoln AC225 repair: Worth it? in reply to RodInNS, 01-02-2007 18:24:40  
I bought mine with the amp control selector knob broken off. I bought a kit to replace it. Several times I cleaned the contacts. I had to shim the spring for the contacts. As it has been said, there is only one moving part that would make noise and that is the fan.



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