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Lincoln 175 SP+ Question

I was welding today, and my welder started sputtering. When you pulled the trigger, it would weld for about a second, then kick off. It welded each time for about one second with the trigger held on. Just like it was spot welding.

I hadn't welded enough (I think) to kick in the duty cycle. I believe I have welded more than that before. I shut it off and let it sit for a while. Then I disconnected it, and opened it up, and made sure all the lugs were tight. I wiggled the connecting wires. Everything seemed good.

I fired it up and it took off welding again.

Any idea of what this was?

Steve

Reply to
SteveB
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My Lincoln 175 started doing the same thing after about a year. I suspected dirt or galling of the wire in the cable. I clamped a bit of paper towel that I had sprayed with WD-40 around the wire before it goes into the cable. It seems to have solved the problem. The small amount of WD-40 doesn't intefere with the weld (at least on my backyard welds).

Reply to
John

are you using some kind of tip dip [cleaner]?

Reply to
dogalone

Nope. Welded again this morning for a couple of hours, and all was fine again.

Steve

Reply to
SteveB

mine had a sticky trigger switch... was just a coincidence the tip cleaning gel seemed to help

Reply to
dogalone

I had a similar problem with my SP-170T. I went to use it one day and it spit out about 1 inch of wire and then stopped completely. Mine's simpler than yours because it doesn't have variable voltage but there was a connector going from the gun switch to the control board that I reseated and it's been working fine ever since. I think we've run through 2 10 pound rolls of wire since then without a single problem.

As for duty cycle. My son uses it pretty heavily building custom truck bumpers and he's never hit the duty cycle. We run .030 wire most of the time though and never anything thicker.

Best Regards, Keith Marshall snipped-for-privacy@progressivelogic.com

"I'm not grown up enough to be so old!"

Reply to
Keith Marshall

"Keith Marshall" wrote

My son uses it pretty heavily building custom truck

Okay, next dumb question. What happens when you hit a duty cycle? Does it just shut down all together?

Steve

Reply to
SteveB

Reply to
RoyJ

Then it wasn't hitting the duty cycle. It was acting just like a spot welder.

Steve

Reply to
SteveB

Are you sure you didn't have a sharp bend in the cable with the wire feed in it (not the ground) ... or worse, standing on the cable ?? (had to ask) If the wire hangs up, the feed motor for it "trips off" until you release the trigger and pull it again (releasing the trigger resets the drive motor control). If there is too heavy a "load" on the wire feed it will do that.

mikey

Reply to
Mike Fields

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