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Posted by SteveB on August 8, 2008, 10:49 pm
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I have a Lincoln 175 SP+. It welds for a second, then cuts off. Sometimes
it welds fine. Other times, it's off/on for a second and that's it. A
while back, I took the cheesy plastic gun apart, and it worked fine for a
while after that. I called the supplier here today, and he said he could
send it to Vegas. I took the gun apart again, and bent the little contact
points up a bit in case they weren't making contact. What a set of contact
points! A very small washer on a plastic plunger. The geek told me to make
a shunt between the spade terminal contacts and see if the motor ran
continuously. I did not have a chance to do that today as I did some other
welding with my SA200 on some awning supports. Anyone have this problem,
and what did it turn out to be?
Steve
--
"...the man who really counts in the world is the doer, not the mere
critic-the man who actually does the work, even if roughly and imperfectly,
not the man who only talks or writes about how it ought to be done."
Theodore Roosevelt 1891
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Posted by Leo Lichtman on August 8, 2008, 9:52 pm
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"SteveB" wrote: (clip) The geek told me to make
> a shunt between the spade terminal contacts and see if the motor ran
> continuously. (clip)
^^^^^^^^^^^^^^^^^^^^^
"The geek," as you call him, was making a very valid suggestion. Until you
try that test, you do not know whether the problem is in the gun or in the
welder. Do the test--it will take only a couple of minutes.
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Posted by Ernie Leimkuhler on August 9, 2008, 12:04 am
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> I have a Lincoln 175 SP+. It welds for a second, then cuts off. Sometimes
> it welds fine. Other times, it's off/on for a second and that's it. A
> while back, I took the cheesy plastic gun apart, and it worked fine for a
> while after that. I called the supplier here today, and he said he could
> send it to Vegas. I took the gun apart again, and bent the little contact
> points up a bit in case they weren't making contact. What a set of contact
> points! A very small washer on a plastic plunger. The geek told me to make
> a shunt between the spade terminal contacts and see if the motor ran
> continuously. I did not have a chance to do that today as I did some other
> welding with my SA200 on some awning supports. Anyone have this problem,
> and what did it turn out to be?
>
> Steve
Sounds like a dirty or kinked gun liner.
They cost around $10 to replace.
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Posted by SteveB on August 10, 2008, 3:35 am
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>
>> I have a Lincoln 175 SP+. It welds for a second, then cuts off.
>> Sometimes
>> it welds fine. Other times, it's off/on for a second and that's it. A
>> while back, I took the cheesy plastic gun apart, and it worked fine for a
>> while after that. I called the supplier here today, and he said he could
>> send it to Vegas. I took the gun apart again, and bent the little
>> contact
>> points up a bit in case they weren't making contact. What a set of
>> contact
>> points! A very small washer on a plastic plunger. The geek told me to
>> make
>> a shunt between the spade terminal contacts and see if the motor ran
>> continuously. I did not have a chance to do that today as I did some
>> other
>> welding with my SA200 on some awning supports. Anyone have this problem,
>> and what did it turn out to be?
>>
>> Steve
>
> Sounds like a dirty or kinked gun liner.
> They cost around $10 to replace.
I welded with it today, and it ran fine most of the time. On liners, I used
to run .045 liners on my Millermatic 200 no matter which wire I used. I did
use the proper tip. The .045 liner lasted about three times as long as the
.035, and didn't cause any problems I was aware of. Now, if I could have
gotten the employees to quit pulling the machine around by the gun, they
probably would have lasted longer. I have heard that .045 liners are
available for these, and think I will just put one in there for GP and see
what happens.
Steve
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> continuously. (clip)