Miller welder

37 chief · Apr 19, 2009

Out miller welder which is gas powered had a problem today when a arc is struck the motor will not rev up, just stayes at idle.I had this problem some time ago, but it just started working ok. Now if I flip a switch from weld to constane speed of 1860 rpm I can weld the motor just stayes at a constant speed, and still welds ok. Will this harm the welder? Stan

Fudd@work · Apr 19, 2009

There is a circuit board that does that and it is bad. No, it won't hurt to run it on high speed all the time.

Fudd@work · Apr 19, 2009

Oops. It could be the solenoid that pulls the throttle is bad or a wire to it is bad.

Anonymous-0 · Apr 20, 2009

Won't hurt it at all and less chance of a cold start. Dave

Anonymous-0 · Apr 20, 2009

Had this myself on my Big 40. This is an older one about 1969 or 70, I give up trying to get the part I needed at a Miller so called sales & service, all I needed was a fuse like thing that closed to put power to it[reved up motor] even had the part in my hand. Looked at me liked I just landed from outer space. Now 4 the last 6 years I have been running it manualy, and works fine. This is a 300 amp dc welder. I do a lot of hardface and heavy welding on all sorts of equ. They have snice went out of business, wonder why?

Miller welder

37 chief

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Fudd@work

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Fudd@work

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Anonymous-0

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Anonymous-0

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