Question about Hobart Handler 140 Mig Welder
My Hobart Handler 135 welder drive motor inconsistently works without a load on the rollers. As soon as a load is exerted on the rollers the motor will not work at all. I tested the motor with a 12 volt battery and it will operate properly on a direct feed with and without a load. I had the circuit board tested by an electrical engineer and no problems were found once tested and inspected. Only thing found was a high percentage of metallic flakes that could be discharging the capacitors prematurely. A good cleaning every now and again may help avoid this problem. After cleaning the whole unit I will reinstall the circuit board in the machine tonight and test it. Any suggestions from anyone if all fails. Thanks.
Try checking your heat selector switch. the pc board gets power from it. so the pc board relay may function (click) but have little or no power once the curcuit is made to the feed motor. it happened on my 135.
Posted on Sep 14, 2009
Remember, a relay is operated by value of coil-24vac 24vdc 110vac, think radio shack or electrical supply store.It doesn't have to look exactly the same to work, ratings are what is important. Read what the existing relay is rated for. Explore your options, you might be suprised what you find cheap. Also try taking a look at the relay points to see if burnt. Take a look at motor connections also. Most important don't get shocked (one hand method or insulated gloves)
Posted on Aug 24, 2009
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Posted on Jan 02, 2017
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