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 04-19-2009, 18:37 Post: 162167
earthwrks

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 Portable welder/generator runs but no power or weld

I have a Lincoln Electric PowerArc 5000. It has a 11 HP Industrial Briggs & Stratton engine. Engine runs, but the welder generator won't make any power. Just before it stopped working the engine lugged like it never has before.

The service manual says the W/G (welder/gen.) requires 4-7 volts to send a "flash" of power to the W/G circuit. The power comes directly from the engine's Magnetron ignition coil and is picked up at the low-oil switch. Voltage was tested at about 3.5 volts so I replaced the Magnetron and now it's about 2.7, still not enough--even when not connected to the low oil switch. The local engine shop said the Magnetron doesn't MAKE power, even after showing them the circuit diagram (just in case anyone feels that the ignition coil isn't used for that purpose).

My buddy and I went through and tested everything the troubleshooting guide said to look for--everything is within spec. excpet for the Magnetron not making at least 4 volts. We were not able to test the capacitor. And I replaced the diode (bridge rectifier). The technician at Linclon said the GFI outlet is designed to not allow power to be made if there is less than 4 volts--how, I do not know, but I replaced it anyway.

Any ideas?






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 04-20-2009, 09:21 Post: 162171
Murf

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 Portable welder/generator runs but no power or weld

Jeff, I'm not sure about you're particular unit, but do know that some gensets use a permanent magent setup to excite the field coils while others, like yours, use a power source such as the magneto to provide the starting power.

If your magneto is not making power I would suggest, especially if it's sat a while, that there was surface rust on the mag & coil and turning it over pushed the two out of range of each other. Since it is only the motion in close proximity to each other that generates the electricity the power drops fast if they move away from each other.

Take it apart and use some emery cloth on both to get them really clean, then reset them with the proper gap between them and see if it makes the proper voltage then.

Best of luck.






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 04-20-2009, 12:05 Post: 162179
AnnBrush



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 Portable welder/generator runs but no power or weld

Take it to your local industrial electric shop, they will tell you pretty rapidly whats wrong and then you can assess what to do.
Cheers Ann






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 04-20-2009, 17:40 Post: 162192
earthwrks

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 Portable welder/generator runs but no power or weld

I went to the local authorized repair shop today. $58 check-out fee. Not too bad. They feel at this time the stator/armature shorted out --which isn't made anymore; if it's the windings that's $800 plus labor. These guys handle the Ford Mo Co account so I hope they know what they're talking aboot, eh?






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 04-23-2009, 11:55 Post: 162262
earthwrks

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 Portable welder/generator runs but no power or weld

Well---they called and said it'sa $800 stator winding. Another $350 to replace it. A brand new unit is the same price for parts and labor. Ridiculous. SO off I got o se if it can be rewound.






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 04-23-2009, 21:49 Post: 162272
earthwrks

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 Portable welder/generator runs but no power or weld

A local coil rewinder wants $450 and can have it a few days. Going with them.






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 04-23-2009, 22:07 Post: 162273
kwschumm



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 Portable welder/generator runs but no power or weld

Don't know if that's a good price or not, but it reminds me of my life as a slot car racer as a kid. I used to wind, epoxy, time and balance my own armatures. Those were the days Smile






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 04-24-2009, 07:17 Post: 162282
earthwrks

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 Portable welder/generator runs but no power or weld

Well it's $450 MORE than I want to pay Laughing out loud, but considering it's only half of what a new parts cost it seems like a bargain. It appears to be relativley easy to get the generator apart---I hope.






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 04-24-2009, 13:53 Post: 162288
kthompson



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 Portable welder/generator runs but no power or weld

Sorry for the problem EW. Does remind me when you buy the price seems real high, when you are selling the price is too low. Just think you are wealthy per DC these days and they may send you a ribbon or something for your contribution to stimulate the economy. Now, donít you feel much better? Smile






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 04-24-2009, 22:01 Post: 162298
earthwrks

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 Portable welder/generator runs but no power or weld

Good ol' Kenny. Hey, I smell (SC) smoke---is THAT coming from your house?






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Discussion Boards > Active Subjects > Messages as Posted > Welding Forum

Thread 162167 Filter by Poster:
AnnBrush 1 | earthwrks 6 | kthompson 1 | kwschumm 1 | Murf 1 |




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