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SA 200 68. No weld output

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发表于 2021-8-31 22:19:15 | 显示全部楼层 |阅读模式
Yep, I have read alot on here for looking into this, no luck.I have output at the 110 recepticle. But no power at the welding leads. Is there a separation for power or should I be troubleshooting connections?I tried flashing and there is a small ammount of magnitism there but very little. Do I need more DC power? Should I leave it hooked up longer? I did this off a 600 amp car battery. I dont get much spark flashing.I have replaced the reostat and unless I hooked the wires up backwards, It should be fine. ( there is only two wires to the reostat, right)Any help would be great.WHAT DOES NOT KILL US, MAKES US STRONGER...http://www.myspace.com/painter22
Reply:Well, I cant figure it out. I have 58 volts at the leads and full 120 at the recepticle. No spark at all. I did an oams test on the blue and grey wires disconnected and across the two with 38. I havent had much luck at finding a wire diagram for this machine to see if a wire was hooked up wrong. (Someone had started to restore this machine befor me.) I can find ones with a pc board. Those show 4 small wires coming out of the generater and mine has 5. And one of them goes to the pos lead. You got me.I am taking it to a guy that may know tomorrow.WHAT DOES NOT KILL US, MAKES US STRONGER...http://www.myspace.com/painter22
Reply:troyboy,The 110v at the auxiliary receptical says the exciter armature and coils are doing their part and functioning properly.  Now you need to check to see if that voltage is getting through the rheostat and to the main generator shunt coils - basically checking the condition and resistance of the rheostat (64ohms) and associated wiring.  And you'll need to check the main shunt coils resistance (46ohms cold)and the condition of the main brushes and armature for dirty/tarnished commutator and armature resistance.  If the unit produces 100/115v at the auxiliary receptical but won't weld it's an indication of a bad main generator shunt coil.If you're going to own an SA200, you need to go to weldmart.com and request their free CD on the Lincoln SA-200/SA250 which is packed with information on the welder and drivers of these units.MM200 w/Spoolmatic 1Syncrowave 180SDBobcat 225G Plus - LP/NGMUTT Suitcase WirefeederWC-1S/Spoolmatic 1HF-251D-1PakMaster 100XL '68 Red Face Code #6633 projectStar Jet 21-110Save Second Base!
Reply:I took the machine to a mechanic, He looked it over and could not find the problem. He said he thought it is probably a loose wire inside the generator.I was about to sell the machine back and take a loss on all the work I did to it.After hunting for a wire scematic for it with no luck, untill yesterday, (All the manuals show an electric idler and 4 wires coming out, mine has 5  or they dont show a diagram at all) I looked it over with a mirror and it just looked great. I had a hard time thinking it was fried.I found this and the wires were not hooked up on the machine as this diagram shows so I took a chance and to my surprise, It welds!I just thought Id get this up here for others to use.Credit to who ever drew this, thank you.I will get a better pic of the machine today and I hope I can get it on the truck..... Attached ImagesWHAT DOES NOT KILL US, MAKES US STRONGER...http://www.myspace.com/painter22
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