79 sa 200 Redface rpm adjusting.

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I've read a little about adjusting the rpms with a volt reg. and I've seen about 80 volts at idle however , where should I have my dials when adjusting this?
Reply:If you are adjusting your welder to change your weld arc. Just make small changes at a time.Then weld a little until you find the spot you like.
Reply:Well for one if it's a 79 it's not a Redface. For two you adjust your low idle by plugging your volt meter in the auxiliary outlet and set the low idle by adjusting the stop screw on the carb and adjusting the throttle linkage bar.  The to set the high idle set the machine on high idle and use the adjustment screw on the governor to adjust your Rpms til you get the voltage you want on your volt meter.Last edited by Tuscany; 05-24-2012 at 11:15 AM.1973 Lincoln SA 200, Already replaced shunt coils, Idle board (SOLD)1984 Miller Dialarc 250HF, Miller water cooler, 250 AMP water cooled torch, you know the worx.
Reply:This is the set screw on a hoof governor.

Set screw on a pierce governor.

1973 Lincoln SA 200, Already replaced shunt coils, Idle board (SOLD)1984 Miller Dialarc 250HF, Miller water cooler, 250 AMP water cooled torch, you know the worx.
Reply:It's a 79 blackface with a Redface armature. What voltage should I have coming out of my aux plug in?
Reply:I run mine down to around 57 - 58 on low idle and 117 on high idle.1973 Lincoln SA 200, Already replaced shunt coils, Idle board (SOLD)1984 Miller Dialarc 250HF, Miller water cooler, 250 AMP water cooled torch, you know the worx.
Reply:Ok, thanks. I will try that when I get home. Hopefully I can plug in because I have a gfci aux plug in with the white protectors in the slots.
Reply:Does it matter where I have my range and my fine current?
Reply:Ok, I set my aux volts to about 53v and it sounds like its running at full throttle , this can't be right?
Reply:There are many ways to set rpms. Check your voltage on the output studs. Dont worry about how many volts  you have on low idle, your grinders run with the machine on high idle. Just adjust your low idle jet and stop screw so that your rain cap dances and pops. but not too low to where you cant strike an arc. This will save you on fuel, not like you will let that machine idle down with all those rods u will be burning though, huh.

Then adjust your plunger via the linkage 1/8 away from bottomed out. in other words extend the plunger all the way into the solenoid then back it off 1/8. This will allow your Machine to hotstart when i strike an arc. Set your high idle with a voltmeter on VDC to about 90 ish OCV or to your liking then check your aux... Should be 110ish. Dont adjust too high, about 93 max, or you run the risk of  unspooling  your armeture. You should check the VDC at the output posts and the selector on 190 and fine tune on 100. This is how an old timer showed me how to set mine up, so if something is unclear or incorrect, please let me know. Hope this helps.Last edited by Coaltrain; 05-24-2012 at 07:57 PM.Reason: Spellcheck
Reply:Well your telling him to set his high idle to 90-93 when what you are talkin about is checking the ocv at the output studs. He wants to have his high idle set to no higher than 120 volts or it will burn up the shunt coils then check offs the way you said. Also check ocvs in all other range gears as well. All he has to do to set high idle is to loosen the nut on the set screw and turn it in or out the tighten up the lock nut. And your done just watch volts on the volt meter while doing so. Also as coaltrain said dont set low idle too low or the voltage will be to low for the reed switch to tell an arc is trying to be struck. Set it between 57-60 on the low end no lower.1973 Lincoln SA 200, Already replaced shunt coils, Idle board (SOLD)1984 Miller Dialarc 250HF, Miller water cooler, 250 AMP water cooled torch, you know the worx.
Reply:O and also make sure all your linkage and hardware,on your Gov is clean and free of dirt and gunk. And clean out your plunger and solenoid while ur at it, dirt and dust likes to pack in there over time
Reply:Right Tuscany, i have my ocv set on about 89-90 and i have 110 at the plug.
Reply:Ok so I set my low at 58 and high idle at 68volts to the aux, and at high idle it just sound like the rpms r too high, It sounds way louder than the 200's that the guys run at work. Coming from my lead posts at 190 range 100ocv at low idle I'm getting 44 volts..And 55 at high.
Reply:So im assuming its not welding either. Id would consult a good mechanic before going any further or running that machine.
Reply:

Originally Posted by JLGaeta1985

Ok so I set my low at 58 and high idle at 68volts to the aux, and at high idle it just sound like the rpms r too high, It sounds way louder than the 200's that the guys run at work. Coming from my lead posts at 190 range 100ocv at low idle I'm getting 44 volts..And 55 at high.
Reply:It welds great, just sounds like the rpms are too high. I burned a 5/32 rod at 100 ocv burned it like nothing but sounds like the governor kicks in.
Reply:What gear are you in while weldig that 5/32? Also your ocvs are the voltage readings on the welding lead studs without the machine being under a load. I'm wondering though have you tried hooking a grinder up to your aux outlet and leaving the machine on auto idle and see if it kicks up and the grinder comes up to full speed?1973 Lincoln SA 200, Already replaced shunt coils, Idle board (SOLD)1984 Miller Dialarc 250HF, Miller water cooler, 250 AMP water cooled torch, you know the worx.
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Reply:the machine idles up with the grinder and the grinder seems to go full speed, and I take back what I said about it welding great....it welds great for about a minute then idles down while i'm welding.. then I have to re-strike...maybe im not doing this right..im a lil confused about the OCV & VDC? This is what I am doing:Fire up the machine- high idle for about 5 seconds then idles down.plug my volt meter in to the aux( its a dual plug GFCI) and it reads 58 Voltshit the high idle switch and it jumps to about 67volts ( I wrenched down on the high idle screw till it was almost all the way in and I think it only jumped up to 80 volts but I backed off of it because it just sounded like it was revving too high)then I checked the volts coming out of the lead studs at idle with it set at 190-120 with the fine current at 100 and it was at 44voltshit the high idle switch and they jumped to about 58volts.
Reply:Yeah that's not good check the brushes on the exciter pull them out and check their wires and take the armature nut off and slide the excited armature out and check for broken or loose wire and look at your excited coils as well. Make sure the brushes aren't chipped cracked or stuck in their holders and ride the face of the exciter communtator completely. Clean the communtator with a communtator stone or very fine grit sand paper 200 or more grit. Then try it again.  Also you could try flashing the Exciter with a car battery. Search it on here but I would try what all I just listed first then do that.1973 Lincoln SA 200, Already replaced shunt coils, Idle board (SOLD)1984 Miller Dialarc 250HF, Miller water cooler, 250 AMP water cooled torch, you know the worx.
Reply:

Originally Posted by Tuscany

Yeah that's not good check the brushes on the exciter pull them out and check their wires and take the armature nut off and slide the excited armature out and check for broken or loose wire and look at your excited coils as well. Make sure the brushes aren't chipped cracked or stuck in their holders and ride the face of the exciter communtator completely. Clean the communtator with a communtator stone or very fine grit sand paper 200 or more grit. Then try it again.  Also you could try flashing the Exciter with a car battery. Search it on here but I would try what all I just listed first then do that.
Reply:Clean it and check that the brushes are in good shape and not stuck and move freely in their holders.1973 Lincoln SA 200, Already replaced shunt coils, Idle board (SOLD)1984 Miller Dialarc 250HF, Miller water cooler, 250 AMP water cooled torch, you know the worx.
Reply:

Originally Posted by JLGaeta1985

I've read a little about adjusting the rpms with a volt reg. and I've seen about 80 volts at idle however , where should I have my dials when adjusting this?
Reply:do they put gfci on machine with DC?www.urkafarms.comThis issue has been debated on here and elsewhere and it appears there is no such animal.https://www.electriciantalk.com/thre...circuit.19323/Even so more than one weldor has been required to install a GFCI receptacle on his DC only SA200/250 to satisfy an uninformed safety person in order to get on a job.MM200 w/Spoolmatic 1Syncrowave 180SDBobcat 225G Plus - LP/NGMUTT Suitcase WirefeederWC-1S/Spoolmatic 1HF-251D-1PakMaster 100XL '68 Red Face Code #6633 projectStar Jet 21-110

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