Good luck and have a wonderful day. Back to the motor shop. This wire connects to one side of the welder shunt coils there are two of them, one on one side of the housing, the other one opposite of the first. I'll go back and look more carefully at their web site. Note: a properly maintained commutator should be the color of used burnished penny.
Both measurements should be identical. Troubleshooting the Exciter Shunt Circuit The welding machine will not weld: you can run a grinder off the auxiliary power outlet, and it may or may not idle up on auxiliary demand, but it will not strike an arc. I'm wondering what this thing is worth. The coil must be replaced;. So, it would be nice to be able to predict what components are most likely to have failed before I start to take things apart. To troubleshoot the exciter shunt circuit, you need to check two components: the fine-current control rheostat and the shunt coils. The pole pieces can loose their magnetism as the unit sits idle for a long period of time, and there is no easy test to detect the loss.
Use only compressed gas cylinders If this is not possible, cover them to prevent containing the correct shielding gas for the the welding sparks from starting a fire. . Unauthorized repairs performed on this equipment may result in danger to the technician and machine operator and will invalidate your factory warranty. I know that isnt very descriptive. Now that I think about it more, there was recently a discussion either here or on sci. The resistance should be approximately 130 to 170 ohms, + or — 10%. .
Check your commutator and brushes- if them brushes get good and cruddy, they'll hang up in the holders and arc at the commutator, if this is the case you'll probably notice it as soon as you pull the commutator cover off- blackened and pitted comm. In this article, we are only going to discuss the exciter generator and exciter control circuit. This can cause the elec- trode to stub. I took time to 'Scotch Brite' the slip rings and to look at all the com bars. What this does is tell us if there is an open broken circuit.
Have the exciter checked for out of roundness. The other side of the welder shunt coil is connected by a brown wire that goes to a terminal on the reed switch, located on the reed switch mounting bar. Also, check the mica between the commutator bars- if you've got a real dusty area you might have bars that are worn with exposed mica, which will eat your brushes and cause arcing or you could also have crud accumulated between the bars, shorting them out usually it arcs over in an impressive way when you get conductive stuff between the bars. . There are two bolts holding each iron exciter pole piece in place, two on the right side and two on the left! Place one lead on a clean spot on the armature shaft if you have any doubt, clean a spot with fine emory paper or a file.
Good luck and have a wonderful day. Other brand and product names are the property of their respective companies. The whole control circuit is a series connected system. Good luck and have a wonderful day. Resistance readings: With the right brush removed from the brush holder, the following readings will tell you certain things.
I got one for my project welder, a trailer- mounted, Hercules-engined monster. . You have your wiring diagram in front of you! If successful, you will be able to use the aux. Check weld cables for loose or faulty connections. If you can find the tag on the magnet and see what kind of voltage it wants, that'll get you knowing if you've got the best generator for the job; I'm suspecting that you may not.
Board to The Lincoln problems can sometimes be traced to poor Electric Company for credit, it must be in the electrical connections. . I just didnt have 'certainty' that the schematic would be available. If the fine-current control rheostat is not defective, the next step is to check the exciter shunt coils. If you do not find any shorts to ground, it could still be defective. In my experience, I have never seen the field coil on the upper right fail--only the coil on the lower left seems to fail. D-1 Routine and Periodic Maintenance.