idler silenoid ,how does it operate

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got my welder running fairly good now except the idler silenoid ( electric ), I'm just trying to figure out how it works, so when starting the welder power goes to the selenoid keeping the rpm down, when striking a arc power to silenoid is release by the reed switch , releasing the selenoid and letting the welder rev up, when using the toggle switch,basicly your just cutting out the power to the selenoid letting the welder run at high rpm.Do I have this right or I'm I way off courseThankscocomunk
Reply:I would add that the governor forces the throttle open to the desired RPM when the solenoid releases. I believe the solenoid loses its ground when the arc is struck through the reed switch. I know for trouble shooting check to make sure the PC board has a good ground through the bolts that connect it to the control panel. Also check one of the wires that go to one of the spade terminals on the PC board. I forget which one. If I had to guess I would guess white. Should be easy to follow the wires from the board and see which one is grounded.http://www.facebook.com/groups/sa200weldersCurrent machines:Hobart G600 Powered by 1967 Chrysler LH-318 (Project)Hobart GF-250(Traded)68 Redface81 Blackface
Reply:I built and tested ranger 10000, it uses the same set up for controlling idle speed when the solenoid is energized, and idle speed drops. You’ll want this at 2300 rpm. The high idle speed should be 3700 to 3750 rpm. If your low idle is set to low your welder will not go to high idle automatically .