newbie with questions

[rob 5711]

Hi everyone I just picked up an old miller model 250 ac / dc-hf tig-metallic arc welder. Everything seems to work good except for when it comes to breaking the arc. When i let off the finger control it continues to weld almost like the scratch start doesn't shut off when hf is on. If i dont have a ground it shuts off but with a ground it just keeps welding. Plus the tungsten is always hot even without the finger control engaged, is that the way this old machine operates i wouldn't think so. Then again I really dont know I've never used a welder this old. Also would anyone happen to have an owners manual for this dinosaur serial number 70-5463-66? Any and all help will be much appreciated
Thanks Rob Demattio

[shovelon]

Hi everyone I just picked up an old miller model 250 ac / dc-hf tig-metallic arc welder. Everything seems to work good except for when it comes to breaking the arc. When i let off the finger control it continues to weld almost like the scratch start doesn't shut off when hf is on. If i dont have a ground it shuts off but with a ground it just keeps welding. Plus the tungsten is always hot even without the finger control engaged, is that the way this old machine operates i wouldn't think so. Then again I really dont know I've never used a welder this old. Also would anyone happen to have an owners manual for this dinosaur serial number 70-5463-66? Any and all help will be much appreciated
Thanks Rob Demattio

The owners manual can be downloaded from the resources section found on the bar on the top of this page called resources.

Your machine may have 2t and 4t settings. I think if it is in 4t it takes two clicks of the button for each motion as opposed to just holding the switch down. Or the switch could be broken. Or your machine is set to panel.

[M J Mauer]

Welcome to the forum.