New 2016 250EX inconsistent start and frequency

[christian]

Gee,

I'd skip grounding through the vise for a while, and ground directly to your work piece until you get settled in with your machine.

[ozcheek]

Will do, thanks

[ozcheek]

Good idea, I'm used to the behavior of the other machines, need to remember,not the same, thanks

[performance]

The sound of the frequency changes with increased amperage by the nature of it. It gets louder and more aggressive. I don't think you can tell merely based on sound. This is happening so fast that sound is only a certain pitch and it will increase in intensity as you go down on the pedal.

[ozcheek]

Ok, reduced the LPM to 10, connected ground to work, next size larger cup, verified balance below 30. Frequency 120
Amps 70. All other controls off. Same scenario. One more event, tungsten balls immediately and will recede in a short time as if the balance is cranked up. I'm beginning to believe there is an issue with the machine.

[christian]

Well,

"LPM" may be a problem. 10 LPM is about 20 CFH, I believe, which is high for 70 amp, I think. But it also sounds like you have your AC balance backwards. And the Miller and Lincoln units do read opposite, I believe.

I'll bet there's no issue with the machine. When I first got my 210EXT about 6 months ago, I had a momentary issue with HF starts, and even called Everlast Support, which was probably Mark that I spoke to, and the issue was resolved in two minutes, as it had to do with a machine setting and too high a flow of Argon on a necked-down cup, as I was using lowered amps. I mean, I kept welding, with just scratch starts until I got the call back from my message 15 or 20 minutes earlier.

Since that time I've never looked back, so to speak, and think the 210EXT is best TIG welder in it's class on planet Earth.

[christian]

Also,

The 250EX is new from Everlast or Amazon I'll presume. But you mention a Radnor torch and water cooler as well. Is the torch and water cooler new from Everlast as well?

If not, I'd slap the new gas-cooled torch on the machine, just to get a baseline of good functioning with the original equipment.

[performance]

Sounds as if you have your torch in the positive rather than where it should be (in the negative). Or you have some bad gas. The unit gauge should read now in CFH, not LPM fwiw.

[ozcheek]

Good idea, I'm used to the behavior of the other machines, need to remember,not the same, thanks