Good day,
Newbie to the TIG process so my apologies if this seems trivial...I'm having some problems figuring out the AC Balance or cleaning action of my Longevity 250 EX. How does the display correlate with cleaning? I understand the theory but don't understand the display layout. I believe the display goes from -30 to +50. So if I'm welding aluminum and the recommendation is 30% EP. How does that's correlate to the -30 to +50?