Powermaster 226 questions

[ole4]

I recently purchased a Powermaster 226 and this weekend finally finished setting up the cart, tank, air/argon/dryer switching and tried my first attempts at Tig welding aluminum. Considering I have not tig welded It was pretty sucessfull. I had a friend who did many years of Tig welding coaching me but inverter technology came after his welding days ended. I have a few questions about the settings for AC tig welding of aluminum. The manual that came with the welder was not very well written but the manual off the website was much better but I still have some questions.
1) AC Balance the manual says "More DCEN is preferred for cleaning oxidation in aluminum" I thought electrode negative is more penetration and positive is for cleaning? The manual goes on to say More DCEP is preferred for penetration. Is this backwards?
2) AC Balance when you go to a higher percentage rutning the dial clockwise does this give more penetration and less cleaning?
3) I am using the foot pedal so I turn the pulse current all the way down and set max current using the base current on the machine but there is also a pot on the foot pedal that seems to limit current as well, do you use both or just set foot pedal to max and use the base current setting on the machine?

[performance]

Your right...Even after proofreading the info, mistakes are sometimes made. More DCEN increases penetration. This should be to the left of the dial. More DCEP increases cleaning. This should be to the right...if things are the same as the proto versions. Its a typo...and its also the reason revisions are done. We'll make some revisions soon. Sorry for the confusion.

With the pot controller on the pedal, I believe the best policy is to set the range to maximum and use the control on the pedal to limit the amps. Although, this varies on each model, I believe this is the way this unit works. It does get confusing trying to keep up with model differences from time to time...We are in the process of standardizing the controls and control locations so that everyone can be on the same page as far as basic operation goes.