Lincoln Electric TIG 375 manual Figure B.6

B-12 OPERATION B-12

FIGURE B.6

Setup for TIG Amptrol Welding Standard Controls

AC Balance

AUTO

or

Set:

Power Switch

ON

Mode Switch

TIG

Polarity Switch

AC or DC-

More + for alum.oxide "Cleaning" w/o"Spitting" or "wetting"loss.

Balanced for equal + and - current. More - for higher "Penetration".

Min. to Max. Amptrol

Max. to Min.

Amptrol

Pulse Frequency

4-6 pps is a typical initial setting.

Set for bead shape and travel speed: Higher for thinner plate and faster travel. Lower for thicker plate and slower travel.

% On Time

40-60%is a typical initial setting.

Set for total heat of Peak current:

Lower reduces distortion and burn-thru.

Background Current

40-60%is a typical initial setting.

Set as low as will maintain a pulse arc (Will not drop below Min.Output setting.)

Local/Remote

Switch

REMOTE

Maximum Output

Set to desired max. Amptrol output level.

Minimum Output

Press Display switch

and Set to desired min. Amptrol (Start/Crater) output level.

Postflow

Set as low as required.

Higher for larger

tungsten and current.

Advanced Panel

Trigger Switch

2-STEP

Pulse Switch

ON or OFF

Downslope

ZERO

For no arc-out delay.

PRECISION TIG 375