Lincoln Electric PRECISION TIG IM936 - Manual (Page 27)

B-12 OPERATION B-12
PRECISION TIG 375
Max. to Min.
Amptrol
Min. to Max.
Amptrol
Setup for TIG Amptrol Welding
Advanced Panel
(If used)
Standard Controls
Power Switch
ON
Polarity Switch
AC or DC -
Mode Switch
TIG
AC Balance
AUTO
or
Set:
More + for alum.oxide "Cleaning"
w/o "Spitting" or "wetting" loss.
Balanced for equal + and - current.
More - for higher "Penetration".
Local/Remote
Switch
REMOTE
Trigger Switch
2-STEP
Pulse Switch
ON or OFF
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.)
Downslope
ZERO
For no arc-out delay.
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.
Maximum Output
Set to desired max.
Amptrol output level.
FIGURE B.6