Lincoln Electric PRECISION TIG 275 SVM162-B Service Manual page 29

Setup for TIG Amptrol Welding
Min. to Max.
Amptrol
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.
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.)
Standard Controls
Power Switch
Mode Switch
AC Balance Polarity Switch
AUTO
AC
or
Set:
More + for alum. o xide "Cleaning"
w/o "spitting"or"wetting" loss.
Balanced for equal + and - current.
More -
for higher "P enetration".
Local/Remote
Maximum Output
Set to desired max.
Amptrol output level.
Minimum Output
Press Display switch
and Set to desired min.
Max. to Min.
Amptrol (Start/Crater)
Amptrol
Set as low as required.
tungsten and current.
Advanced Panel
Trigger Switch
Pulse Frequency
Pulse Switch
ON
% On Time
For no arc-out delay.
ON
TIG
-
or DC
Switch
REMOTE
output level.
Postflow
Higher for larger
(If used)
2-STEP
or OFF
Downslope
d d v v a a n n c c e e d d P P a a n n e e l l
ZERO