Process Selection (Sth Model Only); Lift-Arc And Tig Impulse Start Procedures - Miller Maxstar 150 S Manual De Instrucciones

4-3. Process Selection (STH Model Only)

=Light Off =Light On
3
2
1
Press & Release Press & Release

4-4. Lift-Arc And TIG Impulse Start Procedures

1 2
.
Pictorials show Lift-Arc start method − do not
use this method for TIG Impulse starts.
OM-2242 Page 14
=Light Flashing
4
Press & Release
1 − 2
"Touch"
Seconds
Do NOT Strike Like A Match!
5
6
Press & Release Press & Release
1 Process Selector Switch Pad
Use control to select required
welding process. Press switch pad
until light (LED) for desired process
is illuminated.
2 TIG Impulse Start
When selected, an impulse HF arc
starting method is activated (see
Section 4-4).
3 TIG Pulse With TIG Impulse
Start
When selected, the TIG pulse
welding process with impulse HF
start is activated.
Pulsing is the alternating raising
and lowering of the weld output at
a specific rate. To change pulse
frequency, see Section 4-5.
4 TIG Pulse With Lift-Arct
Start
When selected, the TIG pulse
welding process with Lift-Arc start
is activated (see Section 4-4).
5 Lift-Arc Start
When selected, a TIG arc starting
method in which the electrode
must come in contact with the
workpiece to initiate an arc is acti-
vated (see Section 4-4).
6 Stick (SMAW)
When selected, Adaptive Hot Start
and DIG circuitry are energized.
Lift-Arc Start
1 TIG Electrode
2 Workpiece
Touch tungsten electrode to work-
piece, hold for 1-2 seconds, slowly
lift electrode, and an arc forms.
Open-circuit voltage maybe present
before electrode touches workpiece.
TIG Impulse
High frequency starts arc when output
is enabled without making contact with
the workpiece. High frequency turns
off when arc is started.