8
sten electrode to the workpiece, then lift it. This move must
be quick and decisive.
After starting, the current reaches the value set using knob
H
.When the trigger is released, the current begins to drop
over the "slope down" time previously set using knob
M
,
until it returns to zero.
In this position, you may connect the pedal control acces-
sory ART. 193,
D - LED. 4-stage TIG welding (automatic). Start
without high frequency.
This program differs from the previous one in that the arc is both
started and shut off by pressing and releasing the torch trigger
C - LED. 2-stage TIG welding (manual). Start
with high frequency.
To light the arc, press the torch trigger: a high voltage/fre-
quency pilot spark will light the arc.
The operating logic is the same as described for the LED
E
.
In this position, you may connect the pedal control acces-
sory ART. 193,
B - LED. 4- stage TIG welding (automatic). Start
TIG
TIG
TIG
H
G
F
E
D
A
P
S
G
I
C
L
M
B
O
Q
R
with high frequency.
This program differs from the previous one in that the arc is both
started and shut off by pressing and releasing the torch trigger
G - LED - THERMAL PROTECTION
Lights when the operator exceeds the duty cycle or
percentage intermittence admissible for the machine, and
simultaneously blocks the current output.
NOTE:
In this condition the fan continues cooling the
power source.
H - KNOB
Adjusts the welding current.
M - KNOB
Slope down. This is the time in which the current
reaches the minimum value and the arc shuts off.
(0-10 sec.)
10
MMA
TIG
115
130
70
25
50
90
A
140
5
115
135
150
75
25
50
95
0
2
3
4
5 6
7
8
9
10
