D.C
.
A.C.
(frequency 6o Hz)
Pos. Max Penetration
Pos. Balanced zero
Pos. Max Cleaning
Electrode Type
Tungsten
Tungsten
Tungsten
Tungsten
Tungsten
Tungsten
Tungsten
Thorium 2%
Pure
Zr 0,8%
Pure
Zr 0,8%
Pure
Zr 0,8%
ø in
Red
Green
White
Green
White
Green
White
1.0 - 0,040”
5A - 80A
20A - 60A
20A - 80A
20A - 30A
20A - 50A
20A - 30A
20A - 40A
1.6 - 1/16”
70A - 150A
50A - 100A
70A - 150A
30A - 60A
50A - 80A
20A - 40A
30A - 60A
2.4 - 3/32”
150A - 250A
100A - 160A
140A - 235A
60A - 120A
80A - 140A
40A - 100A
60A - 120A
3.2 - 1/8”
200A - 350A
150A - 210A
225A - 325A
80A - 160A
100A - 180A
60A - 140A
80A - 160A
4 - 5/32”
300A - 400A
200A - 275A
300A - 400A
100A - 240A
150A - 280A
80A - 200A
150A - 250A
4
P - SELECTOR
When this button is pressed, the LEDs light in suc-
cession:
Warning
: only those LEDs that refer to the chosen welding
mode will light; i.e., in continuous TIG welding the LED
U
,
representing the pulse frequency, will not light.
Each LED indicates the parameter that may be adjusted by
means of the knob
AA
while the LED itself is lit. Five seconds
after the last variation, the LED involved will shut off; the
main welding current will be displayed, and the correspon-
ding LED
T
lights.
Q - Led
Pre gas. this LED lights on when the pre-
gas function is active (0,05-3 sec.).
S - LED
Slope up. This is the time in which the cur-
rent, starting from the minimum, reaches
the set current value. (0-10 sec.)
T - LED
Main welding current.
V - LED
Second level of welding or base current.
Can not exceed main welding current value.
U - LED
Pulse frequency (0.5-20 Hz). This is the
number of times per second that the wel-
ding current achieves main welding current value.
Led R.
t/T ratio (see fig. 2).
The
t
time may vary from 40 to 60 % of the
T
total time. It controls how long the main welding current
level is mantained before it drops to the base current value -
40 to 60% of total time T.
W - LED
Slope down. This is the time in which the
current reaches the minimum value and the
arc shuts off. (0-10 sec.)
X - LED
Post gas. Adjusts the time gas flows after
welding ends. (0-30 sec.)
AF - AC/DC SELECTOR SWITCH
AE - 14-PIN CONNECTOR
The following remote controls are connected to
this connector:
a) foot control
b) torch with start button
AD - GAS FITTING
This is where the gas hose of the TIG welding
torch is to be connected.
AB
- Negative output terminal (-)
AC
-Positive output terminal (+)
3 TIG WELDING
By selecting, by means of the AC/DC switch, TIG AC wel-
ding mode
you may weld aluminium, aluminium
alloys,brass and magnesium, while selecting TIG DC
allows you to weld stainless steel, iron and copper.
This welding machine is suitable for welding stainless steel,
iron, or copper using the TIG procedure.
Connect the earth cable connector to the positive pole (+) of
the welding machine, and the clamp to the workpiece as
close as possible to the welding point, making sure there is
good electrical contact.
Connect the power connector of the TIG torch to the nega-
tive pole (-) of the welding machine.
fig. 2
Table A
Содержание TIG250
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