MASTERWELD
200
AC/DC
E
E
n
n
g
g
l
l
i
i
s
s
h
h
1
1
1
1
Release (2T) the button to start the process of
completing the weld.
The current goes to the FINAL CURRENT value set in a
period equal to the DESCENT RAMP time (adjustable).
The electric arc goes out.
The supply of gas continues for a period equal to the
POST-GAS time (adjustable).
13.1.2
4
T
L
IFT
-A
RC
W
ELDING
Touch the piece being worked with the electrode of the
torch.
Press (1T) and release (2T) the button of the torch.
Release the torch slowly to strike the arc.
The WELDING CURRENT goes to the value set, carrying
out an ASCENT RAMP if necessary (adjustable time).
Press (3T) and keep the button held down to start the
process of completing the weld.
The current goes to the FINAL CURRENT value set in a
period equal to the chosen DESCENT RAMP time
(adjustable).
The electric arc stays lit, and is supplied by a current
equal to the FINAL CURRENT (adjustable).
Under these conditions, it is possible to carry out the
closing of the weld bath (CRATER FILLER CURRENT).
Release (4T) the button to cut off the arc.
The supply of gas continues for a period equal to the
POST-GAS time (adjustable).
13.1.3
2
T
H
F
W
ELDING
Bring the torch near to the piece to be welded, keeping
the point of the electrode 2 or 3 mm away from the piece
itself.
Press (1T) and keep the button for the torch held down.
The arc strikes without contact with the piece, and the
voltage discharges (HF) automatically stop.
The WELDING CURRENT goes to the value set, carrying
out an ASCENT RAMP if necessary (adjustable time)
Release (2T) the button to start the process of
completing the weld.
The current goes to the FINAL CURRENT value set in a
period equal to the chosen DESCENT RAMP time
(adjustable).
The electric arc goes out.
The supply of gas continues for a period equal to the
POST-GAS time (adjustable).
13.1.4
4
T
H
F
W
ELDING
Bring the torch near to the piece to be welded, keeping
the point of the electrode 2 or 3 mm away from the piece
itself.
Press (1T) and release (2T) the button of the torch.
The arc strikes without contact with the piece, and the
voltage discharges (HF) automatically stop.
The WELDING CURRENT goes to the value set, carrying
out an ASCENT RAMP if necessary (adjustable time).
Press (3T) and keep the button held down to start the
process of completing the weld.
The current goes to the FINAL CURRENT value set in a
period equal to the chosen DESCENT RAMP time
(adjustable).
The electric arc stays lit, and the supplied current is equal
to the FINAL CURRENT (adjustable). Under these
conditions, it is possible to carry out the closing of the
weld bath (CRATER FILLER CURRENT).
Release (4T) the button to cut off the arc.
The supply of gas continues for a period equal to the
POST-GAS time (adjustable).
13.1.5
B
I
-L
EVEL
W
ELDING
Bring the torch near to the piece to be welded, keeping
the point of the electrode 2 or 3 mm away from the piece
itself.
Press (1T) and release (2T) the button of the torch.
The arc strikes without contact with the piece, and the
voltage discharges (HF) automatically stop.
The WELDING CURRENT goes to the value set, carrying
out an ASCENT RAMP if necessary (adjustable time).
Press and immediately release the torch button to go on
to the SECOND WELDING CURRENT. The button
should not be kept pressed for more than 0.3 seconds,
otherwise the phase will start for the completion of the
weld. By pressing and immediately releasing this button,
you can return to the WELDING CURRENT.
Press (3T) and keep the button held down to start the
process of completing the weld.
The current goes to the FINAL CURRENT value set in a
period equal to the chosen DESCENT RAMP time
(adjustable).
The electric arc stays lit, and the supplied current is equal
to the FINAL CURRENT (adjustable). Under these
conditions, it is possible to carry out the closing of the
weld bath (CRATER FILLER CURRENT).
Release (4T) the button to cut off the arc.
The supply of gas continues for a period equal to the
POST-GAS time (adjustable).
13.1.6
S
POT
W
ELDING
All our generators TIG HF have been provided with the
spot-welding function. After having switched the machine
to 2T HF, set the final welding current to a value close
but not equal to the welding current and set the desired
spot-welding time on the descent ramp time.
Put the torch close to the workpiece to be welded,
leaving a distance of 2 or 3 mm between the electrode tip
and the workpiece.
Press (1T) and release (2T) the torch button.
The arc is struck without touching the workpiece and
sparks (HF) will automatically stop.
The WELDING CURRENT will reach the value
programmed; the arc will be maintained for as long as the
time set on DESCENT RAMP TIME until reaching the
value set on FINAL CURRENT.
Gas is fed out for as long as the time set on POSTGAS
(adjustable).
• S4:
Welding mode selection key.
Each time the key
is pressed it is possible to move from one welding mode
to another only when they are not in the process of
welding.
If the led next to the symbol is on, the selection is
confirmed.
The welding modes which can be selected are:
Summary of Contents for 200AC/DC
Page 38: ...MASTERWELD 200 AC DC 3 35 5 Fig 19...
Page 39: ...MASTERWELD 200 AC DC 3 36 6 Fig 20...
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