19
IT
AL
IA
NO
FIGURE 1
1. TIMER SPOT:
Sets the maximum welding
time from 0 to 20 seconds (if the torch button is
kept pressed for a longer period, the welding
duration is automatically interrupted)
2. DISPLAY FOR VISUALISING the value of
the welding current or voltage:
Press button 3
to switch-over between the current and voltage
value.
3. VOLTAGE/CURRENT SWITCH:
see point 2
4. WIRE FEED BUTTON:
Allows the welding
wire to be fed without pressing the torch button.
5. 4T LED:
this light turns on when the machine
is operating in 4T mode.
6. 2T/4T OPERATING MODE SELECTOR:
When the 2T (two-stroke) mode is selected,
press the torch button to start the welding
process and wire feed.
When the 4T (4-stroke) mode is selected, press
the torch button to start the welding process and
wire feed, and press this button again to stop the
welding process.
7. BURN BACK:
Accurately adjusts the time dur-
ing which the current is maintained in the weld-
ing circuit after the torch button has been
released (this allows safely separating the elec-
trode from the workpiece).
This adjustment must be made using a screw-
driver, preferably in plastic (turn in a clockwise
direction to increase the time).
8. SOFT START:
Sets the departure ramp of the
wire speed: use a screwdriver (preferably in
plastic) to set the time of the ramp (turn in a
clockwise direction to increase the time).
9. WIRE SPEED CONTROL:
Regulates the out-
going speed of the wire by controlling the motor
speed.
10. MACHINE IN OPERATION INDICATING
LIGHT
11. THERMAL PROTECTION INDICATING
LIGHT:
Turns on when the machine is overheat-
ing and the exit is interrupted. This usually
occurs if the intermittence factor of the machine
is exceeded. Make sure the air grills positioned
on the back and front of the machine are not
obstructed and leave the machine running to
allow the internal components to cool down; nor-
mal welding operations can be resumed when
this LED turns off.
If the welding machine is equipped with a
cooling unit, the LED may also turn on if the
cooling liquid does not circulate correctly
(see paragraph 14).
12. ON-OFF SWITCH:
Turns the machine on
and off
13. WELDING LEVEL SWITCH:
Allows select-
ing the welding current according to the thick-
ness of the material to be welded.
14. SWITCH FOR CHANGING THE WELDING
CURRENT RANGES:
TM 230, 260:
not present
TM 300, 350, 320W, 360W:
- in the MIN position, turn switch
13
to move the
welding current from the minimum value to the
value halfway between the minimum and maxi-
mum values.
- in the MAX position, turn switch
13
to move the
welding current from the halfway value to the
maximum value.
The combination of the 10 positions of switch
13
and 2 positions of switch
14
allows selecting
from 20 possible welding currents.
TM 420W, 550W, 650W:
- in the MIN position, turn switch
13
to move the
welding current from the minimum value to one-
third of the maximum value.
- in the MED position, turn switch
13
to move the
welding current from one-third of the maximum
value to two-thirds of the maximum value.
- in the MAX position, turn switch
13
to move the
welding current from two-thirds of the maximum
value to the maximum value.
The combination of the 10 positions of switch
13
and the 3 positions of switch
14
allows selecting
from 30 possible welding currents.
15a. GROUND CONNECTOR:
The mini-
mum inductance value is inserted when the
negative welding cable is connected to this
connector.
Only use this connector (which guarantees the
best performances) during spray-arc welding
(see paragraph
10
).
15b. GROUND CONNECTOR:
A higher induc-
tance value is inserted when the negative weld-
ing cable is connected to this connector.
Only use this connector when the machine is
operating in short-arc mode (see par. 10).
15c. GROUND CONNECTOR (only for TM
420W, 500W, 650W):
The highest inductance
value is inserted when the negative welding
cable is connected to this connector.
Only use this connector when the machine is
operating in short-arc mode (see par.10).
16. GROUND CONNECTOR:
Allows connecting
the negative cable to the workpiece
(TM230,
TM260 and TM300)
.
РУ
СС
КИ
Й
ES
PA
ÑO
L
FR
AN
ÇA
IS
DE
UT
SC
H
EN
G
LI
SH
