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(17).
6.1.7 MIG/MAG WELDING
•
Connect the earth cable connector to the negative socket (8) of the
unit.
•
Connect the working cable to the positive terminal of Voltage Chan-
ge Board inside the unit side (17).
6.2 MIG/MAG AND NO GAS MANUAL WELDING
•
Before connecting the unit to the mains, verify that all the accesso-
ries are correctly installed and mounted for electric welding (torch,
shielding gas cylinder, wire spool etc ...).
•
Select Manual MIG Welding function thru the Selector Switch (4) on
the front panel.
•
Switch the unit on thru the ON/OFF switch (11) on the back side of the unit.
•
Press the torch trigger to load the wire and check that the gas comes out from the welding torch.
•
Set the welding parameters:
•
Wire feed speed with potentiometer (5).
•
Arc voltage with the potentiometer (6)
•
Bring the torch close to the workpiece and press the trigger.
•
Start the Motor Slope-Up Time (Min. to Max. speed transition
time), adjustable with the potentiometer (15) located inside the
spool compartment.
•
At the end of the the Slope-Up Time, the wire feed speed rea-
ches the value adjusted with the potentiometer (5).
•
To finish the welding, release the trigger. The arc stays on for the
burn time; this time is adjustable with the potentiometer (16).
6.3 AUTOMATIC MIG/MAG/MOG WELDING
With the MIG AUTO mode, the operator has the possibility, once a speed-voltage starting point is defined,
to change the welding current (thickness of the material to be welded) by simply acting on the wire speed
potentiometer (5). By increasing or decreasing the wire speed, the generator will automatically modify also
the voltage and as consequence the welding current.
Note: With wide variations in wire speed (left potentiometer - 5) may be necessary to adjust the voltage
(right potentiometer- 6).
•
With the regulation potentiometer (5) choose a speed for the wire that is deemed appropriate for the
thickness of the material to be welded.
•
Act on the voltage regulation potentiometer (6) to obtain the desired weld quality.
•
The AUTO Function of the generator is calibrated. Now, by turning only the wire speed potentio-
meter (5) varies the generator the voltage automatically. For every increase / reduction of the wire
speed (welding current), the operator no longer has to act continuously on the voltage regulation
potentiometer (6) (except for wide variations of the wire speed).
•
Bring the torch close to the work piece and press the trigger.
1.
Wire feeder Slope-Up Time (Min. to Max. speed transition time), adjustable with the poten-
tiometer located inside the access panel (15).
2.
At the end of the the Slope-Up Time, the wire feed speed reaches the value adjusted with the
Left knob (5).
•
To stop welding, release the trigger. The arc stays ON accordingly to the set B.B.T. (Burn back time).
B.B.T. is the amount of time that the weld output continues after the wire stops feeding. It prevents the
wire from sticking in the puddle and prepares the end of the wire for the following arc start.
6.4 ALUMINIUM WELDING
The machine will be set up as for mild steel except for the following changes:
•
100% ARGON as welding protective gas.
•
Ensure that your torch is set up for aluminium welding:
1.
The lenght of the torch should not exceed 3m (it is advisable not to use longer torches).
2.
Install a teflon wire liner with metallic terminal (copper/brass) (follow the instructions for the renewing
of the wire liner).
3.
Ensure that drive rolls are suitable for aluminium wire.
•
Use contact tips that are suitable for aluminium wire and make sure that the diameter of the contact
tip hole corresponds to the wire diameter that is going to be used.
EN-8
Figure 7
Figure 8
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