Cebora BRAVO SYNERGIC MIG Serie Manual De Instrucciones página 12

tion (speed), serves to improve arc striking.
Using the 2 keys Q and R, the Soft Start time may be
adjusted from 0 to 1 second. The value shown on the dis-
play S is preceded by the letter (d).
5- Two-stage manual mode and 4-stage automatic
mode.
Adjust the 2 keys Q and R to select the 2-stage or 4-
stage mode.
If the welding machine is set to 2-stage manual mode,
welding begins when the button E is pressed, and stops
when it is released.
If the welding machine is set to 4-stage automatic mode,
press the torch trigger to begin welding; you may release
the trigger once the procedure has begun.
Press and release the trigger again to stop welding. This
setting is suitable for long-term welding, where the welder
may tire of holding down the torch trigger. The value
shown on the display S is preceded by the symbols (2T
and 4T).
S- Display.
Using the manual program 00 the instrument displays the
wire speed in meters per minute before welding, and the
current while welding.
Using the synergic programs it always displays the cur-
rent.
As described in the paragraphs above, the following may
be displayed on the instrument before beginning to weld:
the program being used, the spot welding time, the pause
time, the Burn-Back time, the recommended thickness,
the Soft Start function, the speed set on the motor of the
PULL 2003, and the post-gas time.
5 WELDING
5.1 Installation
Make sure that the wire diameter corresponds to the diam-
eter indicated on the wire feeder roller, and that the selected
program is compatible with the material and type of gas. Use
wire feeder rollers with a "U"-shaped groove for aluminum
wires, and with a "V"-shaped groove for other wires.
5.2 THE MACHINE IS READY TO WELD
When using the Pull-2000 or Spool-Gun torch, follow the
instructions enclosed.
• Connect the earth clamp to the workpiece.
• Set the switch N to 1.
• Remove the gas nozzle.
• Unscrew the contact tip.
• Insert the wire in the wire liner of the torch, making sure that
it is inside the roller groove and that the roller is in the correct
position.
• Press the torch trigger to move the wire forward until it
comes out of the torch.
• Caution: keep your face away from the gun tube
assembly while the wire is coming out.
• Screw the contact tip back on, making sure that the hole
diameter is the same as that of the wire used.
• Assemble the gas nozzle.
12
5.3 WELDING CARBON STEELS WITHOUT GAS PRO
TECTION. (only for Arts. 572 and 573).
Make sure that the cables are properly inserted on the ter-
minal board, so that the poles match correctly (only for Art.
572 and 573, see figure 4 ).
To attain well connected and protected welds, always work
from left to right and top to bottom. Remove all waste at the
end of each welding session.
The flux-cored wire to be used is our Art. 1587, Ø 0.9mm.
5.4 WELDING CARBON STEELS WITH GAS
PROTECTION.
Make sure that the cables are properly inserted on the ter-
minal board, so that the poles match correctly (only for Art.
572 and 573, see figure 5 ).
In order to weld these materials you must:
• Use a welding gas with a binary composition, usually
ARGON + CO2 with percentages of Argon ranging from
75% up. With this blend, the welding bead will be well joint-
ed and attractive.
Using pure CO2 as a protection gas will produce narrow
beads, with greater penetration but a considerably increase
in splatters.
• Use a welding wire of the same quality as the steel to be
welded. It is best to always use good quality wires, avoiding
welding with rusted wires that could cause welding defects.
• Avoid welding rusted parts, or those with oil or grease
stains.
fig.5
fig.4