D- Earth sockets.
Sockets to which to connect the earth cable.
4.2 CONTROLS ON GENERATOR REAR PANEL
E
H
F
G
Fig. 7
E - 230V power supply socket.
440 W max. power. For cooling unit only. (Warning: Do
not connect other equipment to this socket.).
F - 6-pin socket connector.
For the 6-pin plug connector on extension lead.
G - Socket.
For the extension lead power supply connector ('+' pole).
H - Socket.
For connection to the safety device on the cooling unit.
N.B. If no cooling unit is used with the machine, plug
the connector supplied with the machine into the
socket H.
12
5 WELDING
5.1 Installation
Make sure that the wire diameter corresponds to the diameter
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
• Connect the earth clamp to the workpiece.
• Set the switch Q 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.
5.3 WELDING CARBON STEELS WITH GAS
PROTECTION.
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
jointed 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.
5.4 WELDING STAINLESS STEEL
Series 300 stainless steels must be welded using a
protection gas with a high Argon content, containing
a small percentage of O2 or carbon dioxide CO2
(approximately 2%) to stabilize the arc.
Do not touch the wire with your hands. It is important
to keep the welding area clean at all times, to avoid
contaminating the joint to be welded.
5.5 WELDING ALUMINUM
In order to weld aluminum you must use:
• Pure Argon as the protection gas.
• A welding wire with a composition suitable for the base
material to be welded.
• Use mills and brushing machines specifically designed
for aluminum, and never use them for other materials.