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Gas selection.
Different materials require different shielding gas when MIG welding, refer to
the set up chart inside the wire feed compartment.
Mild steel: Use 75% Argon and 25% for reduced spatter and reduced pene-
tration for thinner materials. Do NOT USE Argon gas concentrations higher
than 75% on steel. The result will be extremely poor penetration, porosity, and
brittleness of weld.
Mild Steel: Use CO2 for deeper penetration but increased spatter.
Stainless steel: Use a mixed gas consisting of Helium, Argon and CO2. Alumi-
num or bronze: Use 100% Argon
Installation of Wire Spool
Open the turning plate of the machine, rotate the adjusting nut on the wire
shaft anti-clockwise to remove it from the wire spool screw, and then take
down the wire spool block seat; Let the inner hole of the wire spool which
is equipped with wire cover the end of block seat in the wire spool(100m or
200mm wire spool will be chosen )
Then install the wire spool block seat, put the wire spool block seat to the
other hole of the wire spool inner hole;
After the installation of wire spool, rotate clockwise the adjusting nut to be
re-installed in the wire spool nut;
higher of the pressing pressure for the adjusting nut, then the greater of the
wire spool rotating resistance. On the opposite, the the smaller the pressing
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