Product Manual

Page 19 of 47
the connection. Connect the regulator to the gas bottle connection. Use a
wrench to snug up the connection.
vi. Open the Gas Bottle Valve on the cylinder of gas.
vii. Turn the Gas Flow Adjuster on the regulator so that the gas flow rate is set at
approximately 20 CFH. Make certain you are reading the correct scale on the
gauge.
NOTE: Slowly open the cylinder valve by turning it counter-clockwise until the
cylinder pressure gauge registers on the first gauge of the regulator. Turn the
adjustment knob clockwise (right) slowly to increase gas flow to 20 CFH. To
reduce the gas flow, turn the adjustment counter-clockwise (left). The gas
valve is located on the back panel of the welder and activated by the trigger.
Gas flow should be heard when the trigger is activated. No gas flow will result
in a harsh arc with excessive spatter; a smooth weld bead will be difficult to
obtain. Avoid unnecessary gas loss by closing the tank valve when finished
welding.
viii. Gas Selection
Different materials require different shielding gases when MIG welding.
(Refer to the set up chart inside the wire feed compartment.)
Mild Steel: Use 75% Argon and 25% CO2 for reduced spatter and reduced
penetration 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. (A CO2
regulator adapter will be needed.)
Stainless Steel: Use a mixed gas consisting of Helium, Argon, and CO2.
Aluminum or Bronze: Use 100% Argon.
Assembly Instructions
⚠WARNING
ELECTRIC SHOCK CAN KILL!
 Always turn the power switch OFF and unplug the power cord from the AC power source before
installing wire.
MIG TORCH ASSEMBLY
1. Locate the wing nut retaining bolt inside the front panel on the Drive System (Figure 1).
Loosen the retaining bolt.
Retaining
Bolt
Retaining
Groove