10
NOTE:
Slowly open the cylinder valve by turning it counterclockwise until the cylinder pressure gauge registers
pressure increase on the first gauge of the regulator. Turn the adjustment knob clockwise (to the right)
slowly to increase gas flow to 570 lit./min. To reduce the gas flow turn the adjustment counterclockwise
(to the left). The gas inlet valve is located on the back panel of the welder and activated by the trigger
on the torch. Gas flow should be heard when the trigger is activated. No gas flow will result in a harsh
arc with excessive spatter, and smooth weld bead will be difficult to obtain. Avoid unnecessary gas
loss by closing the tank valve when finished welding.
6.3 Gas selection
Different materials require different shielding gas when MIG welding; refer to the set up chart provided
inside the wire feed compartment.
Mild steel
: Use 75% Argon and 25% CO
2
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 100% CO
2
for deeper penetration but increased spatter.
Stainless steel
: use gas mixture consisting of Helium, Argon and CO
2
gases.
Aluminium or bronze
: use 100% Argon gas.
Summary of Contents for MIG 180-5
Page 20: ...22 C Lift the welding torch to the normal position to initiate the arc and start welding ...
Page 22: ...24 Spare parts listing ...
Page 49: ...51 Κατάλογος ανταλλακτικών ...
Page 74: ...76 Sklopni crtež rezervnih delova ...
Page 99: ...101 Sklopni crtež rezervnih delova ...
Page 127: ...129 Skica notranjosti naprave ...