OPERATION
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(11) Remove Tip (12) Feed wire manually
(WARNING: Be sure to keep torch neck away from your eyes, face or hands as the
wire exits the swan neck!)
(13) Fit the correct sized contact tip and feed the wire through
it, screw the contact tip into the tip holder of the torch neck
and nip it up tightly.
(14) Fit the gas nozzle to the torch head.
(15) Carefully open the gas cylinder valve Set the required gas flow rate on the regulator.
(16) Select torch switch mode 2T/ 4T/S4T
(17) Select the desired MIG function, Select program number to suit the wire diameter
and gas type being used as shown on the digital meter.
(18) Set the required welding parameters to suit the material thickness being welded as
shown on the digital meter.
§4.3.2 Wire Feed Roller Selection
The importance of smooth consistent wire feeding during MIG welding cannot be
emphasized enough. Simply put the smoother the wire feed then the better the weld.
Feed rollers or drive rollers are used to feed the wire mechanically through the length of
the welding gun cable. Feed rollers are designed to be used for certain types of welding
wire and they have different types of grooves machined in them to accommodate the
different types of wire. The wire is held in the groove by the top roller of the wire drive unit
and is referred to as the pressure roller, pressure is applied by a tension arm that can be
adjusted to increase or decrease the pressure as required. The type of wire will determine
how much pressure can be applied and what type of drive roller is best suited to obtain
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