OPERATING THE WELDER
PREPARING THE WORKPIECE
The area being welded should be perfectly clean. Any coating, plating or corrosion must
be removed, otherwise a good weld will be impossible to achieve.
Attach the earth clamp to the workpiece as close to the point of weld as possible,
without it being intrusive.
OPERATION
1. Select appropriate welding voltage for material to be welded, settings adjustable from
1 to 6 positions. Never move voltage selection switch whilst welding as this will damage
the switch. Adjust wire speed setting to match selected voltage.
2. Plug the 15 Amp primary input lead into the mains supply (240V Single Phase) and
switch ON the machine.
3. Cover your face with an Australian Standards approved welding mask or welding
helmet.
This is essential.
Arc rays are harmful to people’s eyes and skin. Always wear a welding helmet and
suitable protective clothing including welding gloves whilst the welding operation is
performed.
4. Lower the torch to the workpiece with one hand and approach the work with the torch
tip at an angle of about 35 Degrees and pull the torch trigger fully.
· As the wire touches the workpiece, an arc will be struck.
5. In order to produce a satisfactory weld, the controls may be fine tuned as required.
NOTE: MIG welding is an acquired skill, it is strongly advised that, if you are not
fully familiar with this type of welding, you practice on a piece of material with the
same characteristics as your workpiece, until you are satisfied with the result,
and you have fine tuned your welder to produce a satisfactory weld.
NOTE: One of the problems experienced with novice welders, is the welding wire
sticking to the contact tip. This is as a result of the wire feed speed being too
slow. It is always better therefore to start with too high a speed, and back off
slightly, to avoid the possibility of the wire welding itself to the tip. This is the
reason position 6 is recommended for start up.
NOTE: Listen to the sound made. An irregular crackling sound denotes too
high a wire speed. Decrease the speed until a regular, strong buzzing
sound is heard.
UNI-PLAS
UNI-PLAS
