PREPARATION FOR USE
A.
PREPARE THE WORK
MOST IMPORTANT!
It is VITAL that the workpiece is perfectly clean at the point of weld. Any coating,
plating or corrosion MUST be removed, otherwise a good weld will be impossible
to achieve.
B. SET THE CONTROLS
Three sets of controls are provided....
In order to produce a satisfactory weld, the controls must be fine tuned whenever
there is a material change in weld characteristics.
(i) ON/OFF,
The ON/OFF switch is self explanatory, but serves a secondary function. You will note
that it is coloured amber. The switch doubles as a lamp, which will illuminate if the
Thermal Overload intervenes.
(ii) WIRE FEED SPEED CONTROL.
The WIRE FEED Rotary Control Knob, with graduations from 0 to 10, is used to
control the wire speed feed to the nozzle.
The knob should be set to position 6 to begin with for welding steel, and 8 for welding
aluminium, then adjusted as required.
Note: This control is for fine tuning the wire speed. The speed of wire delivery will
increase automatically as the current is increased and vice versa. Therefore, once
the ideal speed is achieved by fine tuning, it should not be necessary to adjust
this control when the welding current is changed.
It is always better to start with too high a speed, and back off slightly, to avoid the
possibility of the wire welding itself to the tip.
(iii) WELDING CURRENT CONTROLS
Controls differ from model to model and are described as follows:
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