Clarke Arc/Tig135, Инструкция по эксплуатации и обслуживанию

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Note: If the machine stops at any time and the amber light comes ON the thermal
overload has intervened.
5. The most difficult aspect of the arc welding process, particularly for beginners, is that of
striking an arc. We strongly recommend that you practice on some pieces of scrap metal to
get the feel of the operation, before you start on an actual welding job.
6. Hold the electrode about 10mm from the work and at an angle of about 70
°
to 80
°
to the work
surface. Take care not to accidentally touch the workpiece until you are ready to start.
7. Holding the welding mask close-up to the face, give a short stroke with the electrode on the
workpiece. As soon as the arc is primed, withdraw the electrode from the workpiece to
leave a tiny gap of around 1.5mm (1/16"). The current will flow across the gap with a
crackling noise and brilliant arc. Continue to weld in one direction, maintaining the small gap
as you go. At the end of the run just withdraw the electrode fully from the workpiece.
Note: When you prime the arc be sure to withdraw the electrode fairly swiftly
to leave the 1.5mm. gap, otherwise the electrode will weld itself to the workpiece.
Should this occur, give the electrode a short sharp jerk to free it and, if
necessary prime the arc again. If you cannot free the electrode, switch the
machine off immediately, and free it.
8. Inspect the job carefully. With a correct combination of rod size and current setting, the area
of the weld should be a complete fusion of the electrode metal with the metals being joined.
Slag forming on the surface should be chipped away with a chipping hammer or pick.
ALWAYS wear your safety goggles when chipping away slag.
NOTE: If the resultant weld looks irregular or messy, or shows signs of porosity
or slag contamination, you have almost certainly failed to achieve the correct
combination, (orelse dirt /oil is present on workpiece). Do not worry as practice
will soon cure this.
HEALTH WARNING:
When welding, always ensure there is adequate ventilation in the work area as the
welding process gives off toxic fumes.