18
®
ARC160 - NLFREN - v1.0 - 03032014
EN
4�2 Overload light
If welding with large current for a long time and you exceed the duty cycle, the overload lamp will light yellow and the
machine will stop working until it once again reaches a safe temperature. When the overload lamp lights you must turn
the switch to
OFF
position and wait about 15 minutes, then you can continue.
4�3 Using the welder
1� Fitting the welding rod
Select the appropriate welding rod, and insert it into the welding rod holder. It should be approximately the same
thickness as the workpieces being welded.
2� 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.
3� Thermal cutout
If the machine stops at any time and the amber light on the front panel illuminates, the thermal cutout has activated.
Wait until the transformer has cooled sufficiently(the amber light goes out) before restarting work.
4� Attaching the earth clamp
Attach the earth clamp firmly to the workpiece as close as possible to the point of weld.
IMPORTANT
: Ensure that the earth clamp is attached to clean, solid metal. If necessary, thoroughly clean with a
wire brush or similar to guarantee a good connection.
5� Switching ON
Select the welding current step by turning switch LOW/HIGH on the front panel. Switch ON the machine
6� Striking an arc
IMPORTANT
: BEFORE you strike an arc, always bring the face shield up to protect your eyes.
a�
Line up the electrode exactly over the spot where you want to strike.
b�
Position your shield in front of your face and tap the electrode down firmly. Once you tap down and contact is
made, you must instantly raise the electrode to the required arc gap.
•The arc gap should be roughly the same as the diameter of the electrode.
•If you withdraw the electrode too far once the arc is struck, you will lose the arc and have to try again.
NOTE
: One thing that usually happens when you are striking an arc is that the electrode sticks to the work. It should
come unstuck with a sharp tug. If it will not free easily, turn off the welder immediately as it will quickly overheat, then
give the join a tap from the chipping hammer. As you get more experienced, this will happen less.
c�
Once the arc is struck, move the electrode along its intended path, keeping the tip in the molten pool at all times.
• You must also get used to feeding down the electrode steadily as it burns away.
• An even crackling noise should be heard, which is an indication of a good weld.
d�
Inspect the job carefully, the area of weld should be complete fusion of the electrode and parent metal(s).
• Any slag which forms on the surface should be chipped away with the hammer/brush supplied.
•If the resultant weld looks messy and irregular, this is an indication of porosity or slag contamination, and you have
almost certainly failed to achieve the correct combination of speed and current. This is a common problem, so do not
worry as practice will quickly cure this.
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