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5. RATINGS PLATE GUIDE
FOR FURTHER CLARIFICATION OF SYMBOLS REFER TO BRITISH STANDARD EN 60974-6
Fig.2
6. OPERATING INSTRUCTIONS
WARNING! If you have no welding experience, we recommend
you seek supervised training from an expert source.
6.1.
Introduction. Your welder features a single phase transformer with a
drooping characteristic suitable for welding with an alternating current
using stick electrodes with diameters from 1.5mm to the highest
electrode diameter as shown on the chart in Fig.6.
6.2.
Current regulation. The intensity of the welding current can be
adjusted by means of a manually operated magnetic shunt. See Fig.1-3.
To increase the current turn the knob clockwise whilst making reference to the graduated scale on the top of the machine (See Fig.3).
To decrease the current turn the knob anti clockwise. Note: Set the current to the desired level before commencing welding.
dO NOT operate the current regulation mechanism whilst welding is in progress.
6.3.
Thermostatic Protection. When the machine becomes overheated the built in automatic protection cuts off the supply and a yellow
lamp illuminates on the front panel. See Fig.1-5. When the machine has cooled the light goes out and the supply is automatically
restored. As you use larger welding rods you may experience a temporary current shut off. The larger the welding rod, the greater the
current required, consequently, the hotter the machine will become and the quicker it will cut out.
6.4.
Setting up the welder.
6.4.1. ensure the machine is turned off from the mains power supply. (See fig.1-2).
6.4.2. Attach the earth clamp to a point on the workpiece that has been cleanly ground to provide good contact. Attach it as close as
possible to the area you will be welding.
6.4.3. Select the diameter of electrode to be used in relation to the type of weld to be made. Consideration should be given to
the fact that higher current values should be used for flat welding, whereas for vertical or over head welding lower current values are
required. Insert the electrode into the electrode holder. ensure there is a good connection. ensure welding surfaces are kept clean and
free from grease, or oil.
6.4.4. establish the welding current required in relation to the diameter of electrode you are using by making reference to the table in Fig.6.
6.4.5. Set the current required in amps using the control knob on the front panel. See Fig.1-3. The current set can be read from the
graduated scale on the top of the machine. See Fig.3.
6.5.
Commencing welding. It is advisable to practice on scrap metal first especially where potentially difficult
welds are to be undertaken.
WARNING! Remember to wear a full face welding mask, gauntlets and protective clothing, and
ensure you have read, understood and apply safety instructions. Wear goggles whilst chipping slag.
6.5.1. DO NOT switch on the power supply until you are fully ready to start welding.
6.5.2. Place the face mask in front of your face.
6.5.3. To strike the arc tap the electrode lightly on the workpiece as if striking a match. dO NOT hit the electrode on
workpiece as this may damage the stick.
6.5.4. As soon as the arc is struck maintain a steady gap between the end of the electrode and the workpiece equal
to the diameter of the electrode in use (See Fig.4). Try to maintain this gap continuously through out the
duration of the weld. The electrode should also be held at an angle of 20° to 30° from the vertical. (See Fig.5).
6.5.5. At the end of the weld bead, move the tip of the electrode backwards in order to fill the weld crater.
Quickly lift the electrode from the weld pool to extinguish the arc. Refer to Fig.7 for a welding fault
analysis.
6.5.6. If the electrode sticks, you may be holding it too close to the workpiece. Pull sharply to the left, and then
to the right to free the electrode.
6.5.7. After welding, chip off the slag with a chipping hammer. Wear goggles.
6.5.8. Switch off the welder and disconnect it from the mains power supply. Remember that the workpiece and
the electrode will still be very hot.
WARNING! Use pliers to remove the hot consumed electrodes or to move the hot welded pieces.
6.5.9. When welding has finished remove the electrode from the electrode holder as a safety precaution.
(For actual ratings of your model refer to the top cover).
Original Language Version
Fig.3
Fig.4
Fig.5
140XT, 160XT
Issue: 2 - 10/02/10
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