Volkswagen VAS 6321 A, Инструкция по использованию

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Wo r k i n g w i t h t h e C B R B i t s
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9.3 Useful and interesting facts about bits
If you adjust the setting of the CBR PowerInverter to the respective conditions when welding on the bits, you should do this
primarily with the power, not with the time – extending the time usually only causes unnecessary heating of the body
panels and the tools.
Adjust the power to the thickness of the metal sheet: Thinner metal sheets = low power, thicker metal sheets = high power.
If the thickness of the metal sheet is not known, start with low power first and check bits for good welding.
Adjust the contact pressure of the bits during welding to the power – high power = high contact pressure, low power = low
contact pressure.
Benefits of high current and short time when welding on the bits
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A short welding time prevents thermal overload and thus melting of the body panels.
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High power allows strong spot welding of the bits to the body panel.
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Because there is only low exposure to heat during welding, the properties of the body panels are not changed.
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There is almost no burning of the corrosion protection on the back of the body panel – the zinc coating on the sheets is
not damaged.
Possible causes if there is any powerful sparking, burn marks and poor adhesion of the bits
The surface of the body panel has not been ground sufficiently bare (paint residues, rust, zinc coating) or the surface of the
body panel is dirty (oil, grease, wax, etc.).
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Insufficient contact pressure during welding.
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Unsafe, hesitant handling.
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Poor ground connection.
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Insufficient power supply (VAS 6321 A/13 is operated with extension cable).
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Power is set too low.
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Shunt (adjacent bit is touched during welding).
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The welding surface of the bits is not clean or the bits have not been recut with the BitCutter.