ESAB TXH 120, Инструкция по эксплуатации, Страница: 13 / 21

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5.3 Grinding
Grind tungsten electrodes according to the following table:
NOTE that tungsten electrodes must be ground lengthways. If they are ground
incorrectly the arc may be unstable. When the welding current is increased the angle
must also be increased.
When welding with alternating current (AC) the electrode end must be gently
rounded. Grinding the electrode is then unnecessary. Light grading of the edge is
sufficient. The electrode forms itself if it is carefully overloaded. If the tip becomes
ball shaped while welding using alternating current, this is a sign that the current is
too high for the diameter of electrode being used.
Welding current Electrode angle
20 A 30
°
20 --100 A 30
°
--90
°
100 --200 A 90
°
--120
°
over 200 A 120
°
6 MAINTENANCE
Regular maintenance is important for safe, reliable operation.
IMPORTANT! Switch off the ignition of the power source when cleaning the torch.
Note!
All guarantee undertakings from the supplier cease to apply if the customer himself
attempts any work in the product during the guarantee period in order to rectify any
faults.
6.1 Daily
S
Check that all cables and hoses are undamaged and that there are no kinks in
them.
S
Check that the gas nozzle is free from defects and suitable for the work in
question.
S
Check that the shielding gas flows evenly and without restriction.
S
Check that the electrode is undamaged and that the electrode has been ground
to the correct angle.
S
Check the water flow at the unit’s return line.
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