Cause
Damaged torch liner.
Solution
Replace the faulty component.
Contact the nearest service centre to have the sys-
tem repaired.
Cause
No power supply to the wire feeder.
Solution
Check the connection to the power source.
Read the paragraph "Connections ".
Contact the nearest service centre to have the sys-
tem repaired.
Cause
Tangled wire on the spool.
Solution
Untangle the wire or replace the wire spool.
Cause
Melted torch nozzle (wire stuck)
Solution
Replace the faulty component.
Irregular wire feeding
Cause
Faulty torch trigger button.
Solution
Replace the faulty component.
Contact the nearest service centre to have the sys-
tem repaired.
Cause
Incorrect or worn rolls.
Solution
Replace the rolls.
Cause
Faulty wire feeder.
Solution
Replace the faulty component.
Contact the nearest service centre to have the sys-
tem repaired.
Cause
Damaged torch liner.
Solution
Replace the faulty component.
Contact the nearest service centre to have the sys-
tem repaired.
Cause
Incorrect spindle clutch or misadjusted rolls locking
devices.
Solution
Release the clutch.
Increase the rolls locking pressure.
Arc instability
Cause
Insufficient shielding gas.
Solution
Adjust the gas flow.
Check that the diffuser and the gas nozzle of the
torch are in good condition.
Cause
Humidity in the welding gas.
Solution
Always use quality materials and products.
Ensure the gas supply system is always in perfect
condition.
Cause
Incorrect welding/cutting parameters.
Solution
Check the welding/cutting system carefully.
Contact the nearest service centre to have the sys-
tem repaired.
Excessive spatter
Cause
Incorrect arc length.
Solution
Decrease the distance between the electrode and
the piece.
Decrease the welding voltage.
Cause
Incorrect welding/cutting parameters.
Solution
Decrease the welding/cutting voltage.
56
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Cause
Solution
Cause
Solution
Cause
Solution
Insufficient penetration
Cause
Solution
Cause
Solution
Cause
Solution
Cause
Solution
Cause
Solution
Cause
Solution
Cause
Solution
Slag inclusions
Cause
Solution
Cause
Solution
Cause
Solution
Cause
Solution
Tungsten inclusions
Cause
Solution
Cause
Solution
Cause
Solution
Incorrect arc regulation
Increase the equivalent circuit inductive value setting.
Insufficient shielding gas.
Adjust the gas flow.
Check that the diffuser and the gas nozzle of the
torch are in good conditions.
Incorrect welding/cutting mode.
Decrease the torch angle.
Incorrect welding/cutting mode.
Decrease the welding/cutting travel speed.
Incorrect welding/cutting parameters.
Increase the welding/cutting current.
Incorrect electrode.
Use a smaller diameter electrode.
Incorrect edge preparation.
Increase the chamfering.
Incorrect earth connection.
Earth the system correctly
Read the paragraph "Installation ".
Pieces to be welded/cut too big.
Increase the welding/cutting current.
Insufficient air pressure.
Adjust the gas flow.
Read the paragraph "Installation".
Poor cleanliness.
Clean the pieces accurately before welding/cutting.
Electrode diameter too big.
Use a smaller diameter electrode.
Incorrect edge preparation.
Increase the chamfering.
Incorrect welding/cutting mode.
Decrease the distance between the electrode and
the piece.
Move regularly during all the welding/cutting
operations.
Incorrect welding parameters.
Decrease the welding voltage.
Use a bigger diameter electrode.
Incorrect electrode.
Always use quality materials and products.
Sharpen the electrode carefully.
Incorrect welding mode.
Avoid contact between the electrode and the weld
pool.