23
Cause
Incorrect ground connection.
Solution
Ground the system correctly.
Read the paragraph “Installation“.
Cause Faulty
electronics.
Solution
Contact the nearest service centre to have the sys-
tem repaired.
Incorrect output power
Cause
Incorrect selection in the welding process or faulty
selector.
Solution
Select the welding process correctly.
Replace the faulty component.
Contact the nearest service centre to have the system
repaired.
Cause
System parameters or functions set incorrectly.
Solution
Reset the system and the welding parameters.
Cause
Faulty potentiometer for the adjustment of the
welding current.
Solution
Replace the faulty component.
Contact the nearest service centre to have the system
repaired.
Cause Faulty
electronics.
Solution
Contact the nearest service centre to have the system
repaired.
Arc instability
Cause
Incorrect welding parameters.
Solution
Check the welding system carefully.
Contact the nearest service centre to have the system
repaired.
Excessive spatter
Cause
Incorrect arc length.
Solution
Decrease the distance between the electrode and
the piece.
Decrease the welding voltage.
Cause
Incorrect welding parameters.
Solution
Decrease the welding voltage.
Cause
Incorrect welding mode.
Solution
Decrease the torch angle.
Insufficient penetration
Cause
Incorrect welding mode.
Solution
Decrease the welding travel speed.
Cause
Incorrect welding parameters.
Solution
Increase the welding current.
Cause Incorrect
electrode.
Solution
Use a smaller diameter electrode.
Cause
Incorrect preparation of the workpieces.
Solution
Increase the chamfering.
Cause
Incorrect ground connection.
Solution
Ground the system correctly
Read the paragraph “Installation“.
Cause
Pieces to be welded too big.
Solution
Increase the welding current.
Inclusions
Cause Poor
cleanliness.
Solution
Clean the pieces accurately before welding.
Cause
Electrode diameter too big.
Solution
Use a smaller diameter electrode.
Cause
Incorrect preparation of the workpieces.
Solution
Increase the chamfering.
Cause Incorrect
welding
mode.
Solution
Decrease the distance between the electrode and
the piece.
Move regularly during all the welding operations.
Sticking
Cause Incorrect
arc
length.
Solution Increase the distance between the electrode and
the piece.
Increase the welding voltage.
Cause Incorrect
welding
parameters.
Solution
Increase the welding current.
Cause
Pieces to be welded too big.
Solution
Increase the welding current.
Increase the welding voltage.
Undercut
Cause Incorrect
welding
parameters.
Solution
Decrease the welding voltage.
Use a smaller diameter electrode.
Cause Incorrect
arc
length.
Solution Increase the distance between the electrode and
the piece.
Increase the welding voltage.
Cause Incorrect
welding
mode.
Solution
Decrease the side oscillation speed while filling.
Decrease the travel speed while welding.
Porosity
Cause
Grease, varnish, rust or dirt on the workpieces to
be welded.
Solution
Clean the workpieces accurately before welding.
Cause
Grease, varnish, rust or dirt on the filler material.
Solution
Always use quality materials and products.
Keep the filler material always in perfect condi-
tions.
Cause
Humidity in the filler material.
Solution
Always use quality materials and products.
Keep the filler material always in perfect conditions
Cause Incorrect
arc
length.
Solution Increase the distance between the electrode and
the piece.
Increase the welding voltage.
Cause
The weld pool solidifies too quickly.
Solution
Decrease the travel speed while welding.
Pre-heat the workpieces to be welded.
Increase the welding current.
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