voestalpine bohler welding URANOS 1800 RC Bedienungsanleitung Seite 27

Cause Line fuse blown.
Solution Replace the faulty component.
Cause Faulty on/off switch.
Solution Replace the faulty component.
Contact the nearest service centre to have the sys-
tem repaired.
Cause Faulty electronics.
Solution Contact the nearest service centre to have the sys-
tem repaired.
No output power (the system does not weld)
Cause The system has overheated (temperature alarm - yel-
low LED on).
Solution Wait for the system to cool down without switching
it off.
Cause Incorrect earth connection.
Solution Earth 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 switch.
Solution Select the welding process correctly.
Replace the faulty component.
Contact the nearest service centre to have the sys-
tem repaired.
Cause Faulty potentiometer/encoder for the adjustment of
the welding current.
Solution Replace the faulty component.
Contact the nearest service centre to have the sys-
tem repaired.
Cause Faulty electronics.
Solution 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.
Cause Incorrect welding parameters.
Solution Decrease the welding voltage.
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 edge preparation.
Solution Increase the chamfering.
Cause Incorrect earth connection.
Solution Earth the system correctly
Read the paragraph "Installation ".
Cause Pieces to be welded oo big.
Solution Increase the welding current.
Slag inclusions
Cause Poor cleanliness.
Solution Clean the pieces accurately before welding.
Cause Electrode diameter too big.
Solution Use a smaller diameter electrode.
Cause Incorrect edge preparation.
Solution Increase the chamfering.
Cause Incorrect welding mode.
Solution Decrease the distance between the electrode and
the piece.
Sticking
Cause Incorrect arc length.
Solution Increase the distance between the electrode and the
piece.
Cause Incorrect welding parameters.
Solution Increase the welding current.
Cause Pieces to be welded too big.
Solution Increase the welding current.
Undercuts
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.
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 carefully before welding.
Cause Incorrect arc length.
Solution Decrease the distance between the electrode and
the piece.
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.
Hot cracks
Cause Incorrect welding parameters.
Solution Decrease the welding voltage.
Use a smaller diameter electrode.
Cause Grease, varnish, rust or dirt on the workpieces to be
welded.
Solution Clean the workpieces carefully before welding.
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