Bohler URANOS 1500 RC Instruction Manual page 23

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.
Hot cracks
Cause Incorrect welding parameters.
Solution Decrease the welding voltage.
Use a smaller diameter electrode.
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