voestalpine bohler welding WF NX 330 SteelDrive Bedienungsanleitung Seite 83

9. TROUBLESHOOTING
Wire feeder fails
Cause
»
» Incorrect or worn rollers.
» Faulty wire feeder.
» Damaged torch liner.
» No power supply to the wire feeder.
» Tangled wire on the spool.
» Melted torch nozzle (wire stuck)
Irregular wire feeding
Cause
»
» Incorrect or worn rollers.
» Faulty wire feeder.
» Damaged torch liner.
» Incorrect spindle clutch or misadjusted rolls
locking devices.
Slag inclusions
Cause
» Poor cleanliness.
» Electrode diameter too big.
» Incorrect edge preparation.
» Incorrect welding mode.
Tungsten inclusions
Cause
» Incorrect welding parameters.
» Incorrect electrode.
» Incorrect welding mode.
Blowholes
Cause
» Insufficient shielding gas.
Solution
» Replace the faulty component.
» Contact the nearest service centre to have the system repaired.
» Replace the rollers.
» Replace the faulty component.
» Contact the nearest service centre to have the system repaired.
» Replace the faulty component.
» Contact the nearest service centre to have the system repaired.
» Check the connection to the power source.
» Read the paragraph "Connections ".
» Contact the nearest service centre to have the system repaired.
» Untangle the wire or replace the wire spool.
» Replace the faulty component.
Solution
» Replace the faulty component.
» Contact the nearest service centre to have the system repaired.
» Replace the rollers.
» Replace the faulty component.
» Contact the nearest service centre to have the system repaired.
» Replace the faulty component.
» Contact the nearest service centre to have the system repaired.
» Release the clutch.
» Increase the rolls locking pressure.
Solution
» Clean the pieces accurately before welding.
» Use a smaller diameter electrode.
» Increase the chamfering.
» Decrease the distance between the electrode and the piece.
» Move regularly during all the welding operations.
Solution
» Decrease the welding current.
» Use a bigger diameter electrode.
» Always use quality materials and products.
» Sharpen the electrode carefully.
» Avoid contact between the electrode and the weld pool.
Solution
» Adjust the air flow.
» Check that the diffuser and the gas nozzle of the torch are in good
condition.
79
TROUBLESHOOTING
EN