Selco Genesis 284 PSR Instrucciones De Uso página 46

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 parameters.
Solution Check the welding system carefully.
Contact the nearest service centre to have the sys-
tem repaired.
Insufficient penetration
Cause Incorrect welding mode.
Solution Decrease the welding travel speed.
Cause Incorrect welding parameters.
Solution Increase the welding current.
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 too big.
Solution Increase the welding current.
Tungsten inclusions
Cause Incorrect welding parameters.
Solution Decrease the welding voltage.
Use a bigger diameter electrode.
Cause Incorrect electrode.
Solution Always use quality materials and products.
Sharpen the electrode carefully.
Cause Incorrect welding mode.
Solution Avoid contact between the electrode and the weld
pool.
Blowholes
Cause Insufficient shielding gas.
Solution Adjust the gas flow.
Check that the diffuser and the gas nozzle of the
torch are in good condition.
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Sticking
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Solution
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Undercuts
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Oxidations
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Porosity
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Solution
Incorrect arc length.
Increase the distance between the electrode and
the piece.
Incorrect welding parameters.
Increase the welding current.
Incorrect welding mode.
Angle the torch more.
Pieces to be welded too big.
Increase the welding current.
Incorrect welding parameters.
Decrease the welding voltage.
Incorrect arc length.
Increase the distance between the electrode and
the piece.
Incorrect welding mode.
Decrease the side oscillation speed while filling.
Decrease the travel speed while welding.
Insufficient shielding gas.
Use gases suitable for the materials to be welded.
Insufficient gas protection.
Adjust the gas flow.
Check that the diffuser and the gas nozzle of the
torch are in good condition.
Grease, varnish, rust or dirt on the workpieces to be
welded.
Clean the workpieces carefully before welding.
Grease, varnish, rust or dirt on the filler material.
Always use quality materials and products.
Keep the filler metal always in perfect condition.
Humidity in the filler metal.
Always use quality materials and products.
Keep the filler metal always in perfect condition.
Incorrect arc length.
Decrease the distance between the electrode and
the piece.
Humidity in the welding gas.
Always use quality materials and products.
Ensure the gas supply system is always in perfect
condition.
Insufficient shielding gas.
Adjust the gas flow.
Check that the diffuser and the gas nozzle of the
torch are in good condition.
The weld pool solidifies too quickly.
Decrease the travel speed while welding.
Pre-heat the workpieces to be welded.
Increase the welding current.