Selco Quasar 180 Instrucciones De Uso página 23

5 TROUBLESHOOTING
The repair or replacement of any parts in the
system must be carried out only by qualified
personnel.
The repair or replacement of any parts in the system by unau-
thorised personnel will invalidate the product warranty.
The system must not be modified in any way.
The manufacturer disclaims any responsibility if the user
fails to follow these instructions.
The system fails to come on (green LED off)
Cause No mains voltage at the socket.
Solution Check and repair the electrical system as needed.
Use qualified personnel only.
Cause Faulty plug or cable.
Solution Replace the faulty component.
Contact the nearest service centre to have the sys-
tem repaired.
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 -
yellow 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.
23