Selco WF 110 Instrucciones De Uso página 47

4.5 DGW/DGA series torches
4.5.1 General
The DGW/DGA series torches are digital MIG/MAG torches
allowing the main welding parameters to be controlled:
- welding current (Synergic MIG/MAG process)
- welding voltage (Synergic MIG/MAG process)
- wire speed (Manual MIG/MAG process)
- welding voltage (Manual MIG/MAG process)
- program recall
and the real values to be displayed for:
- welding current
- welding voltage
"Consult the instruction manual".
5 MAINTENANCE
Routine maintenance must be carried out on the
system according to the manufacturer's instruc-
tions.
Any maintenance operation must be performed by qualified
personnel only.
When the equipment is working, all the access and operating
doors and covers must be closed and locked.
Unauthorized changes to the system are strictly forbidden.
Prevent conductive dust from accumulating near the louvers
and over them.
Disconnect the power supply before every opera-
tion!
Carry out the following periodic checks on the
power source:
- Clean the power source inside by means of
low-pressure compressed air and soft bristle
brushes.
- Check the electric connections and all the con-
nection cables.
For the maintenance or replacement of torch components,
electrode holders and/or earth cables:
Check the temperature of the component and
make sure that they are not overheated.
Always use gloves in compliance with the safety
standards.
Use suitable wrenches and tools.
Failure to carry out the above maintenance will invalidate all
warranties and exempt the manufacturer from any liability.
6 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.
No output power (the system does not weld)
Cause Faulty torch trigger button.
Solution Replace the faulty component.
Contact the nearest service centre to have the sys-
tem repaired.
Cause Side cover open or faulty door switch.
Solution In order to ensure safe operation the side cover
must be closed while welding.
Replace the faulty component.
Contact the nearest service centre to have the
torch repaired.
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 System parameters or functions set incorrectly.
Solution Reset the system and the welding parameters.
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.
47