16 Description of operation of the power sources and technical dates
8.3 Possible electrical failures
If you have any doubts or problems, do not hesitate to con-
sult your nearest technical service centre.
9.0 NECESSARY ORDINARY MAINTENANCE
Avoid accumulation of metal dust near and on the ventilation fins.
Disconnect the system before all operations!
Periodical checks on the power source and
WU21:
* Clean the inside using compressed air at low
pressure and soft bristle brushes.
* Check the electrical connections and all connec-
tion cables.
For maintenance and use of the pressure redu-
cers, consult the specific manuals.
For maintenance and replacement of the compo-
nents of the TIG torches, electrode gun and/or
ground cables:
* Disconnect the system before all operations.
* Check the temperature of the components and ensure
that they are not overheated.
* Always use gloves in compliance with regulations.
* Use suitable spanners and tools.
Note: Failure to perform said maintenance will invalidate all
warranties and exempt the manufacturer from all liability.
Fault
Machine does not come on
(Green led off)
Power delivery not correct
(Green LED on)
No current at output
(Green LED on)
Cause
1) No voltage at power supply
socket.
2) Faulty power supply plug or
cable.
3) Internal fuse blown.
1) Incorrect setting of welding
parameters.
2) Mains voltage low.
3) Faulty current regulation
potentiometer.
1) Yellow led on and ERROR
code blinking on display.
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