Fronius Robacta PTW 3500 - Loading Limits Dependent on Plasma Gas Flow Rate (PTW 3500)

Troubleshooting
Safety
WARNING!
An electric shock can be fatal.
Before carrying out any work on the welding torch:
▶
Turn the mains switches of the power source and plasma device to the "0"
position
▶
Disconnect the power source and plasma device from the mains
▶
Put up an easy-to-understand warning sign to stop anybody inadvertently
switching them back on again
Troubleshooting
Pilot arc not igniting
Tungsten electrode missing
Insert tungsten electrode
Plasma nozzle and tungsten electrode too far apart
Position tungsten electrode correctly
Plasma nozzle and tungsten electrode touching or too close (short
circuit between plasma nozzle and tungsten electrode)
Position tungsten electrode correctly
Cause:
Remedy:
Cause:
Remedy:
Cause:
Remedy:
Copper droplets on the plasma nozzle after a short welding time
Droplet formation on the plasma nozzle is a sign that the plasma nozzle has been
badly damaged: the plasma nozzle has melted due to high temperatures and is
leaking.
Loading values too high
Check the current and plasma gas flow rate, change the plasma nozz-
le, reduce the load
Cause:
Remedy:
Excessive plasma nozzle wear
Insufficient cooling
Check the current and plasma gas flow rate, check the cooling cir-
cuit, increase the plasma gas flow rate, check for wear on the nozzle
connection
Cause:
Remedy:
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EN