Fronius PTW 1500 PAP Manual De Instrucciones página 22

Troubleshooting
Safety
An electric shock can be fatal.
Before carrying out any work on the welding torch:
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Troubleshooting
Pilot arc not igniting
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.
Cause:
Remedy:
Excessive plasma nozzle wear
Cause:
Remedy:
HF is conducted to robot
Cause:
Remedy:
22
WARNING!
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
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
Loading values too high
Check the current and plasma gas flow rate, change the plasma nozzle,
reduce the load
Insufficient cooling
Check the current and plasma gas flow rate, check the cooling circuit, incre-
ase the plasma gas flow rate, check for wear on the nozzle connection
Electrically-conductive robot flange fitted
Fit plastic robot flange