Fronius Robacta Bedienungsanleitung Seite 68

The welding torch becomes very hot
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Contact tube only has a short service life
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NOTE!
When using CrNi, the contact tube may be subject to a higher degree of wear
due to the nature of the surface of CrNi welding wire.
Feeder inching button malfunction
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68
Loose union nut on central connector
Tighten the union nut
The welding torch has been operated beyond its maximum number of
amps.
Reduce welding power or use a higher capacity torch
The design dimensions of the torch are not sufficient for this task
Observe the duty cycle and loading limits
Only on water-cooled machines: Water flow rate is insufficient
Check water level, water flow rate and cleanliness, and arrangement
of hose pack, etc.
Wrong feed rollers
Use correct feed rollers
Welding wire worn due to overly heavy contact pressure at the feed
rollers
Reduce contact pressure at the feed rollers
Filler wire contains impurities / corroded
Use high-quality filler wire with no impurities
Uncoated filler wire
Use filler wire with suitable coating
Wrong dimension of contact tube
Use a contact tube of the correct dimension
Duty cycle of welding torch has been exceeded
Shorten the ON times or use a higher capacity torch
Contact tube has overheated. No thermal dissipation, as the contact
tube is loose
Tighten the contact tube
Plug-in connections of „feeder inching button/control line/power
source" faulty
Check plug-in connection / have power source or welding torch ser-
viced
Control line is faulty
Replace control line / have welding torch repaired