Fronius Robacta Drive CMT-PAP G Manual De Instrucciones página 54

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.
Wirefeed buttons do not work
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Weld seam porosity
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54
Welding wire worn due to heavy contact pressure at the feed rollers
Reduce contact pressure at the feed rollers
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 fitted too loosely
Tighten the contact tube
Plug-in connections of „control line/power source" faulty
Check plug connection / Contact After-Sales Service
Control line is faulty
Replace control line / Contact After-Sales Service
Soiled gas nozzle, causing inadequate gas-shielding of the weld seam
Remove welding spatter
Either the shielding gas hose has holes in it, or the hose is not con-
nected properly
Change the shielding gas hose, ensure the hose is connected properly
The O-ring seals on the connection points are faulty
Change the O-ring seals
Moisture/condensation in the shielding gas hose
Dry the shielding gas hose
Shielding gas flow is either too high or too low
Correct the shielding gas flow
Insufficient shielding-gas flow at the beginning or end of welding
Increase gas pre-flow or gas post-flow
Rusty or poor quality welding wire
Use high-quality welding wire with no impurities
Too much parting agent applied
Wipe off excess parting agent / apply less parting agent