Rohr MINI-140PI Mode D'emploi page 7

MINI-140PI / MINI-180PI / MINI-220PI / SMINI-120NI / SMINI-140NI
Troubleshooting
Fittings, welding materials and environmental factors may affect the quality of your welding. This guide
will help you to ensure your setup is just right to achieve the perfect weld.
Hard to strike / maintain an arc
• Ensure you are using a high quality tungsten electrode.
• Grind the end of the tungsten electrode to a taper. If the tungsten electrode is not ground, it
will be difficult to strike arc or the arc may be unstable.
When MMA welding, there is too much weld
• Ensure that the current used is not too high for the thickness of the welding rod.
There is no power to the unit / no response from the unit
• Ensure that the electric cable is in good condition and connected correctly. Faulty cables must
not be used, they should be replaced by a qualified professional.
The HF arc-striking sound can be heard but there is no welding output
• Check the torch and ground cables to ensure that they are connected correctly and they are not
damaged. Faulty cables must not be used, they should be replaced by a qualified professional.
• Check that the grounding cable is making good contact with the welding object.
• Check the end of the tungsten electrode to see if it needs to be ground down to a taper.
Electrodes that have become contaminated need to be ground down.
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