Troubleshooting - Scheppach WSE850 Originalbetriebsanleitung

11. Troubleshooting

Fault Possible cause
Welding current too high for the fuse.
Fuse activated
Defect
Poor earthing contact on the cable /tongs
Even welding impos-
sible
Unclean piece
Wrong type of electrode chosen
Fragile or porous weld
Electrodes are damp
Reverse conduct of the welding current do
not provide right contact
Welding current not
Thermal protection light on
available
Defective electronics
Ambient temperature too high
Heat protection on
permanently
For the given welding unit too small
22 І GB
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Remedy
Use a fuse of other switching-on characteristics.
Have it repaired
Clean the piece and provide for good contact
Check and replace the cable if necessary
Remove rust, grease and other dirt before weld-
ing
Select the electrodes according to the material to
be welded.
Dry the electrodes or dispose of them
Check the reverse line of welding current for
good contact
Let the unit cool down. The work may be contin-
ued when the light indicator goes off.
Inform servicing department