Some seams look towards the end like the welding spots got longer
- Welding pressure:
Is the welding pressure mechanically always guaranteed?
- Upper roller:
Is the upper roller touching the Z-bar?
- Lower welding roller:
Is the lower welding roller too low?
Welding center must be in the center of Z-bar!
- WEC-O3 circuit board:
Change the existing with a new one.
Attention: Make sure all jumpers and all little blue pontentiometers are in the same position!