Suddenly no welding, but you can still hear the current
Summary
The welding pressure system pushes the upper welding roll down and does not loosen when the welding rolls are closed. This results in excessive pressure between the welding rolls. The Pacemaker does not indicate an error. The modulation is ok.
Cause
- Loose setting screw
- Adjustment misaligned
Remedy
- Check the cylinder settings for the lift-up and the drop-down position of the welding roll.
- Adjust the setting.