Possible causes:
This is the result of a wrong flexer setting!
Open the rollformer and you undo the screw on the right handside of the “Flexer”. 
Measure with a ruler the actual position of the flexing wedge.
On the other side of the flexer, you can alter the position of flexer with the M8 screw. Choose a lower position for less flexing.
NOTE:
With more flexing the sheet comes out of the flexer station with less prebending.
If you do less flexing, means that the sheet comes out of the flexer station with more prebending.
NOTE:
After adjusting the flexer, you might have to adjust the rounding slighty!
For more information regarding the flexer and rollformer setting check our manual book 2 chapter 5.4.
Possible Cause (CM16 / S, X8):
Adjustment of the light barrier distance to eject cylinder might be wrong.
Wrong adjustment of the transport belt speed.
NOTE:
The ejected can should whether touch the can before nor the following.
Eject pulse cylinder has to fit to production speed:
Recommendation: 150-200msfor<100cpm 100-150msfor100-200cpm
80-100msfor200-400cpm
Place a canbody between the second light barrier and check the LED „LD3“ on the eject print (inside the Pacemaker).
Must be „ON“.
The autoreset needs to be “OFF”. Therefore the can memory will not be reset automatically.
Check, if your hardware parameters are set correctly, according to one of the three layouts.
=> See layouts below!
Possible Cause (Pacemaker):
Possible Cause:
The position of the infeed arm might have shifted, due to a crash or loose screws!
double check the correct position.
Therefore insert „0“ to the can height setting and press „GO“.
NOTE:
If you ever changed the overtravel setting in the tuning level, set this value to „1“.
Now measure the distance from the infeed arm to center of the welding roll.
The correct reading should be: 216 mm!
NOTE:
With this reading the canbody will have 1 mm overtravel.
Find the correct position by undoing the four fixing screws of the infeed arm!
NOTE:
This adjustment described above, is only applicable for the old type of CMX8, since the new version has a slot to prevent this issue.
Possible cause:
This can only happen on higher can heights. The canbody to be welded, is extending with its back into the rollforming area, while the next tin plate is coming out of rollformer and touches the backside of the tin plate. The sharp edge of the rollforming plate scratches paint away. This paint is being welded thereafter in the seam.
Correction:
