Clean the screw rail

A dirty rail groove may interfere with the screw transport speed.

Clean the rail with a soft, clean cloth dipped in aloohol.

If cleaning is difficult, proceed as follows:

Tum off the power supply.
Remove all screws from the chamber.
Remove the rail from the machine and clean the rail groove with a soft, clean cloth dipped in aloohol.

If the rail is damaged or can naot be cleaned, replace it.