Replacing the Roller Scraper

You should replace the roller scraper blade—

•   after 1,000 hours of printing.
•   if it does not effectively keep the roller clean.
You should periodically test the effectiveness of the roller scraper when you clean the roller waste collector. See Cleaning the Roller Waste Collector and Inspecting the Roller Scraper.
To replace the roller scraper:
1.   Prepare—
•   a new roller scraper blade
•   a Phillips 1x75 mm screwdriver
•   a 2.5-mm and a 2-mm hex (Allen) key
2.   Remove the right UV-lamp assembly and the roller waste collector covering (See steps 4 to 10 in Cleaning the Roller Waste Collector and Inspecting the Roller Scraper).
3.   Loosen the two screws securing the roller waste collector and pull it out.

4.   Remove the screws that secure the roller scraper assembly.

5.   Remove the scraper blade and discard it.

6.   Place the new scraper blade onto the pins in the holder, as shown.

7.   Insert and tighten the roller scraper blade screws.
Important:
  • Tighten the screws in the order shown in the figure below.
  • Use the new screws supplied in the replacement kit

8.   After tightening the screws, inspect the blade and make sure that it is straight. If necessary, loosen the screws and tighten them again, evenly.
9.   Return the roller waste collector assembly and attach the right UV-lamp assembly to the print block. (See steps 3 to 5 in To re-assemble the components.)