Stratasys J850 Manual page 59

8. Clean the orifice plates, with a back-and-forth motion. Use the mirror to
make sure that you have removed all of the residue material.
9. After cleaning the print heads, clean the entire roller surface, by rotating it
as you clean.
10. Clean the glass lens on the UV lamps.
11. Using a generous amount of alcohol on the cleaning cloth, remove any
material remaining on the wiper and the surrounding area.
12. Remove any pieces of waste material collected in the purge unit. If
necessary, remove the waste collector to clean it. Wipe the rubber seal.