Epson SUBLIJET IQ R1800 - Manual (Page 14)

10. Attach the custom cover to the cartridge bay. Be careful
not to pinch the tubes when closing the cover.
11. Obtain the long tube holder and remove the tabs from the
back exposing the adhesive. Place the tube holder in the
middle of the gray bar and attach it to the printer.
12. Slide tubing into the holder for placement. Leave enough
slack so that the cartridge bay can easily slide from one side
of the printer to the other without creating tension on the
tubes.
13. Obtain the short tube holder and remove the tabs from the
back exposing the adhesive. Attach it to the right hand side of
the printer where the tubes hang down to meet the Quick
Connect II™ ink box. Slide tubes into the holder for placement.