The underside of the carriage must be cleaned daily. It may be necessary to clean it more frequently if any of the following conditions exist:
media has a high level of static charge
full bleed printing
media thickness value is incorrect (carriage is too high)
Safety glasses with side shields
Gloves (for example: Ansell Microflex 93-260)
Cloth-Poly Wipe 10cm x 10cm (lint-free)
Surface Cleaner
Isopropyl alcohol - IPA (>= 98%)
Do not use a LED or Halogen (flashlight, smart phone etc). LED and Halogen light sources will cure the UV-based ink in the printhead nozzles rendering it useless. When you need an extra light source, make sure it does not contain UV-components. An example is the Mag-Lite Mini AAA Krypton (EAN 38739167398).
Avoid touching the printheads.
Check for ink accumulation on the underside at the end of each day. If ink is left to long it will dry and be very difficult to remove.