Clean the Automatic Maintenance System station daily.
Gloves (for example: Ansell Microflex 93-260)
Cloth-Poly Wipe 10cm x 10cm (lint-free)
Isopropyl alcohol - IPA (>= 98%)
Do NOT use flush liquid for daily printhead maintenance. It may contribute to increased ink/flush pollution levels on the printheads and the underside of the carriage.
It is extremely important that you NOT apply too much downward pressure on the suction head. If you press down more than 2mm (0.078in) then it will no longer perform printhead maintenance properly. Also, if a suction head is pressed down too far you will need to place a service call to fix it.