The present document describes filler apparatus, washing and maintenance support station and methods of using the same. The support station is for supporting a filler container, a volumetric container and/or a sliding plate of the filler apparatus. The washing and maintenance support station comprises a support main frame; a filler container corresponding mating connector on the support main frame for releasably connecting with a filler container mating connector; a volumetric container mount receiving section on the main frame below the filler container corresponding mating connector for releasably mounting a volumetric container mount; and a sliding plate receiving support on the main frame below the volumetric container mount receiving section for releasably supporting a sliding plate substantially flat section. When displaced vertically relative to the support main frame, the filler container, the volumetric container and the sliding plate are capable of engagement with respectively the filler container corresponding mating connector, the volumetric container mount receiving section and the sliding plate receiving support to be disengaged.