what size backflush does a reneka viva espresso machine take

Source: Reneka

Source: Reneka

Source: Reneka

Source: Magrini VIVA User manual | Manualzz

Source: Reneka

Source: Reneka

Source: How to Backflush an Espresso Machine — Guide 2 Coffee

Source: Reneka

Source: Espresso Machines – Reneka

Source: How Often Should You Backflush The Espresso Machine – Earl Of Coffee