now checked on the machine, here is the right direction:
Function => maintenance => Sleep Setup => Refresh / Pump Tube Wash / Cleaning.
Sorry for bad directions just wasnt next to the machine that time...
Also to know how to use all properties and the button flow is, check jv33 manual last pages, there you can find the "Function Flowchart" i have it printed on my wall.. looks great and helps a lot.
Good luck.