Before using one of our Rotass cream canisters for the first time or for routine maintenance, refer to our instruction manual.   You should be familiar with each component of your whipped cream dispenser before you can clean it effectively: 1)Tip for decorating 2) Metal frame (one-piece tip models do not have this) 3) Sticking pressure valve No. 4 Flat gasket 5) Cap for protection 6)...