Hi Lej, Great question. It is not necessary, but will help fill the cylinder with sanitizer more quickly. It is required when you add product though, before pressing freeze! It should also have been removed prior to adding sanitizer, during the disassembly and clean process. Thanks!
Hi Dilya, Cleaning frequency is determined by what type of product you are using, and local health codes. If you are using a dairy product for milk shakes, then you will clean more often. If you are using a syrup concentrate with alcohol, it may be less frequent..
