Thanks for your comments. All parts are UK sourced and made and all food safe. Cleaning of the non-machined, all-stainless steel (no coating) rollers is initially by a cold water wash as is normal for many pieces of beekeeping harvesting equipment and this can be completed by an easy removal of the rollers complete with drive belt and washed at high temperature in a dish washer. Replacement is a simple reverse procedure. I hope this helps.
I do not have a video (next year honey crop allowing!) but the mechanism of use is similar to other models - push down and lift up. I aimed this at the hobby beekeeper.