Before storing it away, make sure that you clean out the narrow oval-ended tray that sits down below the lower oval vacuum-chamber opening. We are mainly vacuum sealing "dry" ingredients, so most of the "stuff" you'll find in that tray are tiny pieces of dehydrated items that you can just toss out, and give the tray a wipe over with a clean damp dish cloth. Obviously if it's really dirty, wash it in warm soapy water, let air dry, and replace back in the machine.
I DO NOT clamp my handle down when it's in storage - there's absolutely no need to do that. It's very easy to use and you can vacuum either 'wet' or 'dry' foods.
The machine automatically defaults to the 'dry' setting which is handy
for us because that's all we're vacuuming!