Another danger to taking tops off appliances, (as well as moisture/water ingress), is the obvious danger that someone will stick their fingers through, (think kiddies with very small hands), or slide something like an instruction book under the worktop for safe keeping. It will drop inside and may cause damage or, again, someone may feel under to try and retrieve it and get hurt/electrocuted etc.
Taking appliance tops off is a strict NO, unless it is to carry out maintenance!
Taking appliance tops off is a strict NO, unless it is to carry out maintenance!