Next time you tape over it, try this. Cut an old credit card, hotel key card, or something similar to just larger than the switch's recess. Tape only the top edge to the machine so that the stiff plastic or cardboard covers the switch, but can be lifted up and out of the way when you need to access it. I've used a similar trick to protect light switches I wanted to occasionally use, but not accidentally flip along with the other switches in the next gang over.