How do I know when the machine has finished blending? February 28, 2019 15:20 Updated Follow The light on the power button will turn green. Related articles Can I put the cups in the dishwasher? Why is the button on my Xi machine blinking? Can I add more ingredients to each cup? How do I open the cup lid? My machine is not working, what should I do? Comments 0 comments Please sign in to leave a comment.