It’s important to switch your machine to overnight/chill mode every night.
When using overnight/chill mode, the frozen slush in the machine turns to liquid and is kept refrigerated and stirred.
If the machine is switched off manually at night with slush in the tanks, the syrup will drain from the slush and sink to the bottom of the tank, this causes the ice floating on the surface of the product to become hard and if the slush has not fully melted overnight before switching the machine on, the now hard ice will break up. This can cause damage or break the spiral blades when turning.
If you have chunks of ice in your tanks you can download this guide here.