The S30 contains a Safety Interlock System that won’t allow the machine to run if it senses that the container is not properly attached to the motor base. See instructions for how to properly align the container with the motor base.
FAQ - S30
Why did the S30 stop in the middle of my recipe?
Either 1) the container was lifted or rocked from the motor base during blending and can quickly be reset or 2) the motor has overheated. Turn the dial to the Stop [○] position and allow the motor to cool for about an hour. Follow these S30 blending tips to avoid overheating the motor in the future.
I’m having trouble removing the S30 blade base from my container. How can I get it off?
Place a plastic or wooden spatula handle in the notches of the blade base and turn the spatula counterclockwise to loosen the blade base from the container. Watch this technique