Using this timer knob is very easy. Just turn it to set the desired time for your dishwasher cycle. When you're installing it, make sure it's properly aligned to ensure smooth operation. As for maintenance, keep it clean by wiping it with a soft, damp cloth regularly. Avoid using harsh chemicals as they might damage the knob's surface. If you encounter any problems, don't worry as it's fully guaranteed, and you can contact us for support.