Cleaning your Bunn coffee maker with a reservoir involves several steps. Follow the detailed instructions below for optimal results. Step 1: Pre-Cleaning Preparation. Before you begin the cleaning process, ensure that your coffee maker is unplugged and cooled down. Remove any leftover coffee grounds from the brew basket, and empty the water.. Cleaning a Bunn Coffee Maker. Keeping your coffee maker clean and working is the best way to avoid dirty components and carafes. When you stay on top of required maintenance, you ensure that you aren't contributing to your coffee maker's decline and allowing it to fill with hard water deposits and other gunk.
Then follow these steps on how to clean a Bunn coffee maker sprayhead: Switch the tank to OFF. Unplug the unit from the wall. If it was recently used, let it cool for two hours. Remove the funnel. Use your fingers to unscrew the sprayhead. Insert the deliming tool into the sprayhead tube. Leave about 2 inches of the tool out of the tube.. Coffee makers can harbor mold and germs, and mineral deposits over time can slow heating and brewing, which is why it's recommended to descale and deep-clean your coffee maker once a month. X Research source If you're wondering if you should descale and deep-clean your BUNN machine, here are some signs that can let you know when it's time.