The Keurig coffee system is a personal single-cup brewing machine. The Keurig keeps at least a cup of water inside the brewer at all times to provide instant hot water which enables the brewer to make gourmet coffee by the cup in less than a minute. To keep your brewer running efficiently, or when storing the brewer for a period of time, it is necessary to drain the water not just out of the reservoir, but from the interior of the machine as well.
Turn off the power to the brewer and unplug the power cord from the outlet. Allow the brewer to cool for at least 30 minutes.
Lift the water reservoir off of the brewer and set it aside. The reservoir is the plastic container you add water to when brewing coffee.
Turn the brewer around so that the back is facing you. Turn the small screw knob on the top center of the back panel counterclockwise with a flat-head screwdriver. Pull the back panel off the brewer and set it aside.
Position the brewer so that the rear of the brewer is near the edge of the counter. Pull the plastic tube on the right side of the rear panel out of the retaining clip. Pull the plug out of the top of the tube and position the end of the tube over a pitcher at the edge of the counter. Allow the water to drain completely into the pitcher.
Place the plug back into the end of the tube and push the tube back into the retaining clip. Place the back panel back over the rear of the brewer and secure with the retaining screw knob.
Check the water-fill lid on top of the brewer to ensure that is completely shut.
Place a coffee cup on the drip plate where you normally set the cup for brewing coffee.
Hold the "Brew" button continuously with your finger until all of the water is out of the tank.