To clean a Keurig coffeemaker, one should disassemble the machine and clean the removable parts followed by running a descaling brew. This process should be undertaken every one to three months, according to the official Keurig website.
The first stage of cleaning a Keurig coffeemaker is to disassemble the machine and clean the removable parts, such as the reservoir, lid, drip tray and K Cup holder. These can be cleaned by soaking in a sink of hot water and soap or on the top rack of a dishwasher. Once they are clean, dry the parts with a towel and reassemble the machine.
The second stage of cleaning a Keurig coffeemaker is to run a descaling brew. To do this, pour a combination of descaling liquid and fresh water into the machine's water reservoir. If desired, vinegar can be used in place of descaling liquid. Press the brew button and allow the liquid to pass through the machine and into the K Cup holder. Repeat this process once again with descaling liquid or vinegar and water and an additional three times with just fresh water. If a residual taste remains, repeat the process with fresh water until all traces of the taste are erased.