Rinse the pitcher, pitcher lid, tea basket, and tea basket lid with warm water and mild soap after each use. Use a non-abrasive sponge or washrag to avoid scratching the plastic surface.
Fill a bucket with warm white vinegar. Soak the pitcher, pitcher lid, tea basket, and tea basket lid for 20 minutes, then rinse. This will get rid of the hard-water deposits that build up over time.
De-lime the machine when you notice an increase in steam or a prolonged pumping action before all of the water is released into the pitcher. Place 1 quart of undiluted white vinegar in the water reservoir, put the pitcher with a lid under the machine, and turn on the machine. Unplug the machine as soon as 1 cup of vinegar is expelled. Let the machine sit for 30 minutes. Plug it in and turn it on to expel the rest of the liquid. Pour all the vinegar out of the machine and the pitcher. Repeat this process with plain water. This procedure should be done every 40 cycles if you have hard water and every 80 if you have soft water.