Keurig introduced its innovative single-cup coffee brewers and K-Cups to the world in 1998, and their adoption has spread rapidly in homes, offices and cafeterias across the country. One of the key selling points of the Keurig coffee makers is their ease of use -- put the K-Cup in the holder, select which size cup you want, and go. However, a basic priming task must be performed when first using a new system to flush the insides and fill the internal water tank with hot water.
Remove any protective tape or packaging from the unit. Plug the cord into a grounded electrical outlet.
Remove the lid over the water reservoir, found on the left side of most models. Lift the water reservoir tank straight up to remove it from the coffee maker.
Rinse the inside of the reservoir thoroughly with clean water. Fill the tank with cold water afterward. Keurig recommends bottled or filtered water, but cold tap water works as well.
Place the reservoir back on the coffee maker, lowering the tank straight down until it locks into place. Replace the lid over the reservoir.
Put a coffee mug on the drip tray. Press the power button to turn on the coffee maker.
Press a button if it flashes, or do nothing if the LCD display indicates that the water is heating. Wait approximately four minutes for the unit to prime itself. After four minutes, press the same button as before when it flashes again, or open and close the pod holder using the front handle when prompted by the LCD display. Press the flashing button after opening and closing the pod holder.
Wait for the mug to finish filling with hot water. Pour the water out, then use the Keurig coffee maker normally.