The hot water and acids in the vinegar will sure break down or remove stains and mineral buildups in the pot that may cause clogging in your coffee maker. 3. Take out the coffee filter and rinse it well. If yours is a mesh filter, you will see a whole bunch of dirt coming from the machine. Those are exactly the elements you want to get rid of. It has a pot holding coffee in the compartment above where water was poured to empty into the compartment which is the coffee pot underneath. During the same period, a French creator built the pumping percolator. It is a device in which boiling water in a base chamber pushes itself up a pipe and then drips or percolates all the way through the ground coffee back in the base chamber. Reservoir Your coffee maker must be capable of holding enough amount of water, especially if it is expected to make more than one cup at a time. But this doesn t mean you should choose one with big reservoir to the point that it takes over the whole machine. Safety Prior to your purchase, check out the wires and other electric parts of the coffee maker. This just adds to the conveniences that under cabinet coffee makers will provide you with. An under the cabinet coffee maker is, no doubt, one of the best coffee machines you can get for your home especially if you have space constraints. Sure enough, you don t want to let go of your blender or oven toaster just to make room for your coffee maker, don t you? While caffeine kick is the most popular and obvious reason for the coffee maker sales, coffee intricacies are catching up and becoming the next reason. Coffee machines have different forms and kinds and believe it or not, each one delivers a unique coffee taste. The widely used equipment is the "drip coffee maker" and some simply call it the brewer. The bottom part holds the heating element, the orange tube on the top for cold water from the hole in the reservoir, the orange tube on the bottom for hot water, and the power cord. The Brewing Process The coffee making cycle starts when you pour cold water into the reservoir. The water flows from the reservoir through a hole at the bottom of the bucket and then into the orange tubes located at the heating element part.