![]() Some also have self-cleaning cycles and filtration systems. Many digital drip coffee makers also allow you to adjust the strength of the brew - if want a stronger cup of coffee the brewing time slows to accommodate. This way, if you're the first one out of bed making coffee for an entire household, you can grab your first cup before the entire pot is prepared. ![]() Another interesting feature available is the ability to pause in the middle of a brewing cycle. In some machines, a built-in grinder means that cup of coffee will also be nice and fresh, ground just before brewing began. By the time you roll out of bed and trudge to the kitchen, your coffee is ready and waiting. ![]() ![]() Assuming no calamity has struck your coffee maker, what are some of the advanced features it might offer? Well for starters, many have a programmable timer, meaning you can get everything ready the night before and when your alarm clock starts beeping, the coffee pot starts gurgling. Because it's very challenging to get replacement parts, you'll probably have to buy a new coffee maker if one of these problems disables your machine. There are two problems that are nearly impossible to fix: failure of one of the heat-sensitive switches and failure of the heating coil. The normal way to solve this problem is to run vinegar through the machine once, and then run two batches of water through to clean out the vinegar. This is especially true of the aluminum heating tube. The tubes can get clogged with calcium.You can usually fish out the debris that causes this problem with a toothpick. The one-way valve can get clogged open or closed.In either of these cases, it's best to get a pro to replace it or buy a new coffee maker - replacing it improperly can lead to a fire. The power cord or on/off switch can go bad.On the next page, we'll learn about them, as well as what happens when disaster strikes and the coffee maker goes out of commission. In some drip coffee makers, there are also different advanced features that give you more control over your coffee. This makes coffee machines extremely reliable. As you can see, there's no mechanical pump of any type and really no moving parts (except for the moving portion of the one-way valve). Sounds pretty simple, right? This boiling-water pump, by the way, is the same mechanism that drives a percolator-type coffee machine. This coffee oil, released during the roasting process, is called caffeol. The hot water flows through the ground coffee beans, picking up their oil essence on the way down into the coffee pot.The water flows up the white tube and is dispersed to drip evenly on the waiting coffee grounds.What happens next is exactly what happens in a typical aquarium filter: The tube is small enough and the bubbles are big enough that a column of water can ride upward on top of the bubbles. When the water boils, the bubbles rise up in the white tube.When you turn on the switch, the resistive heating element starts heating the aluminum tube and eventually the water in the tube boils.This all happens naturally because of gravity. Then the water flows through the one-way valve, into the aluminum tube in the heating element and then partially up through the white tube.When you pour in cold water, it flows from the reservoir through the hole and into the orange tube.On the other hand, if you're gunning for an insider's look at your kitchen's appliance of the year, we'll crack it open and take a peek on the next page. If your tastes do run fancier, check out the article How the Clover Coffee Maker Works. There are lots of coffee makers on the market that can arguably make a better pot of Joe, but in this article, we'll be focusing on the trusty drip. For more about details about what's in your morning cup, check out the article How Coffee Works. The two most commonly grown species of coffee plants are Coffee arabica (Arabica coffee) and Coffea canephora (Robusta coffee). Coffee beans as we know them are actually the seeds of the fruit of the coffee plant - called coffee cherries - and these popular plants have been cultivated by man for hundreds of years. Coffee plants are evergreen tropical shrubs and small trees, and they grow best between the Tropic of Cancer and the Tropic of Capricorn (often referred to in the coffee world as the Bean Belt) which makes sense because the plants enjoy lots of rain and gentle temperatures. Before we get into that, however, let's do a quick coffee rundown. By the end of this article, you may look at your old friend in a completely new way. We'll also look at the possible problems that might cause your coffee maker to stop working. ![]() In this article, we'll look inside a typical drip coffee maker so you can understand exactly what's happening when you make coffee. ![]()
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