What is the reason for the leak in the espresso machine? Why does the coffee maker produce water when extracting and concentrating?

Recently, many friends responded backstage in Qianjie: "the coffee machine often leaks in the process of extraction and concentration."

This phenomenon is actually very easy to solve, we can understand the principle. Normally, in the process of extraction and concentration, water is only infiltrated by the pressure exerted by the coffee machine because it is in an airtight space. However, if there are gaps in the space and are not closed enough, then water will seep out of these cracks and form bypass water. If the coffee machine leaks frequently, Qianjie suggests that we must pay attention to it. Because the leakage will not only easily cause these bypass water to fall into the cup and cause miscalculation and dilution of the concentration of espresso, but also make the coffee machine unable to press fully, because the gap is too large and the pressure cannot be "piled up". Naturally, it is very difficult to extract delicious espresso.

The coffee machine on the front street will have such a problem every once in a while, which is hard to avoid. But it doesn't matter, it's not a big problem, as long as it's not a coffee machine malfunction, it's not difficult to fix it. Today in front of the street, let's share why the coffee machine has the problem of water leakage in the process of extraction, and how to solve the problem of water leakage.

First, apron aging basically, when there is a frequent leakage of coffee machine, more than 90% of the probability is due to "apron aging". There is a layer of rubber ring behind the water distribution network in the head of the coffee machine. The rubber ring has two functions: one is to fix the water distribution network, and the other is to seal the powder bowl during the extraction process.

Due to the material problems of the apron and the wear and tear every day, the wear rate of the apron is much faster than that of other parts. The service life of the rubber ring is about one year, and a year later, the coffee machine will basically leak. When we buckle the handle, we find that it is easier to buckle, and the position when fastening deviates greatly from the original position, if there happens to be a leakage, then the mother doubts that it is caused by the aging of the rubber ring (high probability). When we determine that the problem comes from the aging of the apron, we can start to replace the apron. It is not difficult to replace the apron, but because there are other situations that can lead to leakage, the last explanation is on the front street of the apron replacement. You can first see if it may be caused by other reasons, and then decide whether to replace the rubber ring.

Second, the handle is not jammed this is second only to the rubber ring aging will occur after the problem, that is, the handle is not stuck. In order to reduce wear and tear, many friends do not dare to use force when clasping the handle. Then, because the buckle is not hard enough, the powder bowl does not reach the specified position and does not have a sealing effect, so the water has a lot of cracks that can seep out.

This situation is very easy to judge, there are two points: one is to evaluate whether the force used in the clamping handle is strong enough, and the other is to observe whether the pressure increases during the extraction process. Generally, the handle is not jammed, so it is difficult for the coffee machine to provide pressure. So we can combine these two points to determine whether the coffee maker is leaking because the handle is not jammed. Of course, the most direct way to measure is to make a new cup directly and remember to push hard when fastening.

Third, there are too many sundries on the powder bowl, which is a popular saying on the Internet, because the whole powder bowl of the coffee powder cloth is on the outside, so that the handle cannot be sealed after being stuck, which leads to the phenomenon of water leakage. But in fact, leakage caused by too much debris is very rare! The reason is very simple, in order to achieve the premise of this condition, then the handle must first be very dirty, the powder bowl surrounded by coffee powder. But this is almost impossible, unless the coffee machine is not clear on the inside of the head for a long time, in most cases it is the first two.

In addition to the above three points, are there any other reasons such as inappropriate handle, excessive filling of coffee powder, and so on? Well, these situations are the same as the second point, it is good to see the reason, Qianjie does not explain too much. Then let's share with Qianjie how to replace the rubber ring of the coffee machine.

How to change the rubber ring of the coffee machine? Simply, we just need to find and buy the same rubber ring from the website of the online mall or coffee machine, and then follow the video steps assigned by the merchant to remove the original rubber ring and replace it with a new one. Because the structure of different coffee machines is different, the replacement of aprons is different. Here in Qianjie, take the lelit3 used as an example, which is how most coffee machines change their rubber rings. First of all, we take out a strong pry knife, or a screwdriver. Then lean down, find the position of the apron from the brewing head of the coffee machine, point the pry knife at the apron or the water diversion net shell under the apron, and pry it out with brute force.

Yes, it's that simple and rough! After prying down, we will replace the new rubber ring and put it back on the head. Although it looks very simple, in fact it is not difficult. Of course, in the process, we can also properly clean the water distribution network to ensure the "physical and mental health" of the coffee machine.

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FrontStreet Coffee is a long-established specialty coffee roaster in Guangzhou China, selling freshly roasted beans from its own farm in Yunnan as well as dozens of carefully selected single-origin beans from around the world for both pour-over and espresso. The products deliver consistently excellent quality and great value, with shipping within 24 hours. Guangzhou’s FrontStreet Coffee shop is recommended by many coffee lovers, and the beans are now available online at the Tmall 。

Important Notice :

前街咖啡 FrontStreet Coffee has moved to new addredd:

FrontStreet Coffee Address: 315,Donghua East Road,GuangZhou

Tel:020 38364473