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What happened to the coffee machine exploding? Specific matters to use the espresso machine! Coffee machine rubber ring replacement

Published: 2026-01-14 Author:

Last Updated: 2026/01/14, With the increasing demand for coffee, many friends have purchased a coffee machine at home, so that they can brew a cup of coffee at any time to satisfy their stomachs. But recently, friends often reported to the front street that they are using the coffee machine. Occasionally,"frying chamber" phenomenon occurs during the process, that is, the handle will be in the extraction process.

With the increasing demand for coffee, many friends have purchased a coffee machine at home, so that they can brew a cup of coffee at any time to satisfy their stomachs. But recently, friends often reported to the front street that they are using the coffee machine. Occasionally, the phenomenon of "frying the chamber" occurs during the process, that is, the handle will "eject out of the warehouse" like it was blown out by pressure during the extraction process or when it is removed, leaving the entire table covered with coffee grounds and a mess.

In fact, Qianjie shared this phenomenon last year. The main reasons for this phenomenon can be divided into three! The first one is human improper operation, as well as the loss of components in the coffee machine itself and the quality problems of the coffee machine. But no matter what the case is, the emergence of the "explosion" phenomenon is by no means a good thing. Because that will not only make the scene a mess and increase cleaning work, but also bring certain safety hazards. So today Qianjie will come to share in detail the reasons for the "explosion" and the corresponding solutions.

1. The handle is not fastened. This is an easy situation for many friends who have just touched the coffee machine! Because I was worried that the coffee maker would be damaged by fastening too hard, I stopped fastening when there was some resistance.

A situation like this can often lead to the coffee maker breaking out during the extraction process! Because it is not fastened, the handle will have a large range of motion, which will easily be caused by the pressure applied during the extraction process, and coffee grounds will be fried everywhere. Therefore, before we start extracting, we must make sure that the handle can be tightly fastened to the brewing head to prevent "frying." It doesn't matter to use a little force because the coffee maker is not that easily damaged.

2. Aging of accessories In addition to improper operation, the handle will not be clamped tightly, but the aging of accessories will also cause this to happen. The most common one is the rubber ring that plays a sealing role (in fact, it is mainly it).

A rubber ring will be installed in the brewing head of the coffee machine, which plays a main role as Qian Jie said is sealing. But in addition, it is also an important accessory to fix the handle on the brewing head. When the rubber ring ages and hardens, the overall sealing performance will be reduced, and water leakage will easily occur during the extraction process. At the same time, it will be more troublesome to fix the handle, and it will be necessary to twist it to the place where the rubber ring damage is lower on the right side. If it is not fastened, as mentioned earlier, the handle of the coffee maker will easily burst out. Therefore, Qianjie suggested that when people find that coffee leaks frequently during the extraction process, or the handle needs to be snapped deeper to fix it, it is best to buy a brand new rubber ring to replace it. This not only makes the extraction more stable, but also reduces the probability of the handle breaking.

Generally speaking, the life of a rubber ring will be about one year, depending on the frequency of use of the coffee machine. You can buy it from any channel online, and the specific replacement method will also be included when purchasing, so Qianjie will not elaborate on it too much here. In addition to the rubber ring, the wear and tear of the bayonet and handle of the coffee machine's brewing head will also lead to a situation where the card is not tight, but relatively speaking, this probability is very small ~

3. Insufficient pressure relief. Basically, every semi-automatic machine will be equipped with an overpressure relief valve. After we complete the extraction of coffee or the extraction pressure reaches a certain peak, the pressure relief valve will start to activate and relieve the pressure by removing hot water.

It takes a certain amount of time to relieve the pressure. Although it is not long, if we remove the handle before the coffee machine has finished relieving the pressure, it will easily occur to the phenomenon of "exploding the chamber." Like some household coffee makers that are not as high-quality, they often require a longer depressurization time before stopping the extraction. These coffee opportunities that require long-term pressure relief can easily lead to the phenomenon of "exploding chamber". When the pressure relief is not timely enough and the pressure is too high for the handle to withstand, the handle will also burst out due to the pressure! This usually occurs when grinding is too fine, cake resistance is too high, or when using a blind bowl to wash the machine for a long time. So here are two aspects that Qianjie recommends everyone to pay attention to! One is not to remove the handle too quickly after the extraction is over. When you see hot water discharged from the water outlet, start removing the handle.

The other is not to carry out high-pressure extraction for a long time. When the resistance of the powder cake is too high and the liquid cannot be extracted for a long time, it is best to stop the extraction, remove the handle, adjust the degree of grinding, and then restart the extraction. The same is true for using a blind bowl washer, multiple times for a short period of time, preferably no more than 20 seconds at a time ~

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