Espresso machine cleaning step how long is the recoil cleaning time of espresso machine?

I believe baristas will encounter this problem. In the morning, I adjusted the extraction parameters of espresso coffee, but by noon, the parameters were not accurate, and the coffee flow rate slowed down obviously.

Qianjie explained this problem in two ways before. The first was rainy days. When the humidity of the air was relatively high, the coffee beans in the bean bin were easy to get wet. When grinding beans, they were also easy to be disturbed by water vapor, causing coffee to be powdered and tasteless, and at the same time, it would also cause unstable extraction. The second is to adjust the parameters in the morning when the original coffee beans, afternoon to add new coffee beans to the bean bin, so you need to adjust the extraction parameters again.

But if neither of these conditions occurs, it may be because the espresso machine is too dirty inside. Espresso machine in the extraction of coffee, there will be a small amount of coffee powder is poured into the brewing head inside. If long-term coffee extraction is accumulated over time, there will be a lot of coffee residue accumulated inside the brewing head. It will block the water from the brewing head, making the coffee flow slow and unstable. Moreover, the accumulated coffee residue will also affect the water quality, making the coffee appear bad flavor. Therefore, before each coffee machine is turned off, it is necessary to clean the inside of the brewing head. A method called "backwashing" is used. The first choice we will use is a blind bowl, which is a powder bowl without filter holes, so that the water released by the brewing head has no place to go, but can only return to the pipe inside the brewing head to wash away the coffee residue.

To do this, snap the blind bowl onto the handle and snap the handle onto the brewing head as you would for coffee extraction.

Then turn on the extraction button, the extraction is over for 10s, and the pressure relief outlet will discharge the sewage with coffee residue.

When the handle is pulled out, there will also be a small amount of sewage with coffee residue in the blind bowl.

What we continue to do is to pour out the dirty water in the blind bowl, put on the brewing head, and continue to repeat the previous steps until the water in the blind bowl is clean. Repeat 5 times to achieve this effect. Some barista friends will say,"I do backwashing every day at closing time, why do I still have unstable extraction parameters?" This is because it is not cleaned. Some coffee residues are tricky, and ordinary water backwashing is difficult to remove, which requires coffee machine cleaning powder to solve.

The method of use is to pour 2-3g of cleaning powder into the blind bowl, then button the brewing head, turn on the extraction button, and stop the extraction after 5-7 seconds. At this time, the pressure relief outlet will spray white sewage, which will contain coffee residue.

Pull out the handle, there are residual cleaning powder soaked in water and coffee residue on the blind bowl. At this time, it is necessary to gently side, pour out the water and residue in the blind bowl, keep the cleaning powder soaked in water, continue to button the brewing head, open the extraction button for 5-7 seconds, then pull out the handle to pour out the water in the blind bowl, and then button the brewing head until the cleaning powder in the blind bowl disappears when the handle is pulled out. Repeat 4-5 times. Next, empty the water in the brewing head and gently brush the water separating net and rubber ring with a brush. After cleaning the blind bowl, continue to fasten the brewing head and repeat the step of backwashing with clean water, but the purpose is to ensure that the cleaning powder inside the brewing head is drained. Repeat 7-10 times.

The frequency of cleaning with cleaning powder does not need to be too frequent, usually once a day for water backwash, once a week for cleaning powder backwash.