Delonghi ec685 espresso makinası problemi

Yaklaşık 10 gün önce aldığım ve daha bir kez bile doğru şekilde çalışmayan, iadesi N11 tarafından onaylanmayan, teknik servise götürmeme rağmen problem yok çalışıyor bu tür problemler normaldir zaten zamanla geçer denerek geri verilen Delonghi ec685 espresso makinasında yaşadığım problem.
Final thoughts (updated March 28 2021):

I had problems with my Delonghi ec685 espresso machine right after purchase
but I eventually understood the cause of those problems, learnt to accept the limitations and found solutions.

I still use the machine and there are many factors for a good cup of espresso.
• Water pressure of the espresso machine
• Coffee grind size
• The amount of pressure applied with the tamper while thightning the coffee in the brew head
• Oil content of the coffee

Basically the water has to pass through the coffee grinds in short amount of time and with high pressure to extract the flavor.

The amount and steadiness of the water pressure is the first factor and is predetermined by the quality of the espresso machine. My Delonghi and most household espresso machines can create a said to be ideal 15 bar pressure but to my belief household machines cannot keep the same amount of pressure from the first flow of the water to the brew head till it stops and it gets reduced over time. More expensive higher-end machines claim to provide higher pressures and the pressure to be constant from start to end of the water flow.

Coffee grind size is a major factor as smaller grinds have more surface area for the water to contact and extract the flavors, caffeine etc. But if the grinds are too small for the machine the water pressure may not be sufficient for the water to flow around those grinds and the flow head gets clogged preventing the water to pass through.

Tampering with too much pressure may thightly pack the grinds in the flow head and block the water flow as well.

And finally if the oil content of the coffee beans is too high, the grinds may form a muddy mixture as they come into contact with water and again preventing the adequate water flow for proper extraction.

Once you find the correct combination and learn to control all these factors through trial and error, a good and satisfying cup of espresso can be achieved as I eventually did.

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