Last Updated on October 23, 2023 by Pablo Barrantes
Among all coffee pod machines, we find that Dolce Gusto coffee machines are among the noisiest and produce the most vibration (together with the Nespresso). The noise and vibration are mostly accentuated in the water pump and are reproduced to the outside through the plastic parts of which the coffee machine is made.
The water pump is the component that produces the most vibration and noise in the coffee maker because it has a piston inside it that moves at high speed. Being aware of this, manufacturers put rubber mounts to dampen the vibration. However, this is reproduced throughout the machine.
Is the vibration and sound of my Dolce Gusto normal?
To answer this question, we measured the decibels emitted by a Dolce Gusto Mini Me coffee machine and found that they do not exceed 63 dB. The measurement was carried out using Sound Meter, a mobile app for Android.
Based on the data sheet provided by the pump manufacturer (ULKA E4), we can see that this component does not exceed 58 dB. With the above video, we want you to compare the vibration and sound of your new machine to determine if it exceeds the reference levels.
The water pump starts working while brewing coffee by moving the piston fast to inject hot water under pressure into the coffee pod to obtain the beverage. This process emits a certain vibration and sound.
When your Dolce Gusto coffee machine is no longer under warranty, and you notice that it still makes too much noise and has a very strong vibration, you can try to repair it yourself by paying attention to the following guidelines:
- Check that all the moving parts of the coffee machine are tight. When any of them is loose, it will vibrate excessively, and this will produce noise, so it is better to discard it from the start.
- Make sure you place the machine on a rigid surface that does not transmit any vibration to the machine’s supports.
- The rubber gaskets that hold the water pump to the machine chassis should also be securely in place. Disassemble the brewer and check that they are securely in place.
Let’s assume that you have already checked the above points and found that everything is in order, then continue reading this article to rule out other causes.
Can limescale build-up inside the pump cause the pump to vibrate and sound louder?
If all the components of the coffee machine, both internal and external, are properly adjusted and in good condition, the excessive sound and vibration produced by the machine can only come from inside the water pump.
Limescale build-up is a common occurrence on many internal components of the brewer. When it builds up inside the pump, it can clog the piston, spring, or other plastic components, forcing them to operate. This will generate a louder than usual vibration and sound.
Fortunately, this problem is easily solved. Just perform one or more descaling operations to eliminate all the limescale built inside the pump.
Can damage to the control board lead to excessive vibration and sound?
Given my experience repairing Dolce Gusto coffee machines, I can point out that one of the most common causes of excessive vibration and sound is a damaged control board.
We have already mentioned that the component itself that generates excessive vibration and noise is the water pump.
However, when there is a damaged control board, the wrong signal will be sent to the pump, and it will have erratic movement. This is because the function of the control board is to create an electromagnetic field that allows the pump to move correctly.
What should I do if there is damage to the control board?
Before checking the control board, rule out all the causes before this that could be causing the problem of excessive sound and vibration in the coffee maker, as this will be the least likely.
Once it has been verified that the damage is really in the control plate, the most advisable thing to do is to replace this whole part with one that works correctly. However, it should be noted that buying a new control board can be as expensive as buying a new coffee machine.
If this is not an option for you, you can resort to buying a second-hand Dolce Gusto coffee machine, which is much cheaper, and use its control plate to replace the damaged one. For more information on the control board, check out the following article: My Dolce Gusto coffee machine won’t turn on.