Regular maintenance of your coffee maker is the key to a long life of the device and the excellent taste of your morning espresso. The water used to prepare the drink contains calcium and magnesium salts, which, when heated, settle on the inner walls of the heating elements, forming a hard limescale deposit. If you ignore the need for cleaning, scale can lead to reduced performance, increased noise and even breakdown of expensive components.
Modern models Delonghi equipped with intelligent systems that independently signal the need for a procedure by flashing an indicator. However, many owners put off this process, not understanding the seriousness of the consequences of a clogged hydraulic system. In this article we will look in detail at how to correctly perform decalcificationwhat tools to use and how to avoid common mistakes.
Proper rinsing not only restores the steam power to the factory setting, but also ensures the correct brewing temperature, which is critical for releasing the aroma of the coffee beans. Neglecting this maintenance stage may result in refusal of warranty repair, since failure due to scale is not considered a warranty case.
Signs of contamination and the effect of scale on the operation of the device
Determine what your coffee machine Delonghi Cleaning is urgently required; this can be determined by a number of indirect signs that appear long before an error appears on the display. The first alarm bell is often a change in the preparation time of a portion: water begins to pass through the coffee tablet more slowly or, conversely, too quickly, which indicates a violation of the pressure in the system.
In addition, you may notice a decrease in the temperature of the finished drink. The layer of lime deposits acts as a heat insulator, interfering with the effective transfer of heat from the heating element to the water. As a result, even at the highest temperature setting, the coffee remains warm rather than hot. Another characteristic sign is the appearance of extraneous noise or buzzing during pump operation.
The most obvious signal is the flashing decalcification indicator, which lights up after a certain number of cups or power cycles. Some advanced models such as the series Magnifica S or Dinamica, have a built-in water hardness meter that calculates maintenance intervals individually.
- 📉 A noticeable reduction in the pressure of the steam jet when frothing milk.
- 🌡️ The coffee has become less hot than usual, despite the previous settings.
- 🔊 The appearance of a characteristic crackling or buzzing sound when heating water.
- 💧 White flakes or sediment may appear in the finished drink.
⚠️ Warning: If you live in an area with very hard water, the standard cleaning cycle may not be enough. In such cases, it is recommended to carry out the preventive flushing procedure more often than required by the indicator.
Ignoring these symptoms leads to the water supply channels becoming narrower and the heating element overheating. Ultimately, this can cause breakdown of the thermoblock or failure of the solenoid valves, the repair of which will cost much more than regular maintenance.
Choosing a descaling agent: original or analogues
The question of choosing a cleaning product is faced by every coffee machine owner. The market offers many options, from original solutions Delonghi EcoDecalk to cheap analogues based on citric acid. The original product was developed specifically taking into account the materials used in the hydraulic system of the Italian manufacturer.
The main advantage of specialized solutions is their chemical composition. They effectively dissolve carbonate deposits without damaging plastic tubes, rubber seals and aluminum alloys of heat exchangers. The acidity of such products is strictly balanced so as not to cause corrosion of internal parts.
The use of aggressive acids such as acetic or hydrochloric acid is strictly prohibited. Acetic acid can corrode rubber seals, causing leaks, and also gives coffee an unpleasant aftertaste that is very difficult to remove even after repeated rinsing with clean water.
If you decide to use generic products or citric acid, concentration must be strictly observed. A solution that is too strong can damage the system, and a weak solution cannot cope with a dense layer of scale. Always check the composition of the product for the presence of chlorine and phosphates; they should not be present.
To prepare a solution with citric acid, use a proportion of 20-30 grams of powder per 1.5 liters of water. Stir thoroughly until the crystals are completely dissolved so they don't get stuck in the valves.
Service centers can easily determine the type of fluid used by the residual odor and the condition of the internal components.
Preparing the coffee machine for the decalcification procedure
Before starting the cleaning process, you must properly prepare the device. This stage is often underestimated, which leads to poor-quality results or even damage to equipment. First, remove the coffee grounds container and wash the drip tray with warm water and detergent.
Particular attention should be paid to the water softener filter if it is installed in the tank. It must be removed before starting to fill the decalcinator, since the chemical solution can destroy the ion exchange resin inside the filter, rendering it inoperable.
☑️ Preparing for cleaning
If there is any water left in the tank, it must be drained. Then a cleaning agent diluted with water in the proportion specified in the instructions for a specific model is poured into the tank. Usually this is 100 ml of concentrate per 1 liter of water, but for models with a large tank the volume may differ.
Place a container with a volume of at least 1.5 liters under the spout of the cappuccino maker or hot water tap. It is better to use transparent dishes to visually control the color of the liquid coming out and the presence of scale flakes. Make sure that the cappuccino maker tube is lowered into the container and not hanging in the air.
⚠️ Attention: Never pour cleaning agent into the grain compartment! This will cause irreversible damage to the coffee grinder and brewing unit. Liquid is poured only into the water tank.
After preparing all components, you can proceed to activating the cleaning mode. In different models Delonghi This process may vary, so it is important to know the steps for your specific device.
Step-by-step instructions: activating the cleaning mode
The process for starting the descaling program depends on the interface of your coffee machine. On models with display such as Primadonna or Ecam, you need to enter the maintenance menu. This is usually done by long pressing the menu button or a key combination.
For models without display, such as popular Magnifica, sequential button presses are used. It is often necessary to press the steam and hot water buttons simultaneously for a few seconds until the decalcification indicator lights up. The exact combination can always be found in the user manual.
After activating the mode, the machine can warm up the water. This is a normal part of the process and is necessary to make the chemical reaction more efficient. Don't be alarmed if the device starts making pumping sounds - it's preparing the system for flushing.
| Coffee machine model | Activation method | Indication | Cycle duration |
|---|---|---|---|
| Magnifica S | Steam button + funnel button (3 sec) | Orange indicator flashing | About 30 min |
| Ecam 22.110 | Menu button (long) → icon selection | LED above the steam button | About 40 min |
| Dinamica | Menu → Maintenance → Decalcification | Message on display | About 50 min |
| Autentica | Menu button → shower icon | Flashing indicator | About 35 min |
When the mode is activated, turn the steam knob or press the hot water button (depending on the model) to start the process. The solution will begin to flow into the system. It is important to ensure that the container under the spout does not overfill and empty it in a timely manner.
What to do if the cycle is interrupted?
If the decalcification process was interrupted (for example, the lights were turned off), the coffee machine may not exit the cleaning mode. In this case, you need to turn off the device, wait 10 seconds and turn it on again. Often the machine will automatically continue the process where it left off or require the program to be restarted. Do not attempt to brew coffee until the light goes off completely.
In some models, the process takes place in several stages with pauses. During pauses, the chemical solution remains in the system, acting on deposits. Do not turn off the machine at this time, even if it seems to be “asleep”.
Washing step: removing chemical residues
Once all the decalcifier solution has passed through the system, the coffee machine will automatically go into rinse mode or require your action. This is a critical step because any remaining acid in the hydraulic system will ruin the taste of the coffee and may be harmful to your health.
It is necessary to thoroughly rinse the water tank to remove chemical residues and fill it with clean drinking water to the maximum level. Place the container under the spout again and start the draining process by following the display or blinking indicators.
The rinsing procedure with clean water often needs to be repeated twice to ensure complete removal of chemical compounds. The outlet water should be completely clear and odorless. If you smell even a slight odor of the product, you must continue washing.
Complete removal of the cleaning agent is key to safety and good taste. Do not save water at the rinsing stage; it is better to waste an extra liter than to drink coffee with a chemical taste.
For models with system Eco Decalc the process can be fully automated. The machine itself controls the volume of rinsing water and the time of each cycle. In such devices, you just need to add water as needed, following the prompts on the screen.
Once all rinsing cycles have been completed, the decalcification indicator should go off. If it continues to flash, the cycle may have been interrupted or the system may have frozen. In this case, try turning off and on the coffee machine, resetting the error.
Common mistakes and care recommendations
Many users make common mistakes that ruin all maintenance efforts. One of the most common is using hot water to dilute the product. The chemical reaction may be too violent, and acid vapors may damage the plastic elements of the machine.
Another mistake is saving on the frequency of procedures. Some people wait until the machine stops working completely instead of cleaning when the indicator lights up. Regularity is the key to longevity.
- 🚫 Do not use distilled water all the time, as it may not be correctly read by the hardness sensors of some models.
- 🚫 Do not leave water in the tank overnight after cleaning, drain the remains.
- 🚫 Don’t ignore replacing softener filters if you use them.
It is also worth mentioning cleaning the brewing unit. Although this is a separate procedure, it is recommended to be performed in conjunction with decalcification. Remove the unit, wash with warm water without detergents and let dry. This will improve the quality of coffee extraction.
⚠️ Attention: If after a complete decalcification procedure the indicator continues to light and the taste of the coffee has not improved, it is possible that scale has blocked the narrow channels so much that mechanical cleaning is required at a service center.
Following simple care rules will allow your Delonghi serve faithfully for many years. Regular cleaning is a small price to pay for consistently delicious coffee and no costly repairs.
How often should decalcification be carried out?
The frequency depends on the water hardness and intensity of use. On average, the procedure is required every 2-3 months or after preparing 200-300 cups. If the water is very hard - more often.
Can tablets be used in dishwashers?
No, absolutely not. The composition of dishwasher tablets contains alkalis and components that can destroy aluminum parts and rubber seals of the coffee machine.
What to do if the original liquid runs out?
You can use special universal products for decalcifying coffee machines of other brands (for example, Topperr, Filtero), but strictly follow the dilution instructions. Citric acid is an acceptable but less effective option.
Why does coffee taste sour after cleaning?
Most likely, you did not flush the system thoroughly with clean water. It is necessary to carry out the washing cycle 1-2 more times until the taste disappears completely.