Espresso lovers know that over time, their favorite device begins to work more slowly, and the taste of the drink acquires an unpleasant bitterness or metallic taste. These are sure signs that the scale formed inside - a solid limestone plaque that inevitably appears when the water is heated. Ignoring this problem can lead to serious breakdowns of expensive equipment, so regular decalcination is a mandatory procedure.
There are many options on the market and choose scaling-free It is not easy because of the variety of compositions and forms of release. Some owners prefer proven brand chemicals, others are looking for affordable analogues or folk methods, risking damage to internal nodes. In this article, we will take a detailed look at the chemical bases of different solutions, compare their effectiveness and provide a step-by-step algorithm for safely cleaning your device.
Causes of scale formation and its impact on technology
The main cause of the deposits is the hardness of water, which is determined by the concentration of calcium and magnesium salts. When heated, these salts precipitate, forming a crystalline structure of calcium carbonate that sticks tightly to the metal surfaces of the boiler and tubes. This process is continuous, and even the use of filter jugs does not always completely solve the problem, since they only partially reduce the stiffness.
Scale has a low thermal conductivity, which causes the heating element (TEN) to work with increased load to achieve the desired temperature. Thermostat fixes that the water does not heat up quickly enough, and prolongs the operation time of the thermal power plant, which leads to overheating and eventual failure of the heater itself. In addition, narrowing of the passageways by the tubes makes it difficult to flow water, reducing pressure in the group and worsening the quality of coffee extraction.
⚠️ Warning: Ignoring the signs of scale, such as noisy pump operation or a drop in the temperature of the drink, can lead to expensive repairs that often exceed the cost of buying a new budget device.
In addition to mechanical damage, lime plaque is an ideal environment for the reproduction of bacteria and mold, which directly affects the hygiene of the prepared drink. Old scale can break off and fall into the cup, spoiling not only the taste, but also the appearance of espresso. Regular maintenance allows you to extend the service life of the device by 2-3 times.
Types of cleaners: chemistry against folk methods
All means for the removal of lime plaque are divided into two large groups: professional chemistry based on organic acids and folk remedies such as citric acid or vinegar. Professional decalcination They are developed taking into account the materials from which the seals and boilers of coffee machines are made, which guarantees their safety when used correctly.
Folk methods, in particular the use of acetic essence, are extremely aggressive for rubber gaskets and can cause their destruction, which will lead to leaks. Citric acid is considered a more gentle option, but its crystals can not dissolve well in cold water, forming an abrasive suspension that can damage the pump or clog thin channels.
- 🧪 Liquid concentrates The most popular form, easily dosed and quickly mixed with water.
- 💊 Tablets - convenient for storage and transportation, have a long shelf life.
- 🌿 Eco-means They are made with natural acids, are safe for the environment, but can act more slowly.
It is important to understand that DeLonghi, Saeco or Bosch It is often recommended to use your branded liquids, claiming that only they guarantee the preservation of warranty. However, many universal remedies based on sulfamic or lactic acid show comparable results at lower costs.
Comparative analysis of popular tools
When choosing a tool, it is important to pay attention not only to the price, but also to the active ingredient. Sulfamic acid is considered the “gold standard” for coffee machines, as it effectively dissolves calcium without damaging metals and rubber. Lactic acid acts milder but takes longer to react, and phosphoric acid is too aggressive for frequent use in household appliances.
Below is a table comparing the characteristics of the most common types of cleaners on the market. This data will help you make an informed choice depending on your car model and the degree of contamination.
| Type of instrument | Active substance | Safety for rubber | Speed of action | Price. |
|---|---|---|---|---|
| Branded liquid. | Acid complex | Tall. | Medium | Tall. |
| Universal gel | Sulfamine k-ta | Tall. | Tall. | Medium |
| Citric acid | Lemon k-ta | Medium | Low. | Low. |
| Vinegar (not rivers) | Vinegar k-ta | Low. | Medium | Low. |
It is worth noting that some manufacturers add corrosion inhibitors and foam suppressors to the compositions, which is especially important for automatic machines with cappuccinators. Using inappropriate chemicals can lead to the formation of abundant foam, which will be extremely difficult to wash out of the system.
Always check the composition of the product: the presence of chlorine or strong alkalis is strictly prohibited for food coffee machines, as they cannot be completely rinsed.
Step-by-step instructions for decalcination
The cleaning process may vary slightly depending on the model, but the overall algorithm remains the same for most automatic and carob coffee machines. Before starting the procedure, be sure to read the manual of your device, as some models have a special wash mode activated through the menu.
To begin with, it is necessary to prepare the solution by mixing the purifier with water in the proportion specified by the manufacturer of the product. This ratio is usually 1:10 or 1:20, but for highly contaminated machines, the concentration can be slightly increased if the instructions permit.
☑️ Preparation for decalcination
Pour the prepared solution into the water tank and start the cleaning process. If there is no automatic mode, pass water through the group and the capuchinator in small portions, taking breaks of 5-10 minutes so that the acid has time to dissolve the deposits. It is important not to pass liquid through the grinder if it is integrated so as not to damage the grinder.
⚠️ During the cleaning process, it is strictly forbidden to use the resulting liquid, since it contains dissolved heavy metal salts and chemical reagents.
After the tank is empty, you need to thoroughly wash the system with clean water. To do this, fill the tank with fresh water and drive it through all the nodes of the machine 2-3 times until any taste or smell of cleaning agent disappears. Acid residues can spoil the taste of the next coffee and damage the stomach lining.
Quality washing with clean water after decalcination is more important than the process of dissolution of scale, since it is the remnants of chemistry that most often spoil the taste of the drink.
Cleaning errors and precautions
One of the most common mistakes is using hot water to prepare a solution with vinegar or aggressive acids, which leads to the formation of caustic vapors. Breathing such fumes is dangerous for the respiratory tract, so all work should be carried out in a well-ventilated room.
Another common mistake is not enough exposure time. Many users immediately drain the solution, not giving it time to react. The chemical process of dissolving calcium carbonate takes time, and haste is not appropriate. For complex cases, you can leave the solution in the car overnight if the manufacturer allows it.
- 🚫 Use of vinegar - destroys rubber seals and glands, leaving a persistent smell.
- ⏱️ Time-breaking disorder Too fast passage of the solution does not give the cleaning effect.
- 💧 Bad rinse Residues change the pH of the water and the taste of coffee.
It is also worth remembering that frequent decalcination "just in case" is also harmful, since any acid to one degree or another affects the metal. Conduct the procedure strictly according to the regulations: usually every 2-3 months or after preparing 200-300 cups, depending on the hardness of your water.
What if the machine stopped pumping water after cleaning?
If after decalcination pump buzzes, but the water does not go, perhaps a piece of detached scale clogged the valve. Try to turn the water supply on and off several times, creating a hydraulic shock that will push the plug through. If it does not help, you will need to disassemble and clean the valves manually.
Prevention and extension of service life
The best way to fight scaling is prevention. Installing a magnetic water activator on the inlet hose or using quality filtered water will significantly reduce the rate of sediment formation. Softener filtersThe stains installed in the tank are also effective, but require regular replacement or regeneration.
Regularly check the condition of the mesh in the water tank and inlet valves. Fine debris and rust particles from pipes can serve as crystallization centers for salts, accelerating overgrowth of the system. Simply washing the tank with warm water once a week will help maintain hygiene.
If you go on vacation for more than a week, be sure to completely empty the tank and boiler of the coffee machine. Stagnant water contributes to the formation of biofilms and the deposition of salts even without heating. Proper preservation of technology is the key to its long life.
How often should decalcification be performed?
The frequency depends on the hardness of the water and the intensity of use. On average, when using filtered water - once every 3-4 months. If the water from the tap and very hard - once every 1-2 months. The machine itself can signal the need to clean the indicator.
Can I use the dishwasher?
No, you can't. Dishwashers contain alkalis and chlorine, which are aggressive to food metals and coffee machine rubber, and can also be toxic when ingested from coffee.
Is citric acid harmful to coffee machines?
In low concentrations and with complete dissolution of crystals, it is acceptable as a budget alternative. However, it is less effective against complex deposits and requires very careful washing so as not to damage the aluminum elements (if any) and not leave a taste.
Why did the coffee become sour after cleaning?
The car was probably not well rinsed with clean water. The acid residues in the system are mixed with coffee, distorting its taste. It is recommended to drive through the system 1-2 full tanks of clean water.
Should I change the filter after cleaning?
Yes, softener cartridges (such as Brita Intenza) lose their properties in the decalcination process, as they pass through an acid solution. After cleaning, the filter should be replaced with a new one.