Regular maintenance of coffee equipment is not just a whim, but a necessity to maintain the quality of the drink and extend the life of the device. Scale formed on the heating elements significantly reduces thermal conductivity and increases the load on the system. Citric acid It is an affordable and effective treatment for calcium deposits if used correctly. Unlike aggressive chemical reagents, this method requires strict adherence to concentrations so as not to damage the seals.
Many owners coffee-machine And carob espresso machines are wondering about the safety of home remedies. The answer lies in the details: solution concentration and exposure time play a crucial role. Incorrectly selected dosage can damage the internal tubes or metal parts of the boiler. However, with a competent approach, you can restore the performance of the device without unnecessary costs for expensive branded tablets.
In this article, we will discuss all the stages of the process, from the preparation of ingredients to the final washing of the system. You will learn how often you need to perform the procedure and what are there technicality for different types of equipment. It is important to understand that each brand has its own design features that must be considered before starting work.
Why is the scale formed and what is dangerous to ignore
The main reason for the appearance of solid deposits inside the coffee machine is the hardness of the water used. In the composition of tap water there are always salts of calcium and magnesium, which precipitate when heated. This process is accelerated at high temperatures inside thermal-block Or a boiler. Over time, the scale layer becomes thicker, which leads to narrowing of the ducts and deterioration of fluid circulation.
Ignoring the problem is fraught with serious consequences for technology. First of all, the heating element suffers, which begins to overheat due to poor heat transfer. This can lead to its breakdown or failure of the control electronics. In addition, pieces of detached scale can clog narrow valves and a custard block.
⚠️ Warning: Completely ignoring the symptoms of scale (noise at work, reduced vapor pressure, changing coffee flavor) can lead to expensive repairs that often exceed the cost of a new device.
The quality of the drink also depends on the purity of the internal pathways. Scaling gives water a foreign taste and can change the acidity of espresso. Regular decalcification It allows you to maintain a stable pressure and temperature of brewing. This is especially important for lovers who appreciate the subtle flavors in each cup.
The advantages of citric acid over other means
The choice of cleaning agent is often the subject of controversy among owners of coffee equipment. Citric acid is distinguished by its availability and predictable chemical composition. Unlike vinegar, it does not have a sharp smell, which can persist for a long time in plastic parts and tubes of the device. This makes the service process more comfortable for the user.
Another important advantage is the softness of the effect on rubber seals with proper dilution. Strong mineral acids can cause metal corrosion or deformation of elastomers. Organic acid It effectively dissolves carbonates without causing critical damage to the structure. However,
- 🍋 Affordability and low cost of the product in any grocery store.
- 🌬 The absence of a persistent unpleasant odor characteristic of acetic solutions.
- 🛡 Safety for most plastic elements when dosage is observed.
- 💧 Ease of washing off the residues of the product with clean water without foam formation.
It is worth noting that many manufacturers officially recommend using only their branded products. The use of alternative methods, such as citric acid, may in some cases affect the use of warranty. Therefore, before the procedure is recommended to read the instructions for your model. coffee-machine.
The myth of efficiency
There is an opinion that citric acid is weaker than special means. In fact, with the right concentration (about 2-3%), it copes with scale no worse, but requires more frequent use for prevention.
Necessary tools and solution preparation
Before the process begins, all components must be prepared so that the procedure goes smoothly and safely. You will need the citric acid itself in the powder or a concentrated solution, as well as a mixing container. It is important to use clean dishes that are free of grease residues or detergents that may react.
Proportions are critical. Too concentrated solution can damage the internal parts, and a weak one will not give the desired effect. The optimal ratio is considered to be 20-30 grams of powder per 1 liter of water. The water should be soft, preferably filtered or bottled so as not to add a new portion of salts to the system.
☑️ Preparation for cleaning
Some models of coffee machines are equipped with built-in tanks for decalcination, where the finished solution is poured. In other cases, especially in carob machines, the solution is poured directly into the water tank. Make sure the powder is completely dissolved before turning on the device, as the crystals can damage the device. pump Or get stuck in the valves.
| Type of coffee machine | Concentration (g/L) | Exposition time | Water temperature |
|---|---|---|---|
| Carrot (espresso) | 20-25 | 15-20 minutes | 40-50 °C |
| Automatic. | 30g | Programme cycle | Room room |
| Drip | 20g | 30 minutes | Cold. |
| Combined | 25g | 20 minutes | 40 °C |
Step-by-step instructions for cleaning the carob coffee machine
The process of cleaning carob models requires manual control of each step. First, remove the filter from the horn and rinse it with warm water. Then prepare the solution of citric acid according to the proportions indicated above and pour it into the water tank. Make sure the drip tray is empty to avoid overflowing with dirty water.
Turn on the coffee machine and let it warm up to operating temperature. After that, start the process of spilling water through the group, as in the preparation of espresso, but without coffee. Pass about half of the prepared solution through the system. This will allow the active medium to penetrate all the nodes and begin dissolving the sediments.
⚠️ Note: Do not leave a solution of citric acid inside the heating element of the carob machine for more than 30 minutes, as prolonged exposure to acid on aluminum (if it is in the design) is undesirable.
After running half the solution, turn off the device and leave it for 15-20 minutes. This time is required for a chemical reaction. Then turn the machine on again and drive away the remaining solution. The final step is a thorough washing of the system with clean water - pass through the group at least 1-2 liters of fresh water to completely remove the residues of acid and dissolved scale.
To enhance the effect, you can slightly warm the solution of citric acid before pouring, but do not exceed the temperature of 50 degrees so that chemical reactions do not begin prematurely.
Features of decalcination of automatic coffee machines
Automatic models often have a built-in cleaning program that simplifies the task. However, using citric acid instead of branded products requires the machine to be manually operated or using “circumvents” as sensors may not recognize the home remedy. First empty the water tank and pour the prepared solution there.
If there is a “Decalcination” mode on the menu, run it. The machine itself will supply water in portions, making pauses. If there is no such mode or it requires a special key, you can manually open the hot water tap or run the strait, simulating the operation of the program. The main thing is to ensure contact of the solution with all internal surfaces. hydraulics.
It is important to monitor water level indicators. Automatics may mistakenly count the level due to a change in the density of the solution. If necessary, add liquid so that the pump does not work "dry". After the cycle is completed, the program usually requires washing. Do it twice, pouring clean water to ensure that there is no taste of acid in the future of coffee.
- 🤖 Use manual water supply mode to control the volume of fluid flowed.
- 💧 Be sure to rinse the brewing unit separately under running water if it is removable.
- 🔄 Repeat the clean water wash cycle twice to completely remove the reagent.
- 👀 Watch the color of the water coming out – it should be completely transparent.
Some modern models coffee-maker equipped with a counter of cooked cups, which blocks the work if necessary cleaning. Reset this counter without the original means is sometimes impossible programmatically. In such cases, you have to go to tricks or put up with a burning indicator, continuing to use the machine if it does not block the heating completely.
The main rule for automatic machines: even if the machine does not recognize citric acid as a special means, the physical process of dissolving scale will still occur, the main thing is to thoroughly wash the afterward system.
Final washing and checking the result
The final step is no less important than the cleaning itself. Citric acid residues can change the taste of coffee, making it excessively acidic, which is especially noticeable in espresso. Washing should be carried out with a large volume of water. For carob machines, it is recommended to pass a minimum of 1 liter through the system, and for automatic cars - to perform a full rinse cycle.
After washing, carefully examine the outgoing water. It should be transparent, without suspensions and bubbles. If the water is cloudy or contains flakes, the washing procedure should be repeated. Also worth checking the smell: it should be neutral, without the characteristic sour shade. This is a sign that the system is ready to go.
Make a trial run and make a cup of coffee "to nowhere." Appreciate the aroma and taste. If everything is in order, you can return to normal operation. Regular maintenance, carried out every 2-3 months (depending on the hardness of the water), will allow you to forget about problems with heating and pressure for a long time.
⚠️ Warning: If the taste of coffee is unpleasant after cleaning or a metallic taste appears, the acid concentration may have been too high and the internal coatings or seals have been damaged.
Frequently Asked Questions (FAQ)
Can I use citric acid in DeLonghi or Saeco coffee machines?
Technically possible, but the manufacturers of these brands strongly recommend the use of original products. Citric acid may not be recognized by the stiffness sensors and the machine will continue to signal the need for cleaning. In addition, in some models with boilers of alloys, acid can cause corrosion with frequent use.
How often should you clean the coffee machine with citric acid?
The frequency depends on the hardness of the water and the intensity of use. On average, the procedure is recommended to be carried out every 2-3 months or after preparing 200-300 cups. If you use filtered water, the interval can be extended to 4-6 months.
Is citric acid dangerous for rubber seals?
At recommended concentrations (2-3%), citric acid is safe for most modern rubber and silicone seals. The danger is only the use of pure powder or very concentrated solutions, which can cause drying and cracking of rubber.
What to do if the coffee becomes sour after cleaning?
This means that the system was not well washed. It is necessary to prepare another 1-2 liters of pure water and pass them through the coffee machine in the strait mode. If the taste persists, it is possible that the acid has damaged the metal elements and will require a specialist to diagnose it.