The use of specialized cleaning tablets to remove coffee oils is a mandatory procedure if the pressure in the carob group has dropped and the taste of the espresso has acquired a rancid tint. The accumulation of oxidized fats inside the dispersion system and on the walls of the brewing unit occurs unnoticed by the eye, but critically affects the operation boiler and extraction quality. Ignoring the need for decalcification and removal of oils leads to clogging of the thin channels through which water is supplied, which ultimately causes overheating of the heating element or complete failure of the expensive pump.
To achieve maximum effect, use the tablets immediately after opening the package, as they quickly absorb moisture from the air and lose some of their active chemical power.
Regular maintenance using chemicals for coffee machines can extend the life of the device for years to come. Unlike regular water or vinegar, special formulations contain alkaline components that can break down complex lipid compounds that do not dissolve at standard brewing temperatures.
The mechanism of action of cleaning compositions on coffee fats
Most quality cleaners are based on sodium percarbonate combined with safe surfactants. Upon contact with hot water, a violent chemical reaction begins, during which active oxygen is released, literally pushing contaminants out of the porous metal structures and rubber seals. Coffee oilsWhen they harden, they form a dense film that interferes with the uniform distribution of water through the coffee tablet, which leads to channeling and uneven extraction.
The use of tablets allows you to dissolve this plaque without mechanical intervention, which could damage the delicate surface of the dispersion shower. The chemical composition penetrates into hard-to-reach places in the hydraulic system, including valves and connecting hoses, where regular flushing with water is powerless. It is important to understand that the reaction requires a certain temperature, usually around 90-95 degrees Celsius, so cold washing will not give the desired result.
After completing the cleaning cycle, it is necessary to rinse the system thoroughly, as residual alkaline solution can change the pH balance of the water and spoil the taste of the next drink. Some coffee machine models such as Lelit Bianca or Lelit Mara X, have an automatic flushing mode that optimizes this process, but manual control will never be superfluous.
The tablets act by releasing active oxygen, which oxidizes and breaks down old fat deposits without damaging the metal parts of the machine.
Preparing equipment before cleaning
Before you begin the oil removal process, you need to make sure that the coffee machine is warmed up to operating temperature. Cold water does not fully activate the chemical components of the tablet, which will make the procedure a waste of time and reagents. Drain any remaining water from the drip tray and empty the drip tray to avoid overfilling during backwash cycles.
Remove the shower head (dispersion screen) and check its condition. If the holes are heavily clogged with fossils, it is better to first soak them in a separate solution or clean them with a special brush. The metal filter in the idle horn also requires attention: make sure that it is not deformed and has standard perforations for reverse flow of water.
Insert an empty coffee-free cone into the group and run about 100 ml of clean water to wash away any loose particles of old coffee dust. This will prevent a thick mess from forming when mixed with the cleaner. Make sure the water tank is full as the volume of liquid will decrease during the cleaning process due to evaporation and drainage.
Step-by-step instructions: how to use coffee oil tablets
The cleaning process varies depending on the type of coffee machine, but the basic algorithm for carob models remains the same. Place one tablet in a blank bottle with a metal filter plug. Do not use paper filters or baskets for ground coffee, as the tablet must dissolve directly in the water circulating through the group.
Insert the horn into the group and secure it tightly. Run the water flow for 5-7 seconds, then stop the flow. Allow the tablet to dissolve and sit for 10-15 seconds until the concentration of the solution reaches its maximum. Repeat the cycle of turning the pump on and off several times: 10 seconds on, 10 seconds off. The total duration of active exposure should be about 2-3 minutes.
After the main cycle, a thorough rinse must be performed. Run at least 1-1.5 liters of clean water through the group, alternating short pump activations with pauses. The output water should become absolutely transparent, without bubbles and a characteristic chemical odor. If the machine is equipped with a convection steamer, do not forget to clean the steam wand using a special product or baking soda, if the manufacturer allows it.
☑️ Checklist for proper cleaning
Comparison of popular coffee machine cleaners
The market offers many chemistry options for servicing coffee equipment, and the choice depends on the model of the device and the personal preferences of the user. Some brands make universal products suitable for all carob machines, while others develop specific formulas for their brands, such as Urnex or Durgol.
| Brand | Base type | Exposure time | Features |
|---|---|---|---|
| Urnex Cafiza | Tablets | 10-15 min | Biodegradable formula, odorless |
| Durgol Espresso | Liquid | 5-10 min | Fast acting, suitable for automatic machines |
| Puly Caff | Powder/Tablets | 5-7 min | Aggressive removal of tough stains |
| Chemis | Tablets | 10 min | Budget option, requires thorough washing |
When choosing a product, pay attention to the availability of safety certificates for food equipment. Cheap analogues may contain chlorine or phosphates, which corrode aluminum alloys and damage rubber gaskets. High-quality tablets do not have a strong odor and are completely rinsed with water in a standard cycle.
The secret of professionals
To enhance the cleaning effect, you can preheat the idle cone by pouring boiling water over it so that the tablet begins to react instantly.
Typical mistakes when servicing a coffee machine
One of the most common mistakes is using too many pills in hopes of getting better results. Excess chemicals do not speed up the process, but only place excessive stress on the filtration system and require much longer flushing. Follow the manufacturer's instructions regarding dosage: usually one tablet is enough for one group cleaning procedure.
Another critical mistake is neglecting to replace the group gasket after several dry cleaning cycles. An aggressive environment softens the rubber, and if the gasket is old, it may begin to leak water under pressure or crumble. Always check the condition cuffs after using strong alkaline solutions.
Some users try to clean the coffee machine with vinegar or citric acid, confusing decalcification with removing oils. Acids are effective against scale (calcium), but absolutely useless against fatty deposits. Moreover, acids can damage the brass elements of the boiler if the concentration is too high.
⚠️ Attention: Never use oil remover tablets in automatic coffee machines with a built-in coffee grinder, unless the instructions explicitly indicate that the water tank and brewing unit are designed for dry cleaning in this way. The penetration of aggressive chemicals into the grinding mechanism will lead to its irreversible damage.
Frequency of procedure and signs of contamination
The frequency of cleaning depends on the intensity of use of the coffee machine. For home use, when 2-4 cups are prepared per day, it is enough to carry out the procedure once every 1-2 months. In high-traffic office settings or coffee shops, cleaning is performed daily or even several times a day using automatic cycles.
There are clear signs that your coffee machine requires immediate attention. First of all, this is a change in the taste of espresso: the appearance of bitterness, a metallic taste or the smell of old oil. It is also worth paying attention to the color of the cream: it becomes dark, uneven and settles quickly.
A visual inspection will also tell a lot to an experienced user. Remove the shower head and look at the back of it: the presence of a black, sticky substance indicates that the system is dirty. If you see black flakes floating when you spill water without coffee, you need to clean it immediately.
Keep a maintenance log for your coffee machine, recording the dates when you cleaned and replaced the filters. This will help you track the resource of your equipment and order consumables on time.
⚠️ Attention: If after cleaning the taste of the coffee does not improve and the pressure remains low, the problem may be wear on the pump or a malcalibration of the PID controller, which requires contacting a service center.
Waste disposal and safety precautions
Although modern cleaning products are marketed as safe, they are still concentrated chemicals. The solution remaining after cleaning should not be poured into the sink without first neutralizing it, especially if you have a septic tank or local treatment facilities installed. It is best to dilute the waste liquid with plenty of water before draining.
When working with tablets, avoid contact of the powder or concentrated solution with the skin and mucous membranes. In case of contact with eyes, rinse immediately with plenty of running water. Keep the tablet pack in a dry place out of the reach of children and pets, as bright packaging may attract their attention.
Empty tablet containers should be disposed of according to plastic or aluminum recycling regulations in your area. Compliance with safety measures and the correct use of cleaning products guarantees not only the long life of your coffee machine, but also the health of all family members.
Can tablets be used to clean capsule coffee machines?
The use of tablets for carob machines in capsule systems (Nespresso, Krups, etc.) is only possible if the manufacturer explicitly allows this in the instructions. Usually there are special liquid products or smaller tablets for capsule machines because their hydraulic system has a smaller volume and a different design. Using standard tablets may cause the capsule piercing needles to become clogged.
What should I do if I notice a chemical taste in my coffee after cleaning?
A chemical taste indicates that the system has not been flushed sufficiently. It is necessary to carry out another 2-3 cycles of pouring clean water (100-150 ml each). If the taste persists, part of the tablet may be stuck in the valves. In this case, it is recommended to take a break for a day to allow the residue to evaporate and repeat the washing. If the problem persists, the contamination may have been too severe and a repeat cleaning procedure is required.
How to store the remaining tablets?
The tablets are hygroscopic, that is, they actively absorb moisture from the air. After opening the blister or jar, store it in tightly closed original packaging or an airtight container. The ideal place is a dry kitchen shelf away from the stove and sink. If the tablet has crumbled or become sticky, its effectiveness is reduced, but it can be used by increasing the exposure time.