Dolce coffee maker thick faults DIY repair

A capsule coffee machine in a home kitchen has not surprised anyone for a long time. This compact, powerful device can delight us every day with fresh espresso or a soft tonic lungo, and it becomes very disappointing if one day it stops functioning: it does not turn on, does not respond to button presses, or pours dry coffee instead of an aromatic drink into the cup. However, even if the capsule coffee machine does not draw water, do not rush to look for a replacement. It might just be a matter of cleaning it up.

Design and diagnostics

Before you start repairing a device, you need to determine what exactly is broken in it. This will help significantly speed up and simplify the repair process. There are two types of coffee machines:

Their main difference is the operating pressure. In drip coffee makers (Bosch, Zelmer, Vitek), hot water drips through a coffee filter, through which it passes into the cup as an aromatic drink. In espresso, a stream of boiling water is poured into the cup, passing through a coffee tablet (pressed ground natural coffee). The advantage of using espresso coffee makers Electrolux, Binatone, Braun, Philips (Philips) and many others is that they can work without a filter.

Photo - espresso

Capsule coffee machines for brewing coffee have a special container into which ground natural powder is poured. This allows you to brew a drink with or without pressure. The key difference between these functions is that professional carob coffee makers can make coffee with foam.

Photo — kapelnaya

The main problems of coffee machines and coffee makers of household and professional types:

1. The water stopped flowing. Most likely, one of the water supply pipes is simply clogged;
2. The coffee began to give off a strange smell or taste. In this case, it is not always necessary to independently repair coffee makers; perhaps you simply changed the coffee tablets (they come in Dolce Gusto - Dolce Gusto, Nestlé, Jacobs, etc.). Another reason could be a clogged filter or cheap material for the device. If the optimal water temperature for brewing coffee is 95 degrees, then the internal parts heat up to 125 and higher. As a result, cheap plastic may begin to melt, transferring its flavor to the drink;
3. Cold coffee. The heating element stopped working;
4. Incorrect water dosage (common with capsule coffee makers). The breakdown may lie either in the engine or in the timer operating circuit;
5. The coffee maker does not turn on. There may be several reasons: engine failure, pump failure, problems with the power cord;
6. You cannot adjust the brewing or cup filling time. Depending on the type of coffee maker, this may be a breakdown of the time relay, control circuit, motor (or one of its compartments).

It is worth noting that after the intervention, warranty repairs will no longer be provided, so if you are not confident in your abilities, it is better to contact a company service center.

Photo - schematic diagram

How to get rid of scale?

If water does not flow from the coffee machine group, then this is a symbol that it is time to descale it. To do this, if the coffee maker does not have an automatic cleaning function, you need to:

• purchase a special descaling agent from a Delonghi, Saeco, Krups or other coffee maker (see photo);
• according to the instructions, mix it with water and pour it into the water tank;

• open the boiling water tap and drain a little water from it;
• turn on the device and allow a small amount of solution to be prepared, which at this time will fill the entire system;
• turn off the device and let it stand for approximately 15 minutes;
• turn on the device again and expel the remaining liquid through the system;
• fill the water tank with clean water and wash the system;
• perform the previous step 2 more times.

After the work has been done, a Delonghi, Krups, Saeco, Bosch or Nescafe Dolce coffee maker thickly, depending on what you have at home, will make delicious coffee a little faster. The difference after the work will be visible immediately.

How to disassemble a coffee maker

In order to repair any coffee makers (Nespresso - Nespresso, Delonghi), you will need to first disassemble them. Step-by-step instructions on how to do this:

1. There are set screws on the back of the coffee machine. They need to be untwisted and put aside. They can be of several types: hidden, cross and cone-shaped (often found in Indesit). They are removed with a screwdriver, pliers or other suitable tools;
2. If the case is not removed after removing the screws, then it is secured with hidden locks. The latches are located at the bottom of the rear panel. They cannot be opened from the outside, so you will have to pry them off with a knife or screwdriver;
3. After removing the housing, you can begin repair work.

If the tube of DeLongy, Bork, Ariete or other coffee makers is clogged, then you need to use a long thin rubber hose to repair it. It runs along the duct and breaks through the blockage. Sometimes special brushes with a flexible stem are used for such purposes; they allow you to clean the tube and remove not only coffee, but also mineral deposits.

The main problems of coffee machines and coffee makers

1. The water supply is interrupted. There is a blockage in the mechanism pipeline;
2. The coffee has acquired an unusual smell or taste. In this case, you don’t always need to fix something yourself. Perhaps you just need to change the coffee tablets, and there is a very wide choice of them: Dolce Gusto - Dolce Gusto, Nestle, Jacobs, etc. Alternatively, the coffee machine filter may become clogged. Another factor affecting the taste and smell of coffee can be cheap plastic. During operation, some parts of the machine heat up to 130 degrees, which can cause the plastic to melt;
3. Cold coffee. Most likely, your heating element has stopped working;
4. The carob coffee maker does not work. This can be influenced by many factors: the motor is broken, the pump is not working, the power cable is broken;
5. The dosage of water has been exceeded (most often found in capsule coffee machines). Most likely, the breakdown lies in the engine or in the timer operating circuit.
6. The cooking time setting circuit does not work or the dosage per cup is incorrectly adjusted. Of course, you need to focus on the model of the device and its brand, but a common reason is the incorrect operation of the engine control circuit or one of its compartments.

Repair manual for capsule coffee machines

To enjoy hot and aromatic coffee every morning, you will definitely need a good, high-quality coffee machine. The process of brewing coffee using capsule coffee machines is practically completely automated and does not require many actions from you. Like any equipment, a capsule coffee machine may require replacement or repair of mechanical parts or electronic circuits. The best option to restore functionality to coffee machines such as Nespresso, Delongi, Krups is to carry out the repair yourself.

How to disassemble a coffee machine?

To repair a coffee machine, you first need to disassemble it. And how to do this correctly is described step by step below.

1. You need to find the back wall of the device, or rather the installation screws. Unscrew it with a screwdriver, pliers or whatever is at hand and is ideal for such work, set aside. It is worth noting that there may be several screw options. They can be hidden, cross-shaped or with a convex head;
2. The screws have been removed, it is logical that the cover should be easily removed. However, if you cannot remove it, then there are hidden locks in the case. Most often these are ordinary plastic latches and they are located at the bottom of the back cover. From the outside, such a lock can be easily opened with a knife or a small screwdriver;
3. Finally, we have access to the “insides” of the machine, it’s time to start repairs.

And so let's go in order. There is a blockage in the water supply pipe. For coffee machines such as DeLongy, Bork, Ariete and others, cleaning is done using a long and thin rubber hose. It must be run along the duct and thereby break through the blockage. However, it will be much more effective to use special brushes with a flexible stem.

It is a little more difficult to clean the filter yourself. With frequent use of the coffee machine, the filter accumulates: scale, coffee residues, salt plugs, etc. Cleaning must be approached carefully, but the most important thing is to do it according to the instructions, otherwise you may damage the integrity of the part. During the process, it is allowed to use a soft swab sprinkled with alcohol. After cleaning, rinse the filter thoroughly.

Coffee machines from Mulinex, Krups, Roventa, Saeko have another problem - water leaks. In them, the valve regulating the water supply is located almost in the filter. If the coffee does not stop pouring, a worn valve is most likely to blame, which leads to this phenomenon.

The valve cannot be repaired; in this case, only replacement with another new part is available. To understand whether the valve is broken, just pour the coffee out of the machine, disassemble it, wash it and carefully inspect the possible breakdown.

Coffee maker won't turn on

1. Initially, it is worth checking whether everything is in order with the food. See if the cable is broken, check the grounding.
2. It also happens that household coffee machines produced in the Middle Kingdom simply lose contacts (they come off). Such cases also occurred with more famous brands: zauber, melitta, trevi. It is enough to check all the wire connections with the control circuit.
3. A common case with Senseo¸Siemens and Ufesa machines is that they have low-quality thermostats built into them. To diagnose it, you need to remove one wire from its end and “ring” the contacts with a tester. If all is well, the circuit will be closed.
4. The heating element may also fail. Diagnostics is carried out similarly to a thermostat. Replacing it with a new one is difficult; it will be easier to try to repair or buy a new coffee machine.
5. Very often, on the shelves next to the coffee machine, all the necessary accessories that you will certainly need for the correct operation of the device are sold. And to clean parts, technicians are advised to buy special flexible brushes.

Breakdown of the electrical inside of the coffee machine

No matter what modern coffee equipment is, these are clever devices that perform a wide range of functions. The more a device can do, the more perfect its control board is. This is one of the most expensive components, the repair of which will cost a pretty penny.

Breakdown of the button board

This thing is responsible for correct operation and switching of functions. A malfunction can directly affect the temperature of the finished drink. The board consists of many microcircuits and wiring that can burn out, become clogged, or fail. The solution is to completely replace the part.

Thermal sensor failure

The temperature sensor monitors the temperature of the water in the boiler, brewing unit, etc. Without this little thing, you won’t be able to make a good, reliable drink. 2nd point – operating the coffee machine becomes dangerous. This is why timely repair is so important. After diagnosis, the sensor is changed to a new one.

Temperature controller failure

A controller, or PID controller as it is commonly called, is a device that provides the highest level of temperature stability. In fact, this is a more modern temperature sensor. This thing evaluates the configuration of temperature characteristics in an unchanged mode and controls the heaters depending on the results of the evaluation. If a breakdown occurs, the coffee machine may lose its ability to heat. Repairs are carried out at the service center.

Most coffee machines have a ton of exciting technology built into them. Some of them are focused on achieving a certain water temperature and maintaining it at many stages of making the drink, which expands the ability to work with coffee to new heights. Such breakdowns are among the most annoying and costly; to quickly restore the equipment’s performance, I advise you to contact a service center.

Coffee machine KRUPS KP 150910 NESCAFE® Dolce Gusto GENIO - review.

Capsule coffee makers: operating principle

The principle of operation and repair of capsule coffee machines is slightly different from drip coffee machines. A small container with coffee powder is attached inside the machine, and the piercing mechanism is clamped manually. After use, the capsule is disposed of. There are most often no temperature sensors inside such devices, but a regular pump that operates on a timer. The water supply rate is calculated in advance. If water is supplied at the wrong dosage, the timing of the supply may be broken.

Repair of coffee makers often does not depend on the brand or model; in general, they differ only in nuances. This could be the shape, as well as the location of parts, size, or different types of sensors. The very principle of operation of the coffee machine does not change.

Any professional inspection for damage always starts with the cord. It makes no difference whether it is repairing capsule or drip coffee machines. Then the power board is checked (if there is one); it is worth noting that the coffee machine has a lot of filters, diode bridges, and also transistors. This all needs to be inspected for burnout. This is the only way to recognize the true cause of equipment malfunction.

Safety precautions

There are a few simple safety rules when using a drip coffee maker:

• Do not use the device with a faulty power cord or connect it to an emergency outlet.
• To avoid electric shock if water leaks, turn off the power to the coffee maker immediately.
• A device that is flooded with water must be dried before use.

After self-repair, before operation, it is recommended to connect the coffee maker through a residual current device - RCD. If it works, it is better to entrust the troubleshooting to a qualified technician.

Causes of breakdowns

Despite the fact that Nespresso, Delonghi, Krups, Dolce capsule coffee machines have a high degree of wear and tear, they may still require repairs. The main causes of malfunctions are:

• Poor water quality.
• Voltage fluctuations.
• The appearance of scale.

Nespresso Essenza coffee machine

Types of breakdowns

Malfunctions that occur when using capsule coffee machines Nespresso, Delongi, Krups can be divided into two main types:

• Problems that can be repaired with your own hands without the use of special tools and devices.
• Problems that need to be repaired by a specialist.

Important: do not attempt to carry out repairs on your own related to replacing wires, water supply or heating systems. This can cause harm to your health and increase the cost of restoring the coffee machine.

The water has stopped flowing or is flowing very weakly

If, while making coffee, the pressure of the stream from the horn decreases or hissing occurs, this may be a consequence of scale formation. This problem is not critical and can be fixed independently. To fix this you will need a thin wire or needle. Clean the diffuser hole (the part from which water enters the capsule). To prevent this problem from recurring, use distilled water.

Repair workshop

Water leaking from under the horn

This leakage is possible in the place where the connecting seal is located. The most common cause of clogging of the seal in Nespresso, Delonghi, Krups, Dolce capsule coffee machines is

1. Coffee particles.
2. Fat deposits.
3. Foreign objects.

To resolve the problem, remove the seal. It can be removed easily, without any pressure; just carefully remove the seal using a screwdriver or a mild knife. Depending on the brand of capsule coffee machine (Nespresso, Delonghi, Krups, Dolce Gusto), the seal may be protected by a mesh, which also needs to be unscrewed. To remove various particles and foreign deposits, use special detergents. If the mesh or the seal itself is damaged, they cannot be repaired and must be replaced with new ones.

Nespresso Inissia coffee machine

What to do if the water supply to the coffee machine does not work?

Perform manufacturer's recommended maintenance. Next, inspect all connections. If the equipment is connected to the water supply, make sure that the lines are not blocked; there is water in other appliances and plumbing in the house.

If you cannot fix the problem yourself when the device does not pump water, use. You can call an engineer at your home or office by phone from 7 a.m. to 11 p.m. on a day of the week convenient for you. If necessary, place an order for a call back. We work with famous brands, including Nespresso, Delonghi, Krups, Dolce Gusto. An official guarantee is issued for the services. You are personally present during the repair, you can verify the malfunction of specific components and parts.