In detail: do-it-yourself repair of a zelmer coffee machine from a real master for the site my.housecope.com.
Today our Zelmer Supremo coffee machine broke down. The essence of the breakdown is as follows - after pressing the manual coffee button (manual button), the machine works for a few seconds. Then it is simply cut down, all the buttons start blinking, and the machine itself beeps.
Well, we need to disassemble it. Disassembly begins - removing all containers from the machine. Next, from the bottom, unscrew the 3 fixing screws that secure the small cover. A water flow sensor or, as it is called, a fluometer is installed under this cover. It is these typical breakdowns that indicate that this unit is not working properly. A Hall sensor is attached to the flow meter.
The next step is to unscrew the water flow sensor, carefully remove the tubes. They are very difficult to film. Do not confuse which tube is attached to which connector.
After dismantling the pipes, you need to blow through the water flow sensor - this can be done, for example, with a pear. First, we blow it with air, then with water. Using the same pear.
If everything is ok with the impeller inside the flow meter, the hall sensor is in working order, then such a repair should be enough. We check - carefully fasten the tubes in place and turn on the machine. If it does not help, you will have to look further. Remove the flow meter again and disassemble it.
The lid is fastened with latches - and in order not to break them - you need to carefully slip hard thin plates under these latches and only then the lid will snap off.
An impeller is located under the cover. On which there is a magnet. On another part of the flow meter, you can see the Hall sensor, in which, most likely, the cause of the malfunction lies.
Video (click to play).
To pull out the sensor, you must use a hair dryer - it is glued to the body of the flow meter. Next, you need to inspect the sensor. Clean off glue residues and re-solder contacts. If it does not help, you need to change the Hall sensor.
Re-mounting the sensor must be done with hot melt glue. There are many options here and they all depend on how you succeed. You may even have to cut off a part of the case and then fill the space with hot melt glue and check how successful the repair was.
Functionality check is carried out using a tester and a magnet. We connect the tester to the red and yellow wires on the terminal block and turn on the machine. In a state of calm, it reads about 0.5 volts. When the magnet is brought up, it resets the voltage to 0. Next, we mount the impeller in place and turn it, observing how the voltage changes. If a reset to 0 occurs, go to the reverse installation of the entire flowmeter and put it in place, remembering that you need not to confuse which tube to connect to.
We close the cover and mount the screws in place. After such a repair, your coffee machine is back in service.
Any electrical device can fail over time. Repairing coffee makers from Delonghi, Saeco or Krups is quite easy to do with your own hands. These kitchen appliances are considered one of the easiest to repair and operate.
Before you start repairing the device, you need to determine what exactly broke in it. This will greatly speed up and simplify the repair process. There are two types of coffee machines:
Their main difference is the working pressure. In drip coffee makers (Bosch - Bosch, Zelmer - Zelmer, Vitek - Vitek) hot water drips through the coffee filter, through which it passes into the cup, already being a fragrant drink. In an espresso, a stream of boiling water is poured into the cup, passing through a coffee tablet (compressed ground natural coffee). The advantage of using espresso machines - 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 brewing a drink with or without pressure. The key difference between these functions is that with professional espresso machines, you can make a frothy coffee.
Photo - kapelnaya
Main problems coffee machines and coffee makers of domestic and professional type:
The water stopped flowing. Most likely, one of the pipes supplying water was simply clogged;
The coffee began to give off a strange smell or taste. In this case, it is not always necessary to repair the coffee makers yourself, perhaps you just changed the coffee tablets (they are Dolce Gusto - Dolce Gusto, Nestlé, Jacobs, etc.). Another reason can be a clogged filter or cheap material for the device. If the optimum water temperature for brewing coffee is 95 degrees, then the internal parts are heated to 125 and above. As a result, the cheap plastic can start to melt, imparting its taste to the drink;
Cold coffee. The heating element stopped working;
Incorrect dosage of water (found in capsule coffee makers). A breakdown can occur both in the engine and in the timer circuit;
The espresso machine does not turn on. There may be several reasons: breakdown of the engine, pump, problems with the power cord;
You cannot set the brewing or filling time of the cup. Depending on the type of coffee maker, this may be a breakdown of the time relay, control circuit, engine (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 the branded service center.
Photo - schematic diagram
In order to repair any coffee makers (Nespresso - Nespresso, Delongy), you will need to disassemble them first. Step-by-step instructions on how to do this:
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, cruciform and cone-shaped (often found in Indesite). They are removed with a screwdriver, pliers or other suitable tools;
If, after removing the screws, the case is not retracted, 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 have to pry them with a knife or screwdriver;
After removing the case, you can start repair work.
If the pipe is clogged at Delongey, Bork - Bork, Ariete - Ariete or other coffee makers, then you need to use a long thin rubber hose for repairs. It starts up along the duct and breaks through the blockage. Sometimes for such purposes, special brushes with a flexible leg are used, they allow you to clean the pipe and remove not only coffee, but also mineral deposits.
Photo - construction
Cleaning the filter is a little more difficult. With frequent use, various debris accumulates on it: salt plugs, coffee dust, scale. It should be cleaned only according to the instructions, since otherwise, the integrity of the spare part may be damaged. In most cases, it is allowed to wipe it with a swab dipped in alcohol or other degreaser. Rinse the part thoroughly after rinsing.
Photo - filter
Also, problems can be associated with the filter if water leaks from the coffee maker. This is often found in machines manufactured by Moulinex, Krups, Rowenta, Saego. A special valve is installed near the filter, which, after turning off the timer, turns off the water supply. If after a certain time the drink has not stopped flowing, then the cause is a malfunction of this element. The valve may wear out after frequent use, or it may simply not be able to handle the accumulated amount of coffee. To check and fix the breakdown, you need to disassemble the coffee machine, pour the coffee out of it and inspect the valve. Please note that it cannot be repaired, so the part changes immediately.
Photo - disassembly
If the coffee maker Redmond, Spidem, Tefal, Siemens and others does not turn on, then urgent repair is required:
The first step is to check the power wire. It needs to be examined for an open circuit, and also to additionally check the grounding. It connects to the terminal block, so be careful when diagnosing;
Sometimes, household coffee machines made in China simply lose contacts. It also occurs in professional models (zauber, melitta, trevi). In this case, you need to check all the places where the wires are connected to the control circuit;
Many modern cars (Senseo¸Siemens, Ufesa) sin with a low-quality thermostat. To diagnose it, you need to remove one wire from its end and check the contacts with a tester. With a serviceable element, the circuit must be closed;
Also, the coffee maker may not turn on if the heating element needs repair. It is called in the same way as a thermostat. For many models (Jura Impressa, Miele, Gaggia, Butler) it is made in the form of a disk, so it will be rather difficult to change it, it is easier to try to repair a part or buy a new car;
There are also certain secrets to cleaning the engine. In the departments of caring products, special brushes are sold that will help clean different parts of the motor without damaging the fragile material. It should be noted that in AEG, Solis or Unit coffee makers, the motor has several compartments, each of which is cleaned separately.
Video: Delonghi Coffee Maker Repair
Very interesting to read:
Any electrical device can fail over time. Repairing coffee makers from Delonghi, Saeco or Krups is quite easy to do with your own hands. These kitchen appliances are considered one of the easiest to repair and operate.
Before you start repairing the device, you need to determine what exactly broke in it. This will greatly speed up and simplify the repair process. There are two types of coffee machines:
Their main difference is the working pressure. In drip coffee makers (Bosch - Bosch, Zelmer - Zelmer, Vitek - Vitek) hot water drips through the coffee filter, through which it passes into the cup, already being a fragrant drink. In an espresso, a stream of boiling water is poured into the cup, passing through a coffee tablet (compressed ground natural coffee). The advantage of using espresso machines - 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 brewing a drink with or without pressure. The key difference between these functions is that with professional espresso machines, you can make a frothy coffee.
Photo - kapelnaya
Main problems coffee machines and coffee makers of domestic and professional type:
The water stopped flowing. Most likely, one of the pipes supplying water was simply clogged;
The coffee began to give off a strange smell or taste. In this case, it is not always necessary to repair the coffee makers yourself, perhaps you just changed the coffee tablets (they are Dolce Gusto - Dolce Gusto, Nestlé, Jacobs, etc.). Another reason can be a clogged filter or cheap material for the device. If the optimum water temperature for brewing coffee is 95 degrees, then the internal parts are heated to 125 and above. As a result, the cheap plastic can start to melt, imparting its taste to the drink;
Cold coffee. The heating element stopped working;
Incorrect dosage of water (found in capsule coffee makers). A breakdown can occur both in the engine and in the timer circuit;
The espresso machine does not turn on. There may be several reasons: breakdown of the engine, pump, problems with the power cord;
You cannot set the brewing or filling time of the cup. Depending on the type of coffee maker, this may be a breakdown of the time relay, control circuit, engine (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 the branded service center.
Photo - schematic diagram
In order to repair any coffee makers (Nespresso - Nespresso, Delongy), you will need to disassemble them first. Step-by-step instructions on how to do this:
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, cruciform and cone-shaped (often found in Indesite). They are removed with a screwdriver, pliers or other suitable tools;
If, after removing the screws, the case is not retracted, 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 have to pry them with a knife or screwdriver;
After removing the case, you can start repair work.
If the pipe is clogged at Delongey, Bork - Bork, Ariete - Ariete or other coffee makers, then you need to use a long thin rubber hose for repairs. It starts up along the duct and breaks through the blockage. Sometimes for such purposes, special brushes with a flexible leg are used, they allow you to clean the pipe and remove not only coffee, but also mineral deposits.
Photo - construction
Cleaning the filter is a little more difficult. With frequent use, various debris accumulates on it: salt plugs, coffee dust, scale. It should be cleaned only according to the instructions, since otherwise, the integrity of the spare part may be damaged. In most cases, it is allowed to wipe it with a swab dipped in alcohol or other degreaser. Rinse the part thoroughly after rinsing.
Photo - filter
Also, problems can be associated with the filter if water leaks from the coffee maker. This is often found in machines manufactured by Moulinex, Krups, Rowenta, Saego. A special valve is installed near the filter, which, after turning off the timer, turns off the water supply. If after a certain time the drink has not stopped flowing, then the cause is a malfunction of this element. The valve may wear out after frequent use, or it may simply not be able to handle the accumulated amount of coffee. To check and fix the breakdown, you need to disassemble the coffee machine, pour the coffee out of it and inspect the valve. Please note that it cannot be repaired, so the part changes immediately.
Photo - disassembly
If the coffee maker Redmond, Spidem, Tefal, Siemens and others does not turn on, then urgent repair is required:
The first step is to check the power wire. It needs to be examined for an open circuit, and also to additionally check the grounding. It connects to the terminal block, so be careful when diagnosing;
Sometimes, household coffee machines made in China simply lose contacts. It also occurs in professional models (zauber, melitta, trevi). In this case, you need to check all the places where the wires are connected to the control circuit;
Many modern cars (Senseo¸Siemens, Ufesa) sin with a low-quality thermostat. To diagnose it, you need to remove one wire from its end and check the contacts with a tester. With a serviceable element, the circuit must be closed;
Also, the coffee maker may not turn on if the heating element needs repair. It is called in the same way as a thermostat. For many models (Jura Impressa, Miele, Gaggia, Butler) it is made in the form of a disk, so it will be rather difficult to change it, it is easier to try to repair a part or buy a new car;
There are also certain secrets to cleaning the engine. In the departments of caring products, special brushes are sold that will help clean different parts of the motor without damaging the fragile material. It should be noted that in AEG, Solis or Unit coffee makers, the motor has several compartments, each of which is cleaned separately.
