Repair of Bosch food processors - causes of breakdown and main points of repair

Kitchen equipment is now in every home, some people only use a mixer and a toaster, but most housewives have modern food processors that perform all functions at once. They are able to speed up a number of complex and labor-intensive processes, perform a variety of cutting and grinding, and easily mix a cocktail or knead dough.

Thanks to such food processors, there is no need to buy a dozen different devices in order to completely cover all your cooking needs. But one device has one motor, although some Bosch models have two. This means that the breakdown of this part can lead to complete paralysis of all work in the kitchen.

Bosch food processor repair - we identify possible problems and fix them

Causes of food processor malfunctions

This type of equipment has a lot of components and it is quite difficult to determine exactly what is broken. First of all, if the unit is under warranty, under no circumstances should you disassemble it yourself, so as not to violate the terms of the service agreement (see also the article Professional kitchen equipment - a fantasy that is always with us).

It’s worth washing it thoroughly, collecting all the documents that came with it and taking it to the nearest branded service center.

Advice: if the owner does not know where to take the broken unit, it is worth carefully studying the warranty card. It must have the phone number and address of the repair center.

However, there are cases when the combine breaks down after the end of the warranty period; in such a situation there are two logical solutions:

• take it to a repair shop;
• try to eliminate the causes of the malfunction yourself.

Parts for Bosch

Frequent problems with Bosch equipment

To find out the cause of equipment failure, you need to carefully disassemble the case and inspect all internal parts. Perhaps the problem is in one of the plastic parts, which is easy to change with your own hands.

You can purchase individual spare parts in a specialized store or in repair shops where used combine harvesters are dismantled. The main advantage of self-replacement is the low cost of repairs.

The most common breakdowns include:

• burnt out engine - the device will not work at all;
• problems with engine parts or a special control board - the combine makes unusual noise, smells of burnt wiring, or turns off from time to time;
• Some attachment or lid lock may break.

After disassembling the case, you need to set aside all the parts that look faulty. Burnt and broken elements must be replaced with new, original or similar ones.

If the fault relates to the electronics section, for example, the control board is not functioning, it also needs to be changed. But without special equipment and knowledge, this will be quite difficult to implement.

Harvester disassembly diagram

1. Disconnect the device from the network. If the detailed instructions are not lost, we check the list of parts and check them sequentially.
2. We check the drive shaft, gearbox and electric drive.
3. Then comes the turn of the juicer, the main mixer disc and all the attachments.
4. We check the remaining parts - gears, containers, switches and brushes.

It is possible to repair a Bosch food processor yourself

Main causes of problems

Combines are divided into several types:

• mini;
• compact;
• multifunctional.

The last type of combines are those in which, for example, there is a combination of a meat grinder and a juicer. However, despite their different functional features, they all have the same operating principle.

After loading the products into the working chamber of the combine, they are brought to the desired state according to a given program. Processes can change by replacing attachments on them and giving the device the necessary commands. The nozzles are driven by an electric motor. Understanding that your food processor requires urgent attention is quite simple:

• new sound effects that the device has not previously produced, for example, squeaks, knocks, rattles and others like them;
• you feel an unpleasant smell of burning wiring coming from the machine;
• cracks and chips have formed on the nozzles;
• the unit begins to work at an uneven pace, or it does not work in the correct mode according to the given program;
• the device does not want to activate and start working.

As for the torque transmission part, some combines use a belt drive to transmit torque to the main working parts. When the device begins to work poorly, it may be time to replace the worn belt. There is also a keyed transmission of torque forces; in this case, the key may wear out, which will also lead to the inoperability of the combine.

There are many variants of combine harvester malfunctions; perhaps some of its internal elements may fail; if one part fails, the entire mechanism may break. There are also cases when problems arise in the wiring of the unit itself, when a short circuit occurs.

If the problem is in the brush

Replacing the entire motor at once can be very expensive, the price for such a service is quite high, and it can be difficult to purchase the part itself in small towns. On the other hand, if during disassembly it turns out that it is not the winding or control board that is faulty, but an ordinary brush, the cost of such repairs will be a pittance.

Most often, a malfunction of the brush is expressed in abrasion, after which it no longer presses tightly against the rotor winding, which is why the plastic can become very hot and can smell burnt when starting the combine.

Attention: the brush is a part made of graphite and transmits current to a rotating shaft located in the rotor. Since graphite is quite soft, it can quickly wear down with regular use of equipment, so it must be replaced periodically.

The dimensions of this part are about 2x1x0.7 cm, they may vary depending on the model.

Motor brushes

How to replace the brush

1. In a specialized store, repair shop, or on the market, we purchase a new brush for Bosch. You can go to a car store where you need to buy, for example, an inexpensive Zhiguli brush. It has a pressed-in conductor made of copper and will last much longer than a simple graphite one, but it will have to be “adjusted” using a needle file.
2. We insert the modified or branded part into its place: into a special rectangular hole, where the part is clamped with a metal bracket.
3. We assemble the housing and check the operation, first at low speeds, and then at full power.

Repair of Bosch food processors: necessary part - auger

The procedure for inspecting and repairing a combine harvester

It is necessary to inspect the product in order to find a failed part by following a certain sequence of actions. Electrical inspection is carried out as follows:

1. First of all, you need to assess the condition of the wire - make sure it is intact, there are no kinks, melting or other damage. To check that voltage is passing through the cord, you should use a special tester.
2. With a normal value of 230 V, the voltage difference at the input and output should be 230 V; to check, the input filter capacitor is rung.
3. When performing the test, you will need to bypass the protective relay, since the voltage supply is blocked by the switches. In the off state, the circuits are closed to achieve the voltage of the thyristor.
4. The rheostat forms a control circuit; one end is the phase and the other is ground. Next, remove the control potential from the control contact and measure the voltage between the ends. It is important to ensure that the control signal pickup is successful.
5. The steps described will make it possible to determine whether the wiring is working properly and whether there is any electrical damage. In conclusion, it is better to check the value of the motor control voltage while simultaneously tightening the rheostat. The amplitude must change.
6. If a motor breakdown is detected, you need to check the thermistors and ring the winding. You can start the engine directly from 230 V to evaluate its functionality - the device should work at maximum speed.
7. By turning the shaft manually, the commutator winding rings.

Healthy! A broken rheostat begins to crumble, the device does not work in all modes, and gear shifts are jerky.

Checking the belt shaft from the mechanical side looks like this:

1. Check to see if the belt is slipping.
2. Is the clutch OK?

If the belt is a part similar to a car belt, that is, not an ordinary rubber band, but a complex element with teeth the size of a gear, this indicates its durability. Replacing a dried out, frayed gum is quite problematic.

Other kitchen equipment breakdowns

Almost all breakdowns not related to the operation of the motor can be divided into two groups:

• a plastic part broke: lever, switch, latch;
• the knives became dull.

If replacing plastic elements is extremely clear - bought, installed, started, then sharpening the blades of combine knives with your own hands is a rather labor-intensive and demanding process (see also the article on Japanese kitchen knives).

There are three main methods for this procedure:

1. We take the device or just the knives to the nearest service center, where they sharpen them. The result will be guaranteed and quite inexpensive.
2. You can use an abrasive stone for turning. But you need to be careful, any wrong angle when pressing can break off a piece of the knife or make it even duller.
3. Craftsmen also use regular sandpaper, preferably size 5. But working with sandpaper is even more difficult than working with a sharpening stone. The result will be fast, cheap, but not always of high quality.

Photo of a working combine

Expert advice

Important! Equipment lives for a long time without problems and breakdowns only for those owners who properly care for its condition.

Here are some tips to extend the life of your food processor:

• Do not process overly chopped, hard or frozen meats, vegetables or fruits.
• If you notice any unusual noise or smell, turn off the equipment immediately to prevent serious damage.
• After use, be sure to rinse the parts thoroughly with warm water and dry thoroughly.
• Never use removable elements or attachments that are chipped or cracked.
• After the warranty period expires, annually inspect the internal parts and mechanisms, carrying out partial disassembly and inspection of the unit. It is better to replace worn parts in advance.

Now you know how to repair food processors.

Today, food processors from Bosch and many other manufacturers have become almost indispensable devices in the kitchen. There are various modifications of these units that allow you to perform various tasks without you making any special efforts. For some housewives they have become very important, and any breakdown in the system becomes a serious problem. In this article we will tell you about the structure of the device and how to repair food processors with your own hands.

Kitchen appliance care

To avoid having to urgently shell out a large amount of money to repair your equipment, you should take care of proper care in advance (see also the article on cleaning the kitchen).

There are several simple rules to extend the life of any kitchen appliance:

1. After each use, all parts should be washed with warm water, if necessary with detergent, and wiped dry. This will allow the knives not to become dull for a long time, and the plastic parts will shine like new.
2. The main compartment of the housing where the motor is located just needs to be wiped with a damp cloth to prevent water from getting inside.
3. Once a year, after the end of the warranty period, you need to disassemble the combine and check whether any parts have started to burn or whether the brush has worn out. If you change a “weak” part in advance, it will not cause damage to other elements. How to disassemble this or that model of combine can be seen in numerous videos on the Internet.

Tips on how to extend the life of a combine harvester

1. It is best to process finely chopped products, and you should not process frozen vegetables, meat and other things. It is also not recommended to crush solid ingredients;
2. As soon as you notice an unpleasant odor coming from the combine, turn it off immediately to avoid a short circuit and prevent breakdowns;
3. After you have finished work, you need to thoroughly rinse those elements of the combine that took part in processing the products. Before reuse, thoroughly dry all parts;
4. Never use attachments that have defects, as this may damage the combine itself;
5. After the warranty period has expired, it is best to regularly (at least once or twice a year) carry out preventive maintenance on the combine. Disassemble it and lubricate the necessary components of the mechanism, as well as replace worn parts of the device in advance if they are detected during disassembly, in order to avoid malfunctions in the future.

Design and types

To successfully use these devices in everyday life, it is enough to know the purpose of their main components. But for successful repairs, knowledge of the internal structure of the equipment and a diagram of the food processor, which is usually attached to the operating instructions for the equipment, will be useful.

All combines are divided into 3 main types:

• mini devices;
• compact products;
• multifunctional units.

The latter type includes devices that have a combination of a meat grinder and a juicer, but the operating principle of all types of combines is completely identical. For example, the Mulinex company produces compact combines with a nice design and easy disassembly for washing; they have an interface that is understandable for any housewife.

The main elements of any combine, regardless of the manufacturer, include:

• electric motor;
• special device for processing various food products;
• chambers designed to process various ingredients;
• set of attachments, discs and knives;
• main panel, with keys for controlling processes;
• electrical wiring to connect all elements.

For example, the Mriya 2M food processor is made of materials that are used in the construction of domestic rockets, which indicates the high quality and durability of such a product.

Food processor Mriya 2M

The combine is faulty - what to do?

Any owners will sooner or later have to repair their food processor themselves. Before you disassemble your food processor, check to see if it is still under warranty after purchase. If there is one, then it is best to take the unit to a service center so that they can provide the necessary maintenance and return the combine to its functionality.

But as happens in most cases, breakdowns occur after the end of the warranty period; here it’s worth trying to disassemble and repair the Bosch food processor before going and sending it in for repair, where they will charge you a lot of money for repairs.

First of all, we disassemble the food processor, but remember well where you removed it and unscrewed it from, since you will have to put the unit back together. All actions boil down to the following:

• turn off the device from the power supply and remove all removable parts;
• remove the combine itself and make sure the integrity of the belt and drive gears;
• remove the above elements and remove the engine. Inspect it for integrity and performance;
• Remove the protective cover from the gearbox and check the drive shaft for signs of defects.

If you have a different model, you can easily find videos and detailed instructions on the Internet.

When you are going to buy a replacement for a part, be sure to take the original ones, since third-party ones simply will not be able to easily fit into the groove. You can purchase such items at special service centers, or order them online.