Kenwood 700w DIY repair

There are more and more various electronic assistants in our kitchen, and more and more they fail, especially if you save money and buy the cheapest ones. Of course, expensive blender models are not immune to burnout, but according to statistics, this happens less often. So, blender. It can be submersible manual or tabletop. The essence of this does not change much - in both cases we have a rotating attachment (knives, whisk), which is driven by an electric motor located in a molded plastic or metal body of the blender. Control ranges from simple on / off to multiple electronically controlled speeds. To visualize all this - take a look at the blender diagram:

1. Container jug
2. Latch
3. Cutter
4. Spindle
5. Drive shaft
6. Electric motor
7. Locking mechanism
8. Switch
9. Cord

The immersion blender is not too different, and as for the possible malfunctions, they are almost the same and boil down to a broken cord, burning contacts, burning an electronic speed controller or an electric motor.

Practice shows that it is the motor that is the weakest link. Typical case: blender Orion ORB-012 stopped spinning after they stubbornly tried to grind frozen berries, despite slipping and jamming. In very many models, the engine can fail if it runs for more than a certain period.

Disassembling this device is difficult for a layman, not everyone will guess that it is necessary to start with the speed regulator cap.

Video (click to play).

We pry it with a screwdriver and remove it from the rod, and under it are 4 screws that secure the top cover, which in turn closes the board with the details.

Next, you need to pull out the plastic sleeve near the attachment of the nozzle, which covers the electric motor. Only by pulling out the motor can you pull out the speed controller board after it.

A burnt out motor can be immediately understood by the strong smell of burning. Here, medicine is already powerless, there is no point in rewinding the windings, because it will cost more than buying a new blender.

If the motor is still alive, we look at the regulator. It is assembled according to the circuit of a triac phase regulator, which has approximately the following circuit:

As you can see from the diagram and from the photographs, there are two buttons on the body. One connects the motor immediately to maximum speed, supplying a large voltage, and the other turns on the motor through the speed regulator. There is a noise filter at the input of the 220v network, so that when the blender is on, you do not have interference on the radio and TV.

Pay attention to the fuse. If you're lucky, it will be burnt out, and the independent repair of the blender will successfully end there, to the thunderous applause of the mother or wife 🙂 If not, check the correct connection of the plug, the integrity of the cord, the contact of the buttons, the details of the circuit.

The blender is a motor with a special attachment on the shaft. This is a fairly simple device. To start working, a bowl with a knife is attached to the motor shaft. This makes it possible to disable the engine blocking. After the blender, you can work in a pulse or normal mode by pressing the power button. The household appliance is completed with a speed controller, cord, plug. A fuse may also be included.

Are you sure you can handle a DIY blender fix? In this article, we will show you how to disassemble a blender and how to become a near-professional blender repair master.Like most devices, the blender is easy enough to disassemble, the main thing is that there are no unnecessary parts left during assembly.

Today there are three types of blenders available:

1. Stationary
2. Submersible
3. As an option in a food processor.

In all kinds of blenders, the main component is an electric motor. But the principles of operation of a household appliance are somewhat different. Stationary blenders are almost identical in performance to food processors. They consist of two main components: an electric motor and a cookware with a knife placed inside it.

Let's look at the device and how the blender works. Food is placed in the blender bowl. The device turns on and its knife starts to rotate very quickly. The shape of the knife is designed to make the products move in a closed path. The knife of the device is located at the bottom of the bowl and mates with the rotor of the engine. High speed and the right shape allow you to quickly chop the food. The blender blade is shaped like a propeller. This allows him to draw in products for cutting, and at the same time throw the already chopped mass onto the walls of the bowl.

The blender bowl has a special shape that allows the movement of the processed products in a circle. The walls expand towards the top. In this regard, the resulting mass begins to fill the walls, freeing the center of the mold for not yet cut products. As soon as the number of processed products on the wall reaches a critical weight, they fall back onto the knife and further chopping takes place. In practice, all this happens in a matter of moments.

We have described the process that can be observed with quality equipment. Cheaper models may not cope with the task at hand. Lack of power does not allow creating a continuous flow of processed products and the knife begins to cut the air. If you decide to chop the cabbage, add a little water. This will help the knives handle this vegetable.

If the blender does not cope with chopping food, this does not mean that it is broken, it may simply not have enough power. Then add some liquid and try starting the blender again. If this does not help, then perhaps you should do the repair yourself:

1. sharpen or replace the knife;
2. test the speed switch;
3. make sure the engine is working properly;
4. check how the bowl connects to the knife.

If you decide to repair the blender with your own hands without involving professionals, then you should start by checking the speed regulator. It's simple. It is necessary to press successively different speeds and determine by ear whether the speed of the rotor is changing. If the speed changes, then the regulator is working, and it is worth checking the blender knife.

Unfortunately, not everyone can sharpen such a knife at home. Therefore, it is not worth experimenting; it is better to purchase a new cutting tool for the blender. In the store, you may encounter the following development of events:

• You have purchased a new blender knife. In this case, it is necessary to remove the old one and put a new knife in its place. You can disassemble the blender with your own hands, for this we disconnect the blender from the network, remove the bowl from it. We take a clean towel so as not to injure ourselves on the sharp edge and begin to unscrew the knife from the motor spindle. The threaded connection here is not standard, but left, so we unscrew it in the opposite direction. Sometimes the knife is connected with nuts. In this case, wrenches and pliers will come to your aid.
• There are models in which you need to disassemble the blender bowl to replace the knife. This is not a problem, but do not forget to replace the oil seal with a new one here.
• And finally, the most inconvenient option is when the bowl cannot be disassembled. In this case, you will have to purchase the entire block: a bowl and a knife.

Failure of the speed regulator of a hand blender is one of the most common occurrences.If so, then the blender is in danger of being disassembled. It is possible to fully check the performance of this unit only in a workshop where there is the necessary equipment. If you have the necessary knowledge in electrical engineering, then you can independently "ring" this part. You will be able to determine if the problem is here. The regulator is dispensed from the blender and is tested in all positions. For normal operation, in each position the regulator contacts are normally closed.

But before disassembling a household appliance, it is worth listening to whether the speed of rotation of the knife changes when switching speeds.

It should be remembered that in most models, the blender cannot be turned on if the bowl is not connected to it. This option is classic, because since the invention of the blender, its creator has emphasized that the equipment will not turn on if the bowl is not installed.

You decided to grind the minced meat, and the blender simply does not turn on! Don't panic right away! This trouble can be solved even easier than if the device worked, but did everything badly.

First, let's click on the button and listen. Is there a quiet hum? It means that the engine is running, but it cannot turn the knife. Disconnect the bowl and use your fingers or a small screwdriver to squeeze the button that blocks the inclusion of the blender. If everything starts working, then the defect has been identified.

If the device does not start even when the blocking is off, then the matter is in the engine, more precisely, in its windings. One or two of them burned down. In this case, the engine must be replaced. If you can manage to buy it at a reasonable price, then you are in luck. But most often its cost is comparable to the cost of a new, not expensive device, therefore it is not economically justified to repair such a blender. Easier to buy a new one!

If, when the button is pressed, you do not hear the operation of the engine, in order to make repairs, it is necessary to examine the power supply circuit:

If you decide to fix the blender yourself, here's the work order. If the device fails during the warranty period, the service center must repair it free of charge. It is better not to disassemble expensive blender models and try to repair it yourself, but you need to contact a specialized workshop. Today, the cost of an expensive blender can be considered 3000-3500 rubles.

A blender is a multifunctional home appliance that is found in almost every kitchen. This is a convenient device that can replace several devices at once. With its help, grind, mix, beat the products. The design of blenders is simple, so they are quite reliable, but even the most reliable technique fails. Consider how to disassemble a submersible and stationary blender, find the cause of the breakdown and do it yourself repairs.

All blenders can be divided into two types - stationary (tabletop) and submersible (hand-held). They differ in design and method of operation, may have different attachments and additional functions. To repair a stationary or hand blender, you need to understand the features of its device.

The hand-held models are long-handled electrical appliances with a cutting attachment. They are dipped into a bowl with products that need to be chopped and mixed, pressed on the start button and held until the procedure is over.

The undoubted advantages of submersible models include compactness. The devices are easy to disassemble for cleaning, plus they need a minimum of space to store them. Blenders with a large number of attachments are versatile and perform a variety of food preparation operations.

There is only one drawback of submersible structures, but it is significant. During cooking, you have to hold the device in your hand while pressing the start button. If you have to do this within 1-2 minutes, the hand gets tired, numb. Such a device is not suitable for frequent use, becausedoes not cope well with mixing large portions of food.

Making Soup with a Hand Blender

Stationary models resemble food processors in appearance and often perform many functions. They are bowls with rotating knives attached to the bottom. Such a device is installed on a table, you do not have to hold it with your hands while working. He is able to grind a large portion of food at a time, copes with mixing cocktails, liquid dough.

Desktop models also have drawbacks. The hostess has to allocate quite a lot of storage and installation space. In addition, some stationary blenders do not grind vegetables well: they either grind into crumbs or remain large chunks. The advantages of tabletop structures include the fact that they are sometimes easier to disassemble and repair with your own hands than submersible ones.

Although the principles of operation of submersible and stationary blenders are similar, there are still differences due to the different design of the devices. In all models, products are chopped with knives, but in tabletop appliances, the bowls also serve as an auxiliary function.

The knife of the stationary appliance, located at the bottom of the bowl, rotates and cuts the food. With an increase in speed, the crushed mass is mixed, rises up. The walls of the bowl expand upward, so small pieces slide along the walls, and large pieces fall into the center - to the knives. It turns out that the crosspiece pulls down the pieces of food and throws the already crushed mass to the walls of the bowl.

It is not uncommon for a blender to be considered broken if it does a poor job of chopping. But it happens that the problem is not in breakdowns, but in the low power of the electric motor. Sometimes it is enough to add a little liquid to the bowl to make the work of the knives easier.

If the model is powerful, then such deviations in operation can really indicate malfunctions, for example, a blunt knife, a broken speed switch, etc. In some cases, problems with the bowl may be the cause of poor performance.

Stationary model device

In submersible structures, collector-type electric motors and fuses are usually installed that turn off the device in case of overload. Frequent breakdown - burning of current-carrying parts, therefore, when a malfunction occurs, first of all, the contacts "ring out" by rotating the shaft by hand.

Care must be taken when using handheld devices: they are not suitable for kneading dough and other thick products. The motor may not be able to withstand the load. Repairs will be expensive. However, there is good news: often women's hands get tired of holding the equipment before the engine has time to overheat.

Many models are equipped with gear shifters. This is a very convenient feature that expands the capabilities of the hostess. But if the engine does not cope, then the working device can break out of the hands, which becomes the cause of mechanical failure.

Submersible model device

In submersible models, the power cable is often damaged. This is the flip side of the main advantage of such devices - mobility. The hand blender is often turned on and off, carried from place to place, which leads to kinks in the cord, incl. critical.

Unstable operation of the power grid is also a risk factor. During power surges, motors often burn, printed circuit boards are destroyed. Often it is necessary to replace the knife, repair the attachment, the speed regulator. In table-top appliances, liquid may leak into the nozzle drive, the bowl snap mechanism may break.

Hand blender repair

Consider how to check the performance of individual structural units:

• If the blender does not turn on, the first thing to check is the presence of current in the electrical outlet. Before disassembling the device for repair, you need to make sure that there are no power problems. The outlet is checked using a tester or by connecting to it another electrical appliance, which has an accurately working cord.

• If there is current, but the blender does not turn on, check the power cable and fuse.Repair in this case comes down to replacing faulty parts with new ones.

• Overloads can burn the motor. In addition to problems with performance, such a breakdown gives off a burning smell. Sometimes the device can be repaired by replacing the brushes on your own, but more often you have to give the blender to a service center for repair or buy a new one.

• When the elements of the printed circuit board burn out, a short circuit occurs. It is necessary to disassemble the equipment, inspect the board, test and, if necessary, re-solder the faulty elements.

• If the gasket leaks, then it must be replaced with a new one. liquid can get on the electric motor and cause more serious repairs.

Diagnostics of malfunctions of the submersible model

Housewives are often faced with a situation where the blender has stopped and the knife is not spinning. It happens that the knife is spinning, the motor and the speed switch are in good order, but when loading the products, the device works "idle" without grinding them. In many cases, repairs can be done by hand. Let's figure out how to do this.

Stationary blender device diagram

(KMU: make a screenshot of the 1st picture with the name of the parts)

Before disassembling the blender for repair, you should carefully read the technical documentation. Disassembly instructions may be supplied with Bosch, Philips, Scarlett, Polaris models. It is best to follow the manufacturer's recommendations. Otherwise, there is a great risk of permanently breaking the device.

For disassembly and repair, you will need the following tools:

• flat thin screwdriver (if such a screwdriver is not available, it can be replaced with a narrow knife);
• long screwdriver;
• pliers;
• a magnet to reach small parts if you cannot remove them with tools;
• superglue or any other reliable adhesive with which you can restore the integrity of the seams if they are damaged.

DIY blender disassembly procedure:

1. Remove all screws, remembering or noting where they are located.
2. Remove as many items as possible.

Note! Some craftsmen offer a more radical option for disassembly: a narrow screwdriver or knife is pushed between the body and the casing of the device and the weld is knocked down with an accurate hammer blow. This method is only suitable for non-collapsible models, and superglue is required to reassemble them after repair.

1. Parts that could not be removed must be carefully examined. They can be clipped. In this case, they can be removed by pressing the latches.
2. When the case is disassembled, you can start checking the performance of parts and repairing.

The most common models of Scarlett ("Scarlet"), Vitek ("Vitek"), Polaris ("Polaris"), Philips ("Philips"), Bosch ("Bosch") are usually disassembled, so they can be repaired by hand, replaced nozzles. Let's consider in what cases self-repair is possible.

1. Replacing the knife. If the knife is dull, it can only be replaced, because it cannot be sharpened. New knives are sold in specialized and hardware stores. To replace, remove the old part by wrapping a towel around it and unscrewing it. After that, insert a new knife (it may differ in appearance from the old one), secure.

Important! Sometimes you can buy a new knife complete with an oil seal. It makes sense to replace both parts at once. In some stationary models, the knife cannot be removed from the bowl, because it is not collapsible. Then there remains only the option of a complex replacement of the bowl, knife and gland.

Old and new knives

1. Speed ​​regulator. In stationary models, it may be difficult to check the switch, because the function of blocking switching on without a bowl is often provided. By the way, the problem of stopping the operation of the device is also associated with blocking. If you suspect a malfunction of the speed switch, it must be evaporated, each position must be checked in full, and repaired.

1. Stopping work. If the device does not turn on, the first thing to do is check and, if necessary, replace the cord.If it turns on and buzzes, but does not work, then disable the lock. Inoperability when the blocking is released most often indicates a burnout of the electric motor winding. It can be replaced, but this is an expensive repair, so more often than not it is more profitable to just buy a new blender.

Note! The problem might be with the circuit boards. Capacitors and resistors are worth inspecting. If a short circuit occurs, then it is better to give the device to specialists. In many cases, damaged electronics cannot be repaired or the cost is too high.