Do-it-yourself electric grinder repair

In detail: do-it-yourself electric grinder repair from a real master for the site my.housecope.com.

While scrolling the meat, a medium-sized bone accidentally fell into the meat grinder, after which it began to hum, but stopped rotating.

It is easy and simple to disassemble the meat grinder, for this in the lower part of the case you need to unscrew four screws with an ordinary Phillips screwdriver, after which it is very easy to remove the casing. After that, we remove the large gear by picking up and removing the split fixing washer in front of these.

When I examined the gear, I noticed that many of the plastic teeth were worn off. I had to change it, because I didn't want to pay 500 rubles for a new gear, I printed it on a 3D printer. Collected in reverse order, everything works

After they put crackers in the meat grinder, it began to crack and after a while stopped twisting, I had to carefully disassemble it in order to identify and eliminate the malfunction.

Disassembly is quite simple, first we remove the front gray panel of the latch from the bottom, then we unscrew the five screws and separate the halves. Now you can clearly see the motor and the gearbox housing

We unscrew the four self-tapping screws on the gearbox housing and open it. We see broken teeth at the largest gear. It was not possible to find them on sale.Therefore, they were borrowed from the VITEK meat grinder, although it was necessary to sharpen the hexagon axis a little and the auger seat.

The meat grinder seems to be working, but at the same time it makes extraneous noise and sometimes pops, there were no such sounds before.

In order to repair the meat grinder, you will need to determine the source of the problem and disassemble the electric meat grinder.First of all, we will unscrew the screws, which are marked with red arrows in the figures below.

Video (click to play).

Now we disconnect our disassembly object into two parts and see that it consists of two main units: a gearbox, in which plastic gears are installed, and an electric motor, thanks to which rotational movements are carried out.

Now you can disassemble the gearbox to check the gears and the engine.

After that, remove the gear cover. Plastic gears are installed each on its own rod. Remember the location of the gears, or better yet, take pictures of them if they differ from our image.

After dismantling the gears from the rods and inspecting them, I found fractures of plastic teeth on the smallest of them. The breakdown is unpleasant, because to repair the meat grinder, you will need to replace the gear, but it will not be so easy to find it, because you will either need to find exactly the same killed device, or order its manufacture from a familiar machine operator. You can also try to order different sets with similar elements from China, but it is not a fact that you will get there.

In many models, the coupling is a calculated weak link, which must break first when the mechanism is jammed, so that the gears of the reducer and the electric motor remain intact. This sleeve breaks off only when it is sufficiently hard to jam. Such protection is relevant for meat grinders of almost all firms in which the gears of the gearbox are made of plastic. If overloaded in some models, the gear teeth can be ripped off. This will lead to more expensive repairs. And in this case, you can do it yourself by changing the special bushing, which is usually in stock.

It's easy to guess: there is an electric motor inside the meat grinder, supplemented by a rotation speed control circuit. If we put aside the cases when it is necessary to replace the protective sleeve, coupling, repairing meat grinders with our own hands concerns the knowledge of the theory, the practice of the operation of AC motors.In electric motors, collector designs are more often used by consumer electronics; in industry, asynchronous ones dominate. Newbies will ask where the authors got their information from. We answer: according to the Ariston service department, since the 90s of the last century, collector motors have been replacing asynchronous motors in the household segment. Today, the percentage of the former reaches 85 of the total. On this bright note, let's start looking at AC electrical machines and control methods.

One often hears the statement: brushed motors work equally well on AC and DC. Let's say more: the alternating current loses part of its power, passing through the stator and rotor chokes, the inductance tries to delay the frequency. 50 Hz is a bit too much for a simple lacquered wire spool. Often, the stator windings are driven out individually, as they are. You can power one. Power suffers, losses are reduced, reaching a minimum size.

How easy it is to regulate an induction motor. Found two methods used by meat grinders:

Changing the amplitude of the supply voltage.
Commutation of windings.

It is clear that the first method requires the inclusion of additional elements in the circuit. I would like to notice about this! I happened to read on the forum about the domestic speed controller of an asynchronous motor, as if there were only resistors. The author hinted at the presence of a resistive voltage divider. But! When the active element operates in a linear mode - most regulators are built by thyristors - the resistance is far from infinity or short circuit. They put radiators, protecting the semiconductor keys, we will touch on the topic below. We would like to bring to the attention of the reader: there will always be losses.

A little blood is not enough. The grinder device contains a motor with two windings, a starting capacitor, the rotor is represented by a drum, we see a 100% asynchronous motor with a squirrel cage rotor. Let's meet a circuit with switching windings. As follows. One coil is wound around the periphery, connected through a capacitor, providing the desired phase shift. The second is wound at an angle of 45 degrees around the circumference, there is no phase shift. One is divided by two unequal windings. Each can be switched on separately, in parallel (together). Gives three speeds.

Let's add asynchronous motors to the theme. The manual for the repair of meat grinders will forget to mention a trifle: a thermal fuse designed for 135 degrees is often placed inside the windings. Foreign elements are often decorated with the letter F, the number has little to do with Fahrenheit. Unlike Elenberg transformers, where the braid honestly writes: there is a thermal fuse inside, asynchronous motors are often devoid of mention. Call the windings: one suffers a break, patiently inspect for different elements hidden between the wire. It can be difficult to do, believe me. The first glance shows only copper, the second - copper, the third - an element of protection is noticed.

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The thermal fuse is found, it should be evaporated, ringing. With a positive breakage test, get a new one, solder instead of the old one. Can you guess why you can't short-circuit? Right! The next time it is not the thermal fuse that burns out - the asynchronous motor, the hassle will increase. Similar radioelements are found in many products, there are no special requirements. Surely there is a suitable specimen at the flea market. Be careful not to tinker yourself. As is the case with the regulation of the speed of induction motors. The method of dividing the voltage by a thyristor is suitable; in practice, current cut-off is used.

The supply voltage is supplied bypassing the brushes in series on the rotor and stator. The direction of movement of the shaft is determined by the direction of the windings.
The current flows through a thyristor switch controlled by the sum of the voltages.

The source of the switching signal shaping determines the complexity of the circuit. Brush motors spark. When switching sections, a back-EMF occurs. Directed opposite to power supply. Apply feedback. Through a capacitor, the back-EMF diode is added to the thyristor control electrode. The more the amplitude, the less the gateway is open. The motor starts, or the load increases - the speed decreases. The amplitude of the self-EMF becomes less, the key current increases, and the engine returns to the mode. Needless to say, how important it is to keep the speed constant, the circuits solve this problem. It is clear that part of the power is lost on the key, the inevitable payment for stability. The speed can be adjusted separately via a variable resistor. Who is interested - you will find good options here

The meat grinder is open, we begin to inspect the engine. It is necessary to measure the resistive input resistance. If a capacitor is visible in the circuit, we define it as an open circuit, it is misinterpreted, considering it a breakdown. To repair the grinder yourself, check the proposed engine type. Traditionally collector, it is easy to recognize, thanks to the characteristic drum, broken by segments, two graphite brushes are diametrically adjacent. Asynchronous motors are sold with squirrel-cage, phase-rotor options. In the first case, the rotating part is devoid of electrical contact with the stator, the power source, in the second, there is a pair of rings supplying current to the rotor windings.

The difference between an induction motor with a phase rotor - the shaft is devoid of a segmented drum, there is no pair of brushes. Repair of electric grinders is carried out according to the type of engines. The asynchronous entry is ringing anyway. The collector engine is not enough.

We will ring the section, rotate the shaft, measuring the resistance of each step. The values must be equal. The process stops - the turnover is completed. In collector motors, the stator is often made on a single coil. It is connected to the rotor by a magnetic circuit, represented by a core with wire turns. Do-it-yourself meat grinder repair will be a freebie. Even if the wire is burnt in the center, always buy a roll of a new one with lacquered insulation in the store, wind the required volume with your own hands.

They use a device formed by two pairs of racks mounted vis-a-vis on a long board. Each has a rotating axle. One holds a new spool, the other holds a coil of wire. Here you wind up the old choke to localize the break, how many turns to wind, what is the length of the wire. Most people use a handle, like an old barrel organ, it is allowed to use a screwdriver drive, a drill. Determine the speed so that it is convenient to lay the turns tightly. With the shuttle, the other hand guides the wire from side to side, from edge to edge of the spool. In conclusion, we will ring the coil and measure the electrical resistance.

Repair of induction motors is determined by the design. The stator is repairable. The configuration of the rotor windings is complex (if any). However, if there is a lot of strength, time, desire to practice, it is impossible to stop the master. Let the day be spent, the engine again works as part of the meat grinder.

Winding direction.

Number of turns.

Location of terminals.

Three whales will help to correctly position the wire, it is allowed to combine it with neighboring coils, enlisting the help of soldering, applying insulation at the place of electrical connection. The main reasons for the breakdown of meat grinders are the consequences of improper operation. More often, there are two gross violations on the part of users of household appliances:

Exceeding the permissible time of continuous work, underestimating the duration of rest. The parameters are not advertised by manufacturers, not all meat grinders contain protection against overheating. Users are deprived of information about the features. Housewives are losing blenders. The motor breaks easily.

The second oversight is getting hard bones under the auger. Repair of the Zelmer meat grinder consists in replacing the protective sleeve. Sometimes you have to buy a set of spare parts.

Capacitors burn, swell (electrolytic on filters). Call, conduct a visual check: one side sticks out. The butt is pressed through with a cruciform recess. Bends outward. Burnt capacitor - consider a favorable outcome. Happy repair to everyone!You can download movies, clips, episodes, trailers for free, and you do not need to visit the Youtube site itself.Download and watch an ocean of endless video in high quality. Everything is free and without registration!The electric assistant today is very popular and in high demand among Russian buyers. Despite high-quality manufacturing and high reliability in operation, electrical appliances tend to break down over time. Many breakdowns can be repaired at home, so we will tell you in detail about the repair of an electric meat grinder, which you can easily do with your own hands.

It doesn't matter what kind of meat grinder you have - Kenwood, Zelmer or Moulinex, each of them has its own nuances, but the faults are pretty typical for all. Electric meat grinder repair specialists have compiled the following register of the main problems encountered in these products:

violation of various contacts of the electrical circuit;

deformation of the engine rotor;

breakage of the teeth of the gears of the reducer - arises from the increased load;

malfunctions of the electric motor, extreme wear of the brushes;

wear of the cutting tool due to the processing of too stringy meat, the ingress of small bones due to the user's oversight;

breakage of keys, safety devices;

damage to insulation, power cord;

replacing the motor or rewinding its windings.

Many failures of reliable technology are due to violations of operating conditions and only a few - a factory defect or a human factor during assembly.If any malfunction occurs, it is necessary to immediately carry out diagnostics in order to find out the cause and localize the breakdown. Inspection of the mechanical part of the product is carried out visually, and the electrical circuits are checked with special devices. If a visual inspection of all parts of the mechanical part did not give a positive result, then you need to dismantle the product and inspect the gearbox, electric motor. May have happened clogged lubricant rubbing parts, the bearings do not work correctly, they need to be replaced.Timely diagnostics allows you to identify and eliminate malfunctions at an early stage of their development, which significantly extends the life of the entire product.Let's consider in detail the malfunctions of the meat grinder and methods of their correction.

The engine does not reach the set speed - the reason may be broken switch or the engine itself. Replace worn mechanisms or an electric motor.

Interruptions observed in the drive - extreme wear of graphite brushes, you need to install new ones.

Image - Do-it-yourself electric grinder repair

Extraneous sounds, burning smell during product operation - defective engine... To restore it, you need diagnostics, repair or complete replacement. However, the cost of replacing the engine is quite high - it would be more cost effective to purchase a new grinder and solve the problem.

The reason for the appearance of sounds unusual for the normal operation of the meat grinder may be bearingsthat wear out during operation. To confirm the diagnosis, it is necessary to disassemble the main body of the product, get to the place of their installation and check the rotation, if necessary, replace it.

Reducing the speed of the electric motor - overload, the food is fed too fast, the meat grinder does not have time to grind them. The Kenwood mg model is particularly susceptible to this malfunction. Reduce the feed dosage and everything is normalized.

No shaft rotation - the transmission mechanism of the reducer is seized... Perhaps one of the gears or its teeth is broken and needs to be replaced.

The product auger has stopped. If at the same time the engine is operating in the same mode, then turn off the meat grinder and dismantle its mechanical part in order to find out the reason.

In the latter case, there are several reasons for the occurrence of such an unusual failure: incorrect assembly of the gearbox, cranking of the motor shaft, breakage of the drive gear teeth, and very rarely licking of the connection by the auger shaft (erasure of the hexagon).

On a note! The non-conformity of the metal of the part leads to its breakage during the ultimate load.

If the hexagonal receiver, where the auger shaft is inserted, is made by mistake of a softer metal, then during operation it quickly expands, or its edges wear off, the tight contact will be broken... The same can happen with the auger tip. It is difficult to repair a meat grinder with such problems with your own hands; the help of professional repairmen of similar equipment is required.

In order for the electric meat grinder to delight you with flawless work for a long time, you must follow simple recommendations for proper operation:

before starting work, always carefully check if the assembly is correct and reliable fixation of all parts;
pay special attention to the contact between the cutting tool and the grate - they must fit snugly, the fixing nut must be tightened with effort;
cut the product into piecesnot exceeding the diameter of the loading cylinder, in order to avoid them getting stuck;

disassemble, clean and rinse all parts and the internal volume of the meat grinder after each use;

keep all parts of the mechanical part of the product only disassembled.

Special attention! Before processing meat and fish, it is necessary to free them from bones, remove large veins, make sure that small bones that can damage the knives do not get inside the product.

Do not turn on the meat grinder without loading, do not try to push through the stuck pieces of food with your hands - there is a special pusher for this, never overload it. If you thoroughly fulfill all the requirements, then the product will work flawlessly for the entire period assigned to it by the manufacturer, and she will not need repairs with her own hands.

In our modern world, the electric meat grinder has taken a firm place in our kitchen and any housewife cannot do without her assistant when preparing various dishes. Image - Do-it-yourself electric grinder repair

Experts attribute household meat grinders to units with a simple mechanical scheme. Unfortunately, for the average user, the construction of this device will not be so clear, especially when the meat grinder needs repair.

Electric meat grinders have long been practically indispensable in the kitchen for those who know how and love to cook. And it becomes very sad when the meat grinder breaks.

The zelmer 1500 meat grinder does not turn on. To understand this problem, you need to disassemble our meat grinder.

Every real woman wants to please guests and her family with delicious food. Every self-respecting man should be able to cook dishes with meat. But among the varieties of these dishes, there are those where there is such an ingredient as minced meat.

What to do if your electric meat grinder does not turn meat? Let's show the repair using the example of the Rotor emsh 30 200 1 model

Self-repair of the Kenwood meat grinder, model MG510, with a diagnosis does not scroll.

Meat grinder repair Pomoshnitsa, model EMSh 30/230, does not turn on with a defect with his own hands.

electric meat grinder axion M25.01 inner sleeve broken.

Consider the Kenwood mg510 meat grinder with a defect sometimes starts up "from the pusher"

A meat grinder is simply an irreplaceable device for grinding different types of meat. If earlier most housewives used manual machines, now more and more users prefer electrical devices.This is not surprising, because the electric meat grinder grinds meat of any quality in a matter of minutes, saving the hostess's time and effort.

Unfortunately, all electrical appliances tend to break down, and repairing them is somewhat more difficult than manual ones. This article will tell you how to repair a meat grinder at home, and what you can do with your own hands.

Manual meat grinders are made entirely of mechanical parts. When disassembling, it is always easy to see the breakdown and replace the damaged part with a new one. Moreover, all the components are easy to find on sale.

There is nothing special to break in manual-type meat grinders. Most often, they have dull knives that can be easily sharpened with a fine grinding wheel. Such a circle is put on the axle of the meat grinder instead of a mesh for the output of products and rotary actions are performed with a handle, as when grinding meat.

Occasionally, a strong squeak is possible while the device is operating. Then you should disassemble the mechanism, grease the place of rotation of the handle so that the grease does not get to the meat container.

All parts of hand-held devices are made of metal and cannot break if sinewy pieces or small bones hit, as a person will definitely feel tension at hand and clean the mechanism. The exception is modern manual meat grinders, made of fragile metal.

All electrical meat grinders, regardless of manufacturer, consist of:

engine;
gearbox - consists of several bearings and gears for transferring the power of the motor to the rotational movements of the cutting mechanisms;
knife systems (auger);
control unit;
power cord.

The main reasons for the failure of all brands of electric meat grinders is their misuse. Only a small percentage depends on poor build quality. The quality of the parts themselves depends on the reliability of the manufacturer. It is not worth saving on it, since repairs can be much more expensive, and it is not so easy to find parts on sale.

The most common malfunctions of meat grinders:

the device does not turn on at all;
the meat grinder turns on, but the disc does not grind the product;
the drive works, but does not gain the required number of revolutions;
you hear fumes or smoke during operation;
increased extraneous noise or knocking, which were not previously noticed.

Not always, with the slightest breakdowns, you should take the device to a service center, where it can successfully lie for many weeks, and you will have to pay decently for repairs.

If the meat grinder does not turn on at all, the cause of the breakdown may be in the absence of contact or a malfunction of the control panel.

Disassemble the device by unscrewing all necessary screws. Sometimes the plastic parts of the case snap together, then you should find all the grooves and snap them VERY CAREFULLY. Otherwise, the case may be damaged, then it will not be possible to fold it back. An example of the case disassembly can be found in the pictures of the "SCARLETT" model disassembly.

SCARLETT meat grinder disassembly diagram: unscrew the metal panel

SCARLETT Meat Grinder Disassembly Diagram: Remove the Mounting Screws

SCARLETT meat grinder disassembly diagram: get the gearbox

Check all the contacts, the connection of the power cord to the device, maybe something needs to be twisted or soldered.

If the meat grinder turns on, but the auger does not grind the product, the reason may be a faulty gearbox. Bearings could have crumbled or gears could be worn out from a heavy load or hit by bones.

In this case, disassemble the relay, check all parts for defects. Whether the gears scroll easily, are all the teeth present, are there any extra backlash when moving. Switch on the disassembled device without loading the auger.

Do this carefully so that all parts do not fly to the sides and something does not interfere with the operation of the engine!

Do not forget to photograph or memorize the location of the parts, so that later you do not puzzle over what to put where.

Relay breakdowns are the most common reason for a meat grinder to fail.

If the cause turned out to be defects in the gears (which is very likely, since they are made of plastic), the damaged parts should be replaced with new ones. It is not so easy to find new gears on sale, they are not sold separately for most models. You may have to contact local services to buy the necessary used part from another device or try spare parts from other models.

In some rare cases, the cause of the auger turning interruptions may be the wear of the socket for its fastening or the misalignment of the shaft. This can occur from a constant increased load on the device or improper manufacture of a socket from a metal that is too soft. Loosening of the auger and licking of rotary mechanisms is a very big problem. To eliminate it, you will need the help of specialists.

If the grinder is working, but not picking up the required speed, most likely an overload has occurred. This problem is most common in Kenwood mg devices.

The device should be disconnected from the power supply, disassembled, cleaned and cut the meat before serving into the meat grinder in smaller portions.

The main reason for extraneous noise, knocking in the operation of devices is the ingress of unnecessary objects inside: small bones or veins. They can get stuck and clog the joints between different parts of the appliance. Also, on insufficiently washed parts after previous use, food particles can dry out and cause blockages.

In such cases, the device should be disassembled, cleaned, and all foreign objects removed.