Do-it-yourself mim 600 meat grinder repair

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.

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.

1. 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.
2. 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.

1. Winding direction.
2. Number of turns.
3. 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:

1. 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.
2. 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!

WITHservice Ccenter REMO. PLUS - repairs professional MIM meat grinders of the MIM-600, MIM-300, MIM-350 and MIM-80 models. MIM meat grinder repair technicians in our SC will carry out a full diagnosis of faulty equipment, select the necessary parts, after determining the cost of the repair, they will agree it with you, and after the agreement they will start repairing, and after the repair, a guarantee is provided WITHservice Ccenter REMO + on the parts installed and the work performed.

If your MIM meat grinder needs repair or those. maintenance, diagnose, or even assess the feasibility of repair? Call, contact, bring faulty MIM meat grinder in the workshop REMO + , our experts will help - repair!

We ourselves can deliver your faulty equipment for repair to the REMO + SC. Delivery cost in the city from 0 to 500 rubles. Depends on the type / model of the device and the area of ​​the city. You can clarify by phone.

If you bring the faulty equipment to the workshop yourself, We will diagnose it for free!

The Service Center's warranty for work performed and installed parts is up to 1 year.

When handing over for repair more than one device and regular customers, a discount - 10%

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.

Sometimes the cause of extraneous noise and sharp sounds in the operation of the electric meat grinder can be crumbled bearings. They are easy to find on sale and replace.

If you hear fumes or smoke from a working meat grinder, most likely the reason is engine breakdown.

To repair the motor yourself, you will need some knowledge of electrical engineering, the direction of alternating current, adjusting the operation of a synchronous and asynchronous motor. If there is no such knowledge, it is better to immediately contact the service center. But, at the same time, the importance of repairs should be appreciated.

The cost of repairing a motor is usually very high, so sometimes it is easier to buy a new device under warranty than to repair an old one.

If you have certain knowledge, it should be borne in mind that both spirals of the electric motor winding are offset from one another by 90 degrees. In the second winding, the currents differ in phase. As a result of this difference, the rotor starts. The difference in currents is created by the capacitor. It is used to provide the initial acceleration of the rotor.

Electric meat grinder motor and rotor

The motors for household electric grinders are asynchronous. In them, the rotor speed lags behind the stator magnetic field. A damaged capacitor can be the main cause of a grinder breakdown.

If the capacitor is damaged, it should be replaced with a new one.

When buying, pay attention to the capacity and voltage rating.

If one of the windings is burned out, the motor must be rewound.

In any case, before repairing a meat grinder at home, you should evaluate your strength and knowledge so as not to aggravate the breakdown.

The electric Zelmer meat grinder is, of course, more convenient in our household use in comparison with a simple mechanical meat grinder.

The electrical circuit of the meat grinder can be attributed to simpler circuits.

Zelmer electric meat grinder

As with every household appliance, the meat grinder has its own causes of malfunctions:

• untimely care;
• power surge;
• mechanical damage

and other reasons. What can be attributed to untimely care? - Poor sharpening of the cutting edge of the knives is admissible. In this example, a load is created both on the electric motor of the meat grinder and on the electric circuit of the meat grinder, at which a malfunction of both the electric motor itself and the capacitor in the electric circuit of the meat grinder can occur.

You cannot name all the reasons at once. Let's say you bought a meat grinder in the winter, brought it home and plugged it in right away. In a warm room, condensation has formed on the stator windings, - you connected it and the electric motor of the meat grinder immediately burned out. It is also necessary to pay attention to the correct use of household appliances.

The mechanical part of the electric meat grinder is shown in Fig. 1.

In general, no clarifications on this part are required. Timely it is necessary to monitor the cutting part of the knife, as well as monitor the grate so that it does not become clogged with tendons from the meat.

The photo shows the electric motor of the Zelmer meat grinder, - with a gearbox.

In this unit, the cause of a malfunction can be both a malfunction of the electric motor itself and wear of the gear transmission of gears.

Consider the electrical diagram of the Zelmer meat grinder without additional elements in Fig. 2, an explanation in this topic will be given to the main causes of malfunctions of the electric meat grinder, such as:

The two stator windings of the electric motor are offset from each other by ninety degrees. The current in winding B differs in phase from the current in winding A, due to this difference, the initial start of the rotor is ensured.

The difference in currents between the two stator windings is created by a capacitor, namely, the current value for winding B will be greater than that for winding A.That is, the capacitor in the electrical circuit here serves to ensure the initial acceleration of the rotor.

The electric motor of the meat grinder is asynchronous, the rotor speed of which lags behind the rotation speed of the stator magnetic field.

Consider some of the causes of a malfunctioning electric meat grinder. For example, your diagnostics established a capacitor malfunction. How to choose the right capacitor?

The tolerance in the deviations of the capacitance of the capacitor is not important, since the deviations in the capacitors are insignificant. Important characteristics are the capacitance of the capacitor itself and the nominal voltage value of the capacitor.

The next reason for the malfunction is a burned out electric motor. With such a malfunction, it is easier to replace the electric motor itself, if the cost itself is more acceptable for purchase.

These parts are available from the radio store. If the capacitor you need is not on sale, the capacity of the capacitor you need can be selected from two separate capacitors, let's say two capacitors. In this example, to increase the total capacitance, two capacitors are connected in parallel.

Minor causes of malfunctions include:

• break in the mains cable wire at the base of the plug;
• break in the wire of the network cable along its length

A general diagnosis of all connections can be carried out - with a probe. Diagnostics of the electric motor is carried out by the Ohmmeter device or by the Multimeter device, previously set to measure the resistance of the stator windings of the electric motor.