How to remove the button from a grinder. With the replacement of the worn button with a new

Replacing the UShM button 125 Interskol

Many are familiar with the situation when your favorite tool ceases to work for no apparent reason. And if the coffee grinder does not turn on, then the reason is often a simple breakdown, which can be quickly eliminated without special knowledge and tools. Next, we will consider simple methods of diagnosing and repairing power tools using the example of an angle grinding machine. The initial state. The coffee grinder does not start when you press the power button.

To do the work, we will need a multimeter with a number set function and screwdriver. The first thing to check is the wire, more precisely, a fork and a place where the wire enters the case. Press the button and “massage” suspicious areas. Most often, problems arise in the case. If this does not help, and the coffee grinder still does not work, go to the next step.

We analyze the case. To make sure, you can include our tester in the set mode and check the integrity of the wires from the connector to the button entry.

Next in the electrical circuit there is a button. Often the failure of this device is the reason that the coffee grinder does not start. To check this node, you need to put it in the ON and “Ring” position, as shown in the following photo:

In this case, the “rang” button, which speaks of its serviceability, so continue. This chopper uses speed control, so you should also call, after installing it to maximum power.

The following that you should pay attention to if the mill does not turn on, this is the brush. In large corner grinder, the brush holders are located outside, in our case. Inside the case. Remove your brushes and inspect them. Make sure the contacts on the brush are not damaged. The main criterion for the effectiveness of the brush is the degree of wear or size. In this coffee grinder, it was their wear that led to breakdown. Therefore, replacing grinding brushes will help eliminate the malfunction. For clarity, compare new brushes and fully worn out.

If in your case all this worked, and the grinding machine does not work, then the last thing can be checked without a special tool. This is an anchor. To begin with, we will “call” between the iron parts of the anchor and the collector planks. If he calls, this means that the isolation is damaged and the anchor must be replaced.

Next, it is necessary to measure the resistance between neighboring strips on the collector. It should be the same for all steam. If at any point of measurement resistance is several times higher, we can talk about the cliffing of the winding. It should be noted that such a malfunction rarely leads to a complete stop of the engine.

If after the above diagnosis it is impossible to detect a malfunction, and the coffee grinder does not turn on, it seems that you will have to contact the master.

Many are familiar with the situation when your favorite tool ceases to work for no apparent reason. And if the coffee grinder does not turn on, then the reason is often a simple breakdown, which can be quickly eliminated without special knowledge and tools. Next, we will consider simple methods of diagnosing and repairing power tools using the example of an angle grinding machine. The initial state. The coffee grinder does not start when you press the power button.

Read nozzle for cutting porcelain tiles

To do the work, we will need a multimeter with a number set function and screwdriver. The first thing to check is the wire, more precisely, a fork and a place where the wire enters the case. Press the button and “massage” suspicious areas. Most often, problems arise in the case. If this does not help, and the coffee grinder still does not work, go to the next step.

We analyze the case. To make sure, you can include our tester in the set mode and check the integrity of the wires from the connector to the button entry.

Next in the electrical circuit there is a button. Often the failure of this device is the reason that the coffee grinder does not start. To check this node, you need to put it in the ON and “Ring” position, as shown in the following photo:

In this case, the “rang” button, which speaks of its serviceability, so continue. This coffee grinder uses the speed controller, so you should also call, after installing it on maximum power.

The following that you should pay attention to if the mill does not turn on, this is the brush. In large corner grinder, the brush holders are located outside, in our case. Inside the case. Remove your brushes and inspect them. Make sure the contacts on the brush are not damaged. The main criterion for the effectiveness of the brush is the degree of wear or size. In this coffee grinder, it was their wear that led to breakdown. Therefore, replacing grinding brushes will help eliminate the malfunction. For clarity, compare new brushes and fully worn out.

If in your case all this worked, and the grinding machine does not work, then the last thing can be checked without a special tool. This is an anchor. To begin with, we will “call” between the iron parts of the anchor and the collector planks. If he calls, this means that the isolation is damaged and the anchor must be replaced.

Repair. How to remove and connect the Bulgarian button Interskol

The following scheme will help to understand the Ushm button device:

• The start button directly is at position 41, which is built into the case (pos.47).
• The voltage from the power cable is supplied to the launch button (pos.53).
• To control the start button (pos.41) the grinder is equipped with a lever (pos.46).
• Also connected to it are electricity (pos.55) and special brush holders (pos.44).
• Even in the electrical part of the Ushm, which includes the power button, includes the rotor (pos. 31) and stator (pos.42).

For repair buttons launching grinder intercol We will need:

• We unscrew the screws on both sides of the handle with a cross.Shaped screwdriver and remove it;
• Remove the site for adjusting the revolutions, with a flat screwdriver, tidying its latch;
• Using a crucible screwdriver, disconnect the contacts of the network wire from the power button, after removing the clamp;
• Disconnect four wires from the start button, which go from the engine and capacitor to its contacts;
• We extract a broken button from the case.

To make sure that the contacts have burned out in it, it is enough to remove the collapsible cover.

• We attach the removed engine and capacitor wiring to the button contacts. They must be located in the same sequence as on the old button;
• Insert the button back into the housing;
• We fix the site of the revolution regulator back;
• We fasten the contacts of the network wire and clamp;
• Check the work of the grinder at idle;
• Scour the handle lid with screws.
• The grinder is collected, and the button works properly.

Replacing the Makita Bulger button

Simple replacement buttons with ushm Makita

How to change the power button, connection process

The main symptom that the starting device has failed. Is lack of reaction of the grinder when bringing a button to the working position. This defect can also cause critical wear of collector brushes and a break in the power cable wires.

Therefore, it is necessary to diagnose using an electrical device of the multimeter or in its absence using the indicator of the presence of breaks in the circuit. Why is it necessary to remove the plastic case that protects the electric part of the grinder to get to the button, the connection of the power cable and the ability to check the work of the brushes.

If the contacts are not called, they begin to replace it. The whole process, including diagnosis, is described in the video below. It should be noted that the failed here The button is changed to similar in design. In passing, the condition of the brush node of the grinder is evaluated, recommendations are given about a possible smoother replacement brushes.

Shows how it is actually done nicknames of buttons using a multimeter (the indicator of the regime position during the work is located in the “inclusive” position). The button is easily extracted after disconnecting from it supplying wires and a lever for installing operating modes. Disassembling the button once again convinces of its poor repair suitability (small melted plastic parts are not subject to replacement). The new one is established in the reverse order of actions carried out during its extraction.

The next video describes Repair of the Bulgarian Model “Makita” with a non.Operating button. Here, after removing the plastic case, the wear of the brushes is immediately checked by racing them on the multimeter. Visually the brushes are worn out, but also working, which confirm the testimony of the device.

The author, confident in the integrity of the power cord, chooses the object for further diagnosis the launch device. Contact checking is carried out by analogy with the previous video. Having made sure that The button is not working, it replaces with a new, the same type of design. It should be noted the author of a solid tool for working with wires and terminals. As a prevention of the work of the grinder, the red.Hot brushes are simultaneously replaced.

In the next video, the “Interskol 115/900” model (suitable for 125/900) shows replacement and brushes and switch buttons buttons. The store has such buttons in stock and are very cheap. Replace them quite capable without turning into the workshops, thereby retaining their budget.

In the case when it was not possible to find the same button in return for the burned out, you can adapt other designs of launchers in the grinder. In the video, the hole under the button of other sizes is finalized according to the new dimensions. This is not difficult to do in a plastic case. The main thing here Reliable to fix it. The design of the button from the video allows you to do this using self.Tapping screws.

In the future video, the failed button changes to more common in technical devices An ordinary toggle switch. Why in a plastic case, the places that prevent the tolerate in it, and in the area of ​​slots for the air for cooling, are executed in the plastic case with a sharp knife. Over, the marking of this hole is preliminarily made.

The toggle switch is attached using a washer and nuts, pressing it to the plastic case.

The main drawback Tumbler. Any involuntary movement can lead to turning on/off the grinder (the long switch of the toggle switch greatly contributes to this) at the most not suitable moment.

Guarantees that launch devices that do not correspond to the models of the Bulgarians will withstand the load in the form of the value of the current forces passing through them, there is no.

Launch scheme

The design of the grinder, the source of energy of which is an electric current, is able to convert it into a mechanical. The interaction of all nodes of the grinder is shown in the fundamental diagram of connecting its electric drive.

• After the power cord is connected to the outlet and the launch is turned on, The electric current is supplied one of the brushes.
• After passing through the collector winding current appears on another brush, through which power supply fixed stator windings are ensured.
• Created Magnetic fields Stator and rotor windings interact with each other, causing rotation of the rotor fixed in the bearings. Together with him, the torque arises on a conical gear set to anchor. Another conical gear working paired with the first, rotates a spindle with a working tool of a grinder.
• Additional taps of stator or rotor windings allow you to increase the functionality of the power tool by creating various control systems.
• Through Contacts of collector plates Signals are transmitted about the speed of rotation of the rotor to a tachogenerator or Hall sensor. With their help, the necessary revolutions of the grinder are maintained.
• To protect the grinder from overheating is valid The heat protection unit. It turns off the tool if the sensor shows the maximum permissible temperature of the control surface of the grinder.

Understanding the role of each of the elements included in the electrical scheme of the grinder allows you to correctly determine the cause of its breakdown. With good condition of the cord, buttons and brushes should pay attention to the condition of the electric drive.

The button does not hold, the tool turns off

In the future, the video during operation of the same model “Makita” as in the previous video, The button works from increased vibration and the grinder is turned off. The correction method used is extremely simple, even the grinder is not required to disassemble. A sharp.Sharp clerical knife.

The idea is that in the process of working on the clamping of the latch, the growths of plastic from friction about the “osik” of the button, which do not allow him to tightly pressed against the surface of the groove of the latch, are formed. Gently cutting them off with a clerical knife, the grinder leads to the right state, and it no longer turns off during operation. It is important to remove the growths here, the slightest careless movement will lead to a spoiled landing surface with the additional cost of repairing the circuit breaker.

A cunning way

Master Vova Poltava on the YouTube channel of the same name advises working with grinds with a certain look. He is sure that a continuous nut will contribute to excessive delay Circle of corner grinder. As you already know, this is not too necessary while working with a grinder. After all, such a nuance may well provoke a traumatic situation.

The master for all hands recommends buying a nut that will fix the disk, but at the same time simply unscrew. It is not difficult Find in special stores or ask for help from sales consultants. They will be happy to tell you which nuts better choose for trouble.Free work with a grinder in the future.

© Freepik

The essence of the problem

With idle rotation of the cutting disc, the problem does not exist, especially if the circle is relatively light, and the tool has a smooth start function.

After a speed set, at the time of contacting the cutting disk with the processed surface, the next chain of instant actions occurs:

• The disk, meeting the huge resistance of the processed material, loses speed, that is, inhibits.
• The engine rotor for the first moments continues to rotate with the previous speed by inertia and pulls the gear of the gearbox, which carry away the spindle.
• The threads of the spindle head is more screwed into the tag-fixer, which is impressed in the cut-off circle.

Everything, a freelance situation appeared (excessive delaying the corkscrew nut), which is due to the following factors:

• Large diameters of cutting circles.
• High power of the electric motor.
• The massiveness of the rotor.
• High cutting depth (workload).

Unscrew the nut that fixes the detachment disc is now hard.

Repair. How to remove and connect the Bulgarian button Interskol

The following scheme will help to understand the Ushm button device:

• The start button directly is at position 41, which is built into the case (pos.47).
• The voltage from the power cable is supplied to the launch button (pos.53).
• To control the start button (pos.41) the grinder is equipped with a lever (pos.46).
• Also connected to it are electricity (pos.55) and special brush holders (pos.44).
• Even in the electrical part of the Ushm, which includes the power button, includes the rotor (pos. 31) and stator (pos.42).

For repair buttons launching grinder intercol We will need:

• We unscrew the screws on both sides of the handle with a cross.Shaped screwdriver and remove it;
• Remove the site for adjusting the revolutions, with a flat screwdriver, tidying its latch;
• Using a crucible screwdriver, disconnect the contacts of the network wire from the power button, after removing the clamp;
• Disconnect four wires from the start button, which go from the engine and capacitor to its contacts;
• We extract a broken button from the case.

To make sure that the contacts have burned out in it, it is enough to remove the collapsible cover.

• We attach the removed engine and capacitor wiring to the button contacts. They must be located in the same sequence as on the old button;
• Insert the button back into the housing;
• We fix the site of the revolution regulator back;
• We fasten the contacts of the network wire and clamp;
• Check the work of the grinder at idle;
• Scour the handle lid with screws.
• The grinder is collected, and the button works properly.

Useful instruction. How to replace brushes and cord grinder

Often, the Ushm of the company Interskol ceases to work due to the failure of the cord or wear the brushes, which is why they hardly reach the stator and the device does not work at all power.

How to remove the cord, you already know from the previous instructions for extracting the Ushm button (with p.1 by p.3). It remains to figure out how to get to the brushes and replace them with new.

• With the help of a crucible screwdriver, we unscrew the fasteners of the handle on both sides;
• Using the aforementioned scheme, we find the brush holders in which the details we need are located;
• Turn off the brushes from a single electrical circuit of the Ushm, pushing the tip with a flat screwdriver and simply pulling them out with your hands;
• We insert new brushes to this place. If there are no native brushes in the stores, it is allowed to take them a little larger in size. They can be hidden with a file to a suitable size. It is not a problem if the new brushes have other tips. We cut the leash from erased brushes and fasten it to new ones;
• Insert and tighten the handle cover back.

Also check the anchor collector that can be scratched from worn brushes. Scratches can be cleaned with zero sandpaper.

If your Bulgarian stopped turning on when you press the start, do not rush to throw it into the trash and buy a new one. Most likely, the whole thing is in the launch button, for the repair of which there is no special skills and knowledge. Replacing the button for the interscol grinder and other companies. This is much cheaper than buying a new Ushm.

Change the BCL button on a grinder

If somewhere in the country In the process of work, a grinder broke, And retail outlets are located far enough, do not panic. Should Determine the causes of the breakdown And it may turn out that Repair can be done independently. So, for example, when the button to turn on the grinder, there are options for restoring its performance without replacing the failed parts.

The design of the grinder consists of the following main parts: electric and mechanical. In the mechanical component of the grinder, the main character is conical gearbox, reducing speed to an acceptable value. In the electric. Collector engine determines the operation of the grinder where the transmission of the power supply to it is performed using a special switch. Of course, his failure interrupts the supply of electric energy from the network.

The start button broke down, reasons

The switch of the grinder is The whole starting device, in which the button itself is only the point of application of the effort to change the operating modes of the power tool. Transfer to the contact device is carried out using mechanical lever system, where even elements of the structure of the case take part in the fixation.

The switch on is located on the lateral frequency of the Bulgarian Bulgarian Intskol case

The composition of the contact device includes a capacitor, as an element that reduces the possibility of the appearance of sparks in the brush-collection node. Some grinders are equipped a smooth start scheme and a speed regulator, located in the same circuit with the start button. The main reasons for the failure of the starting device are the following.

• Mechanical wear of contacting surfaces buttons, lever, grinder housings. These structural elements can also fail due to loss of integrity (breakdown).
• The elements included in the contact device may fail Due to melting Due to the excess of the current above the nominal value.
• The failure of the electronic scheme of smooth start.

The listed reasons are most often found during breakdowns of the starting device.

How to change the power button, connection process

The main symptom that the starting device has failed. Is lack of reaction of the grinder when bringing a button to the working position. This defect can also cause critical wear of collector brushes and a break in the power cable wires.

Therefore, it is necessary to diagnose using an electrical device of the multimeter or in its absence using the indicator of the presence of breaks in the circuit. Why is it necessary to remove the plastic case that protects the electric part of the grinder to get to the button, the connection of the power cable and the ability to check the work of the brushes.

If the contacts are not called, they begin to replace it. The whole process, including diagnosis, is described in the video below. It should be noted that the failed here The button is changed to similar in design. In passing, the condition of the brush node of the grinder is evaluated, recommendations are given about a possible smoother replacement brushes.

Shows how it is actually done nicknames of buttons using a multimeter (the indicator of the regime position during the work is located in the “inclusive” position). The button is easily extracted after disconnecting from it supplying wires and a lever for installing operating modes. Disassembling the button once again convinces of its poor repair suitability (small melted plastic parts are not subject to replacement). The new one is established in the reverse order of actions carried out during its extraction.

The next video describes Repair of the Bulgarian Model “Makita” with a non.Operating button. Here, after removing the plastic case, the wear of the brushes is immediately checked by racing them on the multimeter. Visually the brushes are worn out, but also working, which confirm the testimony of the device.

The author, confident in the integrity of the power cord, chooses the object for further diagnosis the launch device. Contact checking is carried out by analogy with the previous video. Having made sure that The button is not working, it replaces with a new, the same type of design. It should be noted the author of a solid tool for working with wires and terminals. As a prevention of the work of the grinder, the red.Hot brushes are simultaneously replaced.

In the next video in the intercol model, the work of the starting device causes a lot of complaints. In the video, the author makes a bold conclusion about the non.Compliance of the design of the button of the declared characteristic by the power presented in the video of the grinder. As a result of which the contacts will melt and it must be replaced. True, the store has such buttons in stock and are very cheap. Replace them quite capable without turning into the workshops, thereby retaining their budget.

In the case when it was not possible to find the same button in return for the burned out, you can adapt other designs of launchers in the grinder. In the video, the hole under the button of other sizes is finalized according to the new dimensions. This is not difficult to do in a plastic case. The main thing here Reliable to fix it. The design of the button from the video allows you to do this using self.Tapping screws.

In the future video, the failed button changes to more common in technical devices An ordinary toggle switch. Why in a plastic case, the places that prevent the tolerate in it, and in the area of ​​slots for the air for cooling, are executed in the plastic case with a sharp knife. Over, the marking of this hole is preliminarily made.

The toggle switch is attached using a washer and nuts, pressing it to the plastic case.

Guarantees that launch devices that do not correspond to the models of the Bulgarians will withstand the load in the form of the value of the current forces passing through them, there is no.

DIY switch repair: how to make, disassemble, redo and assemble, check with a multimeter

To carry out repair of a broken grinder The mandatory execution of the following actions is required:

• Disassemble and collect a grinder, clean the surfaces should only be on the power tool disconnected from the network;
• Repair actions are carried out With a working tool removed, for the fixation of which the stop button is responsible, And a protective casing;
• For the convenience of disassembling and assembling the grinder you need to have a locksmith tool in the form of cross and flat screwdrivers, a set of nuts and an electric tool for working with terminals and wires;
• Mechanical wear of the button inclusions can be determined by spontaneous shutdown of the grinder from vibration during operation;
• After disassembling the plastic body of the grinder, make sure there are no breakdowns on the thrust body and perform diagnostics of the electric part;
• For diagnosis, they are used Multifunctional electric device. Multimeter, which is installed in the resistance measurement mode and used to check the integrity of the circuit (in the case of its low value, light or sound alarm is triggered);
• Having made sure that the trigger was the reason for the lack of performance of the grinder, namely not working contacts, measures should be taken to eliminate the malfunction.

The next video shows as you can Save the performance of the shutdown button, If not all contacts have failed. Even one whole contact allows you to do this. By connecting directly the wires of the failed contact, leaving the whole contact not touched, you can quite safely carry out work with such a grinder without using the shutdown of the shtepsel from the outlet to stop working.

The next video shows Repair of broken thrust of the lever system of the shutdown button. Such an independent repair can do a good locksmith. Of course, the strength of the plastic lever is less than steel. The twisted working end will serve incomparably longer than the plastic.

However, the dielectric properties of a plastic lever guarantee the absence of a short circuit in an electrical circuit of a grinder, which cannot be said about metal thrust. The use of electrical insulating cardboard as a material that protects the winding from the closure does not ensure its reliable mount, the documentation of this method of isolation is not provided. There is no option to install an electrocardon in the video.

In addition, metallic thrust will quickly disable the plastic button, since soft plastic will operate on the cut with a rigid strip metal. That is, any deviations from the structure carry a certain influence on the performance of the grinder and they are not always for the better.

Source of increased danger. Ushm⁠ ⁠

“Bulgarian” is among the people or Ushm for a long time known and popular. Use it at work.

Over, they always put on glasses to protect the eyes. All adults are adequate. However, we have one Ushm, when working with which, sawdust fly in the face and not only that. In the eye. Recently, there are already two cases. I had a chance to use this apparatus. When turning on, a flow of air from the impeller of engine cooling, and with it, incomprehensible something flew into the face, from ventilation holes. Since I am not special for power tools, I did not immediately understand that something was wrong here. A little later and I “flew into my eye”. Over, I myself gnawed and put on my goggles on top. It did not help. Okay, at least washed his eyes and cost.

Now a photo of the apparatus. Used mainly for metal cutting.

At first glance, nothing unusual. The openings are just located abnormally. There is something to compare with. There are several more Ushm in the work, but all exhausts are located forward. Here is an example:

Not a fig is clear, I had to climb the Internet and watch the original picture. Then it dawned on me. They opened the grinder earlier and collected incorrectly. In the picture the exhaust should go down from the motor !

Hyundai H1, Grand Starex. Муфта кондиционера

We re.Re.Crossed the tool, smeared, turned the case with a 90 degree gearbox, at the same time served the collector, replaced the brushes.

Everything works wonderful, everyone is happy. It is a pity that earlier there was a special, who, out of ignorance or out of Ukraine, may purposefully collected the instrument so. As a result, work with this grinder led to increased risk and injuries.

So be careful. Sometimes the problem arises out of the blue.

Repair of the Bulgarian “Interskol” Ushm-125/1100E

Replacing the power button at the Intercommay grinder Ushm.125/1100E. Do.It.Yourself repair With you 250 rubles. A few years ago I tried to cut a brick with a grinder. The Bulgarian is low.Power and did not pull. I burned a grinder. I chose for a long time what to buy. According to the characteristic, the price/quality chose “Intercommit” Ushm-125/1100E. It is a powerful 1.1 kW and a revolution regulator is. And it seems like domestic production devices.

The Bulgarian regularly worked for more than 3 years. And polished wood, and the pillars of asbestos.Cement saw. The button was only tight turned on. This summer I decided to grind the siduh for a stool, squeeze the button, and the grinder does not start. Here’s the trouble, the project of a new stool from oak has stopped. I could not burn the engine, in total, Ushm worked for no more than 10-15 hours. By mileage. New car. I dug up the Internet, there was a birth injury at Ushm-125/1100E-this is the inclusion button. She breaks on.

I went to the Savyolovsky Radio Base, in the farthest pavilion complained to the seller of life. He wanted to show him a photo of a button, he waved his hands at me and said that he knew about this unfortunate button. And took out a similar one from under the counter You have 250 rubles I knew for sure that the button costs 100 re, but did not bargain with a greedy seller, I bought it.

Then everything went like clockwork. I twisted six screws on which a plastic casing was attached.

I represent a brilliant design solution. From the key key to the button that turns on the grinder, there is a long plastic strip. The front on the front, and the button in the back. Unscrew from the button of the terminal of the network wire.

Now you need to remove the cover with the regulator to access the button. It is attached to plastic latches. And here is the culprit of the breakdown.

Compared the new button with the old one, it seems like the same buttons are the same.

We throw the contacts from the old button to a new.

Blue wires. Two central terminals. Two black wires. Extreme terminals on the right and left.

Install a new button in the place of the old.

When we install the casing, you should not forget to place the network wire correctly. So that the grooves coincide. Testing the Ushm on the old pipe. The key began to turn on easier. Ushm-125/1100E works “Interskol”. The pipe is cut. Just in case, I took a close.Up button in close.Up so that the marking was clearly visible. In case someone decides to order a button in the online store.

Diagnosis of the electrical part of the Ushm

As mentioned above, most often Ushm refuses to work due to breakdowns of the electrical part of the unit. For the correct diagnosis of electrical circuits of the tool, the wizards for the repair of electrical equipment are used by a special device. Tester.

If you pressed the unit starting button, and it does not work, then in 90% of cases the cause of the breakdown is not so serious that you cannot repair the grinder with your own hands.

The first step is to be required Checking an electric cable and forks At its end. If it is collapsible, then spin it and check the reliability of the contacts. Otherwise, you will have to disassemble the grinder (remove the casing of the device) and “call” the cable by the tester, and also make sure that the current is suitable for the “Start” button contacts. If the device shows a break, then the cable should be replaced with a new.

The situation when the current enters the button, but does not go further (when the position is turned on) says Swimmer malfunctions. The button cannot be repaired. It must be replaced with a new one, but first march the contacts removed in order to connect them correctly in the future. When the contacts are incorrectly connected, the engine winding may burn out.

If when checking it turned out that both the cable and the start button are working, but the current does not enter the brushes, then it is necessary to produce cleaning the contact plates of the brush holders. In case of ineffectiveness of this procedure, it is recommended to replace the brushes. Further, if everything is fine with the brushes, and the current comes to them, you should check the rotor and the stator for the presence of circuits and cliffs.

Checking the anchor of the electric motor

The electric motor rotor may have the following malfunctions: inter.Seal circuits and wiring at the lamella contacts. You can check the anchor of the grinder with a multimeter: the device is converted to the mode of change in the resistance, the value of 200 Ohms is set, and the resistance between the two neighboring lamellas is measured using probes. Thus, it is required to check all pairs of lamellas. If the resistance indicators are the same, then the rotor winding has no damage. Detection of other resistance values ​​during the “rang”, as well as the identification of a chain cliff indicates a malfunction in this coil. In this case, you will need to repair the anchor of the grinder.

If you do not have a measuring device, then you can check the rotor by using for these purposes 12 V and battery bulb. Power should be in the range of 30-40 watts. The verification is done as follows: supply voltage 12 V from the battery to the corner grinder fork, connect the light bulb in the gap of one wire, begin to rotate the ear spindle. With a good winding, the light bulb will burn evenly, without blinking. With an interval circuit, the degree of intensity of a spiral of the bulb will change. In this case, the repair of the armature of the grinder with your own hands will be difficult, since the winding scheme of the anchor is quite complicated, and the process itself requires special equipment and knowledge. Therefore, this operation is recommended to entrust to specialists. But the best way out of the situation will be to replace the anchor on the grinder with a new.

If the bulb does not light up when testing the rotor, this indicates the presence of a cliff in the stature or closing in its windings, as well as problems with electrographs.

Checking the electric motor stator

To check the stator of the grinder, they use, as in the previous case, multimeter. Values ​​are needed set at 20-200 Ohms And do the following. Touch one probe to the contact of the stator winding, and the second. To the part of the part. If the device shows resistance, this means that a breakdown on the case occurred. Touch the probes to the contacts of one winding, and then to the contacts of another. If the resistance is the same, then the coils are serviceable. If on one winding the device shows a chain break, then it will require a rewinding of a stator or replacing a part with a new.

Hyundai H1 Grand Starex. Ремонт кардана

Rewind the stator at home, without special knowledge, skills and equipment, it will be problematic. It is better to contact specialists professionally engaged in engine rewinds.

Starting (inclusion) buttons for bells (Ushm) choose the product

Bulgarian start buttons. The tool management element providing comfort and safety of the tool, interrupting and connecting the engine power circuit. Most buttons are equipped with a random turning on, without interaction with a special button or switch, the start button does not launch a grinder, mechanically or electrically. Some buttons are equipped with fixing both provisions, which accepts most users, although this is not justified in terms of security.

The button performs the simplest function. Closes and opens the contact depending on the position of the key. Diagnosis is simple. A multimeter, in the call mode to determine the integrity of the circuit, closing the contact of the entrance and output. Each button is mandatory marked by the scheme on the case, according to which the switching is understandable, respectively, the purpose of the call. Also, the diagnostic technique can be used to connect the engine directly by connecting the engine power directly from the network cable, bypassing the button, the capacitor, the regulator smooth start and other electronics, not forgetting to first check the network cable! (or to use obviously a whole when diagnosis). During operation, in the inside of the button, dust falls on the contact pair (in t.H. Conductive), which worsens the quality of the contact, up to the full termination of it. Often, it is enough to disassemble the button and restore the contact with mechanical or chemical cleaning (for example, WD-40 and its analogues, as well as using soft equipment and engraver, in extreme cases with an emergency sheet with a high number and other ways. Important: the surface of the contact should be qualitatively prepared and smooth, without deep scratches, otherwise, repairs. A short.Term decision! If the contact is silver, work on its restoration is meaningless!). Also, mechanical defects of the keys and housing, can be disrupted by the button, inaccuing the contact with standard operation.