Service maintenance sewing machines includes providing the necessary set spare parts to household sewing machines ... About availability in workshop this or that spare parts can be found by calling 680-61-45 and 680-58-56.
Here is a list of the assortment spare parts to sewing machines:
Sewing machine pedals
- Sewing machine pedal seagull
- Sewing machine pedal Podolsk
- Pedal for sewing machine veritas
- Brother sewing machine pedal
- Singer Sewing Machine Pedal
- Toyota Sewing Machine Pedal
- Janome sewing machine pedals
Sewing machine pedal drive
Adjusting the sewing speed with the foot pedal of the sewing machine
Depending on the sewing machine models adjustment may be smooth or stepped. Smooth allows more accurate tune necessary sewing parameters.
Drive unit sewing machine it happens mechanical (hand or foot) or electric... IN modern models used by electric drive... It allows not only to free both hands, but also to influence sewing speed lightly pressing your foot on special pedal... For household sewing machines are used electric motors alternating current power from 50 to 90 W, but in most models this is 60 or 70 watts. On the case sewing machine indicate not this value, but the established power the whole cars... In modern household sewing machines from electronics put low-voltage engines direct current voltage 30 V.
Electromechanical sewing machines equipped electric motor , with which the flywheel is driven. The rotation speed is controlled by foot pedal: the more pressing force, the higher sewing speed... Functions are controlled by mechanical switches on the housing sewing machine.
Sewing speed regulated pressing force on pedal electric drive, and the maximum speed can be set using a switch. Depending on the model sewing machine adjustment can be smooth or stepped. Smooth allows more exactly tune necessary sewing parameters. Inexpensive models sewing machines may not have this switch.
Maximum speed limiter
Sewing speed any domestic sewing machine can smoothly regulate pushing on pedal... For sewing especially difficult and critical areas of the product, the presence of a limiter is very useful maximum sewing speed... Such a regulator, allowing smooth speed limiting, can be located on panels cars... Sometimes the stopper is placed on pedals and such a switch allows you to limit the speed to half.
Elements of modern electronics sewing machines provide stop electric motor even with pressed pedals if a hard object (pins, fasteners) gets under the needle. If sewing is interrupted for any reason (such as a slipped pedals feet), the needle will normally stop in the uppermost position, which is considered optimal from the point of view of safety.
If a pedal sewing machine does not work, you can either buy new or renovate old.
The sewing machine pedal has broken
The pedal often causes the sewing machine to fail. The sewing machine suddenly starts to stop periodically and only after a few clicks "all the way" on the pedal resumes its course.
But soon the sewing machine stops altogether, and even if you do not press the pedal, it will not work. The first thought that comes to mind in such a situation is that the engine "burned out".
In fact, it was the pedal that broke, not the electric motor.
Causes of pedal breakage
Actually, in many such cases, pedal repair is not needed, since the reason can be banally simple. The contacts of the connecting plugs are oxidized or the wire inside the insulation of the cord breaks.
It is not difficult to eliminate oxidation of contacts - you need to clean the contacts with sandpaper. But a broken wire inside the wiring is difficult to find - you need a tester. A wire breakage inside the insulation occurs for various reasons, but mainly due to carelessness in the connecting wiring of the sewing machine pedal. This happens when you frequently pull the plug out of the socket by the cord, or when you repeatedly press heavy objects on the cord, such as chair legs.
You can replace all the wiring without looking for a break. But only a master can do this. Connecting plugs are often not disassembled as they are molded at the factory along with contacts and wiring. A reasonable way out in this case is to buy a new pedal for a sewing machine, and often complete with an electric motor.
Pedal repair
The design of the pedal of household sewing machines that do not use electronics is very simple and is a switch in the form of a rheostat, which consists of many graphite plates.
The graphite parts of the rheostat "burn out", a coating appears on their surface, which prevents the cooling of the electric current. As a result long work pedals, it goes out of order.
The main symptom of a pedal breakdown is the absence of a slow speed sewing machine. For the sewing machine to start sewing, you have to press the pedal "all the way". At the same time, she scribbles on the most high revs... For comfortable work on the sewing machine, you need to buy a new pedal.
As for the pedal with electronic control, repairs can only be carried out by an electronics master.
Home sewing machine setup
Adjustment and adjustment of the sewing machine units
Even the most good ones sewing machines may break... If a sewing machine has ceased to sew a straight line, skips stitches, the stitched line unravels, which means lost customization or worse, it happened breaking sewing machine.
Often you can try to determine the cause of the breakdown yourself by carefully studying the instructions. But still, you should not repair sewing machines yourself, if you do not want to worsen the situation, breaking some other detail.
Similar problems can occur with household sewing machines and with industrial, but there is a significant difference: malfunction even one industrial cars will affect the operation of the entire production. That is why, in such cases, timely setting and adjusting sewing machines.
First, consider which types of pedals are suitable for your sewing machine and choose the one that suits you best. Pay attention to the shape of the foot control electrical connector and compare with the shape of the connector on your sewing machine. If the connector is the same, then the pedal will probably work for you.
Quite often, users of household sewing machines are faced with a breakdown in the form of an inoperative pedal of the electric drive of the sewing machine. There can be several reasons for this kind of breakdown, and the speed and success of the diagnosis directly depends on the accuracy and correctness of the diagnosis. renovation works... If you managed to accurately determine the cause of the problem, then it is possible to carry out a successful repair of the electric drive pedal of the sewing machine with your own hands.
One of the most common reasons for the failure of the sewing machine pedal can be considered oxidation of the contacts inside the pedal. It is quite simple to fix such a problem yourself. It is necessary to carefully disassemble the pedal body, having previously disconnected it from the network, and clean the contacts with sandpaper or any other effective way... Then it is necessary to assemble the pedal in the reverse order and only then connect it to the mains and test it in operation.
The next, no less common cause of breakage of the sewing machine pedal is damage to the electrical wiring. If the cables are used carelessly, there is a possibility of damage to their integrity by constant bends in the same place, or by physically damaging one of the cables with a heavy or sharp object. In any case, it is sometimes difficult to determine the exact area of \u200b\u200bthe pedal cable break without the necessary instruments, so the damaged cable must be completely replaced.
Any more complex repairs to the electric drive pedal of the sewing machine or the motor itself are best done at a service center, because:
Our service center employs competent specialists who can accurately determine the causes of a malfunction and effectively eliminate them;
Service workshops equipped the latest equipment, and the service masters have at their disposal all the tools necessary for the repair of any complexity;
After successful repair work, you are provided with an official guarantee of our service center.
If you do not have the proper education and the necessary technical skills, then in the event of problems with the electric drive pedal, it is best to contact our service center without delay.
Repair of the electric drive of the sewing machine
Undoubtedly, it is quite possible to repair the electric drive of a sewing machine at home, however, for this you need to be a professional engine repairman and have at your disposal all the devices, tools and materials necessary for repair. If you are not a professional in the field of repairing electric drives, then immediately after a problem occurs, contact our official service.
Never try to repair the drive yourself, as this can lead to disastrous consequences. The most correct and correct decision would be to call the master at home or take a broken sewing machine to complete set to a service workshop, where qualified specialists will efficiently eliminate the arisen malfunction.
Many household sewing machines are equipped with an electric drive of the TUR-2 brand, for example, many models of sewing machines of the Chaika type, and even they are found in Podolsk lockstitch machines. it reliable engine, but sometimes it is required to carry out a preventive examination, and sometimes repair. For example, remove carbon deposits on the engine manifold, replace brushes, find a break in the cord, lubricate bushings, etc.
In this article, you will learn how you can do it yourself without going to a sewing machine repairman.
Bracket for fixing the electric motor
The screws securing the motor to the bracket are much more powerful than the nuts hidden inside the body. And the thread of the nut is easy to rip off by tightening these screws with a powerful screwdriver. It will be very difficult to fix this breakage, so do not put much effort in this node.
Remember that these screws can be used to adjust the belt tension.
The motor mounting bracket has a special shape intended only for mounting the TUR-2 electric motor.
Sometimes it is necessary to remove the pulley from the motor shaft. To do this, first unscrew this screw.
Then you need to take a large screwdriver and pry the pulley with it, as shown in this photo.
It is not necessary to completely unscrew the pulley fastening screw so as not to lose it. It is only necessary to unscrew it completely only when you decide to lubricate this thread in order to eliminate oxides and rust.
By unscrewing these four screws completely and removing them from the cover, the motor housing can be split into two halves.
Just teach that not the part of the case from which you pull the screws out will be removed, but vice versa - the lower one. After the screws have been removed from the housing, turn the motor over and remove the cover.
All household electric motors for sewing machines have the same design. Therefore, this article can be useful for many cases of troubleshooting in the work of electric sewing machines or overlocks.
So in the foreground is the collector - the main culprit for malfunctions of this type of electric motor.
This part is called a capacitor, but it rarely fails.
This photo clearly shows how the electric drive of a household sewing machine works.
This model household electric motor does not have bearings, instead of them there are bushings that periodically need to be lubricated with one or two drops of machine oil.
Inspect the windings of the rotor, copper wires should not have scorched, darkened areas.
The stator winding, wrapped in insulating material, must also be free of scorched spots.
For "advanced" masters, you can see that if you solder the stator contacts from the left brush to the right, and the second - vice versa, the motor will rotate in the other direction. Reverse rotation engine is provided for many overlock models.
If the engine sparks, buzzes and runs slowly during operation, warming up quickly, it is recommended to inspect the brushes.
The brush is pressed against the surface of the collector by a pressure.
Over time, graphite rods burn out, wear out, and even a long spring will no longer be able to correctly press them against the collector surface. These brushes need to be replaced.
Free advice: if you cannot find an analogue of such brushes, then know that graphite is very easy to grind off with a file. And if you wish, you can grind brushes of the desired shape and size from other brushes of a larger size.
The collector surface must be perfectly flat and clean. In this case, the brushes will be tightly pressed and will not create sparking, the engine efficiency will be maximum.
The collector surface can only be cleaned with plain paper. Sandpaper will scratch the surface and will only impair motor performance. Excess graphite dust can be removed with an alcohol swab.
In this article, you will learn how to find the cause of the malfunction of the electric drive, as well as how to replace the electric motor yourself.
Such a need arises very rarely and it arises only when it is necessary to replace the electric motor of the sewing machine or the drive belt.
A sewing machine pedal often causes a "breakdown" of the electric drive. The sewing machine suddenly starts to stop periodically and only after a few clicks "all the way" on the pedal resumes its course.
It happens that the sewing machine stops altogether, and even press the pedal with two feet, it will not work. The first thought that comes to mind in such a situation is that the engine "burned out".
In fact, broke sewing pedalrather than an electric motor. This can be determined at least because the engine, before "burning out", makes it known. There is a strong smell of burnt electrical wiring, and he himself heats up no less than the iron.
Before deciding that the engine "burned out", touch it with your hand, you can even smell it,
Actually, repair sewing machine pedals in many such cases, it is not needed, since the reason can be trite. The contacts of the connecting plugs are oxidized or the wire inside the insulation of the cord breaks. Oxidation of the contacts is not difficult to eliminate, you just need to clean the contacts with sandpaper. But a broken wire inside the wiring is very difficult to find, and a tester is required.
A wire breakage inside the insulation occurs for various reasons, but mainly due to carelessness in the pedal wiring. This happens when you constantly pull the plug from the outlet by the cord or hit the cord with angular, heavy objects, such as a chair leg.
You can replace all the wiring without looking for a break. But this can only be done by an electrician, and even then not always, since the connecting plugs are often not disassembled, since they are molded at the factory along with contacts and wiring.
The only way out in this case is to buy a new pedal for a sewing machine, and sometimes also complete with a motor, which is of course more expensive. See How to disassemble the clipper and replace the electric drive.
You will not be able to restore the wiring yourself, and most importantly it is pointless, since an open circuit may appear after a while in another place. Once there was one break, then soon another one will appear. And in general, we categorically do not recommend repairing electrical appliances with your own hands. Electricity is a "serious" business and only a specialist should do such work.
2. How the pedal for a sewing machine works
The sewing pedal circuit for household machines that do not use electronics is very simple and is a switch, only in the form of a rheostat, which consists of many graphite round plates. The graphite parts of the rheostat "burn out", a plaque appears on their surface, preventing electric current... As a result of many years of long-term operation of the sewing pedal, the pedal fails, although external signs you will not find it.
The only sign of this is when the slow speed of the car "disappears". When the pedal has to be pressed "all the way" for the sewing machine to start working, and then immediately at the highest speed. This is a clear sign that you need to buy a new pedal for your car.
If your machine has a pedal of approximately the same pattern, then you can move the rheostat body. This can adjust the smooth, jerky-free operation of the electric drive of the machine.
3. Can the sewing pedal be repaired?
Electronic pedals for a sewing machine cannot be repaired sometimes even by a sewing machine repairman. Rather, the telemaster needs to do this, since inside she has a microcircuit and a board made of radio components and a circuit and different testers will definitely be needed. And by the way, these pedals, which are included in many models of Soviet-made sewing machines Chaika and Podolsk, very often break.
Such a pedal stops working suddenly, but necessarily at the most inopportune moment. By this sign, you will easily understand that the pedal has broken down forever. But seriously, inside the pedal the main radio component (thyristor) simply breaks down and therefore it suddenly stops working.
These pedals are easy to distinguish from others. They have a plastic body and are much lighter than other types of pedals as there is only one small board inside. Another difference is that the wire is mounted directly into the pedal body and cannot be disconnected, as, for example, for a sewing pedal to the TUR-2 electric motor.
4. Sewing pedal for the TUR-2 electric motor
Another sewing pedal often used in zigzag sewing machines such as Chaika, Veritas sewing machine, Podolsk. Very good pedal and comes with the TUR-2 electric motor, too good quality... True, its fragile body often breaks, but this is not the fault of the pedal, but the mistress of the sewing machine, who treats her carelessly.
The body of this sewing pedal is very fragile, and the top cover is held by a slight ebb over the lower body. Often this protrusion breaks when struck or pressed hard by the foot and the pedal "opens". Here is the moment when you will see how the pedal works.
You can fix this damage yourself, but you will need to restore the limiter in any way convenient for you. For example, glue or screw on a small plastic or metal stopper.
In order to disassemble this sewing pedal, it is necessary to pull out the sleeve connecting both halves of the pedal. It is easy to find where this bushing is, but to find out that it is also fixed with a screw is difficult. There is a hole in the middle of the bottom cover at the level of the sleeve, which is sealed with putty. Under the putty is the screw that securely grips the sleeve. Unscrew it and the grommet is easily removed.
What is this secrecy for? Most likely, so that not everyone can disassemble a rather unsafe electrical device. I hope you also understand that disassembling electric pedals is dangerous.
5. Do not leave the pedal plugged in unattended
After self repair Do not leave the sewing pedal plugged in for a long time unattended. From inept adjustment of the rheostat, the sewing pedal can be in the on mode constantly and overheat.
If you take your foot off the pedal, there should be no voltage at the output contacts of the plug going to the electric motor, since the electrical circuit is completely disconnected. But, you can break this chain without knowing it.
Even when you take your foot off the pedal, a weak current will still flow to the rheostat. The chain closes, but you will not understand this, since the sewing machine will be motionless. As a result, both the pedal and the electric motor will gradually heat up and heat up, and then you yourself know what happens ...
Therefore, if you cannot check this with a tester, just make it a rule that any sewing machine, even a new one, should not be left unattended in an outlet, and even more so for a long time.
6. The first models of sewing machine pedals
Well, and the last "rarity" that "our" cars have since Soviet times. Especially often, such a pedal can be found on lockstitch sewing machines such as Singer, Podolsk. I don’t know who came up with this design, but the fact that using this sewing pedal is more comfortable with your thumb than your foot is for sure. As for the rest, this is a fairly reliable and "eternal" sewing pedal. And the wiring does not break inside her insulation. If you want, you won't break it, such a thick wire. And the rheostat never burns out and it is quite difficult to even split the case. So, if it comes with the electric drive of your sewing machine, and do not expect it to serve for a long time.
How a modern household sewing machine with an electric drive works. Major malfunctions of components and mechanisms.
The opinion of the master about which sewing machine is the best. Details about a used Rubin sewing machine and other old models of the Veritas brand.
What are the advantages of the horizontal shuttle. How such a shuttle works, its possible malfunctions and how to fix them.
Just like the pedal, the electric motor is not worth repairing yourself. Moreover, there is nothing to repair there. The engine is either running or not running. If it does not work, and you know for sure that there is no other reason for this, then it does not need to be repaired, but replaced. And to figure out when you need to change it, read this article.
If you have such a machine, then it can be converted. Instead of a manual drive, put an electric drive with a pedal. Buy the cheapest kit. Just do not confuse the motor rotation, as the overlock motor rotates in back side... It is desirable that the pedal for the sewing machine is not the "cheapest" and has a ceramic body.
The foot drive is difficult to use literally and figuratively. In addition, it knocks hard, which usually requires a bearing replacement. The best solution for a broken foot drive - use it as a table, and install an electric motor to the machine. And then you can control the machine using a sewing pedal.
In order not to overload the electric motor and sewing machine pedal at the same time, use elastic and not too thick threads. Also, do not sew fabrics that are not intended for household sewing machines. The electric drive from this is experiencing increased loads, heats up. And the first thing the sewing pedal fails.
How can the needle affect the operation of the sewing machine pedal? It is not just one thing that affects, but many factors in a complex. For example, thick coarse fabrics, a blunt needle with a curved point, continuous operation of the engine without stopping, etc. All this becomes the reason that the sewing machine pedal "burns out".
A faulty sewing machine pedal can cause a lot of trouble when using this equipment. Even if the machine does not stop completely and reacts to pressing the pedal, it may not pick up the speed, or, conversely, without smooth acceleration, it can break into maximum speed, and can respond only after a few presses on the pedal ... Anyway, if the pedal breaks, it becomes impossible to sew to sewing machines.
The first difficulty lies in the fact that all the listed difficulties may not necessarily be a consequence of the fact that it is broken. It can be a motor, wire, contacts. Only after making sure of their working condition, the conclusion is obvious: it is the faulty pedal of the sewing machine that is to blame.
The complexity of the repair depends on the type and device of the pedal itself. They come in two varieties, depending on the model of the machine: a pedal with a rheostat and an electronic filling. You can determine which one is in your sewing machine by its weight. A pedal with a rheostat is usually much heavier than an electronic one. This is due to its internal design.
What is the difference between the repair of rheostat and electronic pedals for sewing machines?
A pedal with a rheostat most often fails due to its fragility and careless use by consumers. Repair of the pedal of this type of sewing machine is usually required after prolonged use. Moreover, the threat of breakage can be determined in advance, by the first signs: the sewing machine starts to get under way only at the end of pressing the pedal. If you do not pay attention to this in a timely manner, then the pedal of the car will simply scatter into fragments and the essence of the repair will consist in gluing all the particles with very good and durable glue or replacing the pedal with a new one. The second option is, of course, more reliable.To avoid problems with the pedal of the sewing machine, it is advisable to avoid harsh and strong presses and do not leave it plugged in if you are not using the sewing machine.
If the electronic pedal breaks down, it is unlikely to repair it yourself. All that a user who is far from electronics can do is to inspect its external integrity, whether there is any damage to the radioelements rations, whether the wiring is torn off. More detailed repair can be carried out by an electronics specialist with the necessary knowledge and instruments (oscilloscope, tester). Moreover, in case of such a breakdown, one should not go to a sewing machine workshop, but to an electronic equipment tuner.
