Motor repair for a Samsung vacuum cleaner and 3 ways to unscrew the armature fastening nut

If you have basic knowledge of electrical engineering and confidence in your abilities, you can fix a broken vacuum cleaner yourself. Most units have the same design. Only the technical specifications and design differ. Now we will talk about how to disassemble a Samsung vacuum cleaner, replace a broken motor yourself, or try to restore it.

Frequent malfunctions of Samsung vacuum cleaners

Vacuum cleaners from Korean and Chinese manufacturers have proven themselves to be reliable household electrical appliances. The cause of the malfunction after many years of operation may be hidden in the electrical part of the unit. Most often, with Samsung, the breakdown is hidden in the following nodes:

jamming or breaking of bearings;
erasing electric motor brushes;
failure of the electronic unit;
engine combustion.

Sometimes the cause of a breakdown may be a simply blown fuse on the electronic board. The part is easy to change, but this already serves as a signal of a possible more serious malfunction.

The reason for frequent shutdown of a running unit is the operation of the engine overheat protection. A simple problem lies in a clogged garbage container. The motor heats up due to overload and the protection turns it off.

The problem with the fuse and a dirty reservoir is easy to solve. In all other cases, the home assistant will have to be disassembled.

Equipment with air-water filter

A vacuum cleaner equipped with an aqua filter operates according to a single-stage filtration scheme, although it is a two-stage one. It has a container and HEPA that can be washed (reinstalled only after drying).

The air entering the dust collector, with its powerful flow, turns the liquid into a foggy cloud that instantly absorbs all the debris. In the area of the dust collector visor in front, a vortex storm allows dust to settle down to the very bottom, and residual microdust particles penetrate through a fog filter, which also works like a HEPA. Clean, dry air cools the motor and is pushed out.

Disassembling the case

The difficulty of disassembling the case lies in the presence of hidden bolts. The manufacturer hides them under buttons, covers and other parts. Repair work begins with preparing the tool. You will definitely need a set of straight and shaped screwdrivers.

Moreover, now we often see screws not for a Phillips screwdriver, but for a triangular or asterisk one. To test the wires, fuse, and switch contacts, you need a multimeter. It is advisable to have tweezers on hand for grasping small screws.

If you plan to disassemble the electric motor, you will need a bearing puller, a hammer, and a set of wrenches of sizes from 8 to 17 mm. Materials needed include Litol lubricant, WD-40 rust-corroding liquid, new bearings and brushes.

Disassembling the case begins by unscrewing all visible screws. Samsung usually doesn't hide them. The approximate location of the screws is shown in red circles in the photo, but each model may vary. If the top cover of the case cannot be removed, it means that there is still a hidden fastener somewhere. Moreover, these may not be screws, but latches on the case.

After disconnecting the top cover from the bottom of the case, do not rush to remove it abruptly. There may be wires coming from the electronic unit. To avoid breaking them, the chips are disconnected on the board. Now you can carefully remove the cover. The review includes an electric motor with wires, as well as other electrical parts located inside the lower half of the housing.

The top cover with screws is set aside so that nothing gets lost.

Preventive measures

It is better not to treat the problem, but to prevent it. This applies to everything and vacuum cleaners too. How does she look? Basic care: replace or empty the dust bag on time.

Each technique has its own weaknesses.

An important detail is the brush. Cleaning its lint should also not go unnoticed

If the vacuum cleaner is intended for dry cleaning, do not suck in water and other liquids, they will accumulate inside. This leads to breakdown.

Clean your vacuum cleaner more often to increase its shelf life.

Keep the warranty receipt after purchasing the vacuum cleaner, if you have one. Most types of breakdowns can be repaired by specialists. If it is missing or there is another type of breakdown, do not be afraid to use videos from the Internet, where craftsmen will tell you how to repair a broken Samsung vacuum cleaner with your own hands.

Replacing the electric motor

If the engine is completely out of order or it is impossible to repair it yourself, it is cheaper to buy a new engine. Electric motors from other companies are often suitable for Samsung vacuum cleaners, so there will be no problems with the purchase. The motor is usually easy to remove. If the engine does not immediately yield to being removed by hand, they look for the reason. Perhaps the manufacturer has provided additional fixation, but first things first.

After removing the top cover of some Samsung models, the motor is not immediately visible. An electronic board can be seen, screwed to a plastic box.

There is no need to unscrew the electronic unit. On the board, disconnect the chips with wires going to the engine. On the top cover of the plastic box there are four screws for a Phillips screwdriver. You need to unscrew them and remove the casing along with the board.

Under the box lid there is an electric motor enclosed in another casing. The cover is secured with four screws. After unscrewing them, you can remove the motor itself.

From using the vacuum cleaner for a long time, the impeller and the back of the motor will become clogged with dust. If, during the inspection, lying balls and pieces of the bearing cage are identified, then we can confidently speak about the rotor being jammed and the possibility of its combustion.

Finding a new anchor is difficult. If you also take into account the cost of new bearings and brushes, then it is cheaper to buy a motor that is suitable for mounting and technical parameters.

When choosing a new electric motor, take the old model as a sample. If there is a slight difference in the fastening, new holes can be drilled. The main thing is that the parameters agree and the motor fits into the vacuum cleaner body.

Assembly is carried out in reverse order. Do not forget to install a sensor on the engine to protect against overheating. During assembly, check the tight fit of all covers. If air is sucked in, the performance of the vacuum cleaner will decrease.

Dry and wet cleaning of “internals” from dust

Often the cause of a suspicious hum of a vacuum cleaner and an unpleasant odor is the accumulation of dust inside it. It is better to remove dust using “dry” methods so as not to damage the fragile electronic filling and not to disrupt the function of the conductive paths on the board. A small soft brush is suitable for cleaning. You can also use a room fan. If dust and dirt cannot be removed “dry”, after moisture has entered, all parts must be dried as quickly as possible. Plastic elements can be washed under running water. They should be put back together only after they are completely dry.

The drum and cable are easy to dry clean, as is the plastic motor housing. If the casing cannot be cleaned without using water, make sure that it does not touch the electrical circuit. You can use another vacuum cleaner with a suitable attachment as a dry cleaning tool. This is exactly how dust is removed from motor collector plates and windings. Strong air pressure cleans the board and its small parts well – even with heavy dirt.

Electric motor repair

If you decide to restore the old electric motor, lubricate or change the bearings, perform a complete disassembly.

First, unscrew the screws with a screwdriver and remove the impeller casing. Use a socket wrench to unscrew the nut. In most engines it has a left-hand thread. The impeller is pryed from opposite sides with two screwdrivers, trying to remove it from the anchor.

Unscrew the tightening screws on the body and remove the brushes. The motor will split into two parts: one will contain a stator with a copper winding, and the other half will come out with an armature and bearings.

All parts are carefully wiped off dust with a dry cloth or brush. Use a puller to remove the bearings and install new ones. If necessary, lubricants are pushed into the seat with the balls and separator. Assembly occurs in the reverse order of installing new brushes.

Lastly about electronics

It must be said that the electrical circuits of vacuum cleaners, except for the most expensive ones with microprocessors, are not particularly complex. The electrical circuit diagram of the vacuum cleaner, which can be considered close to typical, is shown in Fig. below. The network voltage in this case is 110 V. For a voltage of 220 V, the resistance of R1 is increased to 150 Ohms and its power to 2 W. R5 takes 330 kOhm, VR1 and VR2 each take 470-510 kOhm, R3 – 24 kOhm 2 W. The operating voltage of all capacitors is 630 V.

Electrical circuit diagram of a vacuum cleaner with power control

R3 sets the maximum power of the vacuum cleaner; it can be changed within 12-47 kOhm. VR1 is the operational power control, and VR2 is set to its minimum value, and here you need to be careful. The fact is that if the motor armature stops, every half-cycle of the mains voltage a starting current equal to 3-5 working currents will flow through it, and an expensive powerful triac (TRIAC according to the circuit) will burn out

Therefore, when setting up the circuit, the VR2 engine is first set to minimum resistance, then a voltage of 175 V is given from the LATR and VR2 very carefully, without overshoot, reduces the motor speed to 700-800 rpm

Thermal protection in such a circuit is also easy: a 1-1.5 MΩ thermistor (for a 220 V mains voltage) with an inverse logarithmic temperature characteristic is connected in parallel to C3. Physically, the thermistor must be in thermal contact with the motor housing, but be electrically isolated from it. A “cold” thermistor (at room temperature) does not affect the operation of the circuit, but when heated to 70-80 degrees, its resistance will drop to 1-0.5 R3, C3 will charge more slowly during the half-cycle, the low-power DIAC triac will open and open the TRIAC later , and the engine power will decrease by half or four. In approximately the same way, it is possible to modify most vacuum cleaners with power control, but without automatic protection.

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Troubleshooting other problems

If the working vacuum cleaner has weakened suction power, the cause of the malfunction is clogged filters. Moreover, cleaning the dust bag or container, as well as the foam plate behind it, will not be enough. You need to remove the filter on the exhaust of the vacuum cleaner. It is usually made of paper or artificial fiber. The filter is carefully cleaned with a dry brush. They are trying to blow it off or shake it off.

When the problem is not solved, disassemble the vacuum cleaner, remove the motor and clean the impeller. If the blades are clogged with dust, then the suction has weakened for this reason.

The vacuum cleaner does not work well due to wear on the brushes and contamination of the armature commutator. After complete disassembly of the electric motor, the conductive copper plates are cleaned with zero-grade sandpaper. New brushes are installed and the screw contacts are retightened.

The reason the vacuum cleaner does not work may be a faulty power cable or power button. The elements can be easily measured with any cheap multimeter. If testing does not give positive results, the problem is in the electronic unit. They just change it.

Problems with the electronic unit result in the inability to use the wheel to adjust the engine speed, which affects the suction force.

When the vacuum cleaner stops winding the power cable, you need to get to the drum. A common cause of failure is spring stretching. Sometimes it bursts. In the first case, the tension force is restored to the spring by unwinding or winding the wire. In the second case, they buy a new drum.

Disassembling a Samsung vacuum cleaner is scary only for the first time. After the first repair, subsequent disassemblies will occur faster.

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Prevention

Prevention of washing machine malfunctions includes proper use of the device and preventive filter checks. External ones are very important - the air entering the mechanism passes through them, and most of the contaminants accumulate on the filters and protective grille. When the grille and filter system become too dirty, dust and particulate matter can flow directly into the engine, becoming trapped and damaging components. Regular inspection and replacement of dirty filters will significantly extend the life of your device.

The vacuum cleaner works, but its speed is not regulated

In this case, what is possible is not a break inside the triac, as with a non-working vacuum cleaner, but a breakdown - the output voltage is not regulated, but is passed through itself without any control. The cause of such a malfunction may also be the loss of contact in (indicated by number 2 in the figure). Everything is simple here - replacing either a slider resistor or a triac.

Vacuum cleaner motor

As a rule, vacuum cleaner malfunctions are easy to detect, and they can almost always be eliminated. An exception may be a short circuit inside the motor windings - it is difficult to eliminate this damage by rewinding the windings due to the non-separable housing - and you have to replace the entire motor, which is also cost-effective - $25 is, after all, not 70 - 80 - exactly how much such a vacuum cleaner costs .

What's broken in the vacuum cleaner? Determine for yourself in 5 minutes. Decide what to do next, repair it yourself, take it to a workshop, buy a new one. The vacuum cleaner does not suck, smokes, burns, does not turn on, shorts out, shorts out, cuts out plugs, what should I do? How to clean a vacuum cleaner filter? (10+)

Vacuum cleaner malfunctions

Attention!

All repair, cleaning and maintenance work on the vacuum cleaner must be performed with the power cord disconnected from the mains.

Causes of defects

Cracks, tears, and punctures on the body of the vacuum cleaner hose can appear for various reasons. However, the main reason, of course, should be considered improper handling of this part.

What user actions lead to the appearance of defects on the body of the corrugated tube?

Take a closer look:

Towing a vacuum cleaner from place to place via a hose.
The tube is bent at unacceptable angles during the cleaning process.
Inaccurate use when cleaning objects with sharp edges.
Storage not according to instructions.

The natural cause of the formation of defects should also be considered the expiration of the product’s service life, wear, and poor quality of the material.

Often, violation of operating rules by owners of harvesting equipment leads to the appearance of defects on the body of the corrugated hose. When working with a vacuum cleaner, it is not recommended to use physical force directly on the hose

Towing a vacuum cleaner from place to place by pulling the device by the working hose is a fairly common practice.

At the same time, many owners of vacuum cleaners perform such “tricks” completely unaware of the impending consequences. Meanwhile, the instructions for any vacuum cleaner clearly state that you cannot do this!

Bending of the pipeline at an unacceptable angle can occur when the owner of a vacuum cleaner, in the heat of cleaning, seeks to reach areas that are theoretically inaccessible due to the operational and technical parameters of the cleaning equipment.

This bending of the corrugated sleeve contributes to the rapid appearance of a crack or rupture. Therefore, manipulations with the hose during vacuuming should avoid bending the corrugation at steep angles

Several times such attempts can end quite successfully. However, the strength of the material with respect to unacceptable loads is not unlimited. Therefore, at the most inopportune moment, the pipeline will simply burst in the place where there was an unacceptable bend.

Cleaning work can be carried out under different conditions. For example, when cleaning furniture whose frame has metal parts with sharp edges

If the hose is handled carelessly under such conditions, there are all the prerequisites for cuts to appear on the body of the corrugation.

Finally, the rules for storing cleaning equipment, specifically described in the vacuum cleaner instructions, also cannot be violated, since violation here is one of the reasons for the malfunction of the vacuum cleaner hose.

The storage conditions of household cleaning equipment accessories directly affect the quality of the material from which the same working hose is made. Therefore, violations of storage rules contribute to the appearance of defects

Thus, storing the device together with accessories, or separately accessories, at a temperature below the recommended one leads to a decrease in the strength of the corrugated tube material.

Sudden temperature changes, loaded conditions, and unacceptable bends are also critical for the hose material.

Required Tools

The set of tools needed will depend on the type and model of Samsung vacuum cleaner. When disassembling and repairing, preventing or cleaning the device, as well as its individual elements, you cannot do without the following devices:

Phillips and slotted screwdrivers - their sizes are selected in accordance with the type and depth of the screws;
pliers;
a stationery knife, or better yet a professional construction knife;
lubricant;
electrical insulating tape;
electrical tester.

The type of work performed will largely influence the choice of tools. For example, to clean the surface of a suction hose before gluing cracks, you will need sandpaper and a degreaser (acetone, solvent). It is convenient to remove dirt on the shaft of the vacuum cleaner brushes with scissors, but to remove blockages you will have to use a long, stiff wire. For gluing cracks or chips on the body, universal super glue is suitable, but for moving parts, such as a hose, a more elastic adhesive material is needed.