Refrigerator compressor replacement technology. Replacing a Compressor in Refrigeration After preparing the necessary tools

The motor-compressor is the "heart" of the refrigerator, one of its main parts. Unfortunately, motor failures are not uncommon. He suffers from time, and from power surges, and from too intense work. A faulty motor cannot be repaired (except in the case of jamming), therefore, in the event of a breakdown, it is replaced with a new one. Installing the motor is not an easy task, which, in addition to “removed and installed”, requires the system to be evacuated and refilled with freon. You can't deal with it on your own. Entrust the replacement of the compressor to the specialists of RemBytTekh, and they will promptly perform the work - within 24 hours after receiving the application!

Refrigerator compressor replacement prices

The cost of replacing the motor is from 1900 rubles depending on the brand and model of the refrigerator. This includes only the work of a specialist, a new motor and filter drier are paid extra.

*Prices are indicative. The master will be able to name the exact amount after a complete diagnosis of the refrigerator.

Compressor replacement procedure

• Dismantling a faulty motor-compressor. The master will cut and break off the filling tube through which the system is filled with freon. This tube will be needed for the new compressor. Then, at a distance of 20-30 mm from the filter-drier, cut off the capillary tube so that freon leaves the system. After the refrigerant evaporates, the master removes (or cuts off) the suction and suction tubes from the faulty motor, they are soldered at a distance of about 10-20 mm from the compressor. Next, it remains to unscrew the motor mounts to the refrigerator body and remove the motor.
• Mounting a new motor. The master will fix the motor in the housing and dock all the pipes of the refrigerator (suction, suction and filling) with the corresponding pipes on the compressor. Then solder the joints of the tubes with the motor.
• Replacement filter drier. The third stage changes the zeolite cartridge, which is also a filter drier. The master will desolder or cut off the old one and solder the new one. The filter drier is a small but very important detail. It prevents small particles and moisture from entering the capillary tube, which can damage the refrigerator. The filter drier must be changed each time the refrigerator cooling system is opened. Its cost in relation to the total cost of repairs is low. But keeping the old part in place can significantly reduce the life of the new compressor.
• Vacuum system. After sealing all the seams with the help of a special pump, the master will evacuate the refrigerator, during which excess moisture is removed from the system.
• Filling the refrigerator with refrigerant. When refueling, the master will also check the tightness of the soldering of all connections.

After that, it remains only to return the refrigerator to its place, turn it on and enjoy the proper operation of your refrigeration unit!

Benefits for you

• Free departure of the master. If you agree to carry out repairs by RemBytTech specialists, you will not have to pay for the master's visit to the house.
• Home repair. In most cases, our experts will replace the compressor right at your home, and you do not have to take the faulty refrigerator to the repair shop.
• Convenient work schedule. We work for you from 8 am to 10 pm even on holidays and weekends. The master will arrive at any time convenient for you.
• Warranty up to 2 years. We offer a 2-year warranty on our workmanship.

How to determine that the motor-compressor of the refrigerator is out of order?

A broken compressor motor is one of the most serious problems that can occur in a refrigerator. However, do not be upset - because perhaps the reason for the failure of the unit lies in a completely different problem. The following are signs that may signal a compressor failure:

• Motor not running because it is burned out, the refrigerator is warm, but the light is on.
• Refrigerator turns on and off immediately, inside the refrigerator is warm. In this case, there was a break in the compressor winding, an interturn circuit, or the motor simply “wedges”.
• A rare symptom of a broken motor - fridge running non-stop without turning off, while the temperature inside the refrigerator is slightly increased. Typical for compressors with a long service life. Due to wear, the motor cannot build up enough pressure in the discharge tube to lower the temperature to the required value, even though it is constantly running.

Whatever the symptoms of a problem with your refrigerator, don't guess. It is better to immediately contact the specialists of "RemBytTech":

7 (495) 215 – 14 – 41

7 (903) 722 – 17 – 03

After a thorough diagnosis of the unit, they will establish the exact cause of its breakdown and quickly and with a guarantee will make repairs.

Contact us!

• Read more:

The motor-compressor is the "heart" of the refrigerator, one of its main parts. Unfortunately, motor failures are not uncommon. He suffers from time, and from power surges, and from too intense work. It is possible to repair this part, but as a rule, repairs are extremely expensive, painstaking and cannot guarantee that the breakdown will not occur again. Therefore, if the compressor breaks down, it is usually replaced with a new one. Installing the motor is not an easy task, which, in addition to “removed and installed”, requires the system to be evacuated and refilled with freon. You can't deal with it on your own. Entrust the replacement of the compressor to the specialists of RemBytTekh, and they will promptly perform the work - within 24 hours after receiving the application!

Compressor replacement procedure

• Dismantling a faulty motor-compressor. The master will cut and break off the filling tube through which the system is filled with freon. This tube will be needed for the new compressor. Then, at a distance of 20-30 mm from the filter-drier, cut off the capillary tube so that freon leaves the system. After the refrigerant evaporates, the master removes (or cuts off) the suction and suction tubes from the faulty motor, they are soldered at a distance of about 10-20 mm from the compressor. Next, it remains to unscrew the motor mounts to the refrigerator body and remove the motor.
• Replacement filter drier. The third stage changes the zeolite cartridge, which is also a filter drier. The master will desolder or cut off the old one and solder the new one. The filter drier is a small but very important detail. It prevents small particles and moisture from entering the capillary tube, which can damage the refrigerator. The filter drier must be changed each time the refrigerator cooling system is opened. Its cost in relation to the total cost of repairs is low. But keeping the old part in place can significantly reduce the life of the new compressor.
• Installation of a new motor. The master will fix the motor in the housing and dock all the pipes of the refrigerator (suction, suction and filling) with the corresponding pipes on the compressor. Then solder the joints of the tubes with the motor.
• Vacuuming the system. After sealing all the seams with the help of a special pump, the master will evacuate the refrigerator, during which excess moisture is removed from the system.
• Filling the refrigerator with refrigerant. When refueling, the master will also check the tightness of the soldering of all connections.

Dear Clients! All your questions are answered by our master on duty. By calling us, you will immediately receive professional advice on a defect in the operation of the refrigerator.

Attention! From June 10, 2016, our service center introduces a new, flexible system of discounts for both pensioners and low-income citizens, as well as for ordinary customers. The amount of the discount depends on the type of repair and can reach 10%. Contact us! All special offers

Dear Clients! Be careful! Today, the total minimum cost of replacing a motor-compressor cannot be less than 6000-00 rubles. Nobody will work at a loss. If you are offered to replace the refrigerator motor-compressor for a smaller amount, you should think about it.

We all want to get a good result for minimal money. But think about how often you are lucky to get a quality product or service for a meager price? When choosing a refrigerator repair service, always remember where the free cheese is.

Replacing the compressor (motor) of the refrigerator is a complex and time-consuming process. Work on its replacement refers to a complex (major) repair. In order to replace the compressor (motor), you must first remove the refrigerant from the refrigeration unit, then replace the compressor (motor) itself and the starting relay, while during the repair process it may be necessary to replace some other worn-out components. After carrying out the above operations, the tightness of the system is restored using high-temperature soldering. Then the system is freed from air and charged with a certain amount of a specific brand of refrigerant.

How much does it cost to replace a refrigerator compressor?

Minimum total the cost of replacing the compressor of the refrigeration unit in our service center - 7500 rub . The price depends on both the brand and the model of the refrigerator.

Below is the estimated cost of replacing the compressor of freestanding refrigerators of the most common brands.

Once again, we would like to draw your attention to the fact that estimated cost. Only the foreman or duty engineer (senior foreman) will be able to name the exact cost of replacing the compressor with your refrigerator model upon approval of the order.

Owners of refrigerators Samsung, Electrolux, Liebherr, LG, Bosch and other high-tech brands should be aware that an inverter compressor may be installed on their refrigeration units. The cost of replacing an inverter compressor is significantly different from the usual one. The minimum purchase price of such a compressor is $180.

In the photo below: inverter motor-compressor. As you can see outwardly, it is no different from piston crank or crank-rocker motor-compressors installed on the vast majority of refrigerators. To determine the inverter or conventional compressor (motor) installed on your refrigerator, as a rule, it is possible only after the diagnostics or by the serial number, product code of the unit.

Refrigerator compressor replacement - a job for a professional

You can repair the refrigerator yourself, but for this you need to have certain skills and knowledge. An important part of the preparation for the repair is diagnostics, and for this you need to know the principle of operation of the refrigerator. Let's try to figure out how the scheme of operation of this common household device is organized.

Refrigerator operation scheme

The refrigerator can be divided into three large components. The failure of one unit makes the entire refrigerator inoperable, but does not affect the working condition of other elements. The freezer consists of an evaporator, a condenser and a compressor. The compressor includes a relay and a motor.

The system of work is closed. The refrigerant is pumped out of the evaporator by means of a compressor, and then supplied by it under high pressure to the condenser. In the condenser, it undergoes cooling, which promotes the transition from a gaseous state to a liquid state, and then again moves to the evaporator, draining naturally. So the work is repeated continuously.

Unlike other components, the compressor is not constantly on. It comes into operation by a signal from the temperature sensor when the temperature in the refrigerator exceeds the permissible limit. In this case, the relay drives the motor, as a result of which the compressor begins to perform its working function. When the temperature begins to correspond to the norm, the relay turns off.

The first external sign of a compressor malfunction is an increase in temperature in the refrigerator compartment, up to its defrosting. Before you start repairing the compressor with your own hands, you need to figure out what exactly the malfunction of this device is. Getting to the compressor is not so easy - it is hermetically sealed by a casing, where it is in oil.

Most compressors have a similar device. The main components are the motor and the starting relay. The relay closes when a signal is received from the sensor and starts the motor. If the motor does not start, then the system is not functioning. In most cases, the problem with an idle compressor lies precisely in the motor. In such a situation, it is required to install a new motor, a complete replacement of the refrigerator compressor is needed a little less often. Let's analyze the cases when it is easiest to repair and replace the refrigerator compressor.

Current and resistance test

The cause of the malfunction can be a cable, it is not so rare that a banal break becomes a source of serious problems. Replacing the cable is the easiest situation to repair. In any case, before starting any work with your own hands, you need to check the current and resistance so as not to get injured.

To check the resistance, you need to find a place without paint or wipe it off a little with your own hands. Attach a multimeter to the contact and to the case, the device should not show any values, otherwise it is quite dangerous to continue repairing the refrigerator compressor with your own hands. When working with the motor and the starting relay, precautions must be observed.

To check the current, you need a working relay, that is, before starting the tests, you must be sure that it is working. It is most convenient to check the current with a multimeter, where the contact is made with tongs. With an engine power of 140 W, the current is 1.3 amperes. The ratio of values ​​remains the same for other indicators of engine power.

All malfunctions in the operation of the device can be divided into two types. In the first case, everything works well at first glance, that is, the motor is buzzing, the light is on. The reason may be a refrigerant leak, it is quite easy to check this with your own hands. It is enough to touch the capacitor, it should be very hot. In the event of a refrigerant leak, the condenser will be at room temperature. The second common cause is a breakdown of the thermostat, that is, a signal about an increase in temperature simply does not arrive.

If the refrigerator does not turn on at all, then in 20% of cases the problem comes down to a motor breakdown. If the motor is working, but it is necessary to repair the refrigerator compressor with your own hands, you need to sequentially check the main elements - the temperature sensor and the relay. Each device should be replaced if it breaks down. If everything works well, you need to change the compressor itself, we will tell you how to do it yourself.

How to replace the compressor?

To repair the compressor with your own hands, you need to prepare the appropriate tools:

• freon storage;
• valves for piercing and selection;
• burner.

The compressor must be pulled out and slightly lifted and the filling pipe broken. The device starts for five minutes, during which the freon completely passes into the condenser. A piercing valve is connected to which a hose from the cylinder is connected. The valve is unscrewed for 30 seconds, this time is enough to collect all the gas.

Instead of a filling pipe, it is necessary to solder a copper pipe, it is for this purpose that a burner is used, but you can also use an ordinary soldering iron. Then, an incision several centimeters long is made on the capillary expander, then the tube breaks, and the filter is soldered from the condenser.

Now you need to completely disconnect the compressor from the pipes (most often there are two of them - to pressurize and suck out excess gas), that is, the compressor must be unsoldered. To install a new compressor, you must repeat all the steps in reverse order. After all work, make sure that the relay works. If the launch was successful, then everything was done correctly.

Having made a step-by-step diagnosis of your Atlanta, have you established that the cause of the breakdown is in the compressor?

We remember physics

From the school physics course, we know about the structure of the internal combustion engine. The compressor functions in a similar way. The scheme of his work for Indesit or Atlanta is the same. The piston and valve system compresses freon, sending the heated refrigerant to the condenser. There it passes into a liquid state, enters the capillary expander. The compressor compresses the freon, then cools the gas in the condenser, ensuring its circulation in the refrigeration system. The process has a continuous cyclic character. The compressor is switched off, turning on from time to time to perform the function of compressing the refrigerant.

What kind of refrigerator do you have - the Belarusian Atlant or the Indesit assembled according to the Italian patent, they all have the same motor, a similar arrangement of internal circuits. In Atlanta and Indesit, reciprocating compressors are used. The piston compressor is equipped with a vertical shaft electric motor. The design is isolated by a hermetic casing. The turned on motor starts the crankshaft, which, rotating, moves the piston. The refrigerant is pumped out of the evaporator by the piston and forced into the condenser.

Where to start replacing the refrigerator compressor with your own hands

Repair of refrigerators and replacement of the compressor can be done independently by establishing the cause of the malfunction. If the compressor heats up after being connected to the network, the thermostat relay is most likely out of order. Replacing the refrigerator compressor relay is carried out even by an amateur. Does the motor suddenly turn off when you start the refrigerator for no reason? Refrigerator compressor motor replacement is best left to the professionals.

But you can try to replace the compressor entirely.

What you need

Check out the video and photo of the step-by-step process of replacing the refrigerator compressor with your own hands.

Then prepare the necessary tool:

• oxygen-propane burner;
• two valves: for piercing and refrigerant withdrawal;
• leak detector;
• thermometer electronic;
• small pipe cutter
• filter dryer:
• copper tube 6 mm;
• solder;
• flux;
• clamping pliers;
• Hansen coupling;
• charging cylinder;
• freon storage tank;
• new compressor.

Observe security measures. Do not start work when the device is turned on. Repair equipment must be grounded. Work is done with gas - the room should be well ventilated. Free the refrigerator so that you can easily lift and turn it.

Work process

When replacing the compressor of the Atlant refrigerator or any other refrigeration device, the compressor must be slightly extended. Raising it, break off the tube filling the freon, having previously cut it with a file.

Then you need to release the gas. Turn on the refrigerator for no more than 5 minutes. The refrigerant will move to the condenser. Attach the piercing valve with the cylinder hose connected to it, unscrew it for 30 seconds. The gas will collect in a container.

Solder a copper tube in place of the broken tube. A gas burner is used here, in the absence of a burner, a soldering iron is suitable. An incision of several centimeters is made on the capillary expander in order to break off the tube and unsolder the filter from the condenser. The compressor is connected to the refrigeration unit with two tubes (one for pressurizing, the other for removing excess gas).

It must be soldered from these tubes or cut off with a pipe cutter. The filter drier is cut off at a distance of 15 mm from the condenser. Remove the start relay. Dismantle the compressor and remove it from the refrigeration cabinet. Before brazing a new compressor, clean the piping.

When installing a new compressor, all steps are repeated in reverse order:

1. place the compressor in the refrigerator, fixing it on the traverse;
2. plugs on the nozzles must be removed;
3. it is important to depressurize the unit 5 minutes before soldering;
4. when removing the plugs, check that there is no excess air pressure in the compressor (this will be indicated by the noise of the outgoing air;
5. gradually connect the discharge, suction and filling tubes to the compressor nozzles, the filling tube must be 6 mm in diameter and 60 mm long;
6. start soldering the seams on the tubes, adhering to the following sequence: filling, suction, discharge, make sure that the burner flame does not go inside the compressor nozzle;
7. after removing the plugs from the filter-drier, attach it to the condenser, connect the capillary tube to it;
8. solder the filter at the seams;
9. and put on the valve half-coupling of the filling pipe;
10. check the quality of the soldering of all seams, they should be smooth, without soldered spaces;
11. refuel with freon by connecting a vacuum filling station to the coupling and removing moisture from the system;
12. mount the start-up relay on the compressor by connecting the electrical wires;
13. turn on the refrigerator, fill the system with freon, leave for 5 minutes;
14. use a leak detector to check if the tightness of the seams is broken;
15. perform a secondary evacuation of the refrigerator, leave it to work for 20 minutes;
16. pinch the filling tube, remove the coupling, solder the tube.

Results

Your refrigerator is ready to go, start the engine. After that, you need to check the functioning of the relay. If it starts, then you have completed the task.

Having gained a positive experience with your own hands, you can now give advice if one of your relatives or friends has a similar problem. And in difficult times, you can earn extra money by performing the operation to repair the refrigeration unit, which is no longer difficult for you.