How to install a new compressor on a refrigerator. Refrigerator compressor repair and replacement: features and recommendations

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

Remembering physics

From the school physics course, we know about the structure of an internal combustion engine. The compressor functions in a similar way. The scheme of his work for Indesite or Atlanta is the same. A piston and valve system compresses the freon, sending the heated refrigerant to the condenser. There it turns into a liquid state, enters the capillary expander. The compressor compresses the freon, then cools the gas in the condenser, allowing it to circulate in the refrigeration system. The process is continuous and cyclical. The compressor shuts down, including from time to time to perform the refrigerant compression function.

What kind of refrigerator do you have - a Belarusian Atlant or one assembled according to the Italian patent Indesit, they all have the same motor, a similar arrangement of internal circuits. Reciprocating compressors are used in Atlanta and Indesite. The piston compressor is equipped with a vertical shaft electric motor. The structure is insulated with a sealed casing. The included motor starts the crankshaft, which rotates and moves the piston. The refrigerant is pumped out of the evaporator by the piston and pumped into the condenser.

How to start replacing a refrigerator compressor with your own hands

Repair of refrigerators and replacement of the compressor can be done by yourself, having established 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 for no reason when the refrigerator is started? It is better to leave the replacement of the refrigerator compressor motor to professionals.

But you can try to replace the entire compressor.

What is needed

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 withdrawing refrigerant;
  • leak detector;
  • electronic thermometer;
  • small pipe cutter;
  • filter drier:
  • copper tube 6 mm;
  • solder;
  • flux;
  • pinch pliers;
  • Hansen clutch;
  • charging cylinder;
  • storage tank for freon;
  • new compressor.

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

Work process

When replacing the compressor of the Atlant refrigerator, any other refrigeration device, it is necessary to slightly extend the compressor. Having lifted 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 a hose connected to it from the cylinder, unscrew it for 30 seconds. The gas will collect in a container.

Solder copper in place of the broken tube. A gas torch is used here, in the absence of a torch, a soldering iron will do. An incision is made on the capillary expander a few centimeters in order to break off the tube and unsolder the filter from the condenser. The compressor is connected to the refrigeration unit with two pipes (one for pressure build-up, the other for removing excess gas).

It needs to be unsoldered 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 starter relay. Dismantle the compressor and remove it from the refrigerator. Strip the piping before brazing the new compressor.

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

  1. place the compressor in the refrigerator, securing it to the traverse;
  2. the plugs on the pipes must be removed;
  3. it is important to depressurize the unit 5 minutes before the start of 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. connect the discharge, suction and filling pipes to the compressor nozzles in stages, the filling pipe must be 6 mm in diameter and 60 mm long;
  6. start soldering the seams on the pipes, adhering to the following sequence: filling, suction, injection, make sure that the burner flame does not go into the compressor branch pipe;
  7. after removing the plugs from the filter drier, attach it to the condenser, connect the capillary tube to it;
  8. solder the filter along the seams;
  9. and put on the valve coupling half of the filling pipe;
  10. check the quality of the soldering of all seams, they should be smooth, without unsoldered spaces;
  11. fill with freon by connecting a vacuum filling station to the coupling and removing moisture from the system;
  12. fix 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. check with a leak detector if the tightness of the seams is not broken;
  15. perform a secondary evacuation of the refrigerator, leave to work for 20 minutes;
  16. squeeze the filling pipe, remove the coupling, solder the pipe.


Outcomes

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

Having acquired a positive experience with your own hands, you can now give advice if a similar problem arises from someone from your relatives or friends. And in difficult times, you can earn extra money by performing the now not difficult operation for you to repair the refrigerator.

The cost is for informational purposes only and consists of the price of the compressor, the cost of consumables and work; in the case of air conditioners, work on dismantling and installing the external unit is added.

The main criteria on which the price depends are the cost of the equipment itself, its brand, type and capacity.

In which devices the compressors are changed:

  • Air conditioners
  • Ice makers
  • Dehumidifiers
  • Refrigerators
  • Freezers
  • VRV and VRF systems
  • Chillers
  • Rooftops
  • Refrigerators
  • Freeze Dryers

Replacing compressors in the refrigerator

In refrigerators, in the overwhelming majority, low-power reciprocating non-inverter compressors in a sealed case are used. The cost of such compressors is low, as is the time required to replace them - about 40 minutes, along with all the work.

But recently, the number of inverter compressors (with electronic control) and linear compressors (for LG products) has been increasing, the cost of such compressors is higher than usual.

Replacing the compressor in the air conditioner

The main type of compressors used in air conditioners are hermetic rotary compressors with a capacity of 2.0 - 14.0 kW. The control type is not inverter in earlier models and inverter in recent models. Also a large percentage of scroll compressors.

The peculiarity of replacing a compressor in an air conditioner is the need to dismantle the external unit with its subsequent installation in its original place, which increases the cost. Otherwise, all work is the same as on other refrigeration equipment.

Replacing the compressor in dryers

The dryers use medium and high temperature reciprocating and rotary compressors.

Scroll compressors are also used in powerful installations.

Compressor replacement work

When replacing, the following work is carried out:

  • Diagnostics
  • Refrigerant evacuation
  • Dismantling the compressor
  • Flushing the system
  • Compressor soldering
  • Soldering filters
  • Refrigerant charge
  • Additive to the refrigeration circuit of anti-acid additives
  • System start

Compressor selection

There are two ways to resolve the issue with the selection of a compressor - to purchase an original compressor or its functional analogue.

The first case is the simplest, since in this case it will fit exactly and there will be no problems with adaptation - fitting fasteners, soldering adapter couplings to the suction and discharge lines of the compressor, eliminating problems with excessive vibration, etc.

But this is not always possible for a number of reasons - the termination of the production of these products, the limitation of the work budget or a long delivery time in the event of an urgent repair work.

In this case, it is quite possible to choose a similar compressor of a different type and manufacturer, and a better analogue may be cheaper than the original.

Main characteristics for selection:

  • compressor power
  • type of refrigerant (freon)
  • dimensions

Compressor protection measures

To prevent a new compressor from failing, it is imperative to protect it. For this, anti-acid filters, filter driers are installed, anti-acid additives are added.

It is also necessary to eliminate all the reasons that led to the failure of the compressor, if they were:

  • Eliminate freon leaks
  • Install the crankcase heater
  • Install oil lifting hinges
  • Establish an oil return to the compressor
  • Install undervoltage protection

The motor-compressor is the "heart" of the refrigerator, one of its main parts. Unfortunately, engine breakdowns are not uncommon. He suffers from time, and from surges, and from too intense work. It is possible to repair this part, but as a rule, the repair is extremely expensive, painstaking and cannot guarantee that the breakdown will not occur again. Therefore, if a 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 set", requires evacuating the system and filling it with freon. You cannot cope with it on your own. Entrust the replacement of the compressor to the specialists of "RemBytTech", and they will promptly perform the work - within 24 hours after receiving the application!

Compressor replacement procedure

  • Dismantling the defective motor-compressor. The master will cut and break off the filling tube through which the system is filled with freon. You will need this tube for a new compressor. Then, at a distance of 20-30 mm from the filter-drier, he will cut off the capillary tube so that freon will escape from the system. After the refrigerant has evaporated, the master evaporates (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.
  • Replacing the filter drier. The third stage is changing the zeolite cartridge, it is also a filter drier. The craftsman will either unsolder 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 could damage the refrigerator. The filter drier must be changed every time the refrigeration system of the refrigerator is opened. Its cost in relation to the total cost of repairs is low. Keeping an old part in place, however, can significantly reduce the operating time of a new compressor.
  • Installation of a new motor. The wizard will fix the motor in the housing and fit all the tubes of the refrigerator (suction, suction and filling) with the corresponding nozzles on the compressor. Then he will solder the joints of the tubes to the motor.
  • System evacuation. After sealing all the seams using a special pump, the master will vacuum 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 joints.

The motor-compressor is the "heart" of the refrigerator, one of its main parts. Unfortunately, engine breakdowns are not uncommon. He suffers from time, and from surges, and from too intense work. A defective motor cannot be repaired (except in the case of jamming), therefore, if it breaks down, it is replaced with a new one. Installing the motor is not an easy task, which, in addition to "removed and set", requires evacuating the system and refueling it with freon. You cannot cope with it on your own. Entrust the replacement of the compressor to the specialists of "RemBytTech", 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 additionally.

Refrigerator brand Replacement cost *
(only work)
Departure of the master Is free
Refrigerator Indesit from 2400 rub.
Refrigerator Stinol from 2400 rub.
Samsung refrigerator from 3400 rub.
Refrigerator Atlant from 2900 rub.
Refrigerator Bosch from 3400 rub.
Refrigerator Ariston from 2900 rub.
Refrigerator LG from 3400 rub.
Refrigerator Vestfrost from 3600 rub.
Refrigerator Liebherr from 3500 rub.
Refrigerator Electrolux from 3400 rub.
Refrigerator BEKO from 3200 rub.
Refrigerator Biryusa from 2900 rub.
Sharp refrigerator from 4400 rub.
Whirlpool refrigerator from 3700 rub.
Refrigerator Siemens from 3700 rub.
Refrigerator AEG from 3800 rub.
Other brand from 1900 rub.

* Prices are approximate. The exact amount can be called by the master after a complete diagnosis of the refrigerator.

Compressor replacement procedure

  • Dismantling the defective motor-compressor. The master will cut and break off the filling tube through which the system is filled with freon. You will need this tube for a new compressor. Then, at a distance of 20-30 mm from the filter-drier, he will cut off the capillary tube so that freon will escape from the system. After the refrigerant has evaporated, the master will remove (or cut off) the suction and suction tubes from the faulty motor (or cut off), 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.
  • Installing a new motor... The wizard will fix the motor in the housing and fit all the tubes of the refrigerator (suction, suction and filling) with the corresponding nozzles on the compressor. Then he will solder the joints of the tubes to the motor.
  • Replacing the filter drier. The third stage is changing the zeolite cartridge, which is also a filter drier. The craftsman will either unsolder 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 could damage the refrigerator. The filter drier must be changed every time the refrigeration system of the refrigerator is opened. Its cost in relation to the total cost of repairs is low. Keeping an old part in place, however, can significantly reduce the operating time of a new compressor.
  • System evacuation... After sealing all the seams using a special pump, the master will vacuum 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 joints.


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

Benefits for you

  • Free visit of the master. If you agree to carry out repairs by the specialists of "RemBytTech" you will not have to pay for the visit of the master to the house.
  • Home repair. In most cases, our specialists will replace the compressor right at your home, and you will not have to take the defective 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 come at any time convenient for you.
  • Up to 2 years warranty. We give a guarantee for the work done by our craftsmen up to 2 years.

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

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

  • Motor does not work because it is burnt out, the refrigerator is warm, but the light is on.
  • The refrigerator turns on and off immediately, the inside of the refrigerator is warm. In this case, there was a break in the winding of the compressor, an interturn short circuit, or the motor simply "wedges".
  • A rare symptom of a motor breakdown - the refrigerator works without interruption without switching off, while the temperature inside the refrigerator is slightly increased. Typical for compressors with a long service life. Due to wear, the motor cannot create sufficient pressure in the discharge tube, and lower the temperature to the required value, even despite constant operation.

Whatever the symptoms of your refrigerator malfunctioning, don't be guessing. 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!

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In the event of a breakdown of the motor-compressor, a foreman is called to replace the part. In this case, many are confused by the cost issue - the compressor itself is not cheap, and you also need to pay for repairs, the price of which can be several thousand rubles. If you manage to replace the motor yourself, it is enough to find out how much a new compressor costs and not overpay for repairs. Armed with detailed instructions and the necessary tools, you can temporarily become a repairman for your own refrigerator.

We will describe below how the motor-compressor and the oil in it are replaced.

To replace a motor, you need to thoroughly know the principle of the refrigerator, be able to correctly diagnose a breakdown, paying attention to the signs. Before work, familiarize yourself with the device, the main causes of engine breakdown and their symptoms.

It can be roughly divided into three main parts:

  • evaporator;
  • capacitor;
  • compressor (consists of a motor and a relay).

If one of them does not function, and the rest of the units are in good order, the refrigerator's performance is still lost.

The system is characterized by closed parameters. Freon is pumped from the evaporator by the compressor, after which it passes under high pressure to the condenser, where it is cooled, from gas it becomes a liquid and goes back to the evaporator. This is a continuous cycle of refrigeration equipment.

Unlike other parts, the motor is always on. It starts after a signal from the temperature sensor, which reports an increase in temperature in the chambers. The relay starts the motor to start cooling the compartments. When the set temperature is reached, the relay is triggered and the motor stalls.

The first sign by which you can determine a breakdown is a temperature jump in the main chamber. It can be so warm in there that all food will go bad. There are other signs of failure of the main part of the refrigerator:

  • ice has grown on the walls (especially important for models with the No Frost function);

  • the motor is humming, but it does not produce cold, there is no refrigerant leakage;
  • clicks, rattling and other extraneous sounds are heard: noise, grinding, vibration.
  • the motor runs constantly, without stopping;
  • the food in the chambers is over-freezing.

Sometimes a cable or a broken wiring is to blame for a breakdown, so before starting repair work, you need to measure the resistance in order to protect yourself from injury.

To test the resistance, look for a spot that is free of paint. If there are no such spots, wipe off the coating with solvent. Take the tester and place its test leads to the body and contact. If nothing is displayed, then the device is working properly, and if there are numbers on the multimeter screen, it is very dangerous to repair the compressor at home. If you decide to work with such a compressor, be extremely careful.

To check the current, make sure the start relay is working. Take a multimeter with clamps - it is more convenient to check with such a device. If the motor power is, for example, 140 W, the meter should show a current of 1.3 A. The ratio of these indicators is the same if the motor power is different.

Breakdowns can be attributed to two groups:

  • At first glance, everything works fine - the compressor is humming, the light is on. In this case, a refrigerant leak may be relevant, and you can check it yourself - touch the condenser. If it's hot, then there really is a leak.

  • The temperature regulator is broken, therefore, if it is warm in the chamber, there is no signal about it.

If the technique does not work at all, in every fifth case the motor is to blame. If this is not the case, it is worth checking the relay and temperature sensor. If they fail, they must be replaced. If no malfunctions of parts are found, the motor is to blame, and it needs to be replaced.

It is difficult to replace this part without the help of a master, but it is possible. Read on how to do this.

Before starting work, prepare the toolkit:

  • storage for freon gas;
  • valves (needed for puncture and selection);
  • burner.

Important! It is worth giving preference to an oxygen-propane burner.

To replace the compressor in the Ariston, Indesit, Atlant, Stinol or any other refrigerator, proceed as follows:


Watch the video to get it right:

How is the oil change in the compressor

If, after replacing the compressor or relay, it turns out that there is not enough oil in the system, then you need to replace or top up it. Before draining, changing or refilling oil, you should consult with an experienced master.

When else do you need an oil fill? We decided to consider this issue within the framework of this publication, because there are cases when oil is not filled in a new engine, then you will have to do it yourself.

Important! If the compressor does not turn off after replacement, the filling technology has been violated. Strictly follow the instructions when working with technical fluids.

  1. A container with new oil must not be opened until it is used.
  2. Buy liquid in a container of such a volume that it is enough for one refueling, otherwise you will have to interrupt the process and buy more.
  3. Do not transfer oil from one bottle to another or mix oils of even the same brand.
  4. When removing waste oil, work using PPE - safety goggles, rubber or neoprene gloves. This is due to the fact that the oil may contain acidic impurities.
  5. To understand how much oil is needed for an old compressor, focus on the amount of fluid drained.

What you need:

  • Vacuum pump;
  • filling hose with shut-off valve and screw connection;
  • pressure gauge.

Replacement process

  1. Vacuum the system.
  2. Close the service valves on the motor.
  3. Connect a vacuum pump to one of the valves.
  4. Reduce compressor pressure to minimum (approx. 0.1 bar). Stop the pump.
  5. Unscrew the oil plug on the compressor and screw on the charge hose with shut-off valve.
  6. Open the suction valve and run the freon into the compressor to slightly increase the pressure. Close the valve.
  7. Open the shutoff valve on the charge hose to bleed air.
  8. Open a can of oil and immerse the end of the hose in the container so that it reaches the bottom.
  9. Close the shut-off valve. Start the vacuum pump again.
  10. After the pressure in the motor is below atmospheric pressure, carefully unscrew the shut-off valve. You can now fill the compressor with oil.
  11. To determine its level, observe the filling through the sight glass on the motor.
  12. Close the shut-off valve.
  13. Stop the pump and apply a slight positive pressure by adjusting the opening of the suction valve.
  14. Remove the filling hose. Screw on the oil plug.

The video below will help you better understand the refueling process:

This filling method ensures that there is no moisture and air in the system. There is a possibility of a minor refrigerant leak, which can be replenished with the right tools.

Important! During refueling, make sure that the container with the oily liquid does not empty to the bottom, otherwise air will enter the system. If the precedent occurs, the oil filler plug is closed and the system is evacuated.

If oil needs to be added, this is easier. Use for this purpose oil syringe. Do not be afraid that air will enter the system when you open the oil plug, this is impossible.

If you have an oil pump, then use it - it doses the oil charge without reference to the pressure in the engine.

How long does the refrigerator work after replacing the compressor? It all depends on the thoroughness and accuracy of your work. If your Liebherr, Samsung or any other refrigerator is broken, you know how to replace the compressor and refill the oil. If this work seems difficult to you, do not take risks and call a mechanic.