How to properly remove the compressor from the refrigerator: from preparation to dismantling

Dismantling a refrigerator compressor is a task faced during major repairs, replacing freon, or recycling equipment. Many users are afraid to take on this work themselves, considering it too difficult or dangerous. However, with the right approach and compliance with safety precautions remove the compressor it is possible even without special education. The main thing is to understand the structure of the system, have the necessary tools at hand and strictly follow the algorithm.

This article will help you understand the nuances of the process: from preparing the workplace to finishing operations with sealing the tubes. We will look at the features of working with different types of refrigerators (single-chamber, double-chamber, inverter), pay attention to typical mistakes and give practical advice that will save time and nerves. If you have never repaired refrigeration equipment, start with the theoretical part - this will save you from annoying miscalculations.

⚠️ Warning: Working with refrigerants and sealed systems requires compliance with environmental standards. In most countries drain freon yourself it is prohibited without a license - there are fines for this. Check with your local environmental regulations or contact a service center for professional refrigerant disposal.

1. Preparing for dismantling: tools and safety precautions

Before you begin removing the compressor, make sure that you have everything you need. Missing even one tool can slow down the process or damage parts. Here basic setwhich will be needed in 90% of cases:

• 🔧 Set of wrenches (keys of 8, 10, 12 and 14 mm are required - standard sizes for compressor mounts)
• 🔨 Screwdrivers (flat and Phillips, preferably with a magnetic tip)
• 🛠️ Pipe cutter or hacksaw for metal (for cutting copper tubes)
• 🧲 Blowtorch or hair dryer (for heating solder)
• 🧤 Safety gloves and glasses (required! the compressor may be contaminated with oil or refrigerant)
• 📏 Refrigerant pressure gauge or manifold (if you plan to store freon)

Also prepare your work space. The refrigerator should be placed on a flat surface, preferably in a well-ventilated area (garage, workshop). If The compressor is in an oil bath, place an absorbent cloth under it - up to 300 ml of oil may leak out during dismantling. Do not forget that some models (for example, Samsung RL34E** or LG GR-B207) have compressors with additional fastenings to the frame - they will also need to be unscrewed.

⚠️ Attention: If the refrigerator is connected to the network, turn it off 12-24 hours before starting work. This is necessary so that the pressure in the system equalizes. Otherwise, when disconnecting the tubes, a water hammer may occur, which will damage the capillary tube.

2. Turning off the refrigerator and draining the refrigerant

The first critical stage is the correct shutdown of the cooling system. This is where many people make the mistake of simply cutting the pipes with wire cutters. This approach is not only dangerous (risk of moisture and debris entering the system), but also illegal from an environmental point of view. Let's consider two scenarios: preservation of freon and full drain.

If you plan reuse the refrigerant (for example, for refueling after repair), you will need pressure manifold and collection bottle. Algorithm of actions:

1. Connect the manifold to the service port (usually located on the filter drier).
2. Open the cylinder valve and slowly release the gas, controlling the pressure pressure gauge.
3. After the pressure has decreased to 0 atm, close the valve and disconnect the hoses.

For complete drainage (if the compressor is subject to disposal), you can use Schrader needle, which is inserted into the service port. After this, the hole must be plugged to prevent moisture from entering. Remember: in systems with isobutane (R600a) the pressure is higher than in models with R134a the drainage must be more careful.

What will happen if the freon is not drained before dismantling?

If the system is suddenly opened, refrigerant under pressure can escape, causing frostbite to the skin or damage to the eyes. In addition, remnants of freon in the tubes can ignite when heated with a blowtorch (R600a is especially dangerous - it is flammable!).

3. Disconnecting electrical connections

After draining the refrigerant it is necessary disconnect the compressor from the electrical circuit. In most models it is connected via starting relay i thermal protection relay. These parts are usually mounted directly on or near the compressor housing.

Here's how to properly disconnect the wires:

1. Take a photo of the connection diagram (this will help with reassembly).
2. Unscrew the relay mounting screws (usually self-tapping screws or latches).
3. Carefully remove the terminals from the compressor contacts by pulling them up (do not pull the wires!).
4. Mark the wires with tape or stickers (for example, "C" - common, "R" - run, "S" - start).

⚠️ Attention: In some models Samsung and LG with inverter compressors are used specialized connectors, which cannot be disconnected by force. They require flat plastic puller (comes with the refrigerator or sold in service centers).

If you notice melted contacts or blackened wires, this is a sign of a faulty relay or compressor. In this case, before installing a new unit, be sure to check the circuit with a multimeter for a short circuit.

4. Dismantling the compressor: cutting tubes and removing fasteners

Now we move on to the most important stage - the physical separation of the compressor from the system. It's important here do not damage the copper tubes, since they will then have to be soldered or replaced. Proceed according to the following algorithm:

Step 1. Freeing the compressor from the fastenings. Usually it is fixed to the refrigerator frame with 3-4 bolts (10-12 mm in size). Unscrew them with a wrench, holding the compressor with your hand so that it does not fall. In models Atlant i Indesit are often used spring shock absorbers —they need to be removed after the bolts.

Step 2. Separating the tubes. There are two options:

• 🔪 Cutting with a pipe cutter - a neat method, but requires subsequent soldering when reverse assembly.
• 🔥 Heating with a blowtorch - suitable for separating solder joints (you need to heat the soldering area until the solder melts).

When cutting with a pipe cutter, step back from soldering points at least 5 cm —this will provide a margin for reconnection. If the tubes are stuck, do not try to “tear them off” - use WD-40 or heat the joint with a hairdryer.

⚠️ Attention: In refrigerators with a No Frost system (for example, Bosch KGE39**), the compressor can be connected to capillary tube, which is very fragile. When dismantling, do not pull on it - this will lead to depressurization of the system.

5. Features of working with inverter compressors

Inverter models (Samsung Digital Inverter, LG Linear Compressor) have a number of differences from classic piston compressors. Their dismantling requires greater care due to:

• 🔌 Electronic control unit, which is often integrated into the compressor housing.
• 🔄 The absence of a traditional starting relay —an inverter board is used instead.
• 🛡️ Additional vibration isolationwhich cannot be damaged during removal.

When working with such models, consider:

1. Disconnect all connectors on the control board, and not just the power wires.
2. Do not drop the compressor - the electronic unit is sensitive to shock.
3. To test the inverter compressor after dismantling you will need special stand (it is impossible to check its performance at home).

If you remove an inverter compressor for replacement, buy a similar model even small differences in power or type of refrigerant can lead to incorrect operation of the system. For example, a compressor from Samsung RT38K will not be suitable for the model Samsung RB37J**, despite the external similarity.

6. Typical mistakes and how to avoid them

Even experienced craftsmen sometimes make mistakes when dismantling the compressor. Here the most common mistakes and ways to prevent them:

Error	Consequences	How to avoid
Cutting pipes without plugs	Moisture and debris getting into the system	Immediately cover the cuts with electrical tape or special caps
Using a grinder for cutting pipes	Copper melting, burrs, risk fire	Use only a pipe cutter or a hacksaw for metal
Draining freon in a room without ventilation	Vapour poisoning, dizziness, nausea	Work outdoors or with forced exhaust
Overheating of tubes during soldering	Insulation burning, copper deformation	Use a heat sink (wet cloth, radiator)

Another common problem is damage to the capillary tube. It is thin (diameter ~1 mm) and bends easily. If this happens, the system will have to be purged with nitrogen and a new capillary installed, which increases the cost of repairs by 30–50%.

⚠️ Attention: If, after dismantling the compressor, you find oil drips with metal shavingson its body, this is a sign piston jamming. In this case, be sure to flush the system and replace the filter drier - otherwise the new compressor will quickly fail.

What to do if the compressor does not unscrews?

If the bolts are stuck, try the following methods:

1. Heat the mount with a hair dryer (temperature ~150°C).

2. Tap the head of the bolt with a hammer through a soft spacer (for example, a piece of wood).

3. Use a liquid to remove rust (for example, PB Blaster).

If all else fails, carefully cut off the bolt with a grinder, but do not damage the threads in the frame.

7. Disposal of an old compressor and preparation for installing a new one

The removed compressor cannot simply be thrown into a trash container. In its housing remain refrigerant (even after draining) and compressor oil, which are classified as hazardous waste. Here is how to properly dispose of the unit:

• 🌍 Take it to a scrap metal collection point —many organizations accept compressors separately. (sometimes they even pay for them).
• ♻️ Take it to a service center —some workshops accept old parts for recycling for free.
• 🚛 Take it to the landfill —only if other options are not available (check the rules with your local administration).

Before installing a new compressor, be sure to:

1. Purge the system nitrogen to remove moisture (pressure ~6 atm).
2. Replace filter drier - it accumulates moisture and dirt.
3. Check integrity of the tubes and seal if necessary damaged areas.

If you are installing a compressor of a different model, make sure that:

• 🔋 Matches refrigerant type (for example, R134a incompatible c R600a).
• ⚖️ The power of the new compressor does not exceed the old one by more than 20%.
• 🔌 Suitable electrical connectors (especially important for inverter models).

8. When is it better to contact professionals

Although dismantling the compressor is quite possible with your own hands, there are situations when the risks outweigh. benefitContact the service center if:

• 🔧 The refrigerator is under warranty (self-repair will void it).
• ⚡ The compressor operates from three-phase network (found in industrial models).
• ☠️ You suspect a leak ammonia (characteristic pungent odor) - this is dangerous to health.
• 💻 Needed reflashing the electronic unit (relevant for modern models with Wi-Fi modules).

The average cost of professional dismantling of a compressor in 2026 is 1500–3500 rubles (depending on the region and complexity of the work). If a complete replacement with freon refilling is required, the price will rise to 5000–8000 rubles. However, in some cases (for example, when interturn short circuit windings) repairs can cost more than buying a new refrigerator.

⚠️ Attention: Prices and service conditions may vary depending on the service center. Check current tariffs on the websites of official partners of the brand or by calling the hotline.

FAQ: Frequently asked questions about dismantling the compressor

Is it possible to remove the compressor without draining the freon?

Technically it is possible, but it is highly not recommended. atm, and if the tubes are suddenly opened, the refrigerant will escape, which is dangerous to health. In addition, without draining the freon, you are violating environmental legislation.

How can you tell if the compressor is faulty?

Signs of a compressor failure:

• The refrigerator is not working. cools, but the light inside is on.
• The compressor hums, but does not start (thermal protection is triggered).
• Oil streaks with metal shavings appear on the compressor housing.
• The relay clicks are heard, but the motor does not turn on.

For an accurate diagnosis, check the windings with a multimeter (the resistance between the contacts should be in the range of 10–30 Ohms).

How much oil should be in the compressor?

The volume of oil depends on the model:

• Small compressors (up to 1/10 hp) - 150-200 ml.
• Medium (1/5-1/3 hp) - 250–350 ml.
• Large (1/2 hp and above) - 400–600 ml.

When replacing a compressor, use the same type of oil as in the old one (for example, PVE for R134a or POE for R600a). You cannot mix different types of oils!

What to do if after replacing the compressor the refrigerator does not freeze?

Possible reasons:

• Insufficient freon charge (need to be topped up).
• Clogged capillary tube (nitrogen purge required).
• Malfunction of the thermostat or electronic unit.
• Refrigerant leakage through poorly sealed connections.

Check the pressure in the system with a pressure gauge. If it is below normal, look for a leak using leak detector or a soap solution.

Is it possible to use a compressor from one refrigerator in another?

Theoretically, yes, but only if they match:

• Refrigerant type.
• Power (no more than ±15% of the original).
• Oil type.
• Electrical parameters (voltage, starting current).

For example, compressor from Atlant MKhM-170 is suitable for Atlant MKhM-180, but not for Samsung RB30J****. Before installation, check the technical characteristics of both refrigerators.