Fixing the refrigerator compressor: device, types of fixation and rules dismantling

The compressor is the “heart” of the refrigerator, on which temperature stability and the service life of the equipment depend. But few people think about how exactly this unit is secured inside the case until they are faced with the need for repair or replacement. Improper dismantling can lead to damage to the tubes, freon leakage, or even failure of the new compressor. In this article we will examine all methods of fastening compressors modern and old models, and also give step-by-step instructions for safe removal and installation.

It is important to understand that the fastening design depends not only on the brand (Indesit, Samsung, Atlant), but also on the type of compressor (linear, inverter) and year of manufacture. For example, in refrigerators of the latest series they often use rigid bolted connections. We will consider all options, including nuances that are not written about in standard instructions. Samsung latest episodes are often used shock-absorbing suspensions, and in the old ones ZIL or Minsk — rigid bolted connections. We will consider all options, including nuances that are not written about in standard instructions.

Types of compressor mounts: from springs to shock absorbers

The compressor in the refrigerator is not just “screwed” to the housing - it must be fixed so that:

• 🔧 Dampen vibrations (otherwise the tube connections will come loose over time).
• 🔄 Provide access for maintenance (oil change, winding repair).
• 🛠️ Withstand loads during transportation (especially important for inverter models).

Let's look at the main types of fastenings that are found in 90% of refrigerators:

In inverter units compressors (for example, in Samsung Digital Inverter) often use reinforced shock absorbers with metal bushings - this is due to higher speeds and loads. If your refrigerator has such a compressor, be sure to check the condition of the fastenings when replacing: worn shock absorbers can cause damage to the new unit.

Where the compressor is located and how to get to it

Before talking about mounting, you need to understand where exactly the compressor is located. In 99% of cases, it is located at the bottom of the refrigerator. but there are nuances:

• 🔽 Back below —the classic location for most models (Atlant, Indesit, Stinol). data-i="106">with system
• 🔽 In a niche under the freezer - typical for some Samsung And LG with the system No Frost. Here the compressor can be hidden under a plastic casing.
• 🔽 On the side in a special compartment - rare, but found in industrial or built-in models.

To get to the compressor:

1. Unplug the refrigerator and let it stand for 10-15 minutes (this is necessary to relieve pressure in the system).
2. Move the refrigerator away from the wall (if it is built-in, you will have to dismantle the facade).
3. Remove the back cover - it can be attached with latches, screws or a combination.
4. In some models (Bosch, Siemens) the compressor is covered with additional metal protection - you need to unscrew it.

Be careful: there are pipes with freon and electrical wirings passing near the compressor. Do not pull the wires or bend the copper pipes - this may lead to a refrigerant leak or short circuit.

How to remove a compressor with a spring mount (step-by-step instructions)

Spring mount is the simplest and most common. It is used in most budget models (Biryusa, Nord, Pozis) and some mid-range refrigerators (Indesit, AristonLet's look at the dismantling process:

Disconnect the refrigerator from the mains

Drain the oil from the compressor (if replacement is required)

Mark the position of the tubes with a marker

Prepare tools (wrenches, screwdrivers, pliers)-->

Step 1. Disconnecting the tubes. The compressor is connected to the system by three tubes:

• 🔧 Suction (thick, usually comes from the evaporator).
• 🔧 Discharge (thin, leads to the condenser).
• 🔧 Filling (with valve for freon).

The tubes are attached to the compressor using nuts or rolling. To disconnect them:

1. Loosen the nuts with a wrench (usually by 10 mm or 12 mm).
2. If the tubes are soldered, carefully heat the soldering area with a soldering iron or torch (temperature no higher than 250°Cso as not to damage insulation).
3. After disconnecting, close the tube holes with plugs or tape to prevent moisture and debris from entering.

Step 2. Removing the springs. The compressor is usually suspended on 3-4 springs, which are attached to the frame of the refrigerator. To remove:

1. Support the compressor with your hand or place a support (it weighs 10–20 kg!).
2. Unscrew the bolts securing the springs to the frame (usually M6 or M8).
3. Carefully lower the compressor without pulling the tubes.

What to do if the spring is broken?

If the spring is cracked or stretched, it needs to be replaced with one of similar rigidity. A temporary solution may be to install rubber gaskets between the compressor and the frame, but this will reduce vibration isolation. In spare parts stores, springs are sold in sets of 4 pieces (the article number depends on the model of the refrigerator).

Step 3. Removing the compressor. After disconnecting all the fasteners, carefully remove the compressor from the niche. Pay attention to:

• 🔹 Tube position — take a photo or draw a diagram so that when installing a new compressor you do not confuse the suction and discharge lines.
• 🔹 Relay condition (if it is installed on the compressor). In some models (Atlant), the relay is attached separately - it also needs to be removed.

Mounting features in inverter refrigerators (Samsung, LG, Haier)

Inverter compressors differ not only in the principle of operation, but also in the method of fastening. Here they use reinforced shock absorbers or combined systems (springs + rubber dampers). Let's look at the key differences:

1. Shock absorbers with metal bushings. In models Samsung RB or LG GA the compressor is mounted on 4 shock absorbers, which are inserted into metal bushings on the frame. remove:

1. Unscrew the bolts securing the bushings (usually M8).
2. Remove the shock absorbers from the grooves - they can “stick”, so sometimes it is necessary WD-40.
3. Lower the compressor, holding it by the body (not by the tubes!).

2. Additional fixation with brackets. In some inverter models (Haier, Hisense), the compressor is additionally fixed with metal brackets that are attached to the refrigerator body. last of allto avoid skew.

3. Electronic relay. In inverter systems, the relay is often built into the control board, and is not attached directly to the compressor. When replacing the unit, check:

• 🔌 Condition of the power connectors (they must be clean, without oxidation).
• 🔌 Compatibility of the new compressor with the board (check the model with the spare parts seller).

Frequent errors during dismantling and how to avoid them

Even experienced craftsmen sometimes make mistakes that lead to additional costs: Here are the most common ones:

⚠️ Attention: If you disconnect the tubes. heard a hissing sound - this means that there is freon under pressure in the system. Immediately close the valve (if any) and let the refrigerator stand for 2-3 hours before continuing work.

1. Mixed up tubes. If you mix up the suction and discharge pipes when installing a new compressor, the system will not work. this:

• 📸 Take a photo of the original position of the tubes.
• 🔖 Sign them with a marker (BCAS, NAGN).
• 🔍 Check the diameters: the discharge tube is usually thinner.

2. Damage to the tubes. Copper tubes are easy to bend or break. Rules for working with them:

• 🛠️ Use two wrenches: hold the nut on the compressor with one, unscrew the tube with the other.
• 🔥 When soldering, do not overheat the tube - this may narrow its clearance.
• 🧲 After disconnecting, close the holes with magnets or plugs.

3. Incorrect installation of shock absorbers. If a new compressor is mounted on old worn shock absorbers, vibrations will lead to:

• 🔊 Increased noise.
• 🔧 Loosening of the fasteners tubes.
• ⚡ Risk of short circuit due to friction of wires.

⚠️ Attention: In refrigerators with a system No Frost the compressor may be connected to the blower fan. When dismantling, do not forget to disconnect the fan power connector - otherwise it will burn out when you turn on the refrigerator.

How to secure a new compressor: step-by-step algorithm

Installing a new compressor is the reverse dismantling process, but with several critical nuances. Follow this algorithm:

Step 1. Preparing the compressor. Before installation:

• 🔄 Check that the new compressor has enough oil (usually 300–500 ml).
• 🔧 Make sure that the filling tube is closed with a plug.
• 📋 Check the model compressor with the original (the power and type of refrigerant must match).

Step 2. Attaching to the frame. Depending on the type of fixation:

• 🔧 For springs: Fix the springs on the frame, then carefully lift the compressor and fix it on them. The springs should be there. tensioned evenly.
• 🔧 For shock absorbers: Insert the shock absorbers into the grooves, then secure with bolts. Do not overtighten - this will shorten the service life of the rubber.
• 🔧 For rigid fastening: Use a torque wrench (torque) usually tightened 15–20 N m).

Step 3. Connecting the tubes. Attach them in the following sequence:

1. Put on tubes, new O-rings (they come with the compressor).
2. Screw on the suction tube, then the discharge tube.
3. Close the filling tube with the service valve.

Step 4. Check tightness. After connecting:

• 🔍 Inspect all connections for leaks (you can apply a soap solution - if there is a leak, bubbles will appear).
• 📊 Check the pressure in the system with a pressure gauge (norm for R134a: 0.5–1.5 bar at the suction).

When it is better to call a specialist: 5 cases when you should not take risks

Some breakdowns require professional equipment or experience. Contact a technician if:

1. Freon refilling is required. This cannot be done without a vacuum pump and a pressure manifold.
2. The compressor winding is damaged. Repairing the winding requires special equipment for rewinding.
3. A leak has been detected in the circuit. The search for microcracks in the tubes is carried out using a leak detector.
4. Electronically controlled refrigerator. In models Samsung or LG with a display, replacing the compressor may require flashing the board.
5. The compressor is “jammed.” If you hear a loud click when you turn it on and the protection is triggered, the cause may be a mechanical failure (for example, scuffing on the piston).

The average cost of replacing a compressor at a service center is 5 000–12 000 ₽ (depending on the model and region). compressor

FAQ: Frequently asked questions about compressor mounting

Is it possible to replace a compressor without refilling freon?

Theoretically, yes, if the old compressor has not lost freon (for example, when replaced due to mechanical failure). But in practice, when the pipes are disconnected, part of the refrigerant evaporates, so after replacement, refilling will still be required. Without it, the refrigerator will work. ineffective or will not turn on at all.

How can you tell that the compressor is mounted on shock absorbers and not on springs?

Inspect the fastenings: the springs are metal spirals, and the shock absorbers look like rubber or plastic bushings with a metal core. Also, shock absorbers are usually fastened with bolts, and springs with hooks. or hinges.

What to do if after replacing the compressor the refrigerator makes a lot of noise?

The reasons may be:

• 🔧 The shock absorbers are installed incorrectly (check their position).
• 🔧 The compressor touches the housing or tubes (the fastenings need to be adjusted).
• 🔧 There is air left in the system (re-vacuuming is required).

If the noise does not disappear, check the oil level in the new compressor - its lack may also be the cause.

Is it necessary to change the oil when replacing the compressor?

Yes, if:

• 🔄 The old oil has turned black or has a burning smell.
• 🔄 The compressor was overheating (for example, due to a faulty relay).
• 🔄 You are replacing the compressor with a model with a different type of oil (for example, from mineral to synthetic).

The volume of oil and its type are indicated in the instructions for the compressor (usually PAG or POE for modern refrigerants).

Is it possible to use a compressor from another refrigerator model?

Theoretically yes, but (necessarily) three conditions must be met:

• 🔧 The compressor power must be the same (plus or minus 10%).
• 🔧 The type of refrigerant must be the same (for example, R134a or R600a).
• 🔧 The fasteners must be suitable in size (otherwise you will have to redo the frame).

It is best to select a compressor according to the catalog number (article), which is indicated on the nameplate of the old one.