Faced with a breakdown of the refrigeration unit, many owners are thinking about replacing the engine themselves. Compressor It is the heart of the cooling system, and its dismantling requires not only physical strength, but also certain technical knowledge. In this article, we will look at how to remove a compressor from a refrigerator at home, look at the key stages of the process and determine whether the game is worth the candle.
Before you begin disassembling, you need to understand that the system is sealed and under pressure. Incorrect actions can lead to injury or further damage to the equipment. Video instructions often show the process at an accelerated pace, omitting important nuances, which we will now discuss in detail. Your safety is the number one priority when carrying out any work with electrical appliances.
To begin work, you will need to prepare a workplace. It should be well lit and ventilated, since refrigerant circulates in the system, which during combustion can form toxic compounds. Dismantling of the engine is only part of the work, which will be followed by installation of a new unit and evacuation of the system, which is extremely difficult to do at home without special tools.
Necessary tools and preparation
To successfully remove the compressor, desire alone is not enough. You will need a specific set of tools that will ensure the safe removal of metal tubes and electrical contacts. Lack of the necessary equipment can turn a simple repair into a dangerous undertaking with the risk of cuts or burns.
The main tool for working with copper pipes is a pipe cutter. Using a hacksaw for metal is highly undesirable, as it creates chips that will inevitably get inside the system and damage the new compressor in a matter of minutes. You will also need pliers, screwdrivers of various types and, possibly, wrenches for removing the mounting bolts.
- 🛠️ A pipe cutter for copper pipes or a quality cutting tool.
- 🔌 Soldering iron or torch (if you plan to solder the pipes, although this is not always the case when removing necessary).
- 🧤 Protective gloves and glasses to protect against oil splashes and sharp edges.
- 🔦 A powerful flashlight for inspecting hard-to-reach places in the niche of the unit.
Do not forget about the container for collecting oil. If the system depressurizes, technical oil will leak from the compressor and condenser, which cannot be drained into the sewer or onto the ground. Disposal technical fluids must be carried out in accordance with the environmental standards of your region.
⚠️ Attention: Before starting any work, be sure to disconnect the refrigerator from the power supply! Unplug the plug from the socket and make sure there is no damage to the cord. Working with a device connected to the network is deadly.
Access to the compressor compartment
The first step will be to gain physical access to the unit. In most modern refrigerator models Indesit, Atlant or Beko the compressor is located in the lower rear part of the case. It is closed with a metal or plastic casing, which performs protective and noise-insulating functions.
Carefully move the refrigerator away from the wall, providing yourself with room to maneuver. Remove the back cover by unscrewing the fixing screws around the perimeter. On some models, the lid may be snapped onto plastic clips that require careful handling to avoid breaking. After removing the cover, you will have a view of the motor-compressor, capacitor and start-up relay.
Visually inspect the condition of the wiring and tubes. If you see signs of severe corrosion, melted plastic or obvious leaks, this may indicate more serious problems than just engine failure. Diagnostics at this stage will help avoid unnecessary costs if the problem lies elsewhere.
Where is it located filter drier?
The filter drier is usually located next to the compressor on a high-pressure copper pipe. It is a small cylinder, often painted black or copper. When replacing the compressor, it is also strongly recommended to change it, since it accumulates moisture and oil breakdown products. jerks so as not to damage the fragile contacts.
Electrical disconnection
After gaining access, you must disconnect the electrical contacts. A start-protection relay and a thermostat are installed on the compressor housing. They are put directly on the contact group coming out of the motor housing. They must be removed carefully, without jerking, so as not to damage the fragile contacts.
First remove the protective plastic box, if any. Then disconnect the terminals coming from the refrigerator's power wire. It is recommended to first photograph the connection diagram or sketch it, since the color marking of the wires from different manufacturers (Liebherr, LG, Samsung) may be different. This will help you connect the new one correctly. unit.
| Wire color | Usual purpose | Note |
|---|---|---|
| Green/Yellow | Grounding | Connected to body |
| Brown/Black | Phase | Main power |
| Blue/White | Zero | Circuit circuits |
| Multi-colored | Signal | For temperature sensors |
After disconnecting the wires, put them aside so that they do not interfere with further work. Check the integrity of the insulation on the wires going to the relay. If the insulation is cracked, it must be restored. before connecting a new compressor, otherwise a short circuit may occur.
Removing copper pipes
The most critical moment is disconnecting the copper lines. The compressor is connected to the system by two pipes: one discharge (high pressure outlet), the other suction (low pressure inlet). The third, often sealed, is technological and is used for. refilling with freon.
Take a pipe cutter and install it on the tube at a distance of 10-15 cm from the soldering point to the compressor. Rotate the tool smoothly, tightening the screw until the tube is cut. Never do not use a saw or wire cutters unless you are sure that chips will not get inside. A sharp break in the tube can lead to splashing of oil and residual freon.
After cutting the first tube, gas may escape from the system. Then cut off the second tube (fitting) does not interfere with removal, but most often it is also cut off to completely free it. unit.
- 🔪 Make an even cut perpendicular to the tube for ease of future soldering.
- 🌬️ Ventilate the room when any remaining refrigerant escapes.
- 🛢️ Place a container under the cut points to collect the flowing oil.
⚠️ Attention: It is strictly forbidden to cut through the tubes with side cutters! The resulting copper shavings will enter the system and irreversibly damage the new compressor and capillary tube.
Removing the compressor from the frame
When the electrics and pipes are disconnected, the compressor is still attached to the metal frame of the refrigerator. Usually it is mounted on four shock-absorbing studs with rubber bushings. These bushings will harden and crack over time, so they must be removed carefully.
Hold the heavy motor housing with one hand, and unscrew the nuts or bolts of the fastening with the other. designs, for example, in older models ZIL or Frost, spring clamps can be used that just need to be straightened. The weight of the compressor ranges from 10 to 15 kg, so make sure that you hold it securely.
Carefully lift the unit. If it is stuck or is holding tightly, do not jerk it from side to side, trying not to damage the remaining parts of the cooling system.
☑️ Checklist. dismantling
Disposal of the old unit
After you have managed to remove the compressor, the question of its disposal arises. Inside the housing there is technical oil, which is classified as hazardous waste. You should not pour it on the ground or into the sink.
Drain the oil into a prepared plastic bottle. To do this, you can turn the compressor over or, if possible, drill a hole at the lowest point of the housing (although usually it is enough to just pour it through the open pipes). Oil you need to take it to a special collection point for waste petroleum products.
The metal compressor housing itself is scrap black and non-ferrous metals. It can be taken to scrap metal collection points. However, if your area has strict environmental regulations, it is better to use the services of specialized appliance recycling services.
Do not store the old compressor in a residential area. Residues of oil can have a pungent odor, and the unit itself takes up a lot of space. It is best to organize its removal immediately after completion of the installation of new equipment.
⚠️ Attention: Technical characteristics of compressors may vary. When purchasing a new unit, check the power, type of refrigerant (R134a, R600a) and overall dimensions. A discrepancy between the parameters will lead to incorrect operation of the refrigerator.
Frequent errors during dismantling
Many self-taught craftsmen make mistakes that are subsequently costly. One of the most common is neglect of cleanliness when working with pipes. If dust, moisture or chips get inside the system, this is a guarantee of repeated repairs in the near future.
Another mistake is the use of physical force where accuracy is needed. Breaking off contacts, deformation of the frame or damage to the condenser (which is often located nearby and is made of a thin tube) can make repairs economically impractical. Condenser restoring is much more difficult than simply replacing the compressor.
It is also often forgotten that it is easy to “replace and turn on” it is impossible. The system requires evacuation and precise charging with freon. Without a vacuum sealer, air and moisture will remain in the tubes, which will cause the formation of ice plugs and acids inside the system, corroding the windings.
- ❌ Using open fire sources in a closed room without ventilation.
- ❌ Trying to solder tubes without nitrogen (oxidation of copper from the inside).
- ❌ Ignoring the replacement of the filter drier.
Understanding these risks will help you make an informed decision: take on the repair yourself or call a professional with evacuation and refilling equipment.
FAQ: Frequently Asked Questions
Is it possible to remove the compressor without bleeding freon?
Technically, the system is sealed, but when the pipes are cut, freon will inevitably release into the atmosphere. It makes no sense to specifically bleed it through the Schrader valve at home, since this gas cannot be reused without complex cleaning. The main thing is to do this in a ventilated place.
Is it necessary to flush the system when replacing a compressor?
Yes, if the old compressor burned out (“jammed” or there was an interturn short circuit), combustion products and acidity entered the system. Washing is done with a special solvent or nitrogen under pressure. If you simply replace the motor without flushing, the new unit will burn out very quickly.
How much does a refrigerator compressor weigh?
Weight depends on the model and manufacturer. Standard household compressors weigh between 10 and 16 kg. More powerful models for large two-chamber refrigerators can reach 20 kg. Take this into account when transporting and installing.
Can a compressor from a refrigerator be used for other purposes?
Yes, old serviceable compressors are often used to create homemade airbrushes, pumps for inflating tires, or for vacuuming (in reverse mode). However, remember that they are not designed for long-term operation in this mode and require the installation of a receiver.