Disposing of old household appliances is often considered solely as a way to free up space in the garage, but a competent approach to this process allows you to turn an unnecessary unit into a source of valuable recyclables. The internal structure of the refrigerator hides a significant amount of non-ferrous metals, among which copper, which is in stable demand at collection points, occupies a special place. Understanding the design of the device and knowing the location of key components will allow you to carry out dismantling as efficiently as possible and make a profit from scrap delivery.
The disassembly process requires not only physical strength, but also compliance with strict safety rules, since there may be dangerous refrigerants and oil inside the system. Before starting active operations with the tool, it is necessary to assess the condition of the unit and prepare a workplace that should be well ventilated. Ignoring the preparatory stage can lead to injury or damage to valuable material, which will make the whole undertaking economically unfeasible.
In this article we will look in detail at the algorithm of actions necessary to extract non-ferrous metals from a used refrigerator. You will learn what tools you will need for the job, where exactly the bulk of the copper is hidden and how to properly separate it from the steel body and aluminum elements. Compliance with the described technology guarantees a high yield of useful product and minimizes health risks.
Preparation of the workplace and necessary tools
Effective and safe disassembly of the refrigerator is impossible without proper preparation. You will need a spacious room with a concrete floor or a stable area outside, as the process involves a large amount of metal debris and possible leaks of technical fluids. It is extremely important to ensure good ventilation, especially if you plan to open the cooling system, where freon vapors may remain.
A basic set of tools should include not only standard wrenches and screwdrivers, but also specialized cutting tools. Pipe cutters are ideal for cutting copper pipes; they give an even cut without deforming the metal; however, in a garage, a hacksaw or grinder with a metal cutting disc is often used. The presence of pliers, wire cutters and a hammer is also a prerequisite for successful dismantling.
Particular attention should be paid to personal protective equipment. Working with metal involves the risk of cuts from sharp edges, and when using power tools, the risk of flying sparks and metal shavings. Therefore, the use of safety glasses, thick construction gloves and a respirator is not only desirable, but necessary. Do not neglect these measures, even if disassembly seems simple.
⚠️ Attention: Before starting any work, make sure that the refrigerator is unplugged from the power supply for at least 24 hours. This is necessary to allow the oil to drain from the compressor back into the crankcase, which will prevent it from splashing when the system is opened.
To collect separated materials, prepare separate containers in advance. Copper, aluminum, steel and plastic should be placed in separate piles or bags to avoid wasting time sorting at the end of the process. The cleanliness of scrap directly affects its final cost when delivered to collection points.
☑️ Preparation for disassembly
Dismantling of external elements and access to the insides
The first stage is the removal of all hanging elements that do not contain colored metals, but interfere with access to aggregate components. Refrigerator doors, shelves, drawers and plastic panels are removed first. This allows you to reduce the dimensions of the product and make it easier to manipulate the main body. Often the doors are mounted on powerful hinges, which may be rusty, so the use of penetrating lubricant may be required.
After freeing yourself from plastic and glass, you will be presented with a metal box, in the lower rear part of which the compressor is located. It is this node that is of greatest interest for copper mining. However, you still need to get to it by removing the rear metal grill or panel covering the condenser. In some models, access to the system may be limited by additional insulation.
It is important to carefully handle thermal insulation materials, such as polyurethane foam or glass wool, which may be located inside the walls or behind the panels. These materials have no donation value, but contact with the lungs or skin may cause irritation. You should work with them carefully, trying not to damage the integrity of the insulating layer unnecessarily.
- 🔩 Remove the doors by unscrewing the fastening bolts on the hinges and set them aside.
- 🧊 Remove all internal shelves, containers and drawer guides.
- 🔧 Remove the rear metal panel covering the engine compartment.
- 🧹 Remove the layer of dust and dirt that has accumulated over the years of operation to see the fastening points.
At this stage, you can also detect electronic control units if the refrigerator was equipped with a No Frost system or a digital display. The circuit boards contain a small amount of precious metals, but their extraction requires a separate, finer processing technology, so for the purpose of obtaining copper they can be put aside in a separate category of electronic scrap.
Search and extract the compressor - the main source of copper
The compressor is the heart of the refrigeration machine and the main source of copper in the unit. It is a sealed black or gray metal cylinder located at the bottom of the rear wall. Inside this housing there is an electric motor and a piston group, the windings of which are made of pure copper. It is the removal of this unit that is the priority task during disassembly.
In order to get copper, the compressor must be disconnected from the frame and pipelines. The mounting bolts that hold the motor to the frame are often covered in paint or rust, so removing them can require considerable effort. After removing the fastenings, the compressor becomes free, but still connected to the tube system.
⚠️ Attention: It is strictly forbidden to open the compressor housing using an angle grinder or an open flame indoors. There may be pressurized oil and residual refrigerant inside. It is better to carry out the opening in the open air, using maximum caution.
There are two main ways to extract copper from the compressor: delivering it entirely as ferrous scrap with a notch (which is less profitable) or opening it yourself to obtain pure winding copper. In the second case, it is necessary to cut off the upper part of the housing with a grinder, remove the stator with windings and clean the copper from varnish and insulation. The yield of pure copper can be up to 1.5 kg from one unit.
Safety precautions when opening the compressor
When sawing the compressor housing, use only hand tools or very carefully work with an angle grinder at minimum speed. The spark must not fall on any remaining oil, as this may cause an ignition. It is best to pre-drill a hole in the top of the housing to release any possible excess pressure and ensure that there are no vapors.
It is worth noting that some older models used compressors with aluminum windings, although this is rare. You can determine the material by the color of the cut or using a magnet (copper is not magnetic, but neither is aluminum, so it is better to focus on weight and color). If the winding is aluminum, its cost is much lower, but the extraction technology remains the same.
Removing the condenser and evaporator: copper or aluminum?
The heat exchange circuits of the refrigerator, represented by the condenser (black grille at the back) and the evaporator (inside the chamber), are made of thin tubes. In modern models, manufacturers often replace copper with aluminum or steel in order to save money, but in Soviet-made equipment and models until the mid-2000s, copper was used everywhere. You can determine the material visually: copper has a characteristic reddish tint, especially on sections, and is not attracted by a magnet.
The capacitor is usually welded to the back wall or mounted on brackets. To dismantle it, you need to cut through the connecting tubes and unscrew the fasteners. If the tubes are glued to the body, they must be torn off with force, which can lead to deformation. The evaporator inside the chamber is often foamed or mounted on plastic panels, which makes its removal a more labor-intensive process requiring disassembly of the internal volume.
When separating tubes, it is important to understand that even a thin copper tube has value. You should not throw away scraps if they have a characteristic color. However, if the tubes are covered with a silvery coating or are easily wrinkled and do not have a red tint on the cut, most likely it is aluminum, which is sold at a separate, lower rate.
| Element type | Probable material | Years of manufacture (approximately) | Dismantling features |
|---|---|---|---|
| Capacitor (grid) | Steel (ferrous metal) | Modern (after 2010) | Requires effort to tear off from the body |
| Condenser (grid) | Copper / Coated steel | Soviet and before 2005 | Easy to cut, high value |
| Evaporator (inside) | Aluminium | Most models | Often foamed, difficult to remove |
| Pipelines | Copper | All models | Thin tubes require care |
To increase the cost of scrap, try to clean the tubes as much as possible from adhering insulation, paint and steel elements. Sorting of copper and aluminum must be ideal, since the presence of impurities in a batch of copper can lead to a reduction in the price for the entire weight or refusal to accept it.
Separating electrical components and wiring
In addition to the compressor and heat exchangers, the refrigerator contains electrical wiring, a start relay and a thermostat. The cable running from the plug to the compressor usually has copper conductors. Although its weight is small, copper leakage from the wires of several units can add up to significant additional weight. To remove the wires, the wires must be stripped of insulation.
The start relay and thermostat contain small amounts of copper in their contacts and coils, but disassembling them for the sake of a few grams of metal is often impractical from a time-consuming point of view. It is easier to sell these units as electroscrap or mixed non-ferrous scrap. However, if you are aiming for maximum output, you can disassemble the thermostat, where the sensing capillary tube and contacts are located.
When stripping wires, use a special knife or wire stripper to avoid damaging the wires themselves. Fire-baked insulation is a relic of the past, causing copper to lose up to 15% of its weight due to oxidation and carbon deposits, as well as polluting the environment. Mechanical stripping or using a granulator is preferable.
- ⚡ Disconnect the start relay and thermostat from the compressor.
- 🔌 Cut the power cord as close as possible to the input to the compressor.
- ✂️ Remove the insulation from the wires, maintaining integrity copper conductors.
- 🗑️ Collect all small copper contacts and scraps in one container.
Aluminum wire is more brittle and has a silver color when cut. It cannot be mixed with copper, as this will lead to a conflict of interest during delivery and a possible fine on the part of the receiver.
Sorting, weighing and delivery of scrap metal
The final stage is preparing the collected material for transportation. By this point, you should have several piles: ferrous metals (housing, steel grill), copper (windings, tubes, wires), aluminum (if found) and other debris. The purer the fraction, the higher the price you will receive.
Before going to the collection point, it is advisable to weigh the resulting copper scrap on household scales in order to have an idea of the approximate revenue. However, the final weight and category of the metal is determined by a specialist at the receiving point, often using the method of spectral analysis or density testing. Having a passport when handing over scrap is a mandatory legal requirement.
⚠️ Attention: Prices for non-ferrous metals are volatile and depend on stock quotes of the London Metal Exchange (LME). The exact cost at the moment should be clarified directly at the collection point or on their official resources before delivery.
Do not try to hand over mixed scrap as pure copper - an experienced receiver will immediately notice the catch, and you risk receiving a refusal of service or a reduction in the price of the entire batch. Honesty and correct sorting are the key to a quick transaction and the opportunity to become a regular customer of the collection point, which sometimes entitles you to additional bonuses.
Frequently asked questions (FAQ)
Approximately how much copper can be obtained from one old refrigerator?
The amount of copper varies greatly depending on the year and model. From a Soviet refrigerator you can get from 1.5 to 3 kg of copper (mainly from the compressor and pipes). In modern models, the copper yield can be only 300-500 grams, as manufacturers are actively replacing non-ferrous metals with aluminum and steel.
Is it dangerous to open the compressor yourself?
Yes, this carries certain risks. There may be residual pressure, oil and refrigerant vapor inside. When using an angle grinder, sparks can ignite oil vapors. It is recommended to carry out the opening in the open air, in a well-ventilated place, and to use eye and breathing protection.
Is it possible to hand over the entire refrigerator without disassembling it?
It is possible, but it is not economically viable. Collection points accept refrigerators as ferrous scrap or household scrap at a significantly low price, not taking into account the non-ferrous metal content. Disassembly allows you to increase revenue by 3-5 times due to the separate delivery of copper and aluminum.
What to do with freon during disassembly?
Freon is a gas that is in a gaseous state at normal temperature and pressure. When cutting through the pipes, it simply evaporates. However, some types of freon can be harmful to the environment and the ozone layer, so it is advisable to carry out work in a ventilated area. In industrial conditions, freon is pumped out using special equipment.
Do you need a passport to hand over a small amount of copper?
According to the legislation of the Russian Federation, acceptance of non-ferrous scrap is carried out upon presentation of an identification document, regardless of the volume of the batch. This is necessary to fill out the accounting log and prevent theft of non-ferrous metal. Without a passport, a legal collection point does not have the right to accept scrap from you.