The situation when Indesit refrigerator stops freezing, and the compressor works almost without interruption, most often indicates a critical lack of refrigerant in the system. Owners of household appliances often wonder whether it is possible to make up for losses on their own, and the answer depends on the availability of specialized tools and an understanding of physical processes. Refrigerant is not just a gas that can be “added” like water into a windshield washer reservoir; this is a working fluid circulating in a closed circuit under pressure.
Before taking active steps, you need to realize that refilling with freon is only the final stage of repair, preceded by complex diagnostics. If a microcrack or depressurization has formed in the system, simply pumping gas will only give a temporary effect, and after a week or a month the problem will return. Therefore, a competent approach involves not only manipulation of the cylinder, but also a thorough search for leaks, their elimination and high-quality preparation of the internal volume of pipelines.
In this article we will analyze in detail the technical side of the process, the types of gases used for models Indesit and an action algorithm that will allow you to make an informed decision: take up the tool do it yourself or call a professional. Remember that working with flammable gases vacuum pumps requires strict adherence to safety rules, neglect of which can lead to fire or explosion.
Leak diagnosis and system preparation
The first and most important step is confirmation the fact of leakage and localization of the damage site. Symptoms can be different: from the complete absence of cold to the formation of a “fur coat” in only one corner of the chamber or, conversely, its complete disappearance when the engine is running. Visual inspection of the back wall of the refrigerator often reveals traces of oil or characteristic swelling of sealed tubes, which is a sure sign of depressurization.
⚠️ Attention: If you find mechanical damage to the evaporator (for example, a puncture with a knife during defrosting), repair by soldering at home is extremely difficult and often ineffective without replacing the entire assembly.
To search for microscopic cracks invisible to the eye, professionals use leak detector or the soaping method. In the second case, a soap solution is applied to all suspicious joints, seals and connections, and if gas is released, characteristic bubbles appear. It is also worth checking evaporator inside the chamber, if the model allows access to it without completely disassembling the case, since corrosion often begins there.
After identifying and eliminating the leak (usually by soldering with silver solder), it is necessary to carry out crimping procedure. This means pressurizing the system with nitrogen to ensure all seams are sealed. Only after the pressure gauge shows stable pressure for several hours can you proceed to the next stage - vacuuming.
- 🔍 Carefully inspect all visible tubes for oil stains.
- 🧼 Use a concentrated soap solution to check all joints.
- ⏱️ Maintain pressure for at least 2-3 hours to guarantee results.
Choosing the type of refrigerant for Indesit
Refrigerators Indesit, produced in different years, can be filled with different types of refrigerants, and the use of unsuitable gas is strictly prohibited. The most common option for modern models is R600a (isobutane), which is highly energy efficient, but is flammable. Older models could be filled with freon R134a, which is chemically inert, but requires different oils and procedures.
You can determine the required type of gas by the technical sticker, which is usually located on the back wall of the unit or inside the refrigerator compartment on the side wall. The column Refrigerant or Refrigerant will indicate the type of substance and its weight, for example, R600a 50g. Ignoring this information or attempting to charge R600a instead of R134a (and vice versa) will lead to improper operation of the compressor, overheating and possible equipment failure.
Particular care should be taken when working with isobutane. Since this gas is heavier than air and is highly flammable, any work to soldering or creating a spark should be carried out only after the gas has completely evaporated from the room. Refilling should be done in a well-ventilated area, away from open sources of fire.
Below is a table of correspondence between types of refrigerants and their characteristics for popular series of refrigerators:
| Refrigerant type | Chemical name | Danger | Application in Indesit |
|---|---|---|---|
| R600a | Isobutane | High (flammable) | Modern models (after 2000s) |
| R134a | Tetrafluoroethane | Low | Models of the 90s and early 2000s |
| R12 | Dichlorodifluoromethane | Average (harmful) | Old Soviet and early imported |
Required tools and equipment
Quality refueling the refrigerator impossible without a specialized set of tools, which differs significantly from the standard home arsenal. The main element is a vacuum pump designed to remove air and moisture from the circuit. Residual moisture in the system, upon contact with freon and oil, forms an acid, which in a short time will destroy the compressor windings from the inside.
The second critical element is the pressure gauge station (manifold). It allows you to control the pressure in the system in real time. To work with different types of freon, hoses and pressure gauges must match: for example, a hose for R600a is often marked in red or another distinctive color, and the threads may differ to prevent connection errors.
You will also need:
1. Electronic scales accurate to the nearest gram, since refilling is carried out strictly by weight.
2. Burner (gas or oxygen) and solder to seal the system.
3. Schrader valve (service valve) for connection to the system.
4. Pipe cutter and roller, if you need to replace sections of the pipeline.
⚠️ Attention: Using car compressors to inflate tires instead of a vacuum pump is unacceptable. They do not create the necessary deep vacuum and can drive oil and moisture into the system.
The process of vacuuming a refrigeration system
Evacuation is a process that cannot be skipped or performed formally. Its goal is to remove not only air from the circuit, but also water vapor, which is always present in the atmosphere and inside old parts. At low pressure, water boils at room temperature and evaporates, after which it is pumped out. The duration of the procedure depends on the power of the pump and the volume of the system, but usually ranges from 30 minutes to an hour.
Technically, the process is as follows: a hose from a pressure gauge station is connected to the service pipe (usually a piece of copper tube on the compressor) through a Schrader valve. It turns on vacuum pump, and the pressure gauge needle should go into the negative zone (vacuum). After reaching the desired level, the valve closes, the pump is turned off, and the system is left under vacuum for 15-20 minutes for control.
If the pressure gauge needle begins to creep up, this indicates a leak. In this case, it is necessary to look for the fistula again. Only a stable position of the arrow confirms that the system is sealed and ready to accept refrigerant. Violation of this stage is the main reason for repeated breakdowns after a seemingly successful repair.
☑️ Evacuation checklist
Technology for charging freon by weight
The process of introducing refrigerant into the system Indesit requires high precision. Unlike old systems, where they focused only on pressure and current, modern units, especially those using isobutane, are charged strictly by weight. An excess of freon will cause liquid refrigerant to enter the compressor, causing water hammer, and a deficiency will not provide the necessary cold.
To perform the operation, a cylinder with freon is installed on an electronic scale. The hose from the station is connected to the cylinder, and a little gas is released from it to displace the air from the hose itself. Then, when the refrigerator compressor is running, freon begins to be sucked into the system. It is important to open the gas supply valve very slowly, in small portions, monitoring the scale readings.
Approximate algorithm of actions:1. Weigh the cylinder before starting work.
2. Open the gas supply valve on the manifold.
3. Start the refrigerator compressor.
4. Monitor the decrease in weight on the display.
5. Close the valve when the target value is reached.
During the filling process, it is necessary to monitor the temperature of the condenser (grid at the back). It should warm up evenly, to about 40-50 degrees. If the tube is hot only at the entrance to the condenser, and then cold, there is not enough freon. If the entire grate is hot and the compressor gets very hot, it is likely refilling.
Why can’t you refill “by eye” or by pressure?
The pressure in the system depends on the ambient temperature. At +15°C and +30°C, the pressure of the same amount of freon will be different, so the only exact parameter is the mass of the substance specified by the manufacturer.
Sealing the system and final check
After the required amount of refrigerant has been collected, it is necessary to hermetically seal the service pipe. This must be done quickly while the compressor is still running or immediately after it stops (depending on the type of valve) to prevent air from being sucked in. The copper tube is clamped with a clamp, sealed with a torch, and only then the tool is removed.
The final check includes a visual inspection of the quality of soldering and a test run of the unit. The refrigerator is left on for at least 2-3 hours (preferably for a day) without loading food. At this time, the uniform cooling of the chambers, the absence of extraneous noise and the cyclic operation of the motor are checked. The normal mode is when the compressor works, then turns off for a long period of inactivity.
If after refueling the refrigerator Indesit continues to work incorrectly, it is possible that an “air pocket” has formed in the system or a blockage of the capillary tube (often happens if the system has not been evacuated properly). In such cases, the procedure must be repeated with the replacement of the filter-drier, which absorbs moisture and oil breakdown products.
- 🔥 Use only refractory solder for reliable sealing.
- ❄️ Let the refrigerator go to mode before loading food.
- 🔊 Listen to the operation of the compressor - it should not vibrate or knock.
⚠️ Attention: The filter drier is a disposable element. Whenever the refrigerant circulation circuit is opened, it must be replaced with a new one, otherwise it will stop retaining moisture and clog the capillary.
Frequently asked questions (FAQ)
Is it possible to fill a refrigerator with freon without a vacuum pump?
Theoretically, Some “folk” methods suggest displacing air with freon itself, purging the system. However, this approach is extremely risky: moisture remains in the system, which will turn into ice in the capillary tube and block circulation, or into acid, which will kill the compressor. Without a vacuum sealer, high-quality refilling is impossible.
How much does freon cost for an Indesit refrigerator?
The cost depends on the type of gas and the volume of the cylinder. R600a is sold in cylinders of different weights. The gas itself is inexpensive, but the main cost of the service is the work of the technician, depreciation of the equipment and the call. Purchasing a whole cylinder for one refrigerator is often not economically feasible for a one-time repair.
Why does the refrigerator freeze after refueling, but does not turn off?
This may indicate several problems: the leak has not been eliminated completely, there is a blockage in the system (ice blockage), or the thermal insulation is damaged. It is also possible that the amount of freon is selected incorrectly, or the thermostat is faulty and does not give the command to turn off.
Is it dangerous to breathe freon vapors?
Yes, in a confined space, a high concentration of freon vapors displaces oxygen, which can lead to suffocation. In addition, R600a is explosive. If liquid freon comes into contact with the skin, it can cause severe frostbite. Work must be carried out in a ventilated area.