Reduced cooling efficiency or complete stoppage of operation of brand refrigeration equipment Indesit often associated with a violation of the tightness of the circuit. Owners of household appliances immediately ask themselves the question: how many grams of refrigerant are needed to restore the system’s functionality? The answer to this question is not a universal constant, since it directly depends on the specific model, the volume of the freezer compartment and the year of manufacture of the device.
Modern models Indesit can use different types of gases, each of which has its own density and required operating pressure. An incorrect dosage of the substance when refueling can lead to compressor failure or insufficient cooling of products. That is why, before starting any maintenance work, it is necessary to accurately determine the type of refrigerant used and its standard weight indicated by the manufacturer on the nameplate.
In this article we will examine in detail the technical nuances associated with refrigerants in refrigerators Indesit. You will learn how to find technical information on the case, what standards exist for different models, and why self-filling without vacuuming may be useless. Understanding these processes will help you make the right decision about calling a technician or carrying out repairs on your own.
Where to find information about the amount of refrigerant in the refrigerator
The first and most reliable source of information about the amount of freon required is the technical data sheet of the product. However, if the documentation is lost, which happens quite often, do not despair. The manufacturer Indesit, following international standards, is obliged to place key data directly on the unit body. Typically, such a plate is located on the inner wall of the refrigerator compartment, less often on the back wall of the case or inside the door.
This metal or paper sticker contains the serial number, model and, most importantly for us, a column with the designation Ref (Refrigerant). Next to this designation the type of gas (for example, R600a or R134a) and its mass in grams are indicated. This value is the reference value for your specific modification. Ignoring this data and refilling “by eye” is categorically unacceptable.
⚠️ Attention: If the refrigerant mass on the plate is 130 grams, this does not mean that exactly 130 grams need to be pumped into the system at each refill. If there are leaks, some of the oil from the compressor could also leave the circuit, so the exact weight is determined by the technician after evacuation and weighing.
Sometimes the plate can be damaged or worn out over time. In this case, you can try to find information on the model in official catalogs or on specialized repair forums. However, the most accurate method remains a visual inspection of the nameplate. Remember that different modifications of the same model range may have different circuit volumes and, accordingly, different filling rates.
Types of refrigerants used in Indesit refrigerators
The history of the development of refrigeration technology goes back decades, and during this time the chemical composition of working fluids has changed for the sake of ecology and energy efficiency. Refrigerators Indesit, depending on the year of manufacture, could be filled with various types of gases. Understanding the difference between them is critical, since they are not always interchangeable and require different equipment for maintenance.
The most common in old and middle-aged models is freon R134a. This is a gas safe for the ozone layer, replacing the destructive R12. It has excellent thermodynamic properties and is widely used in household appliances. The pressure in the system with this gas is higher than in systems with isobutane, which requires more powerful compressors.
Modern models Indesit are increasingly switching to the use of isobutane, labeled as R600a. This refrigerant is characterized by high energy efficiency and low noise levels during compressor operation. However, it has a significant drawback - high flammability. That is why working with R600a requires special care and compliance with fire safety precautions.
- 🔹 R134a: Most common in middle-aged models, non-flammable, requires synthetic compressor oil.
- 🔹 R600a: Environmentally friendly, economical, used in new models, explosive when concentrated in air.
- 🔹 R12: Found only in very old Soviet or early imported models, production is prohibited due to environmental damage.
It is important to note that mixing different types of refrigerants is strictly prohibited. If the system had R134a, then you only need to fill it with it. An attempt to add another gas will lead to a chemical reaction, the formation of acids, destruction of the insulation of the motor windings and eventual failure of the compressor. Replacing the type of refrigerant is possible only after completely flushing the system and replacing the compressor with an adapted one.
Table of filling rates for popular Indesit models
Although the exact rate is best looked at on a specific piece of equipment, there are average data for popular lines of refrigerators Indesit. These data can help you figure out the order of the numbers, but they are not the absolute truth for each individual case. The volume of the circuit can vary even within the same series.
Below is a table showing the dependence of the amount of freon on the type of refrigerant and an approximate model. Please note that two-compressor models require separate charging for each circuit, and the rates are summed up or indicated separately.
| Model / Series | Refrigerant type | Approximate weight (g) | Features |
|---|---|---|---|
| Indesit DF 416 | R134a | 140 ± 5 | Single compressor, No Frost |
| Indesit C 130 | R134a | 115 ± 5 | Drip system, classic |
| Indesit EF 18 | R600a | 65 ± 3 | Economic series, little gas |
| Indesit ITS 4180 | R600a | 75 ± 3 | Tall height, enlarged contour |
As seen from table, the amount of gas in systems using isobutane (R600a) is significantly less than in systems using freon R134a. This is due to different heat capacities and operating pressures of substances. An error in dosage of even 10-15 grams for low-power R600a systems can become critical. The compressor will work with overload or, conversely, will not be able to create the necessary pressure for evaporation.
If you plan to order gas for repairs, always take a cylinder with a reserve. Standard cylinders are sold in weights of 250 g, 500 g or 1 kg. For one refill of the refrigerator Indesit usually a small cylinder is enough, but the remainder is always useful for refueling in the future or for checking the tightness of the system with nitrogen.
Signs of a freon leak and the need for refueling
Before looking for information about how much freon is needed, you should make sure that the problem lies hidden exactly in the leak. The refrigerator Indesit is a closed system, and in normal condition gas is not consumed and does not require replacement throughout its entire service life. If the refrigerant level has dropped, it means that a hole has formed somewhere.
Symptoms of a lack of refrigerant are quite eloquent. First of all, you will notice that the food in the refrigerator compartment has stopped cooling to the desired temperature, or has stopped cooling altogether. The freezer may continue to operate, but the freezing time will increase significantly. In this case, the compressor will work continuously, without turning off, trying to compensate for the lack of cold.
Another sign may be a hot condenser (grid at the back) only partially or unevenly. Normally, it should be warm along its entire length. If the gas has escaped, circulation is disrupted and heat exchange does not occur properly. It is also possible that swelling may appear on the walls of the refrigerator where the foamed evaporator passes through.
⚠️ Attention: If you find an oily stain under the refrigerator or at the junction of the tubes, this is a sure sign of a leak. Freon carries away particles of compressor oil. Simply adding gas in this case is useless - it will escape through the same hole again.
Leak diagnostics are often carried out using a soap solution or special leak detectors. The technician applies foam to suspicious areas (connections, filters, evaporator) and observes the appearance of bubbles. Only after eliminating the physical hole in the circuit does it make sense to talk about the amount of freon required for refilling.
Technology for correct refilling of the refrigerator
Process of refilling the refrigerator Indesit is not just connecting the cylinder and opening the valve. This is a complex technological process that requires special equipment: a pressure gauge station, a vacuum pump, a scale and a burner. Violation of the technology will result in the refrigerator either not working or burning out in a short time.
The first step is always to remove the remaining old gas and, more importantly, moisture from the system. Moisture inside the circuit is the main enemy. At low temperatures, it turns to ice and clogs the capillary tube, causing a so-called “water hammer” or simply blocking the circulation. Therefore, the vacuum stage is mandatory.
☑️ Checklist for preparation for refueling
The refrigerant dosage is carried out strictly according to the scales. The gas cylinder is placed on an electronic scale, and the technician controls the amount of substance pumped in real time. The pressure in the system is a secondary parameter, depending on the ambient temperature, so you cannot rely only on the pressure gauge.
After pumping the required number of grams, the tube is sealed. Then a test run is performed. The compressor should operate cyclically, turning on and off at the command of the thermostat. If the operating cycle is broken (for example, it works for 1 minute and costs 10), it means that the amount of gas was selected incorrectly or the system is clogged.
Why can’t you refill “by eye”?
Refilling without a pressure scale often leads to overkill. Excess liquid freon can enter the compressor, causing water hammer and mechanical destruction of the valves. In addition, excess pressure increases the load on the motor, reducing its service life.
Common mistakes during self-repair
The desire to save on the services of a service center is understandable, but refrigerator repair Indesit is full of nuances, ignorance of which leads to higher repair costs. The most common mistake is neglecting to replace the filter drier. This element collects moisture and oxidation products. When the system depressurizes, it becomes saturated with moisture from the air and loses its properties.
If you do not replace the filter when refilling, after a short time the capillary tube will become clogged with ice or paraffin plug. The refrigerator will stop freezing, and the procedure will have to be repeated again, but this time with the filter replaced. These are additional costs for gas and labor.
Another mistake is using the wrong oil. Freon R134a and R600a require synthetic oils (POE), which are hygroscopic (absorb moisture). If mineral oil from old R12 gets into the system, separation of substances will occur and compressor lubrication will become ineffective. This will lead to jamming of the piston group.
- 🔸 Lack of vacuum: The remaining moisture will kill the system in a few months.
- 🔸 Refilling: Excess gas increases the condensation pressure, the compressor overheats and turns off via a thermal relay.
- 🔸 Poor soldering: Using solder without flux or overheating of the tubes will lead to new leaks in the near future.
FAQ: Answers to frequently asked questions
Is it possible to fill the Indesit refrigerator yourself without scales?
Theoretically, experienced craftsmen can navigate by pressure and current compressor consumption, but for an amateur this is extremely risky. Without a scale, it is very easy to make a mistake with the dosage, especially for R600a gases, where the count is in grams. An error will lead to unstable operation.
How often do you need to change freon in a refrigerator?
In a working, sealed refrigerator, freon never needs to be changed. It circulates in a closed loop and is not consumed. If the gas has disappeared somewhere, it means there has been a breakdown (leak) that needs to be repaired.
Is it dangerous to breathe freon vapors from the refrigerator?
Modern refrigerants R134a and R600a are not toxic in small quantities, but they displace oxygen. Inhalation of high concentrations may cause suffocation. In addition, R600a is explosive. If there is a leak, it is necessary to ventilate the room and do not use open fire.
Why does the refrigerator freeze after refueling, but does not turn off?
This may indicate several problems: lack of freon (insufficient pressure), clogged filter-drier, thermostat malfunction or loss of compressor performance. Diagnostics of the pressure in the system is required.
In conclusion, it is worth saying that knowing the amount of freon is just the tip of the iceberg in the repair of refrigeration equipment. It is much more important to understand the physical processes occurring inside the circuit and follow the repair technology. If you are not confident in your abilities or do not have special tools, it is better to entrust refilling to professionals to avoid costly replacement of the compressor in the future.