Let’s look at the process of replacing the refrigerant using a Samsung refrigerator as an example. Follow the simple instructions:
- locate the freon leakage from the refrigerator. Use a special detector to identify the damaged hardware unit. During the inspection of the unit, rely on visual indications: rust, streaks, and deformation of housing elements. The tool reacts to an increased concentration of refrigerant in the air. Therefore, there is no problem identifying the damaged part.
- localization of the damaged component. The specifics of the leakage repair depend largely on the defective component. If there is no problem accessing the defective part, then it simply needs to be replaced or the connection sealed. For example, if a circuit is leaking, the defective section should be cut out and then the system should be looped in. When the refrigerant escapes from the evaporator or other sealed part, the unit would have to be completely disassembled to avoid damage to other modules.
- installation of a new filter drier. This part is always replaced when the freon is refilled. Installing a new part prevents moisture from entering the cooling system.
- Sealing. To check, add nitrogen to the cooling circuit. Connect a pressure gauge and check the actual values. If the pressure test is successful, bleed the gas and continue working – the system is completely sealed.
- Vent the air and moisture from the circuit – this process is called vacuuming by experienced craftsmen. The user will also need special equipment for this step. Using a Schrader valve, the unit is connected to the refrigerator, and then the air and moisture are evacuated to create the right vacuum.
- Refrigerant charge. Select the correct type of freon, which is indicated in the instructions or on a special sticker on the refrigerator. The refrigerant is also injected through the Schrader valve. Freon is added to the circuit from a special cylinder. Adhere to the recommended refrigerant injection level. Monitor the filling level of the circuit using a pressure gauge, and consider the mass. Therefore, put the cylinder with the coolant on the scale beforehand.
- Check that the work has been carried out. When the freon has been pumped into the system, check that the refrigerator is in good working order and suitable for subsequent operation.
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