refrigerators and freezers consist of two basic components: a condenser coil and evaporator coil. A coolant is circulated through these coils by a compressor and an engine. The coolant is cooled in the condenser, then flows to the evaporator. is that the evaporator is the cooling air contact with the coil filled with liquid. The condenser of a refrigerator or freezer is a coil which is located on the outside of the machine is located inside the evaporator. The coolant is distributed in the system by a compressor.
Most refrigerators and freezers have a defrost function. In this type of unit, a heater is automatically activated by a timer to melt the ice inside the unit. The ice is melted in several places in the group, starting from the most cold and icy. When the ice is completely melted, the thermostat automatically switches to a cycle di raffreddamento, al fine di mantenere la temperatura standard di congelamento. Poiché questo processo è automatico, il gelo non si accumula all'interno del box.
Il sistema di compressione dell'unità, che costringe il liquido refrigerante ad attraverso il sistema di bobina, è azionato da un motore. Altre parti di base del sistema di raffreddamento / sbrinamento includono gli interruttori, termostati, resistenze, condensatori e ventilatori. Un fai-da-te può verificare e sostituire molti di questi componenti frigorifero. Tuttavia, ci sono eccezioni, come spiegato più avanti, che è meglio lasciare ad una persona di riparazione professionale.
Attenzione: prima di fare qualsiasi lavoro su un frigorifero o congelatore, assicurarsi che sia scollegato. Dopo aver scollegato l'unità, controllare per vedere se il motore / compressore ha un condensatore, questo componente si trova in un alloggiamento nella parte superiore del motore. I Condensatori immagazzinano energia elettrica anche quando l'unità è scollegata. Prima di fare qualsiasi lavoro su un frigorifero o un congelatore è necessario scaricare il condensatore, o si potrebbe ricevere un duro colpo.
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