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SAFETY
Before plugging the refrigerator into the electrical outlet, please make sure that:
All electrical connections are grounded and all wiring harnesses are connected, away from the sharp edges of the metal
plates, and that both the internal and external grounding connections of the appliance are properly connected.
ELECTRICAL SYSTEM
PTC (POSITIVE TEMPERATURE COEFFICIENT)
Unlike an electromechanical relay, the PTC resistor has no coil nor any moveable contacts. A PTC is a thermistor or,
in other words, a resistor sensitive to temperature, which can increase its resistance when the temperature is higher.
The operating element of the PTC is basically a highly pure barium titanate disc with aluminum coating.
When a certain voltage is transmitted to the PTC, at first a high current flows through it, raising its temperature and its
resistance. Due to the higher resistance, the current that feeds the starting coils of the compressor decreases
considerably.
This PTC property makes it possible for it to act as a substitute of the work carried out by the electromechanical relay
contacts.
CONTINUOUS LOAD (WORK) CAPACITOR
Some refrigerator models have an integrated 12 µf continuous load or work capacitor, at 200 A.C.V. (Alternating
Current Voltammetry), connected in a circuit parallel to the connections.
BARIUM TITANATE DISC
PTC
