What about compressor overload protection?
Poor lubrication of compressor. Due to moisture and impurities in the refrigerating system too much, make the oil deterioration, or the refrigeration system return oil, compressor oil, will cause the compressor lubricating effect becomes poor, resulting in high temperature protection and compressor.
Clogged capillary or dry filter. At this point, the compressor suction temperature increases, the compressor can not be inhaled refrigerant cooling, causing the compressor temperature rise, protective relay action
The starting capacitor of the compressor is invalid and short circuited, the starting winding is broken, the running winding partial turn short circuit, the compressor holding shaft and the clamping cylinder can cause the compressor starting current to be too large, and the protective relay action
The voltage on the compressor is too low, including the power supply voltage of the power grid is low and the contact of the power supply line is poor and the line diameter is fine. Both will cause the compressor to start the current is too large, and the protection relay action
In the refrigeration system, a protective relay is provided to prevent excessive current and excessive temperature rise of the compressor
