... , low noise, 4 stable performance, long life AR series semi-enclosed refrigeration compressor1 compressor design, whether by the ... new TCF refrigerant R134a, R404A, R507A and R407C, series compressors can smooth, reliable operation.2 high performance standard ... protector is composed of control unit INT69 and 3 micro PTC thermistor, can effectively prevent the temperature of the motor overload ...