The BLDC refrigeration condensing unit user guide will help the technician to understand the principle of BLDC system functions. Including the safety installation, start-up and maintenance. The performance of BLDC condensing unit have designed based on evaporative temperature from +10deg to -35deg, suitable for freezer; cool room and short case and all the commercial refrigeration system needs, also including supermarket application. The features of BLDC compressor, to provide high efficiency working performance and running at lower noise level.