... by microscomputer, frequency control of motor speed, touching panel. Large Capacity Refrigrated CentrifugeModel DL-8MMain Technical PerformanceControl by microcomputer, ... the instrument, it is installed with unbalanced unit, gate lid, over-speed and over-temperature protection device. And cold ... 1°CCompressorR404aTimer Range0~99h 59minPower SupplyAC220V 50Hz 40A Large Capacity Refrigrated Centrifuge