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Normal time temp. maintaining at -90 degree C with 2comp. and when Emergency single comp. maintaining at -80 degee C . - details see: https://www.machineto.com/ultra-safe-twin-heart-freezer-10244451

Operon'S Ultra Safe(Twin Heart) freezers

OPERON- -156 degree C of Cryogenic cooling system has been Internationally patent registered in Korea(Patent no. : PCT-0337791),China(Patent no. : CN-130411),Germany(Patent no. : 101 94 530),USA(Patent no. : US6,622 518 B2) and -203 degree C of Cryo cooler system has been patent registered(Patent no. : 0469537)

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!NOBODY CAN TRACY , ONLY, OPERON'S TECHNOLOGY !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Model Capacity Temperature Electrical power

DFU-256CUS 256L 2comp. -90 degree , 1comp. - 80 degree C 220V , 1Ph

DFU-374CUS 374L 2comp. -90 degree , 1comp. - 80 degree C 220V , 1Ph

DFU-446CUS 446L 2comp. -90 degree , 1comp. - 80 degree C 220V , 1Ph

DFU-558CUS 558L 2comp. -90 degree , 1comp. - 80 degree C 220V , 1Ph

DFU-657CUS 657L 2comp. -90 degree , 1comp. - 80 degree C 220V , 1Ph

DFU-740CUS 731L 2comp. -90 degree , 1comp. - 80 degree C 220V , 1Ph

DFUD-374CUS 374L 2comp. -90 degree , 1comp. - 80 degree C 220V , 1Ph

DFUD-446CUS 446L 2comp. -90 degree , 1comp. - 80 degree C 220V , 1Ph

DFUD-558CUS 558L 2comp. -90 degree , 1comp. - 80 degree C 220V , 1Ph

DFUD-657CUS 657L 2comp. -90 degree , 1comp. - 80 degree C 220V , 1Ph

DFUD-740CUS 731L 2comp. -90 degree , 1comp. - 80 degree C 220V , 1Ph

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! WELDING-FREE AS SERVICE !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! NO NEED REFRIGERANTS RECHARGE WHEN COMP. REPLACEMENT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! NO NEED REFRIGERANTS DISCHARGE WHEN COMP. REPLACEMENT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! NO NEED SWITCH-OFF WHILE COMP. !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!2 COMPRESSORS MAINTAINING AT -90 DEGREE C WHEN NORMAL TIME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 1 COMPRESSOR MAINTAINING AT -80 DEGREE C WHEN EMERGENCY!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!