Normal time temp. maintaining at -90 degree C with 2comp. and when Emergency single comp. maintaining at -80 degee C <>>.  

It is a REVOLUTION on the COOLING TECHNOLOGIES !!.  

No need Welding work when compressor replacement

No need shift samples to other backup freezer when emergency

No need switch-off when compressor replacement

No need charging or discharging when compressor replacement

No need special service tools like welding machine,torch,gases, etc..,, spanner is sufficient.

No need specially trained service engineer, Users can replace the compressor within 30minutes

Detailed Description 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 TECHNOLOG <<>> Y !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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

<<>> !!!!!!!!!!!NO NEED WELDING WORK WHEN COMPRESSOR REPLACEMENT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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

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

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

!!!!!!!!!! NO NEED SHIFT SAMPLES TO OTHER BACKUP FREEZER WHEN EMERGENCY!!!!!!!!!!!!!!

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

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