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Ultra Low Freezers
TwinGuard ULT Freezers (-86°C)
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Product Series Name TwinGuard ULT Freezers (-86°C)
Model MDF-U500VX
External Dimensions (W x D x H) 770 x 870 x 1990 mm
Internal Dimensions (W x D x H) 630 x 600 x 1380 mm
Volume 519 litres
Net Weight 320 kg
Capacity (Aluminium Racks 2” Boxes) 352 (2” boxes)
Capacity (Stainless Steel Racks 2” Boxe) 224 (2” boxes)
Cooling Performance -86 °C
Temperature Setting Range -50 to -90 °C
Temperature Control Range -50 to -86 °C
Controller Microprocessor, non-volatile memory
Display LCD digital display with numerical keys
Temperature Sensor Pt-1000
Refrigeration System Independent Dual-Cooling
Compressors 2 x 1100 W
Refrigerant HFC
Insulation Material PUF / VIP Plus
Insulation Thickness -
Exterior Material Painted Steel
Interior Material Painted Steel
Outer Doors/Lid 1
Outer Door Lock Y
Inner Doors/Lid 2
Shelves 3
Max. Load - Per Shelf 50 kg
Max. Load - Total -
Vacuum Release Port 1 (manual)
Access Port 3
Access Port Position back x 1, bottom x 2
Access Port Diameter 17
Casters 4 (2 leveling feet)
Power Failure V-B-R
High Temperature V-B-R
Low Temperature V-B-R
Filter N/A (filter-less)
Door Open V-B
Power Supply Local
Frequency Local
Noise Level 53 dB [A]

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