Upright freezer MDF-DU503VHE-PE

laboratory220 V240 V

Overview
The MDF-DU503VHE-PE is an ultra-low temperature (ULT) freezer designed for laboratory and medical sample preservation. It uses vacuum insulation panels (VIP) and rigid polyurethane foam to maximise internal usable volume (528 L) while maintaining reliable temperature control between -86°C and -40°C. The unit includes a 10.1-inch door-mounted touchscreen and options for integrated access control.

Key product highlights

• VIP SMART design with natural hydrocarbon (HC) refrigerants and inverter-driven compressors for improved energy profile.
• Operating range: -86 to -40 °C; setpoint range: -90 to -40 °C.
• High-capacity internal volume suited for multiple 2" box configurations and stainless-steel racks.
• Door-mounted 10.1-inch high-resolution touchscreen for monitoring and USB data export.
• Advanced access control options (face recognition, keypad, proximity/NFC, mechanical key) and electric lock availability.

Energy and performance
Natural refrigerants combined with inverter compressor technology and adaptive control algorithms reduce energy consumption and heat output while preserving fast recovery performance after door openings. Representative energy usage:

• 5.4 kWh/day at -80 °C
• 4.4 kWh/day at -70 °C

Smart performance & controls
Inverter-driven compressors with SMART control provide stable temperature uniformity and adaptive compressor management to optimise steady-state efficiency. Internal temperature logging is viewable on the touchscreen and exportable via USB for traceability.

Security, access & monitoring
Integrated monitoring and access control protect valuable samples and record usage:

• Access logging (who accessed and when) and door-open duration monitoring.
• Authentication options: facial recognition (optional), keypad, proximity card / NFC (optional), mechanical key.
• Electric lock option compatible with password and biometric/NFC authentication.
• Alarm suite: power failure, high temperature, low temperature, door-open, filter monitoring with visual/audible alerts.

Design & sample storage
VIP panels and rigid PU foam maximise usable space. The interior includes inner doors and adjustable shelving to reduce temperature disturbance during access and to organise samples efficiently. Typical capacity supports hundreds of 2" boxes in standard rack layouts.

Environment & refrigerants
Cascade refrigeration using naturally occurring hydrocarbon refrigerants (HC) and inverter compressors reduces environmental impact while delivering required ULT performance and recovery after door openings.

Documentation
Product literature (flyer and technical documentation) is available for detailed specifications, options and installation requirements.

Technical specifications

• Model: MDF-DU503VHE-PE
• External Dimensions (W x D x H): 790 x 882 x 1993 mm
• Internal Dimensions (W x D x H): 630 x 600 x 1400 mm
• Volume / Capacity: 528 liter
• Net Weight: 241 kg
• Capacity (Stainless Steel Racks / 2" boxes): 384 (reference capacity; other configurations up to 576 boxes cited)
• Cooling Performance: -86 to -40 °C
• Temperature Setting Range: -90 to -40 °C
• Temperature Control Range: -86 to -40 °C
• Controller: Microcomputer control system
• Display: LCD digital display (10.1-inch high-resolution touchscreen mounted on door)
• Temperature Sensor: Platinum resistance (Pt 1,000 Ω)
• Refrigeration System: Cascade
• Compressors: Hermetic type; High-stage output 750 W; Low-stage output 750 W
• Refrigerant: HC (hydrocarbon)
• Insulation Material: Rigid polyurethane foamed-in-place + Vacuum insulation panel (VIP)
• Exterior Material: Painted steel
• Interior Material: Painted steel
• Outer Door(s): 1
• Outer Door Lock: Yes
• Inner Door(s): 2
• Shelves: 3 (maximum load 50 kg per shelf)
• Vacuum Release Port: 1 (automatic)
• Access Ports: 3 (position: back x1, bottom x2); Access Port Diameter: 30 mm
• Casters: 4 (2 leveling feet)
• Alarm types: Power failure / High temp / Low temp / Door open / Filter monitoring
• Power Supply: 220/230/240 V
• Frequency: 50 / 60 Hz
• Noise Level: 48 dB(A)
• Optional communication interfaces: Modbus (MTR-MODB1-PW), Digital Interface Board (MTR-OPC1-PW), Analog (MTR-420MA-PW)