Laboratory freezer MDF-DU503VHE-PE

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Overview
The MDF-DU503VHE-PE VIP SMART ultra-low temperature freezer (PHCbi) combines energy-efficient sample storage with advanced access control and tight temperature performance. Nominal internal volume: 528 litres (other page content also references 729 litres). Operating temperature range: −86 °C to −40 °C. Natural hydrocarbon refrigerants and inverter-driven compressors improve efficiency while maintaining cooling performance, ambient tolerance and recovery after door openings.

Energy-saving performance
Designed to reduce operating costs for ultra-low temperature storage, the MDF-DU503VHE-PE delivers low energy consumption while preserving reliable performance. Typical consumption figures:

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

Smart performance
Inverter-driven compressors with SMART control ensure excellent temperature uniformity. Under steady-state conditions, compressors operate at lower speeds while proprietary control algorithms keep temperature variation tightly controlled across the cabinet.

Security control and monitoring
Manage and monitor access to samples, identify users and log access times. Monitor door-open duration. Four locking methods are available to match laboratory policies:

• Facial recognition (optional)
• Keypad
• Proximity card / NFC (optional)
• Key

Electric lock and authentication
Password protection plus optional facial recognition and NFC authentication can be combined with an electric lock to strengthen access control.

Intuitive touchscreen monitoring
An eye-level, door-mounted 10.1-inch high-resolution LCD touchscreen provides direct access to controls and performance data. Internal temperature logs and performance metrics can be displayed graphically. A USB port enables export of logged data to a PC.

Natural refrigerants
Uses hydrocarbon (HC) refrigerants with low environmental impact. Combined with inverter technology, these refrigerants improve energy efficiency without compromising cooling performance or recovery speed after door openings.

High-capacity sample storage
Internal volume of 528 litres provides storage for laboratory sample boxes. The product page also references a 729-litre internal capacity in another content block; both references appear on the same page. Storage and shelving details include:

• Capacity for up to 576 2-inch boxes (page text)
• Capacity (Stainless Steel Racks 2” Boxe): 384 (table)
• Three shelves
• Maximum load 50 kg per shelf

Designed for reliable sample protection
Integrated alarms and monitoring features support dependable day-to-day storage:

• Power-failure alarm
• High-temperature alarm
• Low-temperature alarm
• Door-open monitoring
• Filter monitoring

Specifications
External dimensions (W × D × H): 790 × 882 × 1993 mm
Internal dimensions (W × D × H): 630 × 600 × 1400 mm
Volume: 528 liter
Net weight: 241 kg
Capacity (Stainless Steel Racks 2” Boxe): 384
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 door-mounted high-resolution touchscreen noted elsewhere)
Temperature sensor: Platinum resistance (Pt 1,000 Ω)
Refrigeration system: Cascade
Compressors: High stage side; hermetic type, output: 750 W; Low stage side; hermetic type, 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 doors/lid: 1
Outer door lock: Yes
Inner doors/lid: 2
Shelves: 3
Max. load per shelf: 50 kg
Vacuum release port: 1 (automatic)
Access ports: 3 (position: back ×1, bottom ×2; diameter 30 mm)
Casters: 4 (2 leveling feet)
Alarms: Power failure, high temperature, low temperature, door open, filter monitoring
Power supply: 220/230/240, 220/230 V
Frequency: 50 / 60 Hz
Noise level: 48 dB(A)

Technical characteristics

• Model: MDF-DU503VHE-PE
• Brand: PHCbi
• Effective/internal volume: 528 litre (page also references 729-litre in another block)
• Cooling performance: −86 to −40 °C
• Temperature setting range: −90 to −40 °C
• Controller/display: Microcomputer control system with LCD/10.1-inch touchscreen
• Temperature sensor: Pt 1000 platinum resistance
• Refrigeration: Cascade system with two hermetic compressors (750 W high stage / 750 W low stage)
• Refrigerant: Hydrocarbon (HC)
• Insulation: Rigid polyurethane foam + Vacuum Insulation Panel (VIP)
• External dimensions (W×D×H): 790 × 882 × 1993 mm
• Internal dimensions (W×D×H): 630 × 600 × 1400 mm
• Net weight: 241 kg
• Box capacity: up to 576 2-inch boxes (text) / 384 (stainless steel racks, table)
• Shelves: 3 (max load 50 kg per shelf)
• Access ports: 3 (back ×1, bottom ×2), diameter 30 mm
• Alarms: power failure, high-temperature, low-temperature, door-open, filter monitoring
• Power supply/frequency: 220/230/240, 220/230 V, 50/60 Hz
• Noise level: 48 dB(A)