Meling Biomedical DW-FL270 −20°C to −40°C Upright Ultra-Low Temperature Freezer 270 L

The Meling Biomedical DW-FL270 is a 270 L upright ultra-low temperature freezer designed for controlled storage of temperature-sensitive materials between −20°C and −40°C. Its full-height cabinet combines seven removable ABS drawers, microprocessor temperature control, local temperature data logging, comprehensive alarm protection, and a secure solid-door design. The freezer is suitable for laboratories, research facilities, clinical environments, and other professional facilities requiring organized and documented low-temperature storage.

Certifications

• UL certified for applicable United States safety requirements

• cUL certified for applicable Canadian safety requirements

• CE marked for conformity with applicable European requirements

The microprocessor controller provides continuous digital temperature monitoring with temperature adjustments displayed in 0.1°C increments. Direct cooling and manual defrost support controlled low-temperature operation without the periodic cabinet warming associated with automatic-defrost cycles. The refrigeration system uses R290 hydrocarbon refrigerant and is designed to operate in ambient temperatures from 16°C to 32°C.

Key Features

• 270 L / 9.53 cu. ft. storage capacity

• Full-height upright cabinet

• Adjustable operating range from −20°C to −40°C

• Microprocessor temperature controller

• Digital display with 0.1°C temperature increments

• Seven removable ABS storage drawers

• Direct-cooling refrigeration system

• Manual defrost

• R290 hydrocarbon refrigerant

• Solid foam-insulated door

• Key-operated safety lock

• Spray-coated aluminum interior

• Optional stainless-steel interior configuration

• Built-in USB temperature data logger

• Local storage for up to 100,000 temperature records

• RS485 communication interface

• Remote alarm contact

• Backup battery for continued local monitoring and alarm operation

• 25 mm access port for an independent probe or compatible monitoring equipment

• Circuit breaker for electrical protection

• Casters and balancing feet for positioning and stabilization

Temperature Performance

Manufacturer internal testing reports:

• Temperature uniformity of approximately 3.4°C

• Pull-down time to −40°C of approximately 2.4 hours

• Temperature recovery time of approximately 0.6 hours after the door has been opened for one minute

These figures are based on manufacturer internal testing with the freezer set to −40°C and operated at an ambient temperature of 22°C. Actual performance may vary depending on cabinet loading, ambient conditions, ventilation, installation, initial product temperature, and door-opening frequency.

Comprehensive Alarm Protection

The integrated alarm system provides visual and audible notification for conditions including:

• High cabinet temperature

• Low cabinet temperature

• High ambient temperature

• Power failure

• Low backup-battery level

• Temperature-sensor error

• Door-ajar condition

• Data-logger failure

• Local data-communication failure

These alarms help personnel identify temperature excursions, electrical interruptions, open-door conditions, and monitoring-system faults promptly.

Local Temperature Data Management

The built-in data logger records cabinet temperature locally at ten-minute intervals and can retain up to 100,000 temperature records. Authorized users can export stored records directly through the USB port for documentation, audits, quality-control procedures, and local recordkeeping.

The RS485 interface and remote alarm contact can connect the freezer to compatible on-site alarm panels, monitoring equipment, or building-management systems without requiring an internet connection.

Privacy-Focused Offline Operation

Internet connectivity, cloud communication, and external manufacturer-server data collection are disabled to support institutional privacy, cybersecurity, and data-governance requirements.

Temperature records remain stored locally within the freezer and can be accessed or exported directly through the built-in USB data logger. RS485 communication and remote alarm-contact functionality remain available for compatible on-site systems.

Designed for Professional Facilities

The DW-FL270 provides −40°C storage capability in a relatively narrow upright cabinet. Seven individual drawers help facilities separate materials by department, project, sample type, storage period, or inventory category while limiting exposure of the remaining contents during routine access.

Its solid insulated door, safety lock, local data logger, backup battery, alarm system, and external monitoring interfaces make it suitable for professional environments requiring secure, organized, and documented frozen storage.

Main Specifications

• Model: DW-FL270

• Product type: Upright ultra-low temperature freezer

• Capacity: 270 L / 9.53 cu. ft.

• Temperature range: −20°C to −40°C

• Cooling performance: −40°C

• Recommended ambient temperature: 16°C to 32°C

• Climate class: N

• Controller: Microprocessor

• Display: Digital temperature display

• Display resolution: 0.1°C increments

• Cooling method: Direct cooling

• Defrost method: Manual

• Compressor: One

• Refrigerant: R290

• Insulation thickness: 90 mm at the door, 100 mm at the side walls and back

• Exterior material: Pre-coated metal

• Interior material: Spray-coated aluminum plate; stainless steel optional

• Storage configuration: Seven ABS drawers

• Door type: Solid foam-insulated door

• Access port: One, 25 mm in diameter

• Mobility: Casters with two balancing feet

• Data-recording interval: Every 10 minutes

• Data-storage capacity: Up to 100,000 records

• Data export: USB

• Communication interfaces: RS485 and remote alarm contact

• Backup battery: Included

• Internal dimensions, W × D × H: 500 × 460 × 1,235 mm

• External dimensions, W × D × H: 700 × 640 × 1,792 mm

• Packaged dimensions, W × D × H: 835 × 775 × 1,910 mm

• Net weight: 98 kg

• Gross weight: 115 kg

• North American electrical supply: 110 V, 60 Hz

• Rated current at 110 V: 4.22 A