DW-YL450 Biomedical Freezer

The Meling Biomedical DW-YL450 provides 450 L (15.89 cu. ft.) of frozen storage within an upright, dual-compartment cabinet. Its two-door layout and twelve ABS drawers help organize stored materials and provide separate access to each storage compartment.

The freezer combines a −10°C to −25°C temperature range, microprocessor temperature control, two compressors, temperature logging, and multiple alarm functions for laboratory and biomedical storage. The cabinet measures 810 × 741 × 1,960 mm (W × D × H).

Certifications

- UL/cUL listed for the United States and Canada
- CE marked

Temperature Control and Refrigeration

The DW-YL450 uses a microprocessor temperature controller and a digital display that shows temperature in 0.1°C increments. Its refrigeration system uses two compressors, direct cooling, manual defrosting, and R600a hydrocarbon refrigerant.

Manufacturer internal testing reports the following typical performance:

- Temperature fluctuation: 2.0°C
- Pull-down time to −25°C: 2 hours
- Temperature recovery after a one-minute door opening: 0.6 hours, equivalent to 36 minutes

These figures are based on internal testing at a −25°C set point and a 25°C ambient temperature.

Temperature Logging and Monitoring

The built-in data logger records temperature every 10 minutes and stores up to 100,000 temperature records. Recorded data can be exported through the USB port.

A remote alarm contact provides an additional connection option. The freezer also includes a backup battery and two access ports, each 23 mm in diameter.

Alarm Functions

The DW-YL450 provides alarms for:

- High and low storage temperatures
- High ambient temperature
- Power failure
- Low battery
- Data logger failure
- Sensor error
- Door ajar
- Data communication failure

Cabinet Features

- Two-door, dual-compartment upright configuration
- Twelve ABS storage drawers
- Individual drawer dimensions of 320 × 518.5 × 178 mm (L × D × H)
- Foam-insulated doors
- Safety lock
- Sprayed-aluminum plate interior, with stainless steel listed as an optional interior material
- PCM exterior
- Two 23 mm-diameter access ports
- Circuit breaker for electrical protection
- Four casters, including two with brakes

Electrical Specifications

The manufacturer’s brochure lists the following paired power supply and rated current values:

Main Specifications