Jihepu DW-YL450 Medical Ultra-Low Temperature Freezer

Overview

The Jihepu DW-YL450 Medical Ultra-Low Temperature Freezer is a dual-compartment, microprocessor-controlled cryogenic storage system engineered for reliable long-term preservation of temperature-sensitive biological materials. Designed specifically for clinical and laboratory environments, it operates within a stable temperature range of –10 °C to –40 °C—enabling consistent cold chain integrity for plasma units, vaccine ice packs, diagnostic reagents, and other biospecimens requiring sub-zero stabilization. Its dual independent compressor architecture ensures thermal isolation between upper and lower compartments, minimizing cross-temperature interference and supporting heterogeneous storage protocols within a single unit. The system employs direct cooling technology with high-efficiency compressors and environmentally compliant refrigerants (non-CFC/non-HCFC), aligning with international environmental directives including the Montreal Protocol and EU F-Gas Regulation.

Key Features

• Microprocessor-based digital temperature controller with adjustable setpoint resolution of ±0.1 °C across the full operating range (–10 °C to –40 °C)
• Large backlit LCD display showing real-time compartment temperatures, system status, and alarm history
• Keyboard lock and password-protected parameter access to prevent unauthorized configuration changes
• Comprehensive safety logic: compressor start-up delay, minimum off-cycle interval, sensor fault detection, and audible/visual high/low temperature alarms
• Dual independent refrigeration circuits—each with dedicated compressor, condenser, and evaporator—allowing independent temperature control of upper and lower zones
• High-density polyurethane insulation (≥100 mm thick in walls and door) for low heat ingress and energy-efficient operation
• Twelve stackable, labeled ABS drawers with smooth-glide rails and positive stop mechanisms for organized sample retrieval and inventory management
• Four heavy-duty swivel casters with locking brakes for safe repositioning in constrained laboratory or clinical corridors
• Ergonomic rounded-corner door frame and interior structure to reduce cleaning死角 and improve airflow uniformity
• Three-point mechanical door lock with tamper-resistant design to ensure specimen security and regulatory compliance

Sample Compatibility & Compliance

The DW-YL450 supports storage of primary and secondary packaging formats commonly used in healthcare and life science workflows—including blood bags (CPD/CPDA-1), cryovials (2 mL, 5 mL), PCR tubes, lyophilized reagents, and pre-filled ice packs. Its validated temperature uniformity (±3 °C at steady state per IEC 61000-4-2) and stability meet foundational requirements for GLP-compliant biobanking and clinical trial material handling. While not certified to ISO 13485 or FDA 21 CFR Part 11 out-of-the-box, the freezer’s audit-ready event log (with timestamped temperature deviations, door openings, and alarm triggers) provides traceable data for internal quality systems and third-party audits. It conforms to IEC 61010-1 (Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use) and EN 60335-2-24 (Household and Similar Electrical Appliances – Safety – Particular Requirements for Refrigerating Appliances).

Software & Data Management

The built-in controller records continuous temperature data at 10-minute intervals and retains up to 30 days of historical logs internally. An optional RS-485 interface enables integration with centralized building management systems (BMS) or laboratory information management systems (LIMS) via Modbus RTU protocol. Event logs include timestamps for all alarms, door openings, setpoint modifications, and power interruptions—supporting root-cause analysis during deviation investigations. For facilities requiring electronic record integrity, external data loggers compliant with 21 CFR Part 11 (e.g., calibrated thermistor-based units with audit trail and user authentication) may be deployed alongside the unit to fulfill GxP documentation requirements.

Applications

This ultra-low temperature freezer serves critical roles across hospital blood banks (plasma and platelet storage), public health laboratories (vaccine cold chain buffer storage), academic research cores (cell line and tissue archive support), and food safety testing labs (frozen reference standard preservation). Its dual-zone capability allows concurrent storage of frozen reagents (–20 °C) and extended-stability plasma units (–30 °C to –40 °C), reducing infrastructure footprint without compromising thermal zoning integrity. In field-deployable mobile clinics or regional health centers, its compact footprint (under 0.6 m² floor space) and caster-based mobility support rapid setup and relocation.

FAQ

What is the recommended ambient temperature range for optimal operation?

The unit is rated for Climate Class N (Normal), requiring ambient conditions between 18 °C and 32 °C with relative humidity ≤75% non-condensing.

Can the upper and lower compartments operate at different setpoints simultaneously?

Yes—each compartment features independent temperature control via dedicated compressors and sensors, enabling differential setpoints within the –10 °C to –40 °C range.

Is remote monitoring supported natively?

No native Ethernet or Wi-Fi connectivity is included; however, RS-485 serial output permits integration with external SCADA or LIMS platforms using standard Modbus RTU commands.

What maintenance intervals are recommended?

Condenser coil cleaning every 3–6 months (depending on dust load), door gasket inspection quarterly, and annual verification of temperature uniformity and alarm response using NIST-traceable reference probes.

Does the unit comply with electromagnetic compatibility (EMC) standards?

Yes—it meets IEC 61326-1 for laboratory equipment EMC and IEC 61000-4 series immunity requirements for electrostatic discharge, surge, and fast transient bursts.