Liebherr SRFvh 4011 Laboratory Refrigerator

Overview

The Liebherr SRFvh 4011 is a high-precision, DIN 13277-compliant laboratory refrigerator engineered for the secure, stable, and traceable storage of temperature-sensitive biological materials, pharmaceuticals, vaccines, clinical samples, and reference standards. Designed specifically for life science laboratories operating under GLP, GMP, or ISO 17025 frameworks, this unit employs forced-air circulation with microprocessor-controlled refrigeration to maintain a tightly regulated temperature environment between +3 °C and +16 °C. Its core thermal architecture—featuring optimized airflow distribution, high-efficiency R600a refrigerant, and precision thermistor-based feedback loops—ensures a maximum deviation of ±2 °C from setpoint under standard ambient conditions (10–35 °C), with documented gradient stability of ≤3.0 °C and peak fluctuation limited to 2.4 °C over 24 hours. The cabinet’s structural integrity, thermal insulation (CFC-free polyurethane foam), and double-glazed tempered glass door minimize thermal load intrusion while enabling visual sample verification without compromising internal climate stability.

Key Features

• Microprocessor-controlled temperature management with 2.4-inch color touchscreen interface supporting intuitive parameter configuration, real-time display of current/setpoint temperatures, and alarm status visualization.
• +2 °C Safety Device: An independent thermal safeguard that activates immediate audible/visual alerts and initiates corrective cooling intervention if internal temperature drops below +2 °C—preventing accidental freezing of biologics, reagents, or vaccines.
• Dual-interface connectivity: Integrated Wi-Fi and Ethernet (LAN) ports enable seamless integration with Liebherr SmartMonitoring—a cloud-capable digital platform supporting remote supervision, configurable threshold alerts, and audit-ready event logging.
• Mechanical locking system with two physical keys ensures physical access control in shared or regulated environments, satisfying institutional security policies and regulatory requirements for restricted material handling.
• Energy-optimized design certified to EU Energy Label Class F (2023 methodology), achieving 389 kWh/year consumption—validated across standardized IEC 62552 test cycles at 25 °C ambient—reducing operational overhead without compromising thermal performance.
• Five adjustable, plastic-coated wire shelves (45 kg max load per shelf; 225 kg total cabinet capacity), each sized to match the usable internal footprint (460 × 423 mm), with vertical LED strip lighting embedded along the left sidewall and independent on/off switch.

Sample Compatibility & Compliance

The SRFvh 4011 is validated for continuous storage of serum, plasma, cell suspensions, monoclonal antibodies, lyophilized standards, and unopened vaccine vials requiring maintenance within the +2 °C to +8 °C range—commonly mandated by WHO PQS, USP <1079>, and EMA guidelines. Its adherence to DIN 13277 confirms conformance with rigorous testing protocols for temperature uniformity (±2 °C tolerance across all zones), recovery time (<10 min after 30-sec door opening), and power failure resilience (alarm activation within 10 seconds; sustained alert for ≥12 hours on backup battery). All electronic logging functions—including timestamped temperature readings, alarm events, and user actions—are structured to support FDA 21 CFR Part 11 compliance when deployed with SmartMonitoring’s role-based access control and electronic signature modules.

Software & Data Management

Data integrity is maintained through dual-layer recording: onboard non-volatile memory stores 30 days of 10-minute interval temperature logs, accessible via USB export in CSV format. When connected to Liebherr SmartMonitoring, the unit transmits encrypted telemetry (TLS 1.2) to secure cloud infrastructure, enabling centralized dashboard views across multi-unit installations. Audit trails include operator ID (where configured), parameter changes, alarm acknowledgments, and firmware update histories—all retaining immutable timestamps. Exported datasets comply with ISO/IEC 17025 clause 7.7.1 for measurement traceability and may be integrated into LIMS or ELN systems via RESTful API endpoints.

Applications

This refrigerator serves critical roles in academic research labs storing primary cell lines and tissue lysates; QC/QA departments maintaining calibration standards and reference materials; hospital pharmacies managing cold-chain pharmaceuticals; and contract development and manufacturing organizations (CDMOs) requiring documented storage conditions for stability studies (ICH Q5C). Its low-noise operation (49 dB[A]) and compact footprint (597 mm width) make it suitable for benchtop deployment in biosafety cabinets’ adjacent zones or within modular cleanroom suites where spatial constraints and acoustic sensitivity are prioritized.

FAQ

What regulatory standards does the SRFvh 4011 meet?
It complies fully with DIN 13277 for laboratory and pharmaceutical refrigeration equipment, and its data logging architecture supports alignment with FDA 21 CFR Part 11, EU Annex 11, and ISO/IEC 17025 requirements when used with SmartMonitoring.
Is remote monitoring possible without additional hardware?
Yes—the unit includes factory-integrated Wi-Fi and Ethernet interfaces; no external gateways or adapters are required for connection to Liebherr SmartMonitoring or third-party BMS platforms via standard TCP/IP.
How is temperature uniformity verified across the chamber?
DIN 13277 mandates nine-point mapping (three vertical levels × three horizontal positions); Liebherr validates uniformity during production using NIST-traceable probes, with final certification reports available upon request.
Can the +2 °C Safety Device be disabled?
No—it operates as a hardwired, independent safety circuit and cannot be overridden or deactivated through software or user interface.
What is the expected service life under continuous operation?
Designed for 15+ years of uninterrupted 24/7 operation in controlled environments; Liebherr provides a 2-year comprehensive warranty covering parts, labor, and on-site diagnostics for registered units.