Liebherr LKexv 1800 Explosion-Proof Laboratory Refrigerator

Overview

The Liebherr LKexv 1800 is a certified explosion-proof upright laboratory refrigerator engineered for the secure, stable, and compliant storage of flammable liquids, volatile organic compounds (VOCs), combustible solvents, reactive reagents, and hazardous powders in regulated research and quality control environments. Designed and manufactured in Austria under strict adherence to EU safety directives, it operates on the principle of intrinsic safety and non-incendive design—eliminating ignition sources through spark-free electronics, sealed compressors, and explosion-resistant enclosures. Its temperature control system maintains a precise, uniform thermal environment across the entire 180 L interior volume within the +1 °C to +15 °C operational range—covering the majority of ICH Q5A, USP , and ISO 8573-1 recommended storage conditions for stability-indicating chemical reference standards, biological intermediates, and calibration materials. The unit is not intended for freezing or cryogenic applications but delivers exceptional thermal consistency critical for long-term integrity of temperature-sensitive analytical standards and QC samples.

Key Features

• ATEX 2014/34/EU (ATEX 95) certified for use in Zone 1 and Zone 2 hazardous areas—validated by independent Notified Body testing and full documentation traceability.
• High-resolution electronic controller with ±0.1 °C setpoint accuracy and real-time digital display; temperature uniformity maintained within ±0.8 °C throughout the chamber at steady state.
• Four-tier alarm architecture: audible/visual alerts for temperature excursion (>±2 °C deviation), door ajar (>30 s), mains power loss, and internal sensor fault—with automatic logging of the last three alarm events including timestamp, type, and duration.
• Integrated support for external PT100 Class A probe (optional) enabling redundant, independent monitoring per GLP/GMP audit requirements.
• Energy-optimized refrigeration circuit using environmentally compliant R600a (isobutane) refrigerant; verified daily consumption ≤ 0.898 kWh under standard test conditions (ISO 8573-1, EN 62552).
• Robust mechanical construction: stainless steel interior, reinforced glass shelves (40 kg load capacity), and heavy-duty plastic drawers (24 kg), all mounted on corrosion-resistant guides.
• Reversible door hinge system and ergonomic slim-profile handle designed for integration into constrained lab layouts without compromising accessibility or ergonomics.

Sample Compatibility & Compliance

The LKexv 1800 is validated for storage of Class I, Group IIA–IIB (e.g., acetone, ethanol, toluene, ether, ethyl acetate) and Class II, Group E–G (combustible dusts) substances per NEC Article 500 and IEC 60079-0. It meets the essential health and safety requirements of the EU Machinery Directive 2006/42/EC and Electromagnetic Compatibility Directive 2014/30/EU. Its climate class SN-ST ensures reliable cooling performance across ambient temperatures from 10 °C to 38 °C—making it suitable for placement in non-climate-controlled corridors, shared instrument rooms, or pilot-scale synthesis labs. All electrical components—including fan motors, thermostats, and control boards—are certified non-incendive per EN 60079-15. The unit supports 21 CFR Part 11-compliant data integrity workflows when paired with validated external temperature monitoring systems.

Software & Data Management

While the LKexv 1800 operates via embedded firmware without cloud connectivity or proprietary software, its controller provides native support for regulatory-grade data capture: alarm logs are retained in non-volatile memory with time/date stamping, and the optional PT100 interface enables connection to third-party validated data loggers (e.g., DeltaTRAK, DicksonOne, or Eurotherm) that generate PDF audit trails compliant with FDA ALCOA+ principles. The unit’s analog voltage output (0–10 V) and RS485 Modbus RTU port allow seamless integration into centralized BMS or LIMS platforms for automated temperature surveillance and exception reporting.

Applications

• Secure short- and long-term storage of flammable solvents used in HPLC mobile phase preparation, GC sample dilution, and extraction protocols.
• Stabilization of peroxide-forming ethers (e.g., diethyl ether, THF) and low-flash-point reagents (e.g., hexane, pentane) in synthetic chemistry labs.
• Holding zone for pre-conditioned reference standards prior to FTIR, UV-Vis, or titration analysis in pharmaceutical QC laboratories.
• Backup cold storage for active pharmaceutical ingredients (APIs) and excipients requiring ambient-controlled conditions per ICH Q1A(R2) stability protocols.
• Compliant storage of catalysts, initiators, and monomers in polymer research facilities where static discharge and thermal runaway risks must be mitigated.

FAQ

Is the LKexv 1800 certified for use in Zone 1 classified areas?

Yes—it carries full ATEX Category 2G certification (II 2G Ex db ib IIB T4 Gb) for gas atmospheres and is approved for continuous operation in Zone 1 hazardous locations.
Can the unit be installed in a room without air conditioning?

Yes—the SN-ST climate class guarantees stable operation at ambient temperatures up to 38 °C, provided minimum ventilation clearance (10 cm rear/side, 15 cm top) is maintained.
Does it support 21 CFR Part 11 compliance out of the box?

No—the base unit does not include electronic signature or audit trail functionality; however, its analog and digital outputs enable integration with validated external systems that do.
What is the warranty coverage for this model?

Liebherr provides a 24-month limited warranty covering parts and labor for defects in materials and workmanship under normal laboratory use, excluding consumables and damage from improper installation or environmental exposure.
Is remote monitoring possible without third-party hardware?

No—remote access requires integration with an external data logger or building management system via the RS485 or 0–10 V interface; no built-in Wi-Fi or Ethernet module is included.