LAUDA Variocool VC 7000 W Process Circulating Chiller/Heater for Bioprocessing

Overview

The LAUDA Variocool VC 7000 W is a high-performance, compact process circulating chiller/heater engineered specifically for demanding bioprocess temperature control applications. Utilizing a dual-mode refrigeration and electric heating system with independent PID-controlled regulation, it maintains precise thermal setpoints across a wide operational range of −20 °C to +80 °C—critical for upstream and downstream biomanufacturing workflows. Its design adheres to the thermodynamic requirements of single-use bioreactors (SUBs), jacketed fermenters, cold chain validation systems, and controlled storage environments where tight thermal stability (±0.1 K), reproducible ramping profiles, and media compatibility are non-negotiable. Unlike conventional chillers limited to sub-zero operation or heaters constrained to ambient-plus ranges, the VC 7000 W integrates both functions within a single robust architecture—eliminating the need for external heat exchangers or auxiliary heating units while minimizing footprint and installation complexity.

Key Features

• High-capacity pressure pump delivering up to 37 L/min at 3.2 bar—engineered for low-pressure-drop circulation through large-volume bioreactor jackets and complex fluid loops
• SmartCool digital cooling management system that dynamically modulates compressor output and fan speed to match real-time thermal load, reducing energy consumption by up to 25% versus fixed-speed systems
• Full-color TFT touchscreen interface with multi-language support (English, German, French, Spanish, Italian, Russian), real-time temperature curve visualization, and intuitive text-based navigation
• Integrated programmable controller supporting up to 150 segmented temperature profiles—including ramp-hold-cool sequences—with timestamped execution logging
• Dual-sensor monitoring with electronic liquid level detection, low-level alarm, and adjustable bypass for pressure limitation—ensuring safe, uninterrupted operation during extended runs
• Non-flammable fluid compatibility: certified for operation with deionized water alone across ≥90% of its working range (5–80 °C), eliminating glycol handling, disposal, and regulatory concerns in food-grade and pharmaceutical cleanroom applications
• Modular interface expansion: supports analog I/O (0–10 V / 4–20 mA), digital relay modules, RS-232/485, PROFIBUS DP, and Ethernet-USB gateways for seamless integration into SCADA, DCS, and MES platforms

Sample Compatibility & Compliance

The VC 7000 W is validated for use with standard bioprocess-compatible heat transfer fluids including USP Purified Water, WFI (Water for Injection), and 30% aqueous propylene glycol solutions. Its stainless steel internal circuitry, EPDM-sealed connections, and absence of copper or zinc components prevent leaching and corrosion—meeting material compatibility requirements per USP , ISO 10993-1, and FDA 21 CFR Part 211. The unit complies with electromagnetic compatibility standards IEC 61000-6-2 (immunity) and IEC 61000-6-4 (emission), carries CE marking under the EU Machinery Directive 2006/42/EC and Low Voltage Directive 2014/35/EU, and is UL/cUL listed for North American installations. It supports audit-ready data integrity through optional time-stamped event logs and password-protected parameter access—facilitating compliance with GMP Annex 11 and ALCOA+ principles.

Software & Data Management

LAUDA’s proprietary CommandControl software enables remote configuration, real-time monitoring, and historical trend analysis via Ethernet or USB connection. All temperature setpoints, program segments, alarm states, and system diagnostics are logged with ISO 8601 timestamps and stored locally on the device’s internal memory (≥10,000 entries). Optional firmware upgrades include 21 CFR Part 11-compliant electronic signature functionality, role-based user permissions, and encrypted export of CSV-formatted datasets for LIMS integration. The system supports automated backup to external USB drives and can trigger email/SMS alerts upon critical fault conditions—including loss of coolant flow, sensor drift exceeding ±0.3 K, or sustained deviation beyond ±0.5 K from setpoint for >60 seconds.

Applications

• Temperature control of single-use bioreactors (5–2000 L) during mammalian cell culture, microbial fermentation, and viral vector production
• Cooling and heating of chromatography columns and buffer preparation systems in downstream purification suites
• Environmental simulation for stability testing of biologics, vaccines, and mRNA-LNPs per ICH Q5C and Q1A(R2)
• Thermal conditioning of filling lines, vial washers, and lyophilizer shelves in aseptic manufacturing
• Validation of cold chain logistics equipment including portable incubators, shippers, and warehouse monitoring sensors
• Supporting GLP-compliant preclinical studies requiring traceable, repeatable thermal exposure protocols

FAQ

Can the VC 7000 W operate continuously at 5 °C using only water as the heat transfer fluid?
Yes. Its optimized evaporator design and SmartCool logic allow stable, long-term operation with deionized water across 5–80 °C—eliminating glycol-related maintenance and contamination risks.
Is the unit suitable for GMP environments with strict documentation requirements?
Yes. With optional firmware, it provides electronic signatures, audit trails, and exportable calibration records compliant with 21 CFR Part 11 and EU Annex 11.
What is the maximum recommended distance for remote control via the LAUDA Command Module?
The Command Module supports reliable wired Ethernet communication up to 50 meters without signal degradation; fiber-optic extension is supported for longer distances.
Does the VC 7000 W support integration with DeltaV, Siemens PCS7, or Rockwell FactoryTalk?
Yes—via PROFIBUS DP, Modbus TCP, or OPC UA interfaces (available through optional fieldbus modules), enabling bidirectional setpoint control and status feedback.
How is thermal stability verified during IQ/OQ qualification?
The system includes built-in self-calibration routines for Pt100 sensors and supports third-party verification using NIST-traceable reference probes per ASTM E74 and ISO/IEC 17025 protocols.