BUCHI F-314 Circulating Chiller

Overview

The BUCHI F-314 Circulating Chiller is an integrated, water-cooled temperature control system engineered for precision thermal management in demanding laboratory applications—particularly rotary evaporation, vacuum distillation, and condenser cooling. Operating on a closed-loop refrigeration cycle with R-410A refrigerant (GWP-compliant per EU F-Gas Regulation), the F-314 maintains stable bath temperatures between –10 °C and +25 °C with ±1 °C stability under dynamic load conditions. Its 1850 W cooling capacity at 20 °C ambient ensures rapid heat extraction from high-throughput evaporators, while the 6.5 L stainless-steel reservoir minimizes thermal inertia and supports consistent fluid homogeneity. Designed as a core component of BUCHI’s process-integrated ecosystem, the F-314 communicates bidirectionally via RS485/Modbus RTU with compatible BUCHI instruments—including the R-300 Rotary Evaporator and V-800 Vacuum Controller—to synchronize cooling demand with real-time vapor pressure and rotational speed parameters.

Key Features

• Integrated architecture with built-in water-cooled condenser and centrifugal circulation pump—no external chiller loop or auxiliary coolant lines required.
• Energy-optimized refrigeration circuit delivering up to 75% lower power consumption versus conventional chillers under matched operational loads (per BUCHI internal test protocol BT-F314-EN-2023).
• Dual-sensor temperature monitoring: one in reservoir, one at outlet—enabling active PID-based compensation for flow-induced thermal lag.
• 11 L/min maximum flow rate at 1 bar head pressure, supporting multi-point distribution to parallel condensers or jacketed reactors.
• Corrosion-resistant 316 stainless-steel reservoir and fluid path components compatible with water, 30% ethylene glycol/water mixtures, and other common heat-transfer fluids.
• Intuitive 4.3-inch TFT display with multilingual UI (English, German, French, Spanish, Chinese), real-time trend graphs, and event logging.

Sample Compatibility & Compliance

The F-314 is designed for use with standard laboratory glassware and BUCHI’s full line of evaporation and distillation systems. It complies with IEC 61010-1:2010 (Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use) and meets CE marking requirements under the EU Machinery Directive 2006/42/EC and EMC Directive 2014/30/EU. Refrigerant handling adheres to ISO 5149-2:2014 for hermetic refrigeration systems. While not certified for GMP environments per se, its audit-ready operation log (time-stamped temperature setpoints, alarms, communication events) supports GLP-compliant workflows and satisfies traceability expectations under FDA 21 CFR Part 11 when paired with validated BUCHI LabX software.

Software & Data Management

The F-314 supports native integration with BUCHI LabX software via Ethernet (TCP/IP) or optional USB-to-RS485 adapter. LabX enables centralized configuration, remote monitoring, automated report generation (PDF/CSV), and secure user access control (role-based permissions). All temperature setpoints, deviations, pump status, and communication handshake events are recorded with millisecond-level timestamps and retained for ≥10,000 entries in non-volatile memory. Exported data includes ISO/IEC 17025-aligned metadata (instrument ID, operator ID, calibration due date) and conforms to ASTM E2500-13 guidelines for instrument qualification documentation.

Applications

• Routine and preparative rotary evaporation under controlled condensation temperatures to maximize solvent recovery and minimize bumping.
• Vacuum-assisted fractional distillation where precise condenser temperature directly governs fraction purity and separation efficiency.
• Cooling of reflux condensers in synthetic chemistry setups requiring sustained sub-ambient operation over extended durations (e.g., Grignard reactions, low-boiling-point solvent removal).
• Thermal stabilization of photodiode arrays, FTIR detectors, or laser sources in analytical instrumentation suites.
• Supporting cold-trap functionality in vacuum manifold systems by maintaining consistent trap temperatures below –5 °C.

FAQ

Can the F-314 operate continuously for 24/7 laboratory use?
Yes—the unit is rated for continuous duty under ambient conditions ≤30 °C and relative humidity ≤80% non-condensing. Internal thermal overload protection and refrigerant pressure monitoring ensure long-term reliability.
Is glycol mixture compatibility validated by BUCHI?
Yes—BUCHI certifies performance with aqueous solutions containing up to 30% v/v ethylene glycol. Propylene glycol and other inhibitors are not validated and may affect pump seal longevity or sensor accuracy.
Does the F-314 support external temperature feedback control?
No—the F-314 regulates based on internal reservoir and outlet sensors only. For jacket temperature feedback, integration with LabX and an external PT100 probe connected to a BUCHI interface module is required.
What maintenance intervals are recommended?
Annual inspection of refrigerant charge integrity and condenser coil cleanliness is advised. The circulation filter (integrated in pump housing) should be inspected every 6 months; replacement parts are field-serviceable without tools.
How does the F-314 reduce lab heat load compared to air-cooled chillers?
By rejecting waste heat directly to facility cooling water (typically 15–25 °C), the F-314 avoids adding sensible heat to the lab environment—unlike air-cooled units that exhaust >120% of total electrical input as localized heat.