Julabo FL11006 Circulating Chiller

Overview

The Julabo FL11006 Circulating Chiller is a high-capacity, air-cooled laboratory and industrial chiller engineered for precise temperature control across demanding continuous-duty applications. Based on vapor-compression refrigeration using a single-stage hermetic compressor and R404A refrigerant, the FL11006 delivers stable thermal management over a wide operating range of −20 °C to +40 °C. Its design eliminates reliance on municipal tap water for cooling—reducing water consumption, minimizing scaling risk, and improving process reproducibility in analytical instrumentation, reactor jackets, laser systems, and materials testing setups. With a rated refrigeration capacity of 11 kW at 20 °C ambient and a maximum pump flow of 60 L/min at adjustable pressure (0.5–6.0 bar), the FL11006 supports large-volume heat exchange loops requiring robust hydraulic performance and long-term operational reliability.

Key Features

• Air-cooled condensation system—no external water supply or drainage required; suitable for labs with limited utility infrastructure
• Wide temperature span (−20 to +40 °C) with ±0.5 °C stability and 0.1 °C digital resolution via LED display
• High-flow, pressure-regulated circulation pump (G1¼” male threaded ports; 1″ internal hose ID) enabling compatibility with multi-instrument manifolds and extended loop lengths
• Large reservoir volume (39–47 L) with integrated level indicator and optional pressure monitoring (standard on FL1201 and above)
• Refrigerant charge optimized for efficiency and regulatory compliance: R404A (3000 g), with documented CO₂-equivalent emissions (11.766 t) calculated per ISO 14067
• Top-fill access port simplifies fluid replenishment without disassembly or system depressurization
• Robust steel enclosure with vibration-damped compressor mount and acoustic insulation achieving ≤74 dBA at 1 m distance
• Optional digital communication interfaces—including RS232 and Profibus—for integration into centralized lab automation or SCADA environments

Sample Compatibility & Compliance

The FL11006 accommodates a broad spectrum of heat transfer fluids, including deionized water, aqueous ethylene glycol mixtures (up to 50% v/v), and JULABO-certified Thermal G series heat transfer media. Its sealed-loop architecture permits safe operation with inlet return temperatures up to 80 °C—critical for exothermic reaction cooling and high-power electronics thermal management. The unit complies with EU Directive 2014/68/EU (PED) for pressure equipment, EN 61000-6-3 (EMC emission limits), and EN 61000-6-2 (immunity). All electrical components meet IP20 ingress protection standards. While not intrinsically rated for hazardous areas, its non-sparking motor design and leak-tight refrigerant circuit support use in general-purpose chemical laboratories under standard safety protocols (e.g., OSHA 1910.120, CLP Regulation).

Software & Data Management

Equipped with an embedded microcontroller-based PID temperature controller, the FL11006 supports real-time setpoint adjustment, ramp/soak programming, and alarm-triggered shutdown sequences (e.g., low-level, overtemperature, high-pressure cutout). When configured with RS232 or Profibus, the chiller integrates with third-party data acquisition platforms (e.g., LabVIEW, MATLAB, DeltaV) for time-stamped logging of temperature, flow, pressure, and compressor runtime. Audit-trail functionality—including operator ID tagging and parameter change history—is available via compatible supervisory software compliant with FDA 21 CFR Part 11 requirements when deployed in regulated QC/QA environments. Firmware updates are performed via USB interface, ensuring traceable version control aligned with GLP documentation practices.

Applications

• Cooling of high-power lasers (CO₂, fiber, diode) requiring stable heat sink temperatures and high volumetric flow
• Temperature control of jacketed glass reactors (10–100 L scale) during exothermic synthesis and crystallization studies
• Thermal conditioning of HPLC columns, mass spectrometer ion sources, and NMR probe precooling circuits
• Support for environmental test chambers, material fatigue rigs, and battery cycling stations requiring sustained sub-zero operation
• Integration into pilot-scale bioreactor systems where precise jacket temperature regulation directly impacts cell culture viability and product yield

FAQ

What is the maximum allowable return fluid temperature?
The FL11006 accepts return fluid temperatures up to 80 °C—enabling direct coupling to heated process equipment without intermediate heat exchangers.
Can this chiller operate continuously at −20 °C ambient?
No. The unit requires an ambient environment between 5 °C and 40 °C per EN 60068-2-1/EN 60068-2-2 specifications; operation outside this range may impair compressor lubrication and refrigerant cycle efficiency.
Is R404A refrigerant being phased out? What alternatives exist?
Yes—R404A is subject to EU F-Gas Regulation phase-down schedules. Julabo offers retrofit support and next-generation models using lower-GWP alternatives (e.g., R450A, R513A); however, the FL11006 retains R404A as a field-serviceable, fully documented configuration meeting current global import regulations.
Does the FL11006 support remote monitoring via Ethernet or Modbus TCP?
Not natively. RS232 and Profibus are standard optional interfaces; Ethernet or Modbus TCP connectivity requires an external protocol converter certified for industrial automation networks.
What maintenance intervals are recommended for continuous 24/7 operation?
Compressor oil analysis every 12 months; refrigerant circuit integrity verification annually; pump seal inspection every 18 months; and full system calibration against NIST-traceable references every 24 months—consistent with ISO/IEC 17025 quality management expectations.