Julabo FLW7006 Circulating Chiller
| Brand | Julabo |
|---|---|
| Origin | Germany |
| Model | FLW7006 |
| Instrument Type | Integrated Circulating Chiller |
| Cooling Method | Water-Cooled |
| Temperature Range | −20 to +40 °C |
| Temperature Stability | ±0.5 °C |
| Refrigeration Capacity | 7.4 kW at 20 °C |
| Pump Flow Rate | 60 L/min |
| Pump Pressure Range | 0.5–6.0 bar |
| Reservoir Volume | 39–47 L |
| Operating Mode | Continuous |
| Refrigerant | R404A (GWP = 3922) |
| Compressor | Single-Stage |
| Refrigerant Charge | 1500 g |
| CO₂-Equivalent Emissions | 5.883 t |
| Communication Interface | RS232 (optional), Profibus (optional) |
| Ambient Operating Temperature | 5–40 °C |
| Dimensions (W × L × H) | 78 × 85 × 148 cm |
| Weight | 220 kg |
| Sound Pressure Level (1 m) | ≤74 dBA |
| Fluid Compatibility | Water, Water/Glycol Mixtures, JULABO Thermal Bath Fluids |
| Inlet/Outlet Port | G1¼" external thread |
| Reservoir Fill Port | Top-access |
| Max. Return Fluid Temperature | ≤80 °C |
Overview
The Julabo FLW7006 Circulating Chiller is an industrial-grade, water-cooled temperature control system engineered for high-demand laboratory and pilot-scale process applications requiring precise, stable, and continuous cooling across a broad operating range (−20 to +40 °C). Based on vapor-compression refrigeration with a single-stage R404A compressor, the FLW7006 delivers 7.4 kW of refrigeration capacity at 20 °C ambient — scalable under varying load conditions down to 1.3 kW at −20 °C. Its robust architecture integrates a high-flow, pressure-variable circulation pump (60 L/min, 0.5–6.0 bar), a large-volume reservoir (39–47 L), and top-access fill port for operational convenience. Designed to replace inefficient tap-water cooling systems, it significantly reduces water consumption while maintaining thermal stability within ±0.5 °C — critical for sensitive instrumentation such as NMR spectrometers, laser sources, X-ray diffractometers, and vacuum pumps.
Key Features
- Water-cooled condenser design enables stable performance in environments where ambient air cooling is impractical or thermally constrained.
- Wide temperature operating envelope (−20 to +40 °C) supports both cryogenic sample conditioning and moderate-temperature process cooling.
- High-capacity circulation system: 60 L/min flow rate with adjustable pressure output (0.5–6.0 bar) ensures compatibility with long fluid loops and high-backpressure equipment.
- Large reservoir volume (39–47 L) provides thermal inertia, minimizing short-term load-induced fluctuations and extending time between maintenance intervals.
- Top-fill reservoir access simplifies routine fluid replenishment and minimizes spill risk during operation.
- Integrated LED display with 0.1 °C resolution offers real-time monitoring of setpoint, actual bath temperature, pump pressure, and system status.
- Compatible with aqueous glycol mixtures and JULABO-certified Thermal bath fluids — enabling freeze protection, extended service life, and reduced microbial growth.
- RS232 and optional Profibus interfaces support integration into centralized lab automation systems and comply with data integrity requirements under FDA 21 CFR Part 11 when paired with validated software.
Sample Compatibility & Compliance
The FLW7006 is designed for closed-loop circulation of heat-transfer media only — not for direct immersion or open-bath applications. It accommodates water, water/ethylene glycol (up to 50 % v/v), and JULABO Thermal series fluids. All wetted components are constructed from corrosion-resistant stainless steel, brass, and EPDM elastomers, ensuring long-term compatibility with standard laboratory coolants. The unit meets CE marking requirements per EU Machinery Directive 2006/42/EC and Low Voltage Directive 2014/35/EU. Refrigerant handling complies with F-Gas Regulation (EU) No. 517/2014. Electrical safety conforms to IEC 61010-1:2010 for laboratory equipment. While not intrinsically safe, it may be deployed in non-hazardous zones per ATEX Category 3G (Zone 2) when installed per manufacturer guidelines.
Software & Data Management
The FLW7006 supports bidirectional communication via RS232 serial interface (standard) or Profibus DP (optional), enabling remote parameter setting, real-time data logging, and alarm event reporting. When integrated with JULABO’s WinTemp software or third-party SCADA platforms, the chiller supports audit-trail generation, user-access control, and electronic signature functionality — facilitating compliance with GLP, GMP, and ISO/IEC 17025 quality management frameworks. Logged parameters include temperature setpoint, actual bath temperature, pump pressure, runtime hours, compressor cycles, and fault codes. All data exports in CSV format for traceability and trending analysis.
Applications
- Cooling high-power lasers and optical benches requiring vibration-free, low-noise thermal management.
- Temperature stabilization of mass spectrometry ion sources, ICP-MS nebulizers, and GC detectors.
- Process cooling for rotary evaporators, jacketed reactors, and crystallization units in pharmaceutical development labs.
- Supporting calorimetry systems (e.g., DSC, ITC) where baseline stability directly impacts measurement reproducibility.
- Industrial pilot-line cooling for extrusion, coating, and polymer processing equipment demanding consistent thermal input.
- Backup cooling for HVAC-integrated cleanroom utilities where redundancy and reliability are mission-critical.
FAQ
What is the maximum allowable return fluid temperature?
The FLW7006 accepts return fluid up to 80 °C — enabling integration with exothermic processes where inlet temperatures exceed typical chiller limits.
Can the FLW7006 operate continuously under full load?
Yes. It is rated for uninterrupted 24/7 operation at ambient temperatures between 5 and 40 °C, provided water-cooling supply meets specified flow and temperature requirements.
Is R404A refrigerant compliant with current environmental regulations?
R404A is permitted for servicing existing equipment under EU F-Gas Regulation, though its high GWP (3922) mandates leak-checking, recovery, and certified technician handling; Julabo provides technical documentation to support regulatory reporting.
What maintenance intervals are recommended?
Compressor oil inspection every 2,000 operating hours; refrigerant circuit leak check annually; reservoir cleaning and coolant replacement every 12 months or per fluid manufacturer specifications.
Does the unit include flow and temperature safety interlocks?
Yes — integrated flow sensors and PT100 temperature probes trigger automatic shutdown upon low-flow detection or overtemperature conditions, preventing dry-run damage and thermal runaway.
