EYELA CA Series Circulating Chiller

Overview

The EYELA CA Series Circulating Chiller is a precision-engineered, air-cooled refrigeration system designed for stable, continuous temperature control in demanding laboratory applications. Operating on vapor-compression refrigeration using environmentally compliant R407C refrigerant, the CA chiller delivers consistent thermal management across a wide operational range of −20°C to +30°C. Its closed-loop circulation architecture ensures minimal evaporation loss and contamination risk—critical for long-duration experiments involving rotary evaporators, condensers, reactors, or analytical instrumentation requiring precise coolant delivery. The unit integrates a high-efficiency scroll-type compressor (675 W), nickel-plated copper cooling coil, and a 14 L SUS304 stainless steel reservoir engineered for corrosion resistance and cleanability. With a maximum external flow rate of 27 L/min (when equipped with optional high-pressure pump), the CA series supports multi-instrument cooling networks—including dual rotary evaporator setups—while maintaining thermal stability within ±2°C under dynamic load conditions.

Key Features

• Wide temperature range (−20°C to +30°C) enables versatility across low-temperature condensation, ambient-controlled synthesis, and moderate cryogenic applications.
• Closed-circuit design minimizes water consumption and prevents airborne particulate ingress into the coolant loop.
• Touch-key interface with backlit LCD display provides intuitive setpoint entry and real-time monitoring with 0.1°C resolution.
• Dual-stage safety architecture includes compressor high-pressure cutoff, electronic leakage detection, thermal overload relays, and integrated diagnostic routines for thermostat and pump subsystems.
• Standard 11 mm OD quick-connect ports accommodate common laboratory tubing; optional high-pressure pump extends operational head to 2 kg/cm² for elevated or extended cooling circuits.
• Air-cooled condenser eliminates dependency on facility water supply, enhancing installation flexibility in ISO-classified labs or mobile research units.

Sample Compatibility & Compliance

The CA chiller is compatible with aqueous and glycol-water mixtures (up to 30% v/v ethylene or propylene glycol) for sub-zero operation. Its SUS304 reservoir and nickel-plated copper heat exchanger ensure compatibility with standard lab solvents and prevent metal ion leaching—essential for trace-metal-sensitive analyses. The unit conforms to JIS B 8603 (Japanese Industrial Standard for laboratory chillers) and carries CE marking under EMC Directive 2014/30/EU (EN 61000-6-2/6-3) and Low Voltage Directive 2014/35/EU. While not inherently 21 CFR Part 11 compliant, its analog alarm and recorder outputs support integration into validated systems with external audit-trail-capable data loggers meeting GLP/GMP requirements.

Software & Data Management

The CA chiller operates as a standalone hardware controller without embedded software or network connectivity. All operational parameters—including setpoint, actual bath temperature, compressor status, and alarm history—are displayed locally via the LCD interface. Analog voltage outputs (0–5 V or 0–10 V) from the recorder port enable connection to third-party chart recorders, PLCs, or SCADA systems for time-stamped thermal profiling. Alarm output signals (dry contact) can trigger external shutdown sequences in cascade-controlled processes. For laboratories requiring digital data integrity, integration with validated data acquisition platforms (e.g., LabVIEW-based systems with electronic signature capability) satisfies FDA-regulated documentation needs.

Applications

• Cooling of rotary evaporators (supports simultaneous operation of two units at 10°C bath temperature).
• Temperature stabilization of jacketed glass reactors during exothermic or endothermic reactions.
• Condenser cooling in distillation, reflux, or Soxhlet extraction systems.
• Thermal regulation of HPLC column ovens, UV-Vis spectrophotometer Peltier elements, and laser sources.
• Support of open-loop systems when used with optional sealed reservoir lid and external pressure-rated tubing.

FAQ

What is the minimum operating temperature with pure water coolant?
Pure water should not be used below 0°C due to freezing risk. For operation down to −20°C, a 30% propylene glycol/water mixture is recommended.
Can the CA chiller be integrated into a building management system (BMS)?
Yes—via its analog recorder output and dry-contact alarm port, provided the BMS accepts 0–10 V signals and isolated relay inputs.
Is the reservoir drain valve accessible for routine maintenance?
Yes—a front-mounted brass drain valve allows complete reservoir emptying without disassembly.
Does the unit require annual refrigerant servicing?
No—R407C is a zeotropic blend sealed for life; routine maintenance is limited to filter cleaning, reservoir inspection, and condenser coil dust removal.
What is the expected service life under continuous operation?
With proper ventilation and ambient temperature ≤30°C, the compressor and control electronics are rated for ≥20,000 hours of operation (approx. 8 years at 24/7 duty cycle).