Coolium LX-300P Enhanced Circulating Chiller

Overview

The Coolium LX-300P Enhanced Circulating Chiller is an integrated, air-cooled refrigeration system engineered for precise thermal management in laboratory and light industrial environments. It operates on a vapor-compression refrigeration cycle—using a hermetically sealed compressor, high-efficiency condenser, and optimized evaporator—to transfer heat from process fluid to ambient air. The chiller circulates deionized water or water-glycol mixtures through external equipment via a high-head, adjustable-pressure centrifugal pump. Designed for continuous-duty operation, it maintains stable setpoint temperatures within ±0.1 °C across its 5–35 °C control range under typical ambient conditions (20 °C). Its non-cycling refrigeration architecture—combined with PID-fuzzy hybrid temperature control—eliminates compressor on/off hysteresis, enabling rapid thermal response and minimizing overshoot during load transients. This architecture is particularly suited for applications requiring low thermal drift over extended periods, such as spectroscopic detector cooling or laser cavity stabilization.

Key Features

• Integrated air-cooled design with compact footprint (230 × 475 × 475 mm) and 30 kg mass, suitable for benchtop or under-bench installation
• High-performance circulation pump delivering up to 4.0 bar pressure and 6 L/min flow rate—compatible with moderate backpressure systems including HPLC chillers, vacuum pump jackets, and optical enclosures
• 4 L stainless-steel reservoir with level sensor, corrosion-resistant internal wetted parts, and 1/2″ NPT inlet/outlet ports for standardized fluid coupling
• Multi-parameter digital display showing real-time temperature, pump pressure, and reservoir level—enabling immediate operational verification without external instrumentation
• Critical components sourced from internationally certified suppliers: scroll-type compressor (rated for >20,000 hr MTBF), EC axial fan with IP54 rating, and magnetically coupled circulation pump with ceramic shaft and graphite bearings
• Thermal control firmware supports ramp-soak profiles, manual pressure adjustment, and auto-restart after power interruption—configured via front-panel keypad with password-protected settings

Sample Compatibility & Compliance

The LX-300P is compatible with aqueous coolants (deionized water, 10–30% ethylene glycol/water blends) and has been validated for use with standard laboratory tubing (e.g., Tygon® LFT-50, Viton® reinforced hose) and fittings rated to 6 bar. It meets IEC 61000-6-3 (EMC emission limits) and IEC 61000-6-2 (immunity to electrostatic discharge and RF fields). While not certified to UL/CSA or CE for medical device integration, its electrical safety design complies with GB 4793.1–2019 (equivalent to IEC 61010-1:2010) for laboratory equipment. For GLP/GMP-regulated environments, the unit supports manual logbook documentation of setpoints and runtime; optional RS485 Modbus RTU interface enables integration into centralized monitoring systems compliant with FDA 21 CFR Part 11 audit-trail requirements when paired with validated SCADA software.

Software & Data Management

The LX-300P operates autonomously via embedded microcontroller firmware—no PC dependency required for basic operation. Optional communication modules (RS485 Modbus RTU or analog 4–20 mA output) allow integration into LabVIEW, DeltaV, or custom SCADA platforms for remote setpoint control, alarm relay triggering, and trend logging. Firmware revision v2.3+ includes configurable event logging (power cycles, temperature excursions >±0.3 °C, low-level alerts) stored in non-volatile memory for up to 30 days. All configuration changes are timestamped and require operator authentication—supporting traceability in regulated workflows. No proprietary cloud service or subscription-based software is involved; data export is limited to CSV via serial dump or direct Modbus register read.

Applications

• Analytical Instrumentation: Cooling of CCD/CMOS detectors in UV-Vis and fluorescence spectrometers; thermal stabilization of mass spectrometer ion sources and quadrupole rods; temperature control for rotational viscometers, polarimeters, and rotary evaporators
• Vacuum & Medical Systems: Heat removal from diffusion pumps and turbomolecular pump controllers; temperature regulation of MRI cryo-coolers and X-ray tube housings; auxiliary cooling for patient warming/cooling blankets in clinical research setups
• Industrial & Research Equipment: Thermal management of CO₂ and fiber lasers; process cooling for thin-film deposition chambers and plasma etch tools; jacket temperature control in small-scale bioreactors and catalytic reaction vessels

FAQ

What coolant types are recommended for long-term use?
Deionized water (resistivity ≥1 MΩ·cm) or 15–25% ethylene glycol/water mixtures are recommended. Propylene glycol is acceptable but reduces thermal conductivity by ~15% versus ethylene glycol at equivalent concentrations.

Can the LX-300P operate continuously at 35 °C setpoint in a 30 °C ambient environment?
Yes—its air-cooled condenser is rated for full-load operation at ambient temperatures up to 35 °C, provided minimum clearance (150 mm) is maintained around exhaust vents and airflow is unobstructed.

Is the circulation pump speed adjustable?
No—the pump operates at fixed speed; pressure modulation is achieved via integrated bypass valve, allowing user-set outlet pressure between 0.5 and 4.0 bar while maintaining nominal 6 L/min flow at zero backpressure.

Does the unit include dry-run protection?
Yes—a float-type level switch disables pump operation if reservoir volume falls below 1.2 L, preventing cavitation and bearing damage.

What maintenance intervals are specified?
Compressor oil and refrigerant charge require no scheduled servicing under normal operation. Annual inspection of air filter, condenser coil cleanliness, and electrical connections is advised. Pump seals should be replaced every 12,000 operating hours or per manufacturer’s wear assessment.