YAMATO CF300/701 Circulating Chiller (Authorized Distributor Model)

Overview

The YAMATO CF300/701 series circulating chillers are precision-engineered, air-cooled refrigeration systems designed for stable, continuous temperature control of external equipment in research laboratories, analytical instrumentation suites, and industrial process environments. Operating on the vapor-compression cycle with environmentally compliant R404A refrigerant, these units deliver consistent cooling performance across a regulated operating range of −20°C to ambient temperature. The system employs a closed-loop external circulation architecture—featuring a hermetically sealed magnetic drive pump—to supply temperature-controlled coolant to spectrophotometers, NMR preamplifiers, laser sources, vacuum pumps, and other heat-sensitive instruments requiring reliable thermal management. Engineered for operational safety and long-term reliability, each unit integrates redundant protection mechanisms—including ground-fault interruption, compressor overload relays, pump thermal cutoffs, and compressor delay timers—to prevent damage from electrical anomalies or thermal runaway. The CF300 and CF701 models differ primarily in reservoir capacity (4 L vs. 16 L), cooling output (up to 450 W vs. 900 W at 10°C liquid temperature), flow rate (9.2–10.4 L/min vs. 15.5–17.0 L/min), and head pressure (3.8–5.2 m vs. 9.5–12.5 m), enabling scalable deployment across low- to high-heat-load applications.

Key Features

• Hermetic magnetic drive circulation pump—eliminates seal leakage, ensures maintenance-free operation and chemical compatibility with aqueous and mild solvent-based coolants.
• Digital PID-based temperature setpoint interface with T-type thermocouple feedback—enables precise ±2°C temperature regulation and real-time digital display.
• Waterproof control panel with intuitive numeric keypad—designed for use in humid or splash-prone laboratory environments.
• Remote interlock capability (G-series models)—AC24V dry-contact terminals allow synchronized start/stop control with host equipment (e.g., laser systems, mass spectrometers), preventing unattended pump operation and reducing risk of dry-run failure.
• Integrated safety suite: ground-fault circuit interrupter (GFCI), compressor overload relay, pump thermal protector, and compressor restart delay timer (prevents short-cycling).
• Stainless steel reservoir with calibrated level indicator, overflow port, and drain valve—facilitates rapid coolant exchange and residue-free maintenance.
• Air-cooled condenser with optimized fin geometry—enables stable operation within ambient temperatures of 5–35°C without auxiliary ventilation requirements.

Sample Compatibility & Compliance

The CF300/701 series is compatible with all standard laboratory equipment requiring closed-loop liquid cooling via 11 mm OD inlet/outlet connections. Its non-corrosive nickel-plated copper tubing and stainless steel reservoir support extended use with deionized water, 30% ethylene glycol/water mixtures, and other low-conductivity coolants commonly specified for optical and electronic instrumentation. While not certified for medical device manufacturing, the system adheres to general-purpose laboratory safety standards including IEC 61010-1 (Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use) and conforms to Japanese JIS C 61010-1:2011. All electrical components meet RoHS Directive 2011/65/EU requirements. For GLP/GMP-regulated workflows, optional audit-trail-capable external logging devices may be integrated via analog voltage outputs (0–5 V DC) corresponding to reservoir temperature and pump status.

Software & Data Management

The CF300/701 operates as a standalone hardware controller with no embedded firmware or network interface. Temperature setpoints, status indicators (cooling active, pump running, fault condition), and alarm states are managed exclusively through the front-panel digital interface. For data acquisition and remote monitoring, users may connect third-party DAQ systems to the analog output terminals (temperature signal: 0–5 V DC proportional to −20°C to +30°C range). No proprietary software, cloud connectivity, or FDA 21 CFR Part 11-compliant electronic record functionality is included; however, the unit’s deterministic ON/OFF control logic and hardwired interlocks ensure repeatable, traceable operational behavior suitable for SOP-driven environments where manual log entries are maintained per ISO/IEC 17025 clause 7.5.2.

Applications

• Cooling of high-power lasers (CO₂, diode-pumped solid-state) requiring stable thermal sink performance at sub-ambient temperatures.
• Thermal stabilization of HPLC column ovens, GC detectors, and ICP-MS torch interfaces to minimize baseline drift and improve retention time reproducibility.
• Heat dissipation for electron microscopy specimen stages, cryo-transfer systems, and RF amplifiers in semiconductor metrology labs.
• Support of vacuum pump condensers in rotary evaporators and freeze dryers where coolant temperature directly impacts solvent recovery efficiency.
• Environmental simulation chambers requiring secondary chilled-water feed for humidity control subsystems.

FAQ

What is the difference between CF300 and CF300G models?

The “G” suffix denotes inclusion of AC24V remote control terminals for independent ON/OFF actuation of both the compressor and circulation pump—enabling integration with external equipment interlock circuits.

Can this chiller operate continuously at −20°C?

Yes—provided ambient temperature remains within 5–35°C and coolant composition avoids freezing (e.g., use ≥30% ethylene glycol mixture when operating below 0°C).

Is R404A refrigerant compliant with current environmental regulations?

R404A is permitted for service and maintenance of existing equipment under EU F-Gas Regulation (No. 517/2014) and EPA SNAP program, though it is subject to phase-down schedules; YAMATO provides technical documentation supporting continued safe use in laboratory settings.

Does the unit include a built-in temperature logging function?

No—data logging requires external DAQ hardware connected to the analog output port. The chiller itself maintains no internal memory or timestamped records.

What maintenance intervals are recommended?

Annual inspection of condenser coil cleanliness, reservoir corrosion status, and refrigerant charge integrity is advised. Magnetic pump bearings require no scheduled lubrication; thermal protectors and GFCI functionality should be functionally tested prior to each new experimental campaign.