Tianfeng TF-LS-2.5KW Industrial Circulating Chiller

Overview

The Tianfeng TF-LS-2.5KW Industrial Circulating Chiller is an integrated, water-cooled temperature control system engineered for stable, continuous thermal management of laboratory and analytical instrumentation. Designed around a hermetic scroll compressor and R22 refrigerant circuit, it operates on the vapor-compression cycle to deliver precise heat removal from external equipment—such as lasers, spectrometers, NMR preamplifiers, rotary evaporators, and vacuum pumps—via a closed-loop chilled water circuit. Its 2.5 kW nominal cooling capacity, combined with a ±0.1 °C temperature stability over the 5–40 °C operating range, ensures reproducible thermal conditions critical for process-sensitive applications. The unit features a 27 L stainless steel reservoir, high-efficiency copper-tube/aluminum-fin condenser with low-noise external rotor fan (500 m³/h airflow), and direct-expansion evaporator coil immersed in the water tank—eliminating secondary heat exchanger losses and enhancing thermal response fidelity.

Key Features

• Hermetically sealed scroll compressor (0.43 kW) delivering high volumetric efficiency and low mechanical wear under continuous operation
• Integrated circulation pump rated at 38 L/min flow rate and 2.0 bar pressure—sufficient to overcome typical system backpressure in multi-instrument loops
• Dual-stage electronic temperature control with PID algorithm and real-time feedback from platinum RTD sensor (Pt100)
• Comprehensive safety architecture: compressor overheat protection, high/low pressure cut-off, phase sequence and phase loss detection, overcurrent tripping, and reservoir overtemperature interlock
• Robust mechanical construction: 650 × 550 × 920 mm footprint; DN25 inlet/outlet ports; IP54-rated electrical enclosure
• Industrial-grade components—including copper-aluminum finned condenser, stainless steel reservoir, and corrosion-resistant piping—optimized for long-term reliability in controlled lab environments

Sample Compatibility & Compliance

The TF-LS-2.5KW is compatible with any instrument requiring externally supplied chilled water within its thermal and hydraulic specifications. It supports integration into GxP-regulated workflows when deployed with documented operational qualification (OQ) protocols. While not inherently 21 CFR Part 11 compliant (as it lacks electronic audit trail or user access controls), its analog/digital hybrid control interface allows connection to external SCADA or LIMS systems for data logging and alarm relay. The unit conforms to IEC 61000-6-2 (EMC immunity) and IEC 61000-6-4 (EMC emissions) standards. All electrical wiring complies with IEC 60204-1 safety requirements for industrial machinery. As a domestically manufactured device certified to ISO 9001:2000 (now superseded by ISO 9001:2015), it meets baseline quality management expectations for laboratory support equipment used in academic research, QC labs, and pilot-scale development facilities.

Software & Data Management

The chiller operates via an embedded microcontroller-based control panel with LED display and tactile membrane buttons—designed for intuitive manual setpoint adjustment and status monitoring. No proprietary software is required for basic operation. For integration into automated environments, the unit provides dry-contact alarm outputs (for high-temp, low-flow, or compressor fault) and a 4–20 mA analog output signal proportional to actual reservoir temperature—enabling seamless interfacing with PLCs, DAQ systems, or building management platforms. Data logging, remote monitoring, and event history are supported only through third-party acquisition hardware and software; no internal memory or network interface is included. Users implementing this chiller in GLP or GMP settings are advised to validate temperature uniformity across the reservoir and verify pump performance under loaded conditions during IQ/OQ execution.

Applications

• Stabilizing laser diodes and solid-state lasers in spectroscopy and optical alignment setups
• Maintaining constant bath temperature for HPLC column ovens, detector cells, and autosampler coolers
• Providing consistent coolant supply to vacuum pump jackets and mass spectrometer ion sources
• Thermal conditioning of sample stages in XRD, DSC, and TGA instruments requiring active heat sinking
• Supporting continuous-duty rotary evaporation systems where condenser efficiency depends on stable coolant temperature
• General-purpose cooling for benchtop reactors, electrophoresis units, and centrifuge chillers in life science labs

FAQ

What is the recommended maintenance interval for the TF-LS-2.5KW chiller?

Routine inspection—including refrigerant line integrity check, condenser coil cleaning, and pump impeller inspection—is advised every 6 months under continuous operation. Compressor oil analysis and filter replacement should occur annually.
Can this chiller be used with deionized or glycol-water mixtures?

Yes—provided fluid conductivity remains >5 µS/cm and glycol concentration does not exceed 30% v/v. Higher concentrations may impair heat transfer and require recalibration of flow sensors.
Is the unit suitable for cleanroom environments?

The chiller itself is not ISO Class 5 rated; however, its low-vibration design and absence of internal aerosol-generating components allow installation outside cleanrooms with chilled water piped in via sealed conduits.
Does it support external temperature feedback control?

No—the control loop is internally referenced to the reservoir RTD only. External probe integration requires third-party PID controllers or PLC-based cascade logic.
What electrical infrastructure is required for installation?

A dedicated 380 V, 50 Hz, 5-wire (L1/L2/L3/N/PE) supply with minimum 16 A circuit breaker and proper grounding per IEC 60364 is mandatory. Voltage imbalance across phases must remain below 2%.