Tongzhou Weipu K-Series Dedicated Circulating Chiller for Washer Systems

Overview

The Tongzhou Weipu K-Series Dedicated Circulating Chiller is an integrated, air-cooled refrigeration system engineered specifically to support laboratory and industrial washer systems requiring stable, continuous coolant delivery. Operating on vapor-compression refrigeration principles, the unit maintains precise thermal control across a wide operational range (–40 °C to 35 °C), enabling compatibility with high-heat-load equipment such as ultrasonic cleaning baths, parts washers, and automated solvent recovery units. Its modular architecture—available in compact to mid-scale configurations—ensures consistent heat extraction without reliance on external chilled water infrastructure. The chiller’s design prioritizes thermal stability (±0.2 °C minimum fluctuation) and hydraulic reliability, making it suitable for applications where temperature drift or flow interruption could compromise cleaning efficacy, residue removal validation, or process repeatability in regulated environments.

Key Features

• Vertical, space-efficient chassis with electrostatic color powder coating—optimized footprint and corrosion resistance for lab and production floor deployment;
• Tool-free removable front panel for unobstructed access to condenser coils, facilitating routine maintenance and dust mitigation in non-HEPA environments;
• Stainless-steel centrifugal circulation pump delivering high head pressure (up to 4.5 bar) and flow rates up to 110 L/min, engineered for low acoustic emission (<62 dB[A]) and extended service life;
• Integrated liquid-level monitoring system comprising dual-mode visual indicator and electronic float switch, enabling real-time reservoir status feedback and automated low-level shutdown;
• Optional inline filtration modules—including polypropylene sediment cartridges (5–25 µm) and mixed-bed ion-exchange resin packs—to maintain conductivity <1 µS/cm and prevent scaling or particulate ingress in sensitive washer manifolds;
• Configurable hydraulic interface: standardized G½”, G¾”, and NPT ports with O-ring-sealed quick-connect fittings for seamless integration with OEM washer inlets/outlets;
• Multi-layer safety architecture: compressor soft-start delay (3-min), overcurrent cutoff, flow-loss detection, and dual independent high/low temperature alarms compliant with IEC 61000-6-2 EMC immunity requirements.

Sample Compatibility & Compliance

The K-Series chiller is validated for continuous-duty operation with aqueous, glycol-water (up to 35% v/v), and low-conductivity deionized water circuits. It meets structural and electrical safety standards per GB 4706.1–2005 (equivalent to IEC 60335-1) and electromagnetic compatibility per GB/T 17626 series. While not certified to UL 61010–1 or CE Machinery Directive out-of-box, its control logic and alarm hierarchy align with GLP and ISO/IEC 17025 documentation expectations for ancillary cooling infrastructure. Units configured with optional data-logging firmware support audit-ready event timestamps and parameter history export—facilitating traceability during equipment qualification (IQ/OQ) protocols.

Software & Data Management

Standard configuration includes a backlit LCD interface with intuitive menu navigation for setpoint adjustment, pump speed modulation, and alarm acknowledgment. Optional RS485 Modbus RTU or Ethernet TCP/IP communication enables integration into centralized SCADA or LIMS platforms. Firmware supports configurable logging intervals (1–60 min), local storage of ≥10,000 timestamped records (temperature, flow, pressure, fault codes), and CSV export via USB-A port. Remote monitoring interfaces comply with FDA 21 CFR Part 11 requirements when deployed with user-access controls, electronic signatures, and audit trail enablement—critical for pharmaceutical cleaning validation workflows.

Applications

• Thermal stabilization of ultrasonic and spray-type laboratory washers used in analytical sample preparation and glassware decontamination;
• Coolant supply for high-power laser cleaning systems requiring sub-ambient fluid temperatures to manage optical component thermal lensing;
• Process-critical cooling of industrial parts washers operating under ISO 8502-3 cleanliness verification protocols;
• Support of closed-loop solvent recovery units where condenser coil temperature directly impacts distillate purity and energy efficiency;
• Secondary cooling loop for vacuum chamber purge systems and plasma etch tool chill plates in semiconductor R&D facilities.

FAQ

Is the K-Series chiller compatible with deionized water loops?

Yes—when equipped with stainless-steel wetted components and optional ion-exchange filtration, the system maintains resistivity >1 MΩ·cm and prevents galvanic corrosion in DI circuits.
Can the unit operate continuously at –40 °C ambient temperature?

No—the chiller is rated for ambient operation between 5 °C and 40 °C; sub-zero ambient conditions require enclosure heating or indoor installation per manufacturer environmental specifications.
What is the maximum allowable coolant conductivity for long-term pump reliability?

For optimal stainless-steel pump longevity, sustained operation is recommended below 5 µS/cm; conductivity above 10 µS/cm accelerates erosion-corrosion and necessitates more frequent filter replacement.
Does the chiller support external temperature feedback control?

Yes—via optional 0–10 V analog input or Modbus register mapping, enabling cascade control using downstream process sensor signals.
Are calibration certificates provided with shipment?

Factory calibration reports (NIST-traceable reference sensors) are available upon request; on-site calibration services must be scheduled separately through authorized Tongzhou Weipu technical partners.