AUWII® AR Series Industrial Circulating Chiller

Overview

The AUWII® AR Series Industrial Circulating Chiller is an integrated, air-cooled refrigeration system engineered for stable, continuous thermal management of medium-to-large industrial and laboratory equipment. Designed around a vapor-compression refrigeration cycle with scroll or semi-hermetic compressors (model-dependent), the AR Series delivers precise temperature control across a wide operational envelope (5–35 °C) while maintaining ±1 °C stability under dynamic load conditions. Its dual-plate finned condenser—featuring hydrophilic blue-coated aluminum fins—optimizes heat rejection in ambient environments up to 40 °C, with side-intake and top-exhaust airflow architecture minimizing spatial footprint and improving service accessibility. The chiller operates as a closed-loop secondary coolant system, circulating deionized or treated water/glycol mixtures through external processes such as laser sources, ICP-MS torches, plasma etchers, CNC spindles, or spectrophotometer housings. Unlike modular or split-system chillers, the AR Series integrates compressor, condenser, expansion device, evaporator, reservoir, pump, and control logic into a single, factory-aligned chassis—reducing field commissioning time and eliminating inter-unit refrigerant line integrity risks.

Key Features

• Robust air-cooled condenser with hydrophilic blue-coated aluminum fins for enhanced corrosion resistance, dust tolerance, and long-term thermal efficiency.
• Dual operating modes: “Setpoint Control” for fixed-temperature operation and “Ambient Tracking Mode” enabling proportional offset from ambient temperature—ideal for processes requiring thermal drift compensation.
• Multi-layer protection architecture including high/low pressure cutouts, phase failure detection, flow loss alarm, reservoir low-level cutoff, and overtemperature shutdown with fault-code-based diagnostics.
• Industrial-grade circulating pump with adjustable head (19–55 m H₂O) and flow rate (1–32 m³/h), supporting both low-resistance lab loops and high-backpressure industrial manifolds.
• Modular design supports optional dual-circuit configuration with sequential start-up, automatic load balancing, and independent temperature setpoints per loop.
• Standard dry-contact (normally closed) alarm outputs and 0–10 V / 4–20 mA analog interfaces enable seamless integration into PLC-based facility monitoring systems or CNC machine tool safety interlocks.
• Optional inline particulate filtration (5–10 µm) and conductivity monitoring kits available for applications demanding ultra-low particle count or resistivity-controlled coolant (e.g., semiconductor metrology tools).

Sample Compatibility & Compliance

The AR Series accommodates a broad range of coolant media—including deionized water, 10–30% ethylene glycol/water blends, and inhibited propylene glycol solutions—compatible with stainless steel (304/316), EPDM, and Viton-wetted components. All units comply with GB/T 10870–2014 (Chinese national standard for liquid chillers) and meet CE marking requirements under the EU Machinery Directive 2006/42/EC and Low Voltage Directive 2014/35/EU. Electrical insulation, grounding continuity, and enclosure IP54 rating (standard) ensure safe deployment in non-classified industrial zones. For regulated environments, optional audit-trail-enabled controllers support 21 CFR Part 11–compliant electronic recordkeeping when paired with AUWII’s LogView™ software suite—facilitating GLP/GMP process validation and IQ/OQ documentation.

Software & Data Management

Standard operation uses a high-contrast 4.3-inch TFT touchscreen HMI with multilingual UI (English, Spanish, German, Chinese), real-time trend logging (72-hour buffer), and password-protected parameter access levels (Operator, Technician, Administrator). Optional LogView™ PC software enables remote monitoring via Ethernet or RS485 Modbus RTU, exporting CSV-formatted temperature/flow/pressure logs with ISO 8601 timestamps. Data integrity features include cyclic redundancy checksums on stored logs, write-protection for historical records, and configurable alarm escalation (email/SNMP trap). Firmware updates are performed via USB stick with SHA-256 signature verification to prevent unauthorized modification.

Applications

• Stabilizing optical cavities and high-power diode lasers in R&D photonics labs.
• Thermal conditioning of ICP-OES/ICP-MS plasma torches and RF generators to minimize spectral drift.
• Cooling high-speed CNC spindle motors and EDM dielectric fluid systems in precision machining cells.
• Supporting vacuum chamber wall cooling in PVD/CVD thin-film deposition tools.
• Maintaining constant bath temperature for accelerated weathering testers (ASTM G154, ISO 4892-3).
• Providing secondary coolant loops for MRI quench pipe thermal management and PET detector array stabilization.

FAQ

What is the maximum allowable ambient temperature for continuous operation?
The AR Series is rated for continuous duty at ambient temperatures up to 40 °C (104 °F) with full capacity retention, provided adequate ventilation clearance (≥500 mm on all sides) is maintained.
Can the chiller operate with 30% propylene glycol solution?
Yes—glycol concentrations up to 35% v/v are supported; however, refrigeration capacity derating (typically 8–12% at 30%) and increased pump power consumption must be accounted for during system sizing.
Is remote start/stop and setpoint adjustment possible via Modbus?
Yes—Modbus RTU over RS485 supports full read/write access to setpoints, pump speed, operating mode, and alarm status registers (function codes 03h/06h/10h).
Does the unit include a built-in water level sensor and auto-shutoff?
All models integrate ultrasonic or float-switch-based reservoir level monitoring with immediate pump shutdown and latched alarm upon low-level detection.
What certifications are included with shipment?
Each unit ships with Factory Acceptance Test (FAT) report, CE Declaration of Conformity, RoHS compliance statement, and ISO 9001:2015-certified manufacturing traceability documentation.