H50/150 SMART SERIES WATER CHILLERS - USER MANUAL

Importance of the topic

Laboratory applications in chemistry, life sciences and industrial quality control often demand precise temperature control of process fluids. Recirculating water chillers maintain stable cooling conditions, protect sensitive equipment and improve experiment reproducibility. The H50/150 SMART series offers a compact and versatile solution for a wide range of cooling needs, from benchtop instruments to high-heat exchangers.

Aims and overview

This user manual describes the design, operation and maintenance of the H50 and Smart H150 series recirculating chillers. Key objectives include:

• Providing continuous cooling fluid at defined temperature and flow rate
• Detailing safety rules, installation and operation procedures
• Explaining alarm handling, routine maintenance and troubleshooting

Methodology and instrumentation

Each unit integrates these main components:

• Air-cooled refrigeration system with R134A or R404A refrigerant
• Plate heat exchanger for efficient thermal transfer
• Recirculating magnetic drive pump (models PR4 or PRG8) to ensure leak-free operation
• Stainless-steel reservoir with low-level sensor
• Microprocessor-based PID temperature controller (LCD or touchscreen)
• PT100 sensor for accurate temperature measurement

Optional flow switch or analog flow sensor can be installed. Power supplies range from 115 V single-phase to 400/440 V three-phase.

Main features and performance

Key specifications across models include:

• Temperature control range from −20 °C up to +35 °C
• Temperature stability between ±0.1 °C and ±0.3 °C
• Cooling capacities from 500 W to 9 000 W at 25 °C
• Reservoir volumes from 1.8 L to 22 L
• Flow rates up to 13 L/min and maximum pressures around 1 bar

Touch controller interface presents real-time readings, setpoints, alarms and diagnostic menus for quick access. Safety interlocks guard against low fluid level, over-pressure, over-temperature and flow interruption.

Benefits and practical applications

These chillers deliver:

• Stable thermal environment for chromatography, spectroscopy, laser cooling and reactor jackets
• Easy integration via standardized ½" NPT plumbing
• Low maintenance design with accessible condenser and drain port
• User-friendly interface with programmable limits and self-diagnostics
• Enhanced lab safety through enclosed fluid circuits and automatic alarms

Instrumentations used

The system comprises:

• Refrigeration compressor and condenser
• Plate heat exchanger
• Magnetic drive circulator pump (PR4 or PRG8)
• Reservoir with float sensor
• Microprocessor controller (LCD or capacitive touchscreen)
• Pressure relief valve on Smart H150

Future trends and applications

Advances likely to impact recirculating chillers include:

• Integration of IoT and remote monitoring capabilities
• Use of eco-friendly refrigerants with lower global warming potential
• Energy-saving variable-speed compressors and pumps
• Predictive maintenance driven by embedded diagnostics and data analytics
• Modular designs for rapid scaling in pilot plants and industrial setups

Conclusion

The H50 and SMART H150 series represent a robust and flexible platform for precision temperature control in laboratories and light industrial processes. Their blend of accurate PID regulation, comprehensive safety features and straightforward maintenance makes them well suited for demanding applications. By following the guidelines in this manual, users can ensure reliable performance, extend service life and maintain optimal process conditions.