MK 600 W Screw-Type Circulating Chiller

Overview

The MK 600 W Screw-Type Circulating Chiller is an industrial-grade, precision-engineered refrigeration system designed for continuous, stable thermal management in demanding laboratory and pilot-scale research environments. Utilizing a hermetically sealed twin-screw compressor and R22 refrigerant (in compliance with legacy industrial refrigeration standards where permitted under local regulatory frameworks), this chiller delivers consistent cooling capacity through a closed-loop glycol–water or deionized water circulation system. Its core function is to maintain precise temperature setpoints—typically between +5 °C and +35 °C—for analytical instruments requiring active heat dissipation, including ICP-MS, NMR spectrometers, laser systems, vacuum pumps, and high-power electrophoresis units. Unlike compact benchtop chillers, the MK 600 W is engineered for scalability, modularity, and long-term operational reliability in centralized cooling infrastructures.

Key Features

• Screw-type compression architecture ensures high volumetric efficiency, low vibration, and extended service life—even under partial-load or variable-flow conditions.
• Modular footprint design allows side-by-side installation without thermal or acoustic interference, supporting dense equipment layouts in constrained utility rooms or technical basements.
• Independent refrigerant circuits enable staged compressor and fan operation, optimizing energy use via load-matching control logic and reducing peak electrical demand.
• Hydraulically robust pump manifold supports both open-loop (e.g., reservoir-fed condenser loops) and closed-loop (e.g., jacketed reactor or calorimeter circuits) configurations, with pressure-rated piping up to 6 bar (gauge).
• Integrated sequential timer balances runtime across multiple units in multi-chiller arrays, extending component longevity and ensuring uniform wear distribution across compressors, expansion valves, and condenser fans.
• Standard RS485 Modbus RTU interface enables integration into building management systems (BMS) or central SCADA platforms for remote monitoring of discharge temperature, flow rate, suction pressure, and fault codes.

Sample Compatibility & Compliance

The MK 600 W is compatible with standard laboratory coolant formulations—including 20–30% ethylene glycol/water mixtures, propylene glycol solutions, and deionized water—subject to pH stabilization and corrosion inhibitor dosing per OEM instrument specifications. It meets CE marking requirements for electromagnetic compatibility (EMC Directive 2014/30/EU) and low-voltage safety (LVD Directive 2014/35/EU). While R22 usage is restricted under the Montreal Protocol Annex A Group I substances, the unit complies with EU Regulation (EC) No 1005/2009 for existing installations where national exemptions apply, and is suitable for retrofit or replacement in legacy infrastructure pending transition to approved alternatives (e.g., R407F or R513A). It supports GLP-compliant operation when paired with validated data loggers and audit-trail-enabled controllers.

Software & Data Management

The chiller operates via a programmable logic controller (PLC)-based interface with a backlit LCD display and tactile membrane keypad. All critical process variables—including inlet/outlet temperatures, flow rate (via calibrated turbine sensor), evaporator superheat, and compressor amp draw—are logged at user-configurable intervals (1–60 min) to internal non-volatile memory (≥10,000 records). Optional Ethernet-to-Modbus gateway modules support CSV export and time-stamped data ingestion into LIMS or ELN platforms. Alarm events—including low-flow, high-head pressure, refrigerant leak detection (via optional electronic sensors), and phase-loss—trigger relay outputs and on-screen notifications with timestamped event history. Data integrity adheres to ALCOA+ principles when used in regulated environments; full audit trail functionality requires third-party validation of firmware version 3.2 or higher.

Applications

• Stabilization of high-field NMR magnet cryocoolers and probe preamplifiers
• Thermal regulation of X-ray diffraction (XRD) source housings and detector assemblies
• Cooling of plasma torches and RF generators in ICP-OES/ICP-MS instrumentation
• Heat rejection from high-power laser diodes and ultrafast oscillator cavities
• Temperature control in reaction calorimetry (RC1, EasyMax) and jacketed glass reactors
• Support of continuous-flow chemistry platforms requiring sub-ambient solvent conditioning

FAQ

Is R22 refrigerant still legally usable in laboratory chillers within the EU?
Yes—under EC No 1005/2009, R22 may be used exclusively for servicing existing equipment until 2030, provided it is recovered, recycled, or reclaimed by certified technicians. New installations require alternative refrigerants.
Can the MK 600 W integrate with LabVIEW or Python-based automation frameworks?
Yes—via its native Modbus RTU protocol over RS485, third-party drivers enable bidirectional communication for setpoint adjustment, status polling, and alarm acknowledgment.
What is the maximum allowable working pressure for the hydraulic circuit?
The primary coolant loop is rated for continuous operation at 6 bar (gauge); burst pressure exceeds 12 bar per EN 13445-3 hydrostatic test certification.
Does the unit support glycol concentration monitoring?
No—glycol percentage must be verified externally using refractometry or density measurement; the chiller monitors only temperature and flow.
Is remote firmware update capability available?
Firmware updates require physical USB connection and authorized service technician access; no over-the-air (OTA) update functionality is implemented for cybersecurity compliance.