Liquid cooler LRC-50 series

for refrigerationlaboratoryair-cooled

Description
Closed circulating chiller designed to prevent contamination of the circulating fluid and extend the service life of the heat-transfer medium. Suitable for laboratory, process cooling and low-temperature testing applications that require stable control down to −50°C.

Features

• Closed-cycle piping minimizes contamination of circulating fluid and extends liquid lifetime.
• Multi-level safety protections for reliable operation.
• Quality brand compressors; cascade refrigeration technology for deep cooling.
• User-oriented layout for ease of operation and maintenance.
• Efficient dual-condenser system.
• Computer-based cascade temperature controller with 0.1°C resolution; range −50°C to 30°C; PT100 sensor.
• Low-temperature stability ensured by optimized cold-end design.
• Configurable compressor on/off differential.
• Ambient temperature monitoring to prevent excessive internal temperature rise.
• Multiple alarms: over-temperature, sensor fault, high pressure, compressor overheat, liquid level.
• Power-on delay protection and three-stage cascade protectors.
• Protective grounding for all components.
• Fully closed circulation: prevents vapor formation at low temperature and preserves coolant purity; supports long service life even if ice forms.
• High-performance circulation pump rated for continuous 24/7 operation.
• Plate heat exchanger for improved heat-transfer efficiency.

Technical Parameters (table)
Model: LRC-5018 | LRC-5040 | LRC-5062 | LRC-5090 | LRC-50A1 | LRC-50A2
Medium Temperature Range: -50°C ~ 30°C | -50°C ~ 30°C | -50°C ~ 30°C | -50°C ~ 30°C | -50°C ~ 30°C | -50°C ~ 30°C
Temp. control: ASET multifunctional controller (all models)
Optional temp. control: Heat-conducting medium outlet temp. control
Communication protocol: MODBUS RTU Protocol, RS485 Interface
Temp. feedback: Heat-conducting medium temperature feedback PT100
Cooling capacity (-10°C): 1.5 kW | 3.2 kW | 4.5 kW | 6.2 kW | 8.3 kW | 12 kW
Cooling capacity (-20°C): 1.2 kW | 2.7 kW | 3.8 kW | 5.5 kW | 7 kW | 10 kW
Cooling capacity (-40°C): 0.4 kW | 0.75 kW | 1.15 kW | 1.5 kW | 2.1 kW | 3 kW
Circulation pump (typical): Max20L/min 0.7BAR | Max20L/min 0.7BAR | Max35L/min 1BAR | Max35L/min 1BAR | Max75L/min 1BAR | Max75L/min 1BAR
Capacity of liquid storage: 15L | 20L | 25L | 30L | 35L | 45L
Compressor: Tecumseh | Copeland | Copeland | Copeland | Copeland | Copeland
Evaporator: Copper tube (all models)
Operating controller: 7-inch color touch screen; temperature curve record; Excel-format export
Security protection: Self-diagnosis; freezer overload protection; high pressure switch; overload relay; thermal protection device; other security protections
Refrigerant: R-404A
Connection size: DN-15 | DN20 | DN20 | DN20 | DN20 | DN-20
Product size (air-cooled): 400×600×1050 mm | 500×680×1350 mm | 550×680×1450 mm | 550×680×1550 mm | 620×680×1650 mm | 750×750×1750 mm
Weight (air-cooled): 145 kg | 185 kg | 230 kg | 275 kg | 340 kg | 380 kg
Power: AC220V 50Hz 2.2kW (max) | AC380V 50Hz 3.5kW (max) | AC380V 50Hz 4.5kW (max) | AC380V 50Hz 6kW (max) | AC380V 50Hz 7kW (max) | AC380V 50Hz 9kW (max)
Material: Cold rolled steel painting (standard)
Optional pump choices: 35L/min 2.5bar; 50L/min 2.5bar; 110L/min 2.5bar
Optional material: SUS304 stainless steel
Optional (pressure): Max. 6 bar circulating pump available
Optional power: 220V 60Hz three-phase; 440–480V 60Hz three-phase
Remark: Can make larger capacity of water storage as required.

Technical specifications

• Product type: Closed circulating chiller (LRC-50 Series).
• Temperature range: -50°C to 30°C; resolution 0.1°C; PT100 sensor.
• Controller: ASET multifunctional controller with 7-inch color touchscreen and temperature curve recording/export.
• Cooling technology: Cascade refrigeration; dual-condenser system; copper-tube evaporator.
• Compressors: Quality brand compressors (Tecumseh or Copeland depending on model).
• Circulating pump: Multiple flow/pressure options (typ. up to 75 L/min; optional up to 110 L/min, up to 2.5 bar); designed for continuous operation.
• Cooling capacity examples: up to 12 kW (@ -10°C) depending on model; values shown for -10°C, -20°C and -40°C operating points.
• Liquid storage capacity: from 15 L up to 45 L depending on model; larger reservoirs available on request.
• Communication: MODBUS RTU (RS485).
• Safety & protections: multiple fault alarms, self-diagnosis, overload and thermal protection, high-pressure switch, power-on delay protection, grounding of all parts.
• Refrigerant: R-404A.
• Construction: Cold-rolled steel painted standard; SUS304 optional.
• Connection sizes and dimensions: DN15–DN20 connections; product sizes and weights vary by model (see table).
• Power supply options: standard AC220V 50Hz or AC380V 50Hz; optional 60Hz three-phase supplies.