Modular Water-Cooled Fluid Chillers

MWC chillers are water-cooled 10-ton modules; up to 5 units can be configured in a parallel arrangement to provide increased cooling capacity. The modules are available in two versions:

  • Single compressor version with hot gas bypass valve for tight temperature control
  • Dual compressor version for energy savings

The compact size allows each unit to fit comfortably through doorways, making installation possible in locations that would be inaccessible with a single, large chiller. Both the condenser and evaporator are stainless steel brazed plate heat exchangers, with a water (condensing) control valve available as an option. Single units can be equipped with an internal condenser pump and or evaporator pump as an option. Multiple units are managed by a master controller.

MWC water cooled chillers

FLUID CIRCUIT

  • Standard models include a stainless steel, brazed plate evaporator
  • Fluid differential pressure switch protects evaporator against low flow condition
  • Optional pump for evaporator and/or condenser
  • Optional manifolds for joining multiple modules
  • Ability to use glycol mixtures up to 50%

REFRIGERATION CIRCUIT

  • Manufactured with high-quality materials following rigorous brazing procedures and conforming to international standards (PED 2014/68/EU)
  • Environmentally friendly R410A refrigerant
  • Refrigerant sight glass with moisture indicator and filter-dryer
  • Thermostatic expansion valve regulates refrigerant flow to evaporator
  • High and low pressure transducers and switches
  • High and low pressure gauges
  • High and low pressure access fittings for maintenance and troubleshooting

COMPRESSOR

  • Single or dual hermetic scroll compressors chosen for reliability and efficiency
    • Single Compressor version with hot gas bypass valve for tight temperature control
    • Dual Compressor version for energy savings at partial load conditions
  • Mounted on rubber isolators for noise reduction
  • Scroll compressors are especially quiet and can handle liquid return without damage
  • Protected against reverse rotation by an electronic phase monitor
  • Crankcase heater prevents liquid slugging on start-up

EVAPORATOR

  • Stainless steel, brazed plate evaporators are compact and highly efficient
  • Evaporators are protected against freezing and low flow by the microprocessor controller
  • Y-strainer installed on evaporator inlet to protect against particle contamination
  • Optional evaporator pump includes pressure gauge, contactor, and motor overload

CONDENSER

  • Stainless steel, brazed plate condensers are compact and highly efficient
  • Optional condensing control valve regulates water flow for steady refrigerant pressure
  • Optional condenser pump includes pressure gauge, contactor, and motor overload

ELECTRICAL PANEL

  • Manufactured in compliance with international standards (EN 60204) using UL-recognized components
  • Electrical cabinet constructed of powder-coated galvanized steel
  • Disconnect switch with door lock prevents access to panel when energized

MICROPROCESSOR CONTROLLER

  • Optimizes unit performance and maintains fluid temperature
  • Controls and displays the fluid temperature
  • Turns the compressors on and off while protecting against short cycling
  • Turns the pump(s) on and off
  • Protected by a watertight cover
  • Displays key operating parameters and the following alarm conditions
    • High and low refrigerant pressure
    • High refrigerant discharge temperature
    • Low fluid differential pressure
    • Incorrect phase sequence
    • Compressor or pump motor protector tripped
    • Temperature probe or pressure sensor failure
    • High fluid temperature
    • Evaporator anti-freeze
  • Optional master controller manages up to five modules

UNIT CONSTRUCTION AND MAINTENANCE

  • Cabinet frame and panels are powder-coated and suitable for outdoor installation
  • Open base design for convenient maintenance and repair (side panels are optional)
  • All fasteners are stainless or zinc-plated steel for corrosion resistance
  • Protection to IP54 standard on all models; suitable for outdoor installation
  • Designed for ease of operation and maintenance

FACTORY TESTING OF EVERY MWC UNIT

  • Pressurization and helium leak detection of refrigeration circuit
  • Pressurization and leak testing of fluid circuit for evaporator and condenser
  • Chiller performance and power consumption at full load
  • Proper operation of all controls, safety devices, and alarms
  • Electrical tests according to international standards (EN 60204)