MAXA HWA-A-FC 53 kW-174kW

MAXA HWA-A-FC 53 kW-174kW View Large Image

HWA-A/FC 0252÷04171

53 kW÷174 kW

Air cooled liquid chillers units with “Free-Cooling” section

HWA-A/FC cooling only


  • Frame. Self-supporting galvanized steel frame further protected with polyester powder painting. Easy to remove panels allow access to the inside of the unit for maintenance and other necessary operations.
  • Compressors. Scroll with oil sight glass. They are fitted with internal overheat protection and crankcase heater, installed on rubber shock absorbers.
  • Fans. Axial fans directly coupled to a three phase electric motor with external rotor. A safety fan guard is fitted on the air flow discharge.
  • Condenser Made up of a finned battery with copper pipes and aluminium fins. Circuits on the refrigerant side are made to create one circuit in models 0252÷03128 and two independent circuits in models 04149÷04171.
  • Evaporator AISI 316 stainless steel braze welded plate type: With one circuit on the refrigerant side and one on the water side in models 0252÷03128; with two independent circuits on the refrigerant side and one on the water side in models 04149÷04171.
  • Electrical board. Includes: main switch with door safety interlock, fuses, overload protection for compressors and thermos contacts for fans, speed governor for fans, interface relays and electrical terminals for external connections.
  • Microprocessor for automatic control of the unit allowing continuous display of the operational status of the unit, control set and real water temperature and, in case of partial or total block of the unit, indication of security device that intervened further to manage Free-Cooling system.
  • Refrigerant circuit. Produced in copper tubing, all models have the following components: thermostatic expansion valve with external equalisation, dehydrator filter, level and humidity indicator, high and low pressure gauges (fixed calibration).
  • Water circuit. Includes: heat exchanger, 3-way valve, evaporator, temperature sensor, antifreeze sensor, differential pressure switch, manual air release valves and water drain.
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