Introducing the Three-Phase Frigitek

The Frigitek is an innovative product, designed to save energy used in industrial refrigerators and freezers. Tests in actual operating refrigerators show that it can save at least 30 percent, and as much as 70 percent of the operating cost of the evaporator fan motors in a typical industrial refrigerator.

The Frigitek functions by sensing the operational status of the cooling system, and controlling the speed of the evaporator fans. It has been determined that the evaporator fan motors contribute a significant amount of heat inside the refrigerated space. By operating the fans at a low speed when no cooling is called for, and at high speed only when the system is actively cooling the refrigerator, much less heat is introduced into the refrigerator. In three-phase systems, this also results in a significant saving in evaporator fan motor power, while the reduction in fan motor heat generated causes the refrigeration system to operate less, saving additional energy at the compressor.

The Three-Phase Frigitek operates over a wide range of input voltages, from 208 VAC to 460 VAC. It is factory configured for the evaporator and no adjustments are necessary during the installation. It is not a variable- frequency drive (VFD).

The Three-Phase Frigitek is designed to be easily installed with new refrigerators or freezers, or to be retrofit onto existing units. Installation typically takes about two hours, and can be done by any competent electrician or refrigeration technician. The Power Unit assembly is usually mounted on the side wall or the ceiling of the Controller Module refrigerator.

In addition to its energy saving qualities, the Frigitek also has some protection features. A phase-drop monitoring circuit protects the motors against single-phasing,

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