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    EC Motors are a proven, main stream technology and have been studied extensively throughout the US. This technology is employed within the refrigeration industry in order to reduce energy consumption at the evaporator fans. ECMTEK takes this a step further with its patented motor controller and is able to deliver significantly increased energy savings.

    The ECMTEK controller works in conjunction with 2 speed EC (electronically commutated) motors to maximize their efficiency and nearly double the energy savings provided by EC motors alone. The EC Advanced Motor Controller functions by sensing the operational status of the cooling system, and controls the speed of the EC evaporator fans. When the thermostat is satisfied and the compressor cycles off, the ECMTEK controller will sense the compressor off cycle and will switch the motors to the slower speed.

    It is a fact that all of the electrical power which is used by the fan motors ends up as 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.

    Although this results in an additional savings in evaporator fan motor energy consumption, the reduction in fan motor heat generated causes a significant reduction in refrigeration operation, saving enough energy at the compressor to almost double the savings provided by the EC motors alone.

    Although this results in an additional savings in evaporator fan motor energy consumption, the reduction in fan motor heat generated causes a significant reduction in refrigeration operation, saving enough energy at the compressor to almost double the savings provided by the EC motors alone.

    The Controller consists of three major components:

          1.  Speed Controller    2. Temperature Differential Sensors   3. Ice Sensor 

    The EC Motor Controller unit is normally mounted inside the wiring end of the evaporator. Three cables connect the Controller into the evaporator system. One cable is wired to the power connections, one to the Differential Sensors and one to the Ice Sensor.

    The ECMTEK EC Motor Controller is designed to be easily installed when upgrading to EC motors. Installation typically takes about 45 minutes (as does each EC Motor), and can be done by any competent electrician or refrigeration technician. In addition to its energy saving qualities, the ECMTEK EC Motor Controller also provides some intrinsic advantages. The low speed of the fans results in lower evaporation from sensitive stored foods, and the lower noise levels contribute to worker efficiency, and a more pleasant work space.

    The Temperature Differential Sensors (TDS) monitor the temperature difference across the evaporator expansion valve. This difference in temperature indicates whether or not refrigerant is flowing through the evaporator. The Controller commands the fans into high speed when refrigerant is flowing, into low speed when it is not.

    The Ice Sensor is used to determine if the evaporator has developed an ice buildup. If ice is detected, the fans are operated in high speed until the ice has dissipated. The ice sensor is not used on freezer installations.

  • - The TDS Sensor and the Ice Sensor interconnect cables are low voltage cables and require no conduit. The highest voltage in these cables is 12 volts.
  • - The Low speed for the EC motor is typically 600 RPM, a speed which our engineers have determined to provide the best balance between savings and air flow.

ECMTEK also has an option known as the ARC - Advanced Refrigeration Controller.  Click here for more info.

 

 

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ECMTEK Benefits

  • Reduction in Energy Cost
  • Reduction in CO²Emissions 
  • Reduction in Fan Motor Heat
  • Qualifies for Utility Rebates
  • 12-18 month ROI
  • Professional Installation