What is an EC Motor?
EC Motors are a specialty motor used primarily in the evaporator fans of commercial refrigeration walk-in coolers and freezers. They are more energy efficient that shade-pole motors commonly found in walk-in coolers and freezers. EC Motors can also be used in any air-moving application demanding high efficiency and dependability with output ratings up to 74.6 watts. EC Motors have an electronic commutation control to make them turn.
What is an EC Motor Controller?
EC Motor Controllers work in conjunction with EC Motors as an energy saving device designed for commercial refrigeration walk-in coolers and freezers. They function by sensing the operational status of the cooling system and controlling the speed of the evaporator fans.
How do EC Motor Controllers work?
The purpose of a refrigeration compressor and related equipment is to pump heat out of a box. Often, more than 30% of that heat is generated by the evaporator fan motors. EC Motor Controllers reduce this heat load approximately 75-80% by lowering the voltage to the evaporator fan motors when the box is not being actively cooled. The result is a significant saving in operation costs. The dramatic energy saving produced by EC Motor Controllers have been confirmed by more than ten years of extensive laboratory and field testing and satisfied customers.
Won’t lowering the voltage to the fan motors cause the motors to overheat?
Lowering the voltage on a compressor motor, or any motor driving a fixed load, will cause the motor to draw excess current and overheat. But, lowering the voltage on a motor with a variable load, such as a fan, will not cause the motor to draw more current. This is because, as the motor power is reduced, the motor turns slower, and the slower rotation of the fan reduces the load which the motor must drive. Thus the motor does not draw more current. Lab tests confirm that when operating fan motors at lower voltages, they draw less current and produce significantly less heat. This reduces the operating cost of both the fan motors and the compressor.
Are EC Motor Controllers safe?
EC Motor Controllers do not interfere with the refrigeration cycle or directly control the compressor. Thus it cannot harm the compressor or any of the other equipment. Because operation of EC Motor Controllers cause the compressor duty cycle to be reduced, it can only have a beneficial effect on the equipment and should extend its life accordingly.
Will EC Motor Controllers interfere with the refrigeration system?
EC Motor Controllers follow the thermostat’s cycling of the system to control the speed of the fans in the evaporator coils, and does not directly affect any other portion of the refrigeration system. The refrigeration system continues to function normally.
Will EC Motor Controllers cause icing?
EC Motor Controllers will not contribute to any tendency for the evaporator coils to ice up. Because it operates the fans at high speed whenever the system is in cooling mode, the evaporator heat transfer characteristics are unchanged. In fact, EC Motor Controllers have an Ice Sensor feature, which will continue to operate the fans at high speed if ice is detected in the coils.
Where can I use EC Motor Controllers?
Single-phase EC Motor Controllers are designed to be used in walk-in coolers and freezers typically found in food-service businesses, florists, and markets. Reach-in coolers with storage behind the doors can also benefit from using EC Motor Controllers. Industrial-size coolers normally use three-phase EC Motor Controllers. EC Motor Controllers are not applicable to HVAC systems, home air-conditioners, or small, stand-alone reach-in boxes.
How long does it take to install EC Motors and EC Motor Controllers?
Installation time is depends on how many units are being installed. Typically a small facility with one or two walk-in boxes will take one day for install. Only qualified persons, familiar with electrical wiring, should install EC Motors and EC Motor Controllers.
Will temperature stratification become a problem?
Extensive testing, and actual customer experience, verify that there is more than adequate air movement to prevent stratification with the fans running at low speed under EC Motor Controller control.
How much will upgrading to EC Motors, EC Motor Controllers and Anti-Sweat Heater Controllers save me??
Upgrading to EC Motors in walk-in coolers and freezers can typically save about 50% more energy when compared to the shaded-pole motors they replace. Adding the EC Motor Controller can save you an additional 25-35% in energy, for an overall energy savings of up to 85%. Anti-Sweat Heater Controllers use up to 80% less energy.
Do you offer warranties on your products?
We offer a five-year warranty on all the equipment we sell/distribute.
What is my return on investment?
The savings resulting from use of EC Motors and EC Motor Controllers will depend on the cost of electricity in your area. As an example, for an electricity cost of 12 cents per kilowatt-hour, a typical payback time for EC Motors paired with Single-Phase EC Motor Controllers is about 18 months; for EC Motors paired with Three-Phase EC Motor Controllers, about 12 months. Overall, the typical ROI for the two types of technology paired together is 18-24 months.
What is an Anti-Sweat Heater Controller?
Anti-Sweat Heater Controllers are a technology used to maximize the energy efficiency of glass display doors typically found in retail stores. They ensure that all areas of the display case remain sweat, frost and ice free. Get more info in our Tech Data section.
How do Anti-Sweat Heater Controllers work?
Anti-Sweat Heaters are activated when the threat of condensation is detected. The two-channel technology operates door heaters independently from frame and mullion heaters. They can easily be installed in existing cases with no additional wiring needed. Get more info in our Tech Data section.