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Roller air cooler with factory installed superheat control system

Selecting, installing and parameterizing a suitable expansion valve for a refrigeration system is a challenge that costs a lot of time and money due to the many different system parameters. Walter Roller offers a pre-installed plug-and-play solution incl. superheat controller and el. expansion valve for its commercial refrigeration evaporators, regardless of the refrigerant used.

EVD-ice: E-Valve solution pre-parameterized with 40 different refrigerants

Since thermostatic E-Valves requires a sensor charge that matches the refrigerant, the large variance of valves that has resulted up to now has made factory installation impossible. A technical alternative, which can be used flexibly independent of the refrigerant used, is the EVD-ice control system within Walter Roller air coolers.

The factory installed Carel control system in the air cooler consists a proportional electronic expansion valve, the watertight, fully encapsulated superheat controller, the Ultracap module, and a pressure and temperature sensor and is pre-parameterized for 40 different refrigerants. CO2 is of course also included.  The EVD-ice is available as installed control system in selected Roller air coolers.

 

Energy-efficient and sustainable solution for commercial refrigeration

Regardless of the time saved in the selection of components, the advantages of an electronic expansion valve are undisputed: precise control of the refrigerant flow, optimum charge of the evaporator, energy savings through reduced compressor running times and sliding suction pressures. For the refrigerated goods, lower temperature differences and shorter cooling times result in increased quality.

 

Suitable for use in various evaporator designs

The pre-installed EVD-ice control is offered in the ceiling air cooler DLK, the cubic high-performance air cooler FHV/T and the dual discharge air cooler DHN, which blows out on both sides. These quality evaporator series are field proven in many applications and equipped with the typical Roller features (EC fan technology; highly efficient, in-line tube configuration and large heat exchanger surfaces). They are available in a performance range from 0.5 to 15 kW.