Controls Compressor to Maintain an Ice Bank of Desired Thickness. Excellent for use on Refrigerated Cabinets Where an Ice Bank is Built as a Means of Storing Refrigeration FEATURES • Specially designed element controls ice bank thickness to within 1/16”. • Thickness of ice determined by location of sensing element to evaporator coil. • Control stops compressor when ice bank completely covers sensing element and starts compressor when ice bank begins to melt. • Dustproof steel case with top and bottom knockouts. • Two mounting straps included. • Hydraulic action element — No leveling required.