Sanitary evaporator assembly

An evaporator assembly for an ice maker, the evaporator assembly comprising:

• an evaporator pan comprising a back wall and left, right, top and bottom sidewalls extending from the back wall;
• a freeze plate located within the evaporator pan;
• refrigerant tubing thermally coupled to the back wall of the evaporator pan opposite the left, right, top and bottom sidewalls;
• and
• an evaporator housing attached to the evaporator pan and defining an enclosed cavity behind the back wall of the evaporator pan, the evaporator housing containing the refrigerant tubing inside the enclosed cavity;
• wherein the enclosed cavity is sealed water tight.

An ice formation device for an ice maker, the ice formation device comprising:

• an evaporator body having a front surface and a back surface, the front surface configured for exposure to water for freezing the water into ice;
• refrigerant tubing on the back surface of the evaporator body for absorbing heat from the evaporator body;
• and
• a layer of insulation formed on the refrigerant tubing and the back surface of the evaporator body;
• wherein the layer of insulation comprises an integral layer of cured-in-place insulation that conforms to the refrigerant tubing and the back surface of the evaporator body and is impervious to water such that the layer of insulation has no joints through which water can leak onto the back surface of the evaporator body.