tube 42 into the rod 38 water passing through the input tube is controlled by a float valve 62 as the rod 38 is filled water passes through the holes of the rod into the surrounding vertical core 32 as the vertical core 32 is filled water passes through the holes of the vertical core into the surrounding vertical chambers 36 this process continues until all of the vertical chambers 36 are filled with water the water level in the vertical chambers 36 of the evaporator 10 is synchronized to the water level in the remote reservoir 60 when the water level in the evaporator reaches a point just below the chute 14 a float valve 62 in the reservoir halts the flow of additional water thereby preventing the water level within the evaporator 10 from reaching the chute 14 the present invention operates on a cyclic basis wherein first freezing of the crescent shaped ice pieces occurs followed by heating to break the bond between the crescent shaped ice pieces and the inner surface of the evaporator followed by harvesting by rotating the crescent shaped ice pieces upward until they are dispensed from the chute at the top of the evaporator as a first step in the cycle the control system opens the float valve 62 until the evaporator is filled with water after the evaporator is full the freezing cycle begins during which the temperature of the refrigerant within the helical tubing 20 is lowered below the freezing point of water and beginning the build up of a film of water ice on the inner surface of the evaporator air agitation throughout the evaporator 10.