Carrot Topper. The 3 lane automatic carrot topper WOA-3 consists of an infeed hopper with singulation system, a special conveyor, aligning belts and a knife platform. The conveyor is made of aluminum trays, which are mounted on heavy duty drive belts on both sides of the machine. Mounted above the hopper is a unique driven leveling unit to ensure a single depth of carrots are delivered onto the stepped singulation elevator. The singulation system positions the carrots in the trays. These trays t ...