The rotation direction of a Barmac VSI (Vertical Shaft Impactor), which is a type of crusher used in the aggregates industry for producing high-quality sand and aggregate material, can typically be either clockwise or counterclockwise. The specific direction for a particular machine would depend on the model and the manufacturer's specifications.
For precise information, it is best to refer to the operating manual provided by the manufacturer or consult with the supplier or technical support from the company that produced the equipment.