The direction of rotation may be inverted only in three-phase pumps (therefore pumps powered at 400 volts). In single-phase pumps (230 volts) the motor always rotates in the correct direction. We recommend you read the instruction manual of the Diver HF (also available in our DNA software) for useful information for use, maintenance, and installation, including the procedure for checking the direction of rotation. It should be  counterclockwise for DIVER HF. You must look for the arrow on the data plate.