I'm not particularly familiar with that model, but your machine should have a z-stop which regulates the lowest position of the nozzle assembly. If yours is adjusted too low, the results will be as you have presented. Locate your z-stop and determine if it can be raised to provide you with the necessary adjustment of the bed leveling. In another model printer, I had to add a small spacer to trigger the z-stop, as the installation did not have any adjustment.