I didn't think Repeatier supported bed leveling / calibration for delta printers, though it has been a while since I have used it. I also didn't think cartisian bed leveling worked for delta printers.
Delta leveling / calibration is more involved then calibrating cartisian printers. I would start by reading up on how to manually dial in your printer with something like
minow.blogspot.com. Escher3D then has a manual version of his RepRapFirmware calibration tool for probing points on your printer.