Hexagon Liquid Fertilizer Control System Guide 1. Flush the system lines. 2. Prime the system 3. Set the bypass pressure. 4. Open wilger tubes and check flow. 5. Calibration Part 1. 6. Calibration Part 2. 7. System check part 1. 8. System check part 2. 9. Operation switch check. 10. Display control & manual operation. 11. Area covered & clear coverage map. 12. New orifice & display nozzle set up. 13. Customer explanation rate up & simulator mode. 14. Wilger tubes set up adjust orifice replacement. 15. Filter circuit explanation. 16. Baseline calibration values.