Raven Hawkeye - Avoiding Application Skips; Recommendations for Optimal Operation

APPENDIX
A
P/N 016-0171-584 Rev. D 71
APPE NDIX A AVOIDING SKIPS WITH
HAWKEYE NOZZLE CONTROL
SYSTEM
OVERVIEW
The Hawkeye nozzle control system is designed to pulse each spray tip using an alternating pattern across the
implement width. This alternating nozzle spray pattern relies upon an overlapping spray tip pattern and droplet
dispersion to achieve complete and even coverage during field applications.
RECOMMENDATIONS FOR HAWKEYE NOZZLE CONTROL OPERATION
Maintain the following application system conditions will help to ensure consistent, even coverage during field
applications using the Hawkeye nozzle control system:
1. Use the appropriate tip size for the desired application speeds, target rates, and system pressures. Refer to the
tables in the Tip Selection and Application Speed Guide section on page 75.
2. Use wide-angle spray tips and appropriate spray tip height to achieve approximately 150% pattern overlap.
a. When using 80° spray tips, maintain a tip height of 36 inches [91.4 cm] or higher.
b. When using 110° spray tips, maintain a tip height of 21 inches [53.3 cm] or higher.
3. Maintain a system pressure sufficient to fully develop the intended tip spray pattern.
4. Avoid nozzle control valve duty cycles below 25%.
a. Avoid application speeds in the bottom 1/3 of the recommended speed range.
b. Avoid target flow rates in the bottom 1/3 of the recommended application rate range for each spray tip.