Great Plains YP40F Operator Manual - Manual (Page 36)

32 YP2425F/YP4025F Table of Contents Index Great Plains Manufacturing, Inc.
403-362M Table of Contents Index 2013-03-25
No Fertilizer Flow
(single row) Bridging at inlet of applicator tube Remove hose. Clear bridge. Check material for
oversize content. Also check meter flutes for
damage. Generally, anything that passes an
undamaged flute will also pass all
down-stream constrictions.
Bridging at or near tip of applicator
tube Clean out tube. Inspect fertilizer for clumping,
oversize particles and foreign matter.
Application Rate Low
(all rows) Final drive gears are in Low range
when High is required Exchange gears (page 23).
Incorrect meter setting Check basic setting against chart (page 63).
Review calibration steps (page 25).
Excessive field speed Chart was developed at 9.7 kph. Fan and
meter performance may not scale to higher
speeds.
Density adjustment and/or calibration
not performed Adjust density (page 66) before selecting initial
rate settings. Calibrate (page 25).
Excessive gaps between passes.
Area actually covered is less than
intended. Check that pass gap is one row space.
Adjust marker extension if necessary.
Ground drive arm spring has failed or
gotten out of adjustment. Check spring. Reset
Application Rate Low
(some rows) Hose connection incorrect at
manifold outlets. Outside two outlets
serve only wing end towers and not
inner towers Reconnect inside towers to inside manifold
ports (page 17).
Meter flutes worn or broken Inspect and replace flutes (page 36).
Foreign matter blocking flow at flute
compartment Clean-out hopper (page 35).
Inspect and clean above flutes.
Application Rate Low
(single row) Airbox outlet plugged. Clean-out hopper (page 35).
Inspect manifold outlet area.
Application Rate High
(all rows) Final drive gears are in High range
when Low is required Exchange gears (page 23).
Density adjustment and/or calibration
not performed Adjust density (page 66) before selecting initial
rate settings. Calibrate (page 25).
Overlap between passes. Area
actually covered is greater than
intended. Check that pass gap is one row space.
Adjust marker extension if necessary.
Application Rate High
(some rows) Hose connection incorrect at
manifold outlets. Center four outlets
serve only inside towers and not wing
end towers Reconnect wing end towers to outside manifold
ports (page 17).
Meter flutes worn or broken Inspect and replace flutes (page 36).
Dry Fertilizer Troubleshooting
Problem Cause Solution