Great Plains 3N-3020 Operator Manual - Manual (Page 49)

3/29/2012 196-366M
47 Troubleshooting
Troubleshooting
Problem Cause Solution
Planting too much Incorrect seed rate or drive type. Check seed rate information on
page 64 or in the Veris section
beginning on page 63.
Seed size and weight may vary. Adjust seed rate handle.
Actual field size is different. Verify field size.
Excessive overlap.
Irregular shaped field. Adjust marker, page 42.
Incorrect tire size or air pressure. Correct tire size and air pressure,
page 72.
Seed cup door open too much. Refer to page 39.
Planting too little Incorrect seed rate or drive type. Check seed rate information begin-
ning on page 64.
Excessive field speed. Reduce field speed.
Seed size and weight may vary. Adjust seed rate handle.
Incorrect tire size or air pressure. Correct tire size and air pressure,
page 72.
Check seed level in seed box. Fill seed box.
Actual field size is different. Verify field size.
Excessive gaps between drill
passes. Adjust marker, page 42.
Build up of seed treatment in seed
cups. Clean out seed cups.
Plugged opener seed tube. Lift drill, expose bottom of seed tube
and clean out.
Obstruction in seed cup from foreign
matter or unclean seed. Clean seed cup.
Thrown or worn drive chains Check drive chains.
Worn sprockets and/or chain idlers. Replace sprockets and/or chain
idlers.
Uneven seed spacing. Excessive field speed. Reduce field speed.
Unclean seed. Use clean seed.
Build up of seed treatment in seed
cup. Clean out seed cup.
Seed-Lok plugging. Lock up Seed-Lok, page 43.