Great Plains NP30A 30-foot Operator Manual - Manual (Page 110)

106 NP30A or NP40A Table of Contents Index Great Plains Manufacturing, Inc.
407-502M Table of Contents Index 2014-05-20
NH
3
loss to
atmosphere
(one row)
Plugged tine See “Clearing Plugged Knives or Tines” on page 112.
If tines are plugging frequently, check: coulter setup,
application depth, tine wear. Field conditions and weather
may also be unsuitable at the moment.
Disconnected delivery or vapor line Treat this as tine plugging (page 112) until the cause is
determined. If the cause is tall tough field trash, consider
re-working the field if disconnects are frequent.
Sealer mis-adjusted or failed (such
as a broken spring) Check sealer. Adjust (page 99) or repair.
Rows in tractor tracks too shallow Reset tractor wheel spacing to avoid rows.
Tines
plugging
frequently Tines worn Replace worn tines.
Field too wet Wait for drier conditions.
Tractor rocking backward during
stops, or lift sequence pushing tines
backward Refine stopping and/or lifting technique to avoid reverse
tine motion.
Sealers
plugging Conditions too wet. Wait for drier conditions.
Too much pressure on row-units. Reduce spring pressure.
Sealers running at an angle Adjust sealers to run straight.
Coulters set too deep, bring up
excess dirt and moisture. Check coulter adjustment.
Fertilizer Applicator not level from
front to rear Check applicator front-to-back level (page 37).
Failed bearings Replace bearings.
General Application Troubleshooting
Problem Cause Solution