General application troubleshooting – Great Plains NP3000A Operator Manual User Manual
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NP3000 and NP3000A
Great Plains Manufacturing, Inc.
407-613M
2014-04-22
General Application Troubleshooting
No Fertilizer Flow
Strainer plugged
Close all valves. Inspect strainer
(page 117). Clean screen and
magnets as needed.
Material run-out
Check tank level.
Temperature too low
Wait for warmer conditions.
On/Off solenoid valve failure or open circuit.
Suspend operation (page 63).
Close emergency shut-off valve.
Discharge line from emergency
shut-off valve to tines.
Wait for applicator to be safe to
approach.
Check harness connections and
fuses.
Use console SELF-TEST mode to
command Raven valves open. Check
valve ball indicators at valves.
Problem
Cause
Solution
Problem
Cause
Solution
Excess
Material
Remaining
Field size different.
After ruling out metering problems, re-check geography.
Excessive gaps between applicator
passes.
Gap between opposing pass end trenches should be one
row space (e.g. 30 inch)
Material
Consumption
Too High
Field size different.
After ruling out metering problems, re-check geography.
Excessive overlap
Gap between opposing pass end trenches should be one
row space (e.g. 30 inch). Also check tracks for unintended
re-applications, particularly if relying on GPS mapping.
Tank or system Leak
Suspend application. Check for leaks.
Rows Not
Fertilized
Check for plugged row-unit tube
Stop application. Lift applicator and inspect tines.
No Fertilizer
Flow
Strainer plugged
Close all valves. Inspect strainer (page 119). Clean screen
as needed.
Material run-out
Check tank level.
Tines
plugging
frequently
Tine tips too low for coulter depth
Raise tine weldment (page 79).
Coulter blades too worn
Replace coulter blades.
Field too wet
Wait for drier conditions.
Applicator not level from front to rear Check applicator front-to-back level (page 43).
Tractor rocking backward during
stops, or lift sequence pushing tines
backward
Refine stopping and/or lifting technique to avoid reverse
coulter motion in ground.