Great Plains NP30A 30-foot Operator Manual - Manual (Page 108)

104 NP30A or NP40A Table of Contents Index Great Plains Manufacturing, Inc.
407-502M Table of Contents Index 2014-05-20
NH
3
Consumption
Too High (but no
alarms)
Incorrect console setup Re-check METER CAL and BOOM CAL.
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. 30in). Also check tracks for unintended
re-applications, particularly if relying on GPS mapping.
Tank or system Leak Suspend application. Carefully approach applicator and
nurse tank from up-wind. Check for leaks in
Flow meter malfunction Consult dealer.
Rows Not Fertilized Check for plugged row-unit
tube Stop application per page 76. Lift applicator and inspect
knives or tines. Clear any plugging per “Clearing Plugged
Knives or Tines” on page 112.
Failed or malfunctioning
aftermarket section control. Consult system supplier documentation.
No Fertilizer Flow Strainer plugged Close all valves. Inspect strainer (page 119). 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 75).
Close emergency shut-off valve.
Discharge line from emergency shut-off valve to knives or
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.
Metering System Troubleshooting
Problem Cause Solution