NP30A or NP40A
Troubleshooting
109
2019-03-11
407-502M
Rows Not Fertilized
Check for plugged row-unit tube
Stop application per page 77. Lift applicator and inspect knives or
tines. Clear any plugging per “
Clearing Plugged Knives or Tines
Failed or malfunctioning
aftermarket section control.
Consult system supplier documentation.
No Fertilizer Flow
Strainer plugged
Close all valves. Inspect strainer (page 124). 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 76).
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