Great Plains 1007NT Material Rate - Manual (Page 37)

07/08/2009 150-290B
Great Plains Mfg., Inc.
35
16. Divide the desired original field rate by the measured
rate to calculate a scale adjustment factor. Multiply
that by the previous scale setting to obtain a new
scale setting.
17. Reset the fertilizer rate adjuster based on the set-
tings at the new chart rate.
Note: You may want to repeat calibration procedure at
the new setting if your results varied greatly from
the desired field rate.
18. With calibration complete, store the calibration crank
handle, re-install any seed chain removed and
reconnect fertilizer hoses.
19. Check that your ground drive tires are 5.70-8 8-Ply
and properly inflated. See “Tire Inflation Chart” in
Operator Manual.
20. When drilling, check application rate by noting acres
drilled, amount of fertilizer added to drill and fertilizer
level in drill box. If you are applying more or less than
desired, adjust rate slightly to compensate for field
conditions.
For example: the target rate was 109 lbs/ac and the
measured rate was 95, using a scale setting of 60.
NewScale is:
69 = 60 x 109
÷ 95
NewScale PreviousScale
TargetRate
MeasuredRate
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