Great Plains 3N-4020 Operator Manual - Manual (Page 45)

Great Plains Manufacturing, Inc. Table of Contents Index Hydraulic Drive Operation 41
2013-10-29 Table of Contents Index 196-359M
Refer to Figure 39
4. Set the Point Row switch box for Calibration mode:
• LEFT section switch on.
• CENTER and RIGHT section switches off.
• Master switch
to “CAL”
Confirm CAL lamp illuminated.
5. Take steps to capture and measure seed from the
three outside rows of the left wing.
If seed a loaded at more rows, take steps to recover
seed from non-sampled rows on the left section.
6. Set the seed rate handles all sections to the chart
value (page 40). See page 29 for handle operation.
7. Set the feeder cup doors, drill wide, per page 29.
Refer to Figure 40
8. Turn on Controller Console by pressing ON/VR but-
ton. Green light above ON/VR button illuminates.
9. Use ⇑ / ⇓ arrow buttons to set desired planting rate,
the example, 50.0 pounds/acre
a
.
Note: Set the desired rate before performing a calibra-
tion, as this value is used by the controller to calcu-
late sample run time. If the rate is not set, the
sample run time will be incorrect, or you may get
“TIME TOO LOW/HIGH” errors that cannot be
cleared by adjusting the expected sample size.
Refer to Figure 41
10. Press FUNCTION button until CALIBRATION NUM-
BER window appears.
11. Select drive calibration number based on row spac-
ing and seed, from “Hydraulic Drive Calibration”
on page 40. You may also use an initial value devel-
oped from a previous calibration of similar seed.
12. Use ⇑ / ⇓ arrow keys to set Calibration number.
If no sample-based calibration is desired, press
FUNCTION to cycle to initial screen.
Figure 39
Point Row in Calibration
28329
M
CAL
m
M
CAL
a. The controller ignores units of measure at step 9. If you change units at step 15, the numeric value entered at step 9 is unchanged.
Figure 40
Controller Button Functions
28249
Figure 41
Calibration Number
28250