Ation (step 35). v – Great Plains YP4425A Material Rate User Manual
Page 48
44
YP3025A, YP4025A and YP4425A
Great Plains Manufacturing, Inc.
401-627B
2014-05-13
28. Set the seed inlet shutters to 2 (see planter Operator
manual for details).
29. Select the section and rows to be sampled.
30. Use the clutches
h
to disconnect the other sections of
the planter.
31. Raise the planter, and install the lift cylinder
transport locks. Leave tractor hydraulic system
active.
32. Bring the hydraulic fan up to planting speed (see
planter Operator manual for details).
33. Press the Fill Disk
softkey and then the
Row Fill
softkey. This diverts all split air to seed
delivery. Remain in this mode until no more seed is
flowing to meters. Press the Work Screen
softkey to return to the main Work menu.
34. Press the Control Setup
softkey and then the
Channel Setup
softkey.
35. Press the Spreader Calibration
softkey.
36. Engage the hydraulic drive circuit.
37. Press the Fill Disk
softkey. This turns the
meters one revolution to fill the disc cells.
38. Determine the meter revolutions needed. The
following equation gives the number of meter
revolutions needed to meter 10 pounds. The tables
on page 46 provides approximate pounds (and kg)
per revolution of each wheel and seed.
39. Configure the seed monitor for the planter and crop
(material). If the seed density is not known,
use 1 lb/cu-ft or 1 lb/bu.
40. Consult the rate chart for the crop (page 46). Note
the allowed Meter RPM range for the intended seed
wheel and planting speed.
41. Place a collection bucket under each test meter’s
seed tube.
42. In the Spreader Constant Calibration screen, enter
the “# Meter Revs” and press the Start
softkey.
h. If the planter is equipped with Swath Command™, disable all but the tested rows.
Moving Chain Hazard:
Shafts turn and chains move as soon as the [Start] softkey is
pressed on the seed monitor. Set up collection containers so
that they may be unattended. Keep all persons clear of the
planter while calibrating.
For example:
planter: model with 15 inch rows
crop: Hard Red Winter wheat
PoundsPerRev:
0.04
RowsSampled
:
4
10
ч (4 Ч 0.04) = 62.5
Enter 63 for “# Meter Revs” at step 42.
#MeterRevs
10
RowsSampled
PoundsPerRev
×
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=
For example:
target population: 110 lbs/ac
desired speed: 5 mph
METER RPM
12 rpm minimum, 45 rpm maximum