Great Plains YP4425A Material Rate - Manual (Page 41)

Great Plains Manufacturing, Inc. Table of Contents Volumetric Seeding 37
2014-05-13 Table of Contents 401-627B
Check or Install Grain Shield
To order the grain shield use the following Great Plains
part number:
403-596A VOLUMETRIC METER GRAIN SHIELD
When planting with the volumetric disk, a very small
percentage of grain may be lost out the opening at the
back of the seed tube. If the amount of loss is more than
you desire the grain shield can be installed to stop this.
Note: It is highly recommended that the grain shield be
removed from the meter when going back to larger
singulated seed.
Refer to Figure 21
To install:
4. Remove the strip and block brush assembly. Save
the washer for reuse in step 6.
5. Remove the
5 ⁄
16
inch (8 mm) hex-headed bolt and
discard, it is replaced with the
5 ⁄
16
inch button head
cap screw.
6. Position the grain shield and reinstall with the
5 ⁄
16
inch button head cap screw and saved
washer.
7. Re-install the strip and block brush assembly.
Install Discs / Set Shutters
8. Install the 817-867C volumetric discs as you would
any other seed disc. See Operator manual for
details.
Refer to Figure 22
9.
Set the seed inlet shutter on each meter. See the
rate charts for your crop for suggested initial values.
See the planter Operator manual for instructions on
setting the inlet shutter.
Take Note of Meter Pressure
Due to delivery of multiple seeds per disc cell, a
volumetric crop requires a specific value of disc
pressurization.
10. Note the suggested initial meter pressure. Have this
value at hand in the tractor cab.
Figure 21
Grain Shield Installed
31552B
2
3
2
3
Figure 22
Grain Shield, Brushes, Installed
31555B
4
4
Initial Meter Pressurization: Wheat
2.0 inches of water Hard Red Winter (HRW)
2.5 inches of water Soft Red Winter (SRW)
Note: Do not operate below 2.0 inches of water
Initial Meter Pressurization: Rice
Low Rate: 1.0 inches of water
High Rate: 2.5 inches of water