Great Plains YP1630F-1670 Material Rate - Manual (Page 22)

20 Great Plains Manufacturing, Inc. Contents Appendix YP1630F
401-832B Contents Appendix 2012-12-04
Calibration Steps
Possible Agricultural Chemical Hazards:
Obey manufacturer or grower recommendations for safety
equipment and protective gear when working with and around
fertilizer.
1. Load enough fertilizer for at least
1 ⁄
10
hectare (or
1 ⁄
10
acre) plus an extra 35 to 45 Kg (75 to 100 pounds).
Note: Do NOT run the fan during calibration.
2. Determine the initial Range and Gearbox settings
from charts, with any density adjustment.
3. Set the Range gears (page 18).
4. Set the Gearbox arm (page 18).
Refer to Figure 11 on page 19
5.
Un-pin the calibration crank at its storage
location . Re-pin it on the calibration crank
shaft .
6. Empty the calibration bag (part number 816-585C).
Check that the digital scale (part number 891-209C)
is operating correctly.
Refer to Figure 12
7.
At the base of the meter, open the calibration
door @. Attach the bag.
8. Operate the calibration crank for a few turns, until
fertilizer fills the meter flutes and is smoothly flowing
into the bag. Stop. Remove the bag.
Note: A clicking sound from the ratchet sprocket in the
ground drive is normal. The ground drive wheel
should not turn.
9. Empty the bag into the hopper. Weigh the empty
bag.
10. Re-attach the bag to the meter.
11. Operate the crank, at one to two revolutions per
second, for the number of revolutions shown in the
table at right.
Machine Damage and Rate Risks:
Rotate calibration crank only in the COUNTERCLOCKWISE
direction. Operating in reverse can cause gearbox damage.
Note: A longer calibration is always more accurate,
especially for low rates and small seeds.
1 ⁄
10
hectare or acre is easy to calculate and is a
minimum calibration run.
Loss of Material Risk:
Do not open the door under the DRIVING gear. This is the
clean-out door. Opening this door drains the hopper. Once the
clean-out door is open it is difficult to stop material flow until
the hopper is empty, and impossible to close it with a seal tight
enough for application.
Figure 12
Calibration Door Open
34568
1
2
3
BagWeight : The 816-585C bag, when clean and empty,
weighs: 1.52 Kg (3.36 lbs)
Crank Revolutions for
1 ⁄
10
hectare
1 ⁄
10
acre
YP1630F-1670 99.3 40.2
YP1630F-1630 91.2 36.9