Great Plains ADC2250 Operator Manual - Manual (Page 24)

22
Section 3 Adjustments
Model 2250 Air Drill Cart 167-033M 7/28/10
Great Plains Mfg., Inc.
7. Weigh accurately and record the weight of an empty
container large enough to catch seed coming out of
the meter. Place this container under the rear door of
the meter.
8. Turn the calibration handle clockwise, refer to Figure
3-9, for one acre. This is 133 complete turns.
Meter Seal Flange
Figure 3-8
14480
Calibration Crank
Figure 3-9
14865
9. Wipe all material off the top of the meter seal flange
and capture in the container.
10. Weigh accurately the container with the seed. Sub-
tract the weight of the empty container to get an actual
seeding rate. Re-adjust to a new setting if this one is
not acceptable and repeat steps 1 through 10 listed
above.
11. When the seeding rate is acceptable close the meter
door being careful to make sure the seal area is clear
of all foreign material. Remove the calibration handle
and store it in the provided bracket when not perform-
ing rate setting.
NOTE: Turn the handle in a clockwise direction so
that the top of the shaft moves toward the rear of the
drill. Turning the handle counter-clockwise will also
meter seed, but at a rate far below what will be ap-
plied in the field with the meter running in the proper
direction.