Great Plains ADC1150 Operator Manual - Manual (Page 50)

48
Section 4 Adjustments
Model 1150 1995 - 1997 167-058M 7/28/10
Great Plains Mfg., Inc.
5. Open the rear access door on the meter. Do not open
the front door!, refer to Figure 4-7. Turn the calibration
hand crank a few turns to be sure the meter stars are
full of material.
6. Wipe all material off the top of meter seal flange, refer
to Figure 4-8.
7. Weigh accurately and record 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
4-9, for one acre.
For speed change outer sprocket 25 teeth orientation;
this is 30 complete revolutions. For speed change out-
er sprocket 44 teeth orientation; this is 93 complete
revolutions, refer to Figure 4-10.
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 a safe place when not performing rate
setting.
NOTE: Make sure there is enough material in the bin
to fill meter and keep it full during the calibration.
Calibration Access Door
Figure 4-7
14476
Meter Seal Flange
Figure 4-8
14480
Calibration Crank
Figure 4-9
14477
Handle Revs/Acre
Figure 4-10
14488
NOTE: Turn the handle in a clockwise direction so
that the top of the shaft moves toward the front 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.