Great Plains NTA2000D Operator Manual - Manual (Page 20)

18 NTA 2000D 148-632M 9/13/2006
Great Plains Mfg., Inc.
Figure 4
Turn Selector Valve
Fan Speed Chart
Seeds Fan RMP
Sunflowers 2250-3000
Wheat 2800-3200
Soybeans 2750-3500
Milo 2250-3000
Barley 2800-3500
Peas 3200-3500
Canola 2000-2200
Grass 2000-2200
Fan
Opener Operation
Never back up with openers in ground. If you do, check all
openers to be sure none are clogged or damaged.
For information on seeding depth and opener adjust-
ments, refer to Seeding Depth, “Adjustments,” page 26.
For more information on troubleshooting opener prob-
lems, see “Troubleshooting,” page 39.
Fan Operation
Refer to Figure 4
The selector valve diverts the folding circuit to the fan
circuit.
The fan must be operated with the return oil line con-
nected to a low back pressure sump return on the tractor.
Check with tractor manufacturer for proper connection of
oil sump return line. A low back pressure quick disconnect
is supplied with the drill for ease of connection to the trac-
tor sump return line.
Use tractor remote hydraulic valve flow control to set fan
speed.
Run fan for at least 15 minutes before seeding. Hydraulic
fluid must be warm before fan will operate properly.
Watch monitor and adjust fan speed by increasing or
decreasing hydraulic flow from tractor.
Use the fan speed chart as a guide. Actual fan speeds will
vary with seeding rates, seed weights and seed size.
Increase fan speed for heavier seeding rate or seed.
Reduce fan speed for lighter seeding rates and seed more
prone to cracking.
Set the fan speed for the type of seed and seed rate being
planted. Refer to “Seed Rate Charts,” page 48. Operating
the fan at higher than recommended speeds can cause
seeds to be blown out of the opener seed trench.
Note: Do not operate fan above 4500 RPM.
Follow the chart at the right as a guide. Actual fan speeds
will vary with seeding rates, seed weights and seed size.
Increase fan speed for heavier seeding rates or seed.
Reduce fan speed for lighter seeding rates and seed more
prone to cracking.
Marker Operation
Optional markers are on their own hydraulic circuit. They
operate through a sequence valve which alternates lower
and lift cycles between the right hand and left hand
marker.
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