Great Plains NTA2007 Material Rate - Manual (Page 38)

36 Great Plains Manufacturing, Inc. Contents Appendix VRG Air Drills
167-085B Contents Appendix 2012-01-03
Slide Chart Fertilizer Rate
The CDS-John Blue NGP-6055K pump includes a
115797-01 (115698-91) slide chart for calculating pump
settings.
To make the scales on this chart easier to use, the
following tables provide adjusted data values. These
adjusted values produce results within 0.1% of the actual
sprocket combinations and loaded radius values.
This data is valid for both drill-mounted pumps, and
pumps on PFC1600 or PFC2000 carts. Both Great
Plains systems use the same NGP-6055K pump.
1. Determine your desired application rate in gallons
per acre. If you need to set metric rates, use the
CDS-John Blue web calculator (see page 34).
On the slide chart:
2. Align the “LOADED RADIUS” on the upper sliding
scale with the “SPROCKET RATIO” on the lower
edge of the upper scale.
3. At chart centre, note the MAXIMUM GROUND
SPEED above the diamond (
◆) indicator. Any speed
below this is within the pump limit of 550 rpm.
4. Use the lower sliding scale to align swath width of
your drill under the diamond (
◆).
5. At the bottom scale, on:
“GALLONS PER ACRE MODEL NGP-6055 PUMP”
find your desired application rate.
Ignore the upper “NGP-8055”, and lower “NGP-
7055”, “NGP-9055” scales (for different pumps).
6. At the “PUMP SETTING” scale, read the pump
setting at your rate.
Slide Chart Data
Note: These table values are not the actual radius and
ratio. They are used both to make visual alignment
easier, and because the actual radius is off scale
for NTA607/HD and NTA2007/HD.
Equipment Damage Risk:
Do not exceed a pump rpm of 550. If your proposed field speed
is over 9 miles per hour (14.4 kph), use the CDS-John Blue
web calculator to determine the pump rpm. Some high rates in
High Range, at high speeds, can exceed 550 rpm.
.eps
25.0%
Figure 18
CDS-John Blue Slide Chart
31319
Low Range Drill Model
NTA2007, NTA2007HD
115797-01 Slide Chart Data -3275 -3275 -4006 -4006
Std.Flex Ltd.Flex Std.Flex Ltd.Flex
None (Use Sprocket Ratio scale. See narrative.)
25.0 in 25.0 in 25.0 in 25.0 in
2.4 2.4 2.4 2.4
SWATH WIDTH 242 in. 240 in. 245 in. 240 in.
GALLONS PER ACRE SCALE (Use NGP-6055 scale.)
PUMP SETTING (Read below rate on gallons per acre scale.)
¹ Adjusted: not the actual loaded radius (see narrative).
² Adjusted: not the actual sprocket ratio (see narrative).
STANDARD SPROCKET
COMBINATIONS
LOADED RADIUS¹
SPROCKET RATIO²