Adjustments, Pump setting determination – Great Plains PFC2000 Operator Manual User Manual
Page 39
Adjustments 37
03/28/2007
407-158M
Adjustments
The PFC1600/2000 Cart itself has two adjustments:
1.
The setting on the pump (
setting controls the stroke length of the piston, and
the flow rate through the valve.
2.
Strainer mesh screen sizes.
There are several adjustments on the planter that
affect fertilizer application:
• orifice selection
• ground drive pump sprockets
• relief valve setting
The planter adjustments are described in the planter’s
Seed Rate charts and Operator’s Manual.
Pump Setting Determination
1.
Using the application recommendations for the fer-
tilizer, and knowledge of local conditions, choose
the desired material application rate in gallons per
acre.
2.
On the pump slide chart
scale to the Loaded Radius and Sprocket Ratio
values shown in the table at right.
3.
Note the Maximum Ground Speed.
4.
On the bottom scale, set the Swath Width at the
line through diamond indicator below Ground
Speed.
5.
On the lower NGP-7055 scale, find the desired
gallons per acre.
6.
Above the gallons per acre rate, read the Pump
Setting.
The pump setting dial scale is in arbitrary units. The
setting controls volume per pump revolution. The slide
chart is required because the relationship is not linear.
The slide chart is not specific to the PFC1600/2000
Cart. The information at right is needed to use the
chart.
Note: The pump slide chart does not anticipate the ac-
tual 172/18 ratio and 33.6in loaded radius of the
PFC1600/2000 Cart. The sprocket pairing and
loaded radius values shown at right have been
mutually adjusted to within scale range so that
the chart calculates correct results.
Figure 18
Cart Ground Drive Pump
26155
1
1
Figure 19
Cart Pump Slide Chart
26156
1
2
3
4
5
6
For Slide Chart Scale
Use Value
SPROCKET RATIO
5/1
LOADED RADIUS
14
SWATH WIDTH
YP2425-2430 (24 row 30in)
720in
YP2425-3620 (36 row 20in)
720in
YP2425-4715 (47 row 15in)
705in
YP2425-48TR (48 row 30in)
720in