Slide chart - liquid fertilizer rate – Great Plains YP825AR Material Rate User Manual
Page 81
Great Plains Manufacturing, Inc.
Liquid Fertilizer Rate
77
2013-11-11
401-923B
Slide Chart - Liquid Fertilizer Rate
The CDS-John Blue LM-1255 pump includes a
112718-01 slide chart for calculating pump settings.
To make the scales on this chart easier to use
a
, this page
provides adjusted data values. These adjusted values
produce results within 0.1% of the actual sprocket
combinations and loaded radius values.
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 70).
2.
Use the chart on page 71 to determine whether you
need Low Range or High Range for this rate.
On the slide chart:
3.
Move the upper sliding scale to align the
STANDARD SPROCKET COMBINATIONS
“16 to 32” or “10 to 50” with the corresponding
LOADED RADIUS
“15” or “7”, respectively.
Ignore the “SPROCKET RATIO” scale
a
.
4.
At chart center, use the lower sliding scale to align
swath width of your planter under the arrow (
▼).
5.
At the bottom scale:
“GALLONS PER ACRE MODEL LM-1255 PUMP”
find your desired application rate.
Ignore the “L-4600” scale (which is for a different
pump model).
6.
At the “PUMP SETTING” scale, read the pump
setting at your rate.
Equipment Damage Risk:
In High Range, do not exceed a field speed of 9 miles per hour
(14.5 kph). The pump is at its maximum rate of 550 rpm at this
speed. In Low Range, all practical field speeds are below 550
rpm.
a. The actual LOADED RADIUS of the ground drive wheel is 11.5 inches in High Range, which is difficult to read on the chart.
The actual net SPROCKET RATIO for Low Range is 1.33, which is off-scale on the chart.
The actual net ratio for High Range is 4.18, which is difficult to match up with 11.5.
Figure 35
CDS-John Blue Slide Chart
29981
112781-01
Drive System Range
Slide Chart Data
Low
High
15T : 15T
47T : 15T
STANDARD SPROCKET
“16 to 32”
“18 to 50”
COMBINATIONS*
LOADED RADIUS*
15.0 in
7.0 in
SPROCKET RATIO
Ignore
Ignore
Planter Model
SWATH WIDTH
YP825AR-0822
176 in.
176 in.
22 in. Single
YP825AR-0830
240 in.
240 in.
30 in. Single
YP825AR-0870
220.5 in
220.5 in
70 cm Single
YP825AR-0875
236.2 in
236.2 in
75 cm Single
YP825AR-16TR30
240 in.
240 in.
30 in. Twin
YP825AR-16TR75
236.2 in
236.2 in
75 cm Twin
GALLONS PER ACRE
Ignore
Ignore
MODEL L-4600 PUMP
PUMP SETTING
Read
Read
Read above desired
GALLONS PER ACRE
Choose
Choose
MODEL LM-1255 PUMP
* Scaled values to make the slide chart easier to use.