Great Plains NP4000B Operator Manual - Manual (Page 106)

102 2013+ NP4000/A/B Table of Contents Index Great Plains Manufacturing, Inc.
417-199M Table of Contents Index 2014-05-14
Row Shutoff
Refer to Figure 70
Unused drop lines may be shut off by replacing the
nozzle
with a Great Plains 832-051C cap .
Nutri-Pro
®
boom systems typically have more nozzles
than coulters, and include caps for unused rows.
When installing a cap:
• It is not necessary to remove the gasketed orifice plate
from inside the clamp. The cap includes its own gasket
that seals at the end of the clamp port.
• Use a tie wrap or other line to secure the loose nozzle
and drop line tubing to the boom.
• Adjust pump and/or orifice plates for new rate and row
spacing.
Mis-Application or Material Loss Risk:
Do not apply materials after row shut-off or row turn-on
without first reviewing setup. Merely changing the number of
active rows does not change the application rate. If pump
and/or orifice size changes are not also made, pressures could
be too low or too high.
Strainer Adjustment
Refer to Figure 72
A Banjo brand strainer
is supplied with the ground
drive fertilizer pump. It is plumbed before the
CDS-John Blue pump. The standard 80 mesh screen
should be suitable for most applications. A 50 mesh
screen is available from Great Plains. Other screen sizes
are available from Banjo Corporation.
If changing screen sizes, keep in mind the following.
• A smaller mesh (100) keeps very small manifold
orifice plates from plugging so often. However, the
screen requires cleaning more often.
• If using variable rate nozzles, Spray Target
recommends use of a 50 mesh screen with the
VeriFlow nozzles available from Great Plains (part
number LST-1550).
• A larger mesh (50) or (30) passes more material but
should only be considered when using large manifold
orifice plates.
• Mesh sizes below 30 are not recommended for use
with CDS-John Blue pumps.
• A plugged or partially plugged screen starves the
pump resulting in a reduced application rate.
• Mesh sizes: (Smallest) 100, 80, 50, 30 (Largest)
L36
L39
Figure 71
Fertilizer Orifice Plate
29984
L39 L36
L18
Figure 72
Strainer
18418
1
L18
1