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Y-tubes, Airbox operation, Y-tubes airbox operation – Great Plains YP3025A Operator Manual User Manual

Page 49

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Great Plains Manufacturing, Inc.

Table of Contents

Index

Operating Instructions

45

02/16/2012

Table of Contents

Index

401-705M

Steps for setting and adjusting the air system are found
at “Fan and Adjustment” on page 61.

Y-Tubes

Refer to Figure 46
Y-tube gates can be shut off to feed only one row for sin-
gle-row planting on a twin-row machine. In the photo-
graph, the left meter tube is open and the right closed.

You can also shut off the Y-tube gates to clean out the air
system and meters. See “Row Unit Shut-Off” on
page 78.

Airbox Operation

Refer to Figure 47
The function of the airbox

is to mix seed with turbulent

air from the hydraulic fan, which then exits through a
manifold (not shown) to the seed tubes which serve the
row unit meters.

Note: Before the first planting each season, or when us-

ing new meters or meter wheels for the first time, or
at the start of each season, before filling with seed,
add

1

3

cup (80 ml) graphite to bottom of airbox.

When starting empty you must blow seed out to the
meters for two to four minutes to fill meters.

The monitor has a level sensor below the hopper or seed
box to warn when seed box is empty. There are three to
four acres of seed in the system when the sensor first
indicates box empty, depending on seeding rate.

Null4:

Figure 46

Seed Y-Tube

29758

Null4:

Figure 47

Air Box

29309

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1