Y-tubes, Airbox operation, Y-tubes airbox operation – Great Plains YP3025A Operator Manual User Manual
Page 49
Great Plains Manufacturing, Inc.
Operating Instructions
45
02/16/2012
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
1