Airbox operation, Monitor operation – Great Plains YP4425A Operator Manual User Manual
Page 47
Great Plains Manufacturing, Inc.
Operating Instructions
43
2012-02-23
401-805M
Airbox Operation
Refer to Figure 45
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
using 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.
Monitor Operation
Monitor operation is described in a separate manual
supplied with your YP4425A Planter.
Operations covered in that manual (and therefore not in
this manual) include:
• hydraulic drive control
• seed rate calibration
• planting rate
• fertilizer rate
• setting rate limits and detecting out-of-limits
• GPS integration
• fan rpm
Figure 45
Air Box
29309
1
Figure 46
Seed Monitor Console
29801