GREAT PLAINS Yield-Pro Air-Pro YP2425A, Operator'S Manual

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YP2425A Table of Contents Index Operating Instructions
Great Plains | 401-626M | 2019-06-11 Table of Contents Index 47
Weight Transfer Operation (Option)
This option provides a control valve , plumbed into the
hydraulic drive circuit, and a cylinder for each wing.
Up to 1000 pounds (450 kg) of mainframe weight may be
transferred to each wing when oil is being supplied to the
hydraulic drive circuit.
Once set, the circuit usually requires little adjustment in
normal field operations. To set the circuit:
1. Unfold and lower the planter in field conditions.
2. Supply oil to the hydraulic drive circuit (or operate
the PTO at field rpm if using a PTO pump that
supplies the hydraulic drive). The hydraulic drive
motor itself does not need to be operated.
3. Loosen the lock disc at the valve block. Adjust the
knob until the gauge reads approximately
1000 psi. Tighten the lock disc.
4. Lower the planter. Engage the hydraulic drive (with
seeding disabled) Pull forward at normal field speed
for a short distance. Stop.
5. Check that the wings are level.
See page 16 and page 156 for important information
about movements without a suitable tractor. See
page 126 for ordering information.
Monitor Operation
Monitor operation is described in a separate manual
supplied with your YP2425A 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
•
If the wings ends are lower than the center,
decrease the pressure at the valve .
•
If the wing ends are higher than the center,
increase the pressure.
 A relief valve in the valve block prevents any
damage from over-pressure.
Figure 52
Weight Transfer Valve and Cylinder
36421
2
1
4
3
5
1
2
3
4 5
5
Figure 53
Seed Monitor Console
29754