Great Plains YP1625 Operator Manual - Manual (Page 27)

Great Plains Manufacturing, Inc. Operating Instructions 23
03/12/2012 401-226M-A
Lowering Planter
If lock channels are installed, the planter may be lowered
at any time. if lock channels are not installed, lower only
when unfolded, such as for field turns.
Install lock channels (page 21) as appropriate for next
activity.
1. Set the CFM “Lift/Hitch” switch to Lift to enable the
lift cylinder circuit.
2. Move the Lift/Hitch circuit lever to retract the lift cylin-
ders until settled on lock channels or fully lowered to
ground.
3. Set the lift circuit to Neutral for field operation. The
switch
may be left in the “Lift” position.
Crushing and Sharp Object Hazards:
Keep all persons away from frame sections during lift and
lower. Area under row units is particularly dangerous. Sharp
coulter and opener blades descend with hundreds of pounds of
down-force.
Note: Unless lock channels are installed, lower the plant-
er only when fully unfolded. Lowering when folded
is prevented by the transport locks.
Re-phasing Lift System
Over a period of normal use the cylinders may get out of
phase. This will cause some planter sections to run
higher than others. If this is the case, it will be necessary
to re-phase lift cylinders.
Note: Lift cylinders can only be re-phased when planter is
unfolded.
To re-phase cylinders:
1. Raise the implement completely and hold the
hydraulic remote lever on for several seconds until all
cylinders are fully extended. Do this every 8 to 10
times you raise planter out of ground.
2. When all cylinders are fully extended, momentarily
reverse hydraulic remote lever to retract system
1 ⁄
2
in
to maintain levelness.
End of Raising/Lowering Planter.
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