Great Plains NP3000A Operator Manual - Manual (Page 53)

Great Plains Manufacturing, Inc. Table of Contents Index Operating Instructions 49
2014-04-22 Table of Contents Index 407-613M
Lowering (Field, Unfolded)
1.
If lock channels are engaged on the rear lift-assist
cylinders, raise the implement, disengage the
channels (page 50), and insert the desired number
of spacers (page 43).
2. Open the lift-assist shut-off valve (page 48).
3. To lower the implement, lower the tractor hitch and
retract the lift-assist cylinders (normally with a
Retract operation of the tractor remote).
4. The front of the implement lowers until the hitch
movement is stopped by your control, or by any
depth stop set on that control.
5. The rear of the implement lowers until the cylinders
are stopped by the installed spacers, or until fully
retracted if there are no spacers. If the coulters are
not in the ground, the lift-assist wheels come off the
ground until you pull forward into the field.
6. The wings (if unfolded) lower to the height set by the
wing gauge wheels (page 84) or onto the coulters.
7. Set the lift/fold circuit to Float.
Lower (Service/Parking, Folded)
This topic presumes that the intention is to lower a folded
implement without unfolding. If the intention is to both
lower and unfold, see “Unfolding” on page 51.
1. Open the lift-assist shut-off valve (page 48).
2. Raise the implement. Set circuits to Neutral.
3. Remove spacers and install lift-assist lock channels.
Deploy parking stands (page 42) as desired.
4. Lower front of implement with 3-point.
5. Slowly lower rear of implement with lift/fold circuit.
Stop as soon as rear cylinders are fully retracted or
on spacers/locks.
6. If the wings began to unfold, reverse the circuit just
long enough to put the wings back on the transport
rest.
7. Set circuits to Float.
First Pass Lowering:
• If lock channels are engaged on the rear lift-assist
cylinders, raise the implement, disengage the
channels (page 50), and insert the desired number of
spacers (page 43).
• If the wings are drooped, retract the fold circuit
(page 52) to bring the wings into contact with the
wing locks, or to wings level. Set fold circuit to Neutral
until lowered to ground.
Overhead Sharp Crushing Object Risk:
Clear the area near the implement. Lower with caution when
folded. Once the lift-assist cylinders retract against locks or
spacers, oil flows to the fold cylinder bases, and the wings
begin to unfold. Anyone under the wings may not be expecting
an unfold, and could be struck, injured or killed.
Equipment Damage Risk:
Fully fold before lowering onto parking stands. Parking stands
support only the center section. If unfolded, wings will droop,
and coulters will strike the ground.