Great Plains NP30A 30-foot Operator Manual - Manual (Page 63)

Great Plains Manufacturing, Inc. Table of Contents Index Applicator Operating Instructions 59
2014-05-20 Table of Contents Index 407-502M
Unfolding and Folding 3-Point
Unfolding 3-Point
The 3-Point applicator should only be unfolded in the
field, or fully supported by parking stands.
Unfolding 3-Point (At Field)
These instructions presume the applicator has just
completed transport, and is being unfolded for field use.
1. Line the applicator up into the wind.
2. Close the weight-transfer shut-off valve (page 48).
3. Raise the 3-Point hitch fully.
4. Unfold the wings. Slowly extend the fold cylinders.
After the wings pass vertical, lock channels swing
into contact with the cylinder rods.
Stop the unfold when the wings are approximately
level. Hold at level with circuit Neutral.
5. Lower the applicator to the ground with the 3-point
hitch.
6. Open the weight-transfer shut-off valve.
7. Set the hitch to Depth Control mode.
Set the fold circuit to Float.
Unfolding 3-Point (Service)
To unfold, off field, for servicing, unfold with the center
section fully raised. Unless the wing gauge wheels have
been previously extended to maximum height, or extra
stands or supports are used, the wing end knives or tines
will reach the ground first. Take precautions if parking
surface damage is a concern.
1. Fully raise the 3-Point hitch.
2. Close the weight-transfer shut-off valve (page 48).
3. Point the applicator into the wind.
4. Deploy parking stands. Set them to maximum height.
5. Extend fold cylinders.
6. As the wings near level, set circuit to Neutral.
7. Unless using blocks or stands, fully extend the
gauge wheels to maximum height.
8. Resume unfolding until gauge wheels are on ground.
Set fold circuit to Float.
9. Lower the 3-point hitch.
Folding 3-Point
These instructions presume that the applicator is
unfolded and lowered.
1. Stop NH
3
flow (page 76).
2. Close the weight-transfer shut-off valve (page 48).
3. Retract the fold cylinder circuit until the wing locks
stop motion, or the outside row knives or tines just
start to lift out of the ground. Set the fold circuit to
Neutral.
4. Raise the 3-point hitch.
5. Wait for the delivery lines to discharge.
6. Deploy parking stands if the applicator is to be
parked at the folding spot.
Refer to Figure 43
(depicting an NP40L, which has similar wing locks)
7.
Swing the wing locks up and out of their engaged
positions, and into their reset
positions.
8. Retract the fold cylinders until the wings contact the
transport rest. Set circuit to Float if unhitching, or
Neutral for transport.
For parking/storage/service, lower the applicator onto
parking stands.
Figure 43: 3P:
Resetting Wing Locks
31620
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Ammonia Exposure Hazard:
Face applicator up-wind or clear the delivery lines (page 111)
before unfolding. Fluid in delivery line loops, whether pure
NH
3
or concentrated NH
4
OH, is likely to move from the loops
and drip out at the knives or tines.
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