Great Plains NP30A 30-foot Operator Manual - Manual (Page 55)

Great Plains Manufacturing, Inc. Table of Contents Index Applicator Operating Instructions 51
2014-05-20 Table of Contents Index 407-502M
Raise/Lower: 3-Point
The height/depth of the center section of a 3-point
fertilizer applicator is controlled entirely by the tractor
hitch.
The height of the wings is controlled by manually-set
wing gauge wheels. Operator action during lift and lower
is needed to control wing droop.
Raising 3-Point (Field Lift, Unfolded)
These instructions presume that the intention is to lift
without folding, that the applicator is unfolded, and that
the wing fold locks auto-engaged at the last unfold, and
have not been reset. If the intention is to lift and fold, see
“Folding 3-Point” on page 59.
Anhydrous Ammonia Exposure Hazard:
When raising in field, be facing into the wind or be turning
up-wind. Even if NH
3
flow was stopped some distance before
the lift point, the knives or tines will still be emitting NH
3
vapor when out of the ground.
1. Fold the wings up. The wing locks arrest the fold just
above wings-level. Set circuit to Neutral.
2. Lift the center section with the 3-point.
Raising 3-Point (Transport/Service Lift, Folded)
If the wings are already folded, and are being left that
way, you may raise (and lower) the 3-point hitch without
touching the fold circuit.
Lowering 3-Point (Field Lower, Unfolded)
See sidebar for first pass.
1. Lower the 3-point hitch to field setting.
2. Set hitch to Depth Control mode.
3. Set fold circuit to Float.
If you are already in forward motion, the knives or tines
will pull the applicator to application depth. Otherwise,
the applicator will rest on the knives or tines until pulled
forward.
Lowering 3-Point (Parking/Service, Folded)
Deploy parking stands (page 36) if parking, storage or
service is the intention.
If the wings are already folded, and are being left that
way, you may lower (and raise) the 3-point hitch without
touching the fold circuit.
First Pass Lowering:
• If the wings are drooped, retract the fold circuit
(page 59) to bring the wings into contact with the
wing locks, or to wings level. Set fold circuit to Neutral
until lowered to ground.