Great Plains NP4000B Operator Manual - Manual (Page 45)

Great Plains Manufacturing, Inc. Table of Contents Index Preparation and Setup 41
2014-05-14 Table of Contents Index 417-199M
Hydraulic Hose Hookup
High Pressure Fluid Hazard:
Shut down tractor before making hydraulic connections.
Only trained personnel should work with system hydraulics.
Escaping fluid under pressure can have sufficient pressure to
penetrate the skin causing serious injury. If an accident
occurs, seek immediate medical assistance from a physician
familiar with this type of injury.
Use paper or cardboard, NOT BODY PARTS, to check for
leaks. Wear protective gloves and safety glasses or goggles
when working with hydraulic systems.
Refer to Figure 14
On applicators with more than one hydraulic circuit,
hydraulic hoses are color coded to help you hookup
hoses to your tractor outlets. Hoses that go to the same
remote valve are marked with the same color.
To distinguish hoses on the same hydraulic circuit, refer
to hose label.
• The hose under an extended-cylinder symbol feeds a
fold
a
cylinder base end (lift cylinder rod end), or the
return side of a hydraulic motor.
• The hose under a retracted-cylinder symbol feeds a
fold cylinder rod end (lift cylinder base end), or the
pressure side of a hydraulic motor.
Use a regular remote and not a dedicated tractor 3-point
remote
b
.
Secure hoses and cables so that they have sufficient
slack for hitch movements, but cannot get caught
between moving parts of fertilizer applicator. Failure to
safely route and secure hoses and cables could result in
damage requiring component repair/replacement, and
lost field time.
Color Function
Red Fold, Lift, Weight Transfer
Black Hydraulic Pump Drive (Option)
a. Fold and lift functions are combined on the NP4000 product family. When fold is extending, lift is retracting. The handles are coded for
fold priority. For the Extend/Retract terms in this manual to have their intended results, connect the extend and retract handled hoses
to extend and retract remote ports respectively.
b. Some tractors provide a special remote pair at the 3-point hitch arms. On some tractor models, this circuit has specific flow and/or
pressure-sensing behavior intended for certain applicators (other than Nutri-Pro ® ). Nutri-Pro ® lift and/or fold and weight transfer may
not function on this type of circuit.
Machine Function Risk:
The NP4000/A/B weight transfer system requires a tractor
with closed center hydraulics. Open center hydraulics are
incompatible.
Figure 14
Hose Handles
31733