Great Plains NP30A 30-foot Operator Manual - Manual (Page 39)

Great Plains Manufacturing, Inc. Table of Contents Index Preparation and Setup 35
2014-05-20 Table of Contents Index 407-502M
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.
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.
Refer to Figure 14
To distinguish hoses on the same hydraulic circuit, refer
to hose label on handles.
• 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. Failure to safely route and secure
hoses and cables could result in damage requiring component repair/replacement, and lost field time.
Handle Color Hose Function
Blue Lift
Blue Lift and Fold
Gray Fold
Red
2013+ 5-Section
Fold, Lift, Weight Transfer
a. Fold and lift functions are combined on the pull-type and 2013+ 5-section 2-point NP40A configurations. 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 weight transfer system requires a tractor with closed
center hydraulics. Open center hydraulics are incompatible.
Figure 14
Hose Handles
31733