Great-plains NTA2007HD Operator Manual User Manual Page 34

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30 Great Plains Manufacturing, Inc. Contents Index NTA607/2007HD
166-283M Contents Index 04/04/2011
Unfolding and Folding
Unfold/Fold: Safety Information
Overhead crushing hazard:
Unfold and fold implement only if fold hydraulics are bled free
of air and fully charged with hydraulic oil. Keep away and
keep others away when unfolding or folding.
Electrocution Hazard:
Keep clear of overhead power lines when unfolding, operating,
folding or transporting the air drill. Machine is not grounded.
At higher voltages, electrocution can occur without direct con-
tact. Any line voltage present on implement, cart or tractor can
cause severe injury or death.
Pinch Point and Crushing Hazards:
Keep people away from the drill and tractor during folding.
Risks include pinching or crushing at pivot points and at mul-
tiple sites in pivoting assemblies.
Use wing fold locks. If a hydraulic failure occurs, or hydraulic
levers are moved, unlocked wings could fall suddenly causing
a major road accident, or crushing anything near the wings,
resulting in death or serious injury, and property damage.
Falling Hazard - Tires Not a Step:
Do not use tires as steps or platforms. All tires can be in light
ground contact, or free to spin, when implement is lowered.
Wing gauge wheel tires are off the ground in lift.
Unfold/Fold: About the Hydraulics
The fold/unfold (and weight transfer) functions are on a
hydraulic circuit that is shared with the hydraulic fan on
the air cart. The fan must be disabled during fold and
unfold, but is not disabled for weight transfer.
Part of the unfold/fold operation involves the Lift circuit.
To meet highway clearance requirements, the wing
gauge wheels are in the Lowered configuration during
fold, and are moved to the Raised configuration prior to
unfold.
The seed monitor does not need to be active during
unfold. When the implement is raised, with the seed
monitor off, the wing solenoid valves default to Fold cir-
cuit enabled.
Null4:
Wing Tilt Risk:
Fold only on hard level ground. if parked across a slope, wing
lock pins could be difficult or impossible to remove or insert.
Equipment Damage Risk:
Raise implement before unfolding or folding. Folding with
openers lowered causes wing inside rows to dig or drag side-
ays. Damage is likely.
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