Great Plains NTA2007 Operator Manual - Manual (Page 39)

Great Plains Manufacturing, Inc. Table of Contents Index Operating Instructions 35
2012-01-05 Table of Contents Index 166-372M
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 drill. Machine is notgrounded. At
higher voltages, electrocution can occur without direct
contact. 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
multiple 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.
Wing Tilt Risk:
Fold only on hard level ground. if parked across a slope, wing
lock bars could be difficult or impossible to engage or release.
Unfold/Fold: About the Hydraulics
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
circuit enabled.
Equipment Damage Risk:
Raise implement before unfolding or folding. Folding with
openers lowered causes wing inside rows to dig or drag
sideways. Machine damage is likely.