Great Plains NTA2007 Operator Manual - Manual (Page 43)

Great Plains Manufacturing, Inc. Table of Contents Index Operating Instructions 39
2012-01-05 Table of Contents Index 166-372M
Lowering and Raising Drill
Lowering/Raising Safety Information
Crushing Hazard During Lowering:
Stay clear of wings and openers during lowering and raising.
Wings are extremely heavy and are driven down with hydraulic
pressure. Coulters and opener discs are sharp. During
lowering, openers will cut or crush anything beneath them,
and can cause serious injury or death.
Crushing Hazard While Raised:
Use lift lock (page 38) and gauge wheel lock channels when
working above or beside openers.
Without locks, centre section and wings are held up only by
hydraulic pressure, and slowly lower over time. They may
lower more rapidly if the hydraulic system is damaged. They
lower rapidly if the hydraulics fail, or the Lift circuit is set to
Float or Retract.
Shoving Hazard:
Drill length changes by 56 cm (22in) during raising and
lowering. Injury is possible.
Implement casters and row units move forward during raising,
and backward during lowering. Gauge wheels move forward
during lowering. Casters may swivel. Tractor may move in
some circumstances.
Set tractor brakes / use Park to avoid tractor movement.
Remain clear of all tires and row units during raise and lower.
Equipment Damage Risk:
Do not lower while any folding or unfolding operations are
under way or partially complete. Openers can dig in or drag
on ground and be damaged.
Note: Gauge wheel lock channels are provided to hold
the wings of an unfolded implement at the fully
raised position, for maintenance only. These
channels are an important safety feature for
maintenance, but are not used in normal
operations.