Great Plains NTA2007HD Operator Manual - Manual (Page 62)

58 Great Plains Manufacturing, Inc. Contents Index NTA607/2007HD
166-283M Contents Index 04/04/2011
Fan Field Operation
1.
Unfold the implement (page 30).
2. Set the Fan/Fold circuit lever to neutral.
Refer to Figure 54
3.
Set the fan shut-off valve to ON/open.
4. With the tractor engine at low rpm, slowly Extend the
lever for the Fan/Fold circuit. Bring the fan up to rec-
ommended speed (page 82). Let the fan warm up for
15 minutes before planting.
5. Lower the drill 1.5 - 3m (5-10ft) before planting is to
begin. It takes a few seconds for seed to travel from
the meters to the rows.
6. Leave the fan running during field turns. Meter drive
is shut off when the openers are raised.
7. At the end of application, raise openers. Stop mate-
rial flow before shutting off the fan.
8. Shut off the fan by carefully moving the circuit lever
to Float or Neutral. Avoid moving the lever into
Retract. The fan does not stop instantly. A check
valve in the fan circuit locally recirculates oil until the
blades coast to a stop.
Marker Operation (Option)
Dual markers are optional on the NTA607/2007HD. See
“Markers” on page 142 for ordering information.
Additional Marker Topics
See also:
“Marker Adjustments” on page 94, and;
“Marker Maintenance (Option)” on page 130.
Dual markers are on a dedicated hydraulic circuit which
contains an adjustable automatic sequence valve.
Marker circuits must be fully charged with oil and free of
air before operation. Before first use / after maintenance,
perform “Marker Hydraulic Bleeding”, page 130.
Null4:
Machine Damage Risk:
Always engage the fan with the tractor at a low engine speed.
Engaging the fan when the tractor is at high speed may cause
fan damage.
Do not reverse hydraulic flow with the fan running.
Note: If the fan plumbing or hitch hookup is reversed, air
flow rate will be very low or zero. If you are unable
to reach 3000 rpm, check hose connections.
Note: Fan speed is monitored and reported by the seed
monitor, but is manually controlled. The optimum
rate depends on the seed type, any treatments.
“Fan Speed Suggestions” on page 82 for further
information.
Figure 54
Fan Shut-Off Valve ON
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Null4:
Figure 55
Marker Folded, in Cradle
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