Great Plains NTA3007 Operator Manual - Manual (Page 76)

72 NTA907 or NTA3007 Table of Contents Index Great Plains Manufacturing, Inc.
166-371M Table of Contents Index 2012-07-02
Fan General Information
The hydraulic fan supplies the air stream that carries
materials from the meters, through the primary hoses to
the towers, then to the secondary hoses to the rows.
The fan needs to be running in the correct direction, and
within a narrow speed range, to reliably deliver material
at your calibrated rates.
Refer to Figure 76
If an auger is installed on the drill, it shares the hydraulic
circuit with the fan.
1. Turn on the seed monitor. Configure it for the
materials and rates planned. Set reasonable alarm
levels for low flow rate alerts.
2. If no auger is installed, skip to step 5.
3. Set the fan/auger hydraulic circuit to neutral for
setup.
4. Check the fan/auger selector valve is set to FAN.
This valve is located inside the right rear of the
mainframe.
5. With the tractor engine at low rpm, slowly Extend the
lever for the circuit. Bring the fan up to recommended
speed (page 98). Let the fan warm up for 15 minutes
before planting.
6. Lower the drill 1.5 to 3 m (5 to 10 feet) before
planting is to begin. It takes a few seconds for seed
to travel from the meters to the rows.
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.
7. Mind the seed monitor console for seed rate alerts.
An apparent blockage, or irregular or no flow across
the drill, may be an indication that the fan is running
backwards.
8. Leave the fan running during field turns. Material flow
is shut off when the openers are raised.
9. At the end of application, raise openers. Stop
material flow before shutting off the fan.
10. Shut off the fan by carefully moving the circuit lever
to Float or Neutral. Avoid moving the lever into
Retract.
Figure 76
Fan/Auger Selector Valve
32392
Note: If the fan plumbing or hitch hook-up 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.
See “Fan Speed Adjustments” on page 98 for
further information.
Fan Setup: Hydraulic Circuit Operation
Lift
Fan,
Auger
Fold, Tilt,
Marker
Transport
Hooks
Extend
Float or
Neutral
Neutral Neutral
Planting: Hydraulic Circuit Operation
Lift
Fan,
Auger
Fold, Tilt,
Marker
Transport
Hooks
Retract Extend Neutral Neutral
End Planting: Hydraulic Circuit Operation
Lift
Fan,
Auger
Fold, Tilt,
Marker
Transport
Hooks
Extend
Float or
Neutral
Neutral Neutral