Great Plains ADC2220 Operator Manual - Manual (Page 37)

Great Plains Manufacturing, Inc. Table of Contents Index Operating Instructions 33
2012-10-17 Table of Contents Index 167-073M
Field Operations
This section presumes that all pre-operation checks have
been made on both air cart and drill, the cart is loaded
with seed and any treatments, and the rate has been set
and calibrated.
Rate setting, and gearbox operation, are covered at
“Meter Rate Adjustment” on page 66.
Refer to Figure 29
Seed meter gearboxes are ground driven through an
electric clutch. The clutch is controlled by an implement
lift switch, which is in series with an On/Off switch
at
the seed monitor console. The implement must be
lowered, and the console switch must be ON (|) for seed
to meter. This switch also controls valves on NTA drills,
and must be off for folding.
Note: The switch can only override the automatic
metering to Off. It does not engage the clutch if the
implement is lifted.
See “Loup II Monitor Operation” on page 38.
Single Hopper Operation
If materials are being applied from a single bulk hopper,
disengage the gearbox clutch for the other gearbox.This
minimizes wear on the gearbox.
Final Field Checklist
Planting Sequence
1. Lower drill 5 to 10 feet (1.5 to 3 m) before initial
seeding point.
2. Pull forward and begin planting.
3. Raise drill for turns (meters stop automatically - it is
not necessary to use the cab rocker switch).
Planting
Be aware of the 5 to 10 feet (1.5 to 3 m) of drill-lowered
operating distance required for seed to reach the row
units.
If you stop in the middle of a pass, raise the drill and back
up 10 feet (3 m) before resumption of seeding.
Planting Speed
The seed rate charts were developed at a field speed of
6.5 mph (10.5 km/h) using a single hopper, standard
2-star flutes and the seed density shown in the chart.
The chart or calibrated rates also apply to lower speeds.
Higher speeds are possible, particularly with dual hopper
operation and/or optional high-rate flutes. Test to make
sure that material is being delivered at the desired rates,
and that seeding depth is maintained.
At higher speeds, check for signs of:
low seed flow (due to seed cavitation in the meter),
seed plugging (due to fan air flow insufficiency),
row-to-row rate variation (insufficient fan) and;
inconsistent seeding depth (due to opener bounce).
Figure 29
Monitor Console and Switch
29013
1
1
❑ Check tire inflation (page 107).
❑ Check all seed hoses connected.
❑ Check for openers for plugging.
❑ Set seed meters per chart and calibration.
❑ Set seed monitor alarm limits.
❑ Check diverter valve set to implement.
❑ Check fan shut-off valve open (fan enabled)
❑ Set fan to speed suitable for seed. Watch fan at
start-up to ensure correct direction of rotation.
❑ Run fan for at least 15 minutes before planting.
❑ Check air pressure gauge for 12 to 25 inches of
water pressure.
❑ Check for air leaks at lids and meter box seals.
❑ Set electric clutch rocker switch (at console) to On.
❑ Complete drill checklist.