Great Plains ADC1150 Operator Manual - Manual (Page 19)

17
Section 2 Operating Instructions
6/15/05 ADC1150 Air Drill Cart 167-101M
Great Plains Mfg., Inc.
Field Operations
For seed metering, the in-cab rocker switch must be on.
You do not need to turn the switch on and off while seed-
ing. A switch on the implement rockshaft automatically
turns seed metering off when the implement is raised
above an adjustable height. To adjust the switch, refer to
Electric Clutch Switch Adjustment, “Adjustments,” page
39.
For normal seeding operations:
1. Check that the cart tires are properly inflated as indi-
cated by Tire Inflation Chart, “Appendix,” page 53.
2. Check that all seed hoses are connected and clear of
foreign material. Check openers for plugging.
3. Set the seed rate as described under Setting Metering
Rate, “Adjustments,” page 20.
4. Check that the in-cab rocker switch is on.
5. With the tractor at a low idle speed, energize tractor
hydraulics for fan. Lock hydraulic lever in place for
continuous operation. Refer to your tractor operator’s
manual for instructions on operating hydraulic motor.
6. Check that the bottom of the fan rotor turns toward the
rear of the cart. If not, reverse the direction of the hy-
draulic flow from the tractor.
7. Run fan for at least 15 minutes before seeding. Hy-
draulic fluid must be warm before fan and wing down
pressure will operate properly.
8. Check bin-lid and meter-box seals for air leaks. Adjust
the latch or replace the seals to prevent leakage.
NOTE: It takes only a very small air leak to cause large
variations in the seeding rate and pattern.
9. Watch the air drill monitor and adjust fan speed by in-
creasing or decreasing hydraulic flow from the tractor.
Use the following guidelines and the fan speed chart
to properly adjust fan speed.
•
Higher fan speeds improve seed distribution, but high
fan speeds also increase the chance of seed damage
and bounce.
•
At first, adjust fan speed to the high end of the sug-
gested range. Watch for excessive seed cracking and
seed bounce from the furrow, then reduce fan speed if
necessary.
IMPORTANT: 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.
IMPORTANT: Do not reverse hydraulic flow with the fan
running.
•
Follow the chart below as a guide. Optimal fan speeds
will depend on implement width, row spacing, seeding
rates, seed weights and seed size. Increase fan
speed for heavier seeding rates or seed. Reduce fan
speed for lighter seeding rates and seed more prone
to cracking.
Fan Speed Chart
!
WARNING!
Make sure no one is in the way of the drill before moving. Do
not allow any one to ride on the drill.
10. Pull forward, lower drill and begin seeding.
11. Be aware of the 5 to 10 feet needed for seed to reach
the openers. If you stop in the middle of the field, raise
the drill and back up 10 feet, then restart seeding.
12. When finished seeding, turn the in-cab switch off.
Seeds Fan RMPM
Sunflowers 2,250 - 3,000
Wheat 3,250 - 4,000
Soybeans 2,750 - 3,500
Milo 3,250 - 4,000
IMPORTANT: Do not exceed a fan speed of 5000 rpm.
Refer to Installation and Setup, “System Monitor,”
page 41, for instructions on setting the in-cab monitor to
sound fan-speed alarms.