Great Plains ADC1150 Operator Manual - Manual (Page 67)

65
Section 5 Troubleshooting
7/28/10 Model 1150 1995 - 1997 167-058M
Great Plains Mfg., Inc.
Problem Solution
Actual seed rate is different from rate
desired. Air leaks; check for air leaks around lids and on bin. A small air leak can reduce
the seeding rate dramatically.
Gearbox, driver/driven speed change sprocket or driver/driven gears are not set
correctly. Check the seed rate charts and set them correctly.
Check the cart tires for correct pressure; over or under inflation will affect rates.
Seed treatment building up on meter; unload bin and clean out meter.
Foreign matter is blocking meter. Keep strainer in place and foreign matter out of
bin.
Electric clutch height switch is set too low; clutch is not engaging.
Faulty or corroded electric clutch harness connections letting the clutch disen-
gage; clean or replace terminals.
Fan speed too low, the pressure switch is not staying set. Run the fan at a higher
speed.
Running meter out of seed. Enough seed should be kept in the drill to cover the
agitator shaft.
Improper clutch sprocket installed; 45’ drills use 29t sprocket; 34’ drills use 38t
sprocket.
Gearbox shifters forced out of place by forcing the gearbox to shift with the clutch
handle engaged.
Erratic seeding pattern or emergence 1” hoses plugged; stop and raise the drill with the fan running. Hand crank the
meter to see if any hoses are plugged, refer to the Setting the Drill Seeding Rate in
the “Adjustments” section starting on page 46.
Air leaks; check carefully for leaks and adjust the latch or replace the seals as
needed.
Poor connection for the electric clutch leads letting the clutch cycle on/off.
Debris in tower blocking the hoses.
Driving too fast.
Opener not lined up with press wheel.
1” hoses are plugging. Hoses have too much slack; leave only enough slack for the drill wing flexing.
Fan speed is too low for seeding rate.
Damaged hoses need replaced.
Debris in seed too large for hose.
Openers are plugging with dirt. Drilling in wet conditions; never back up with openers down.
Turning too sharply will cause openers to inside of turn to back up and plug.
Tip angle is too flat, refer to Individual Opener Adjustments in the “Adjustment”
section on page 60.
2 1/2” hoses are plugging. Hoses are routed with too sharp of bends.
Fan speed is too slow.
The Meter is not shutting off when the fan is off.
Section 5
Troubleshooting