Great Plains ADC2220 Operator Manual - Manual (Page 96)

92 ADC2220 Table of Contents Index Great Plains Manufacturing, Inc.
167-073M Table of Contents Index 2012-10-17
No Seed Flow
at One or
Several Rows
Plugged seed hose See page 93.
Plugged opener seed tube Lift up drill, expose bottom of seed tube and
clean out.
Debris in tower distribution ring. Remove tower cap and clear debris.
Air leaks, resulting in low seed flow, then seed
hose plugging Check hopper lids, meter seals, manifold caps
and seed hose connections. Adjust latch and/or
replace seals as needed.
Fan speed too low, resulting in low seed flow,
then seed hose plugging See “Recommended Fan Speeds” on page 74.
Fan won’t run fast enough, resulting in low
seed flow, then seed hose plugging Tractor must be able to supply 18 gallons/minute
at 2000 psi.
Check that hydraulic fan check valve is not
installed backward.
Obstruction in meter Empty hopper and clean out meter. Have
strainer in place for all operations. Always clean
out residual materials after planting.
Hydraulic fan running in reverse, resulting in
low seed flow, then seed hose plugging Check hydraulic circuit flow direction.
Meter sprocket damaged Replace seed cup sprocket.
No Seed Flow,
All Rows Clutch switch off in tractor cab Turn clutch switch on.
Implement lift switch out of adjustment or failed. Check, adjust or replace switch. See implement
Operator Manual.
Chain broken or removed Inventory chains against routing diagrams.
Gearbox clutch disengaged Check gearbox clutches engaged and pinned.
Electric clutch failed Replace clutch. On an emergency basis, use
the clutch lock-up procedure on page 74.
Clutch circuit failed Replace failed component or cable. On an
emergency basis, use the clutch lock-up
procedure on page 74.
Clutch circuit fuse open Correct problem leading to blown fuse and
replace fuse. On an emergency basis, use the
clutch lock-up procedure on page 74.
Sprocket loose on shaft Check all sprocket pins, keys and set screws.
Insufficient fan airflow Check Magnehelic gauge with fan running.
Check for sufficient oil reserve and flow.
On early carts, check fan pressure switch.
Switch should close at 800 psi and higher.
Problem Cause Solution