Troubleshooting – Great Plains NTA3007 Operator Manual User Manual
Page 120
166-371M
2012-07-02
116
NTA907 or NTA3007
Great Plains Manufacturing, Inc.
Troubleshooting
See also:
See “Down-Pressure Adjustment Indications” on page 102, and
“Troubleshooting and Alarms” topic in the
DICKEY-john
®
Air Cart Control manual.
Problem
Causes
Solutions
No material flow
(all rows)
Contact drive not engaged - centre section
locks still in ROAD
Raise opener sub-frames. Move centre
frame locks from ROAD to FIELD.
Tire problems at contact drive
Check transport and contact tire sizes and
inflation (page 166).
Broken or removed chain(s) in drive system
Check chains against See “Chain Routing”
(page 175).
Removed final rate Range gear(s); for
example, single hopper operation with
incorrect meter disabled
Re-install gear(s) per chart and calibration
for affected meter.
Variable rate gearbox set to zero, or too low
Re-set gearbox per calibration.
Empty hopper
Load material.
Meter in use clogged
Rear meter in use, but front meter box (not in
use) is clogged.
Fan speed too low
Check pulses-per-rev setting for fan in seed
monitor (page 174). Increase fan speed to
recommended range (page 98).
Fan running backward
Reverse fan circuit hoses at hitch.
No material flow
(multiple rows)
Primary seed hose blocked
Check seed hoses for kinks, congealed
materials at low spots, nests and pests.
Tower inlet or turret blocked
No material flow
(one or two rows)
Seed tube blocked at row
Inspect and clear seed tube.
Tower port blocked for affected row
Disassemble distribution ring and clear
blockage.
False alarm - seed tube sensor
disconnected or failed
Run monitor self-test. Swap sensor with a
working row to verify failure. Replace sensor.
Material is flowing, but
is not detected by seed
monitor
This is normal during the first few meters/feet
of planting, as it takes some time for material
to reach rows.
Lower openers 3 m (10 feet) before planting
is to begin. Monitor does not check for
blockage during first 5 seconds.
Lift switch mis-adjusted, failed or mis-wired.
Check, adjust or replace switch (page 99).
Seed monitor disconnected at hitch
Connect seed monitor.
Planting too little
(some rows)
Partial blockage in meter chamber, seed
hoses, towers, seed tubes
Treat as blockage. See “No material flow
(multiple rows)” and “No material flow
(one or two rows)” in this table.