Great Plains NTA3007 Operator Manual - Manual (Page 88)

84 NTA907 or NTA3007 Table of Contents Index Great Plains Manufacturing, Inc.
166-371M Table of Contents Index 2012-07-02
Setting Material Rates
Rate setting details are covered in the Seed Rate Manual
167-085B, which also contains seed and fertilizer rate
charts. The topic is covered only in summary form in the
present manual.
The NTA907 or NTA3007 drill is a volumetric implement.
For a given metering configuration, rates will vary for
materials with different density and granularity. The rate
charts provide starting point, but calibration is essential
for accurate application (even if using both meters for the
same material at the same rate). Material rates are set
independently for each hopper and meter.
Check Contact Tires
Reliable material rates are only achieved if the ground
drive system is working properly. The transport tires and
contact drive tires must be the correct size, and must be
inflated to factory specifications. Check tire pressures,
particularly the contact tire pressures, whenever loading
seed or fertilizer. See page 166.
Always replace worn tires with the correct size.
Check Flute Shaft Type
For some unusual very high rate applications and some
small seeds, Great Plains offers alternate meter flute
shafts (page 158) that change rates to 150%, 200% or
~25% vs. the factory standard shaft.
Refer to Figure 86
(which depicts a single flute “star” with its halves, a single star
mated, two stars staggered, and a filler)
Know your “stars” setup. If your drill has never been
changed from factory standard, you have standard meter
flute shafts with 2 “stars” (4 halves) per outlet. How many
and what type of “stars” you have determines which rate
chart to use.
Refer to Figure 87 (depicting an inspection from below meter)
If the configuration is not known, inspect the flute shaft
from the hopper lid (if hopper empty), or from below the
meter, with the calibration door fully open. It is not
necessary to remove the shaft. Inspect the flutes
(
or ), and filler rings at active outlets.
On a standard “2 star” shaft, each seed drop outlet
contains two standard flute sets (4 halves
), each pair
staggered slightly from the next. Unused outlets are fully
blocked by filler rings
.
On a “3 star” shaft, each outlet contains 3 flute sets.
On a “4 star” shaft, each outlet contains 4 flute sets,
with no fillers between adjacent drops.
On a small seed shaft, each outlet contains one set of
shallow flutes
.
See also “Changing Meter Flutes” on page 185.
EN
B 5 8 0 7 6 1
0 0 2 / 3 / 4 0 e t i r P
0 1 0 2 t g r y p o ©
Manu acturing Inc
www g eatplainsm g com
Seed and Fertilizer Rate Charts
for: AD4010HD Air Drills,
NTA607HD or NT
A2007HD Air Drills, NTA907HD or NT
A3007HD Air Drills, and
ADC2350 or ADC2350B Air Drill Carts
with all compatible air drill implements
The fo lowing pages are to assist in the proper se
ting of seeding and fer ilizer rates for the air dr
i l implement To assu e the mo t accu ate app i at on ra es t s recommended hat he ir d i l be ca ib at d or the
de i ed ma er a s at he t me of p an ing
Figure 86
Standard / Small Stars and Filler
32400
1
3
2
Figure 87
Checking Flute Shafts
26426
4 1 3
1 2 3
1
4
1
1
2