Duncan Enviro 740, Руководство пользователя

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17
Pt. No. 67304
Issue 1217
Basic Calibration Procedure
Gearbox Setting Lever
To set the seed rate at the gearbox, slacken the star knob by
turning counter-clockwise and push from below into the position
indicated in the Sowing Chart. Retighten the star knob firmly.
Refer Fig 11.
Caution
The settings shown in the Sowing Charts (kg/ha) can only
serve as reference values. Deviations may occur caused by
differences in the size, shape, density of the grain and by the
dressing agent.
Therefore prior to any sowing, always carry
out calibration trials to accurately determine the actual
seed rate.
Using the stepless variable speed gearbox, the speed of the
metering shaft and thus the seed rate is set steplessly. The
higher the figure indicated on the scale (Fig 11) by the setting
lever the greater the seed rate.
Selecting the Gear Ratio
When required to operate at high seed rates the clutch output
sprocket is set at 19 tooth and the the gearbox input at 15 tooth
This is the standard setting as supplied ex the factory.
(Referred to as the High Speed Setting ). Refer Fig 12 and to
P22, Fig 23.
The alternative setting for lower seed rates is to reverse these
two sprockets so that the clutch output is 15 tooth and the
gearbox input is 19 tooth.
(Referred to as the
Low Speed Setting ).
Refer to P22, Fig 24.
Setting Seeder Shutter Slides
The varying flow properties of seeds require different shutter
slide positions which may be found in the Sowing Chart for the
individual type of seed. This corresponds to one of the three
settings in Fig 13.
Bottom Flap Settings
The various seed sizes require matching bottom flap clearances
below the metering wheel. The adjusting plate allows for 10
different settings. The required position for the seed type may
be found in the Sowing Chart. The control levers are located on
the LH end of the seedbox, (opposite end to the gearbox).
Number “1” corresponds to the minimum (closed) position and
“10” the maximum gap.
Refer Fig 14.
fig 13
fig 12
fig 11
fig 14
Fig25/A Fig25/B Fig25/C
Closed 3/4 Open Fully Open
10
10
1 1
A
B
C