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Maintaining Depth and Soil Contact
After coulter depth is set, adjust coulter
depth control wheel to maintain that depth.
Remove pin, raise or lower wheel to desired
position, and reinsert pin (Figure 3). In field
operation the tire should have pressure on it,
providing evidence that is holding the coulter
and row unit at the desired depth.
Closing/depth control wheels have three
functions: 1) close soil slot created by other
soil engaging components, 2) serve as an
EC electrode, and 3) aid in depth control.
Adjust depth using T handle (Figure 4) so
that they are making aggressive soil contact.
This typically requires a shallow setting.
If soil slot is not closing properly, the rear
closing/depth wheels are adjustable to
increase or decrease the amount of soil
pinched into the furrow made by the optic
module (Figure 5). There are three
adjustment positions, and the unit is shipped
in the center position.
Down pressure
To ensure depth is consistently
achieved, fill airbag with up to 75 psi
(520 kPa) with implement in raised
position—no ground pressure on
unit. DO NOT OVERFILL AIRBAG
AS DAMAGE WILL OCCUR.
Adjustment bolts
Adjust forward for more aggressive
closing action
Adjust rearward for less aggressive
closing action
Figure 5
Figure 6
Figure 3
Figure 4
5-2
Pub# OM22-iScan EC-OM
Move T handle
forward to improve
closing wheel soil
contact
Airbag
gauge
Airbag with
valve stem
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