36 | P a g e
Under the toolbox at the front of all trailed machines is a flow control valve tap
which controls the flow to the main lift rams and also the seeding shut-off ram.
The shut-off ram has a magnet attached to one end that starts and stops seed
dispensing based on its proximity to the parent sensor. Correct balancing is
essential to maintaining a responsive system.
Less flow means the shut off responds quicker but lift will be fractionally slower.
More open, will result in a quicker lift but will mean the shut off ram becomes lazy
and could result in over-seeding at the end of each run and delays at the start of
each run.
5.2.8 Calibration System
Is a simple valve to allow seed to drop through an outlet in the Seed/Fert transfer
pipe to calibrate the drill for a required seed rate. When the flange is pointing
down, the valve is shut. When the flange is pointing horizontal, the valve is open
(calibration position). Ensure this is closed before commencing seeding.
1. Open slide portal to allow seed to flow out of the Air Transfer Pipe directly
below the Orga metering outlet.
2. Switch the scales ON and check units (kg). Zero the scales with the weight of
the calibration bag.
3. Positions the calibration bag to the Air Transfer Pipe using the straps.
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