Ground Drive - Calibration
Page
36
04/04
Fig. C7 Calibration Chart Decal.
An example is shown on the
calibration chart (Fig. C7), for a planting
width of 13.5 metres. In this example, an
application rate of 44kg/ha is desired. By
following the dotted line up and across we
can find the intersection, then follow the
curved line down to determine the
appropriate sample weight required. In this
case 1.6kg sample after 20 turns of the
handle.
NOTE:
Always use kilograms and hectares
when using the chart. R
efer ‘Conversion
Table’ (page 58) to convert lb/acre to kg/ha.
Step 7. Adjust setting to obtain correct
application rate and re-test. To
adjust the setting simply unlock
the handle, rotating the handle
anti-clockwise, and either increase
or decrease the setting.
NOTE:
It is recommended that when
adjusting the variator setting the operator
goes past the desired setting (higher rate) a
short distance and then rotates the handle
back to the required setting. This method
of adjustment will ensure that there is no
slack in the cable.
After adjustment lock handle by
rotating clockwise (Fig. C8).
Fig. C8 Variator Adjustment.
IMPORTANT
When the calibration
procedure is completed refit the
meterbox hatch and engage the
drive pins to allow the drive system
to operate normally.
