Vicon RO-C 1400, User Manual, Page: 81 / 157

To be done before spreading
81
A tray test checks the distribution of the fertiliser as the spreader
distributes it. The results of this test will indicate if you can improve the
settings of the spreader, thereby improving the distribution of fertiliser
and limiting loss.
Tray tests can be performed by specialised companies, but it is also
possible to perform this test on your own. You will have to purchase
some materials for it, however.
We recommend that you request a specialist company to perform the
tray test as they can also provide you with advice and answer your
questions.
When to perform the tray test:
•
When using fertiliser types not indicated in the spreading chart
book.
•
When using fertiliser types with varying distribution and density
from the values indicated in the spreading chart book.
•
When using fertiliser of moderate quality.
•
Test should be carried out annually on the left and the right side to
check the equal distribution of both spreading discs.
•
After each change to the spreading mechanism of the spreader or
when parts are replaced.
I
NDICATION
Always perform a calibration test first and determine the correct
dosing setting before checking the spreading pattern. Changes to the
dosing setting will also have an influence on the spreading pattern!
→
See paragraph »Calibration test« on page 75.
I
NDICATION
Weather conditions have a great influence on the spreading pattern
while spreading, as well as while performing the tray test. The tray test
should be performed with dry weather, low humidity and with a
maximum wind speed of 3 m/s (wind force of 2).