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M2(W) / M3(W) / M6W
28
PRACTICAL TEST
In case you want to make a practical test in the field it is possible to place test trays in the
field
. Such a test must be done very carefully - and the test can if it is not correct - be
misleading.
Not sold by BOGBALLE - information available from your dealer.
The test has a primary purpose - by adjusting the PTO rotations on the machine, to ensure
the required spreading to BORDER
(see examples of HEADLAND spread patterns to border on the next pages).
As main rule the HEADLAND spread width will:
Be increased by
approx. +1 meter for each + 50 rpm.
Be decreased by
approx. -1 meter for each – 50 rpm.
If the PTO-rotations are changed in relation to the three categories, respectively:
Minimum,
Medium and
Maximum - the quantity also has to be changed,
respectively:
+50 rpm / +10% and -50 rpm. / –10%
TEST WITH TEST TRAYS
•
The test trays are placed as shown on the sketch and with the distance stated in the
table.
•
The purpose of the test is to determine how large a quantity is landing AT
BORDER - in proportion to the GENERAL AREA of the field.
•
The machine is adjusted in such way a MEDIUM- headland spreading is
achieved, with 25 – 70 % of the quantity of the GENERAL area AT BORDER.
SPREAD WIDTH (m) TRAY DISTANCE (m)
12 1,0
15-16 1,5
18 2,0
20-21 2,5
24 3,0
27-30 3,5
32-33 4,0
36 4,5
42 5,5
MEDIUM :
25 to 70 % at border / (0,25 – 0,70)
MINIMUM :
-50 rpm. / - 10 %
MAXIMUM :
+50 rpm. / +10%
MEASURING and CALCULATION
•
Quantity AT BORDER:
The contents in the 3 trays AT BORDER is
added and the quantity is divided by 3.
•
Quantity OVER GENERAL AREA:
The contents in the 4 trays in GENERAL AREA
is added and the quantity is divided by 4.
Quantity AT BORDER is divided with
QUANTITY IN GENERAL AREA.
Is the result between 0,25 and 0,70 the spread
pattern on headland corrsponds a MEDIUM
pattern.
Is the result not between 0,25 and 0,70 the
machine is set respectively
±
50 rpm. /
±
10%,
until a MEDIUM pattern is achieved.
MINIMUM / MAXIMUM is achieved by
changing PTO by
±
50 rpm and change the
quantity by
±
10% respectively.
Tray distance
Tray 1, 2 and 3
3 2 1