- 37 -
- 37 -
Fig. 6.50
Fig. 6.50
CALIBRATION TEST.
Dispenser
Operating speed
Rate
Calibration factor
g/turn
min.
1. Start
1ST SEED
2ND SEED OR FERTILIZER
MICRO/FERTILIZER KIT (1ST MOTOR)
MICRO/FERTILIZER KIT (2ND MOTOR)
Speed
UPON COMPLETING THE FLOW TESTS, CLO-
SE THE VENTURI INJECTOR COVER, PLACE
THE CALIBRATION KNOB IN THE “
OK
”POSI-
TION AND LOCK IT (Fig. 6.51).
Fig. 6.51
Fig. 6.51
IMPORTANT:
IN DOSAGES THAT ARE CLOSE
TO TOTAL PRODUCT QUANTITIES OF 450 Kg/Ha
(TAKE INTO ACCOUNT SEED, FERTILIZER AND
MICROGRANULATE), CHECK THAT THERE IS
NO MATERIAL BUILDUP CLOGGING THE COM-
PRESSED AIR SYSTEM. IF THERE IS, REDUCE THE
DOSE.
IMPORTANT:
AFTER COMPLETING THE FIRST
HECTARE OF WORK, CHECK THAT PRODUCT
CONSUMPTION IS AT THE DESIRED LEVEL.
6.6 SEED DOSE FIELD TESTING
In case of differences between the test and the dose being
actually distributed by the machine due to, for instance, very
uneven or soft terrain or low-pressured wheel, etc., an ex-
perimental test can be performed to determine the
ACTUAL
AMOUNT OF ROTATIONS
in the
TRANSMISSION WHEEL
.
Fig. 6.52
1-
With a measuring tape, mark the metrical distance in the
plot as indicated in the following chart:
MACHINE TYPE
METERS TO COVER
600
41,7
700
35,7
2-
Mark the wheel for facilitating adding the amount of rota-
tions along the trajectory (Fig. 6.53).
Fig. 6.53
3-
Go over the mentioned distance with the seed driller in
operational position. In this way, the real amount of ro-
tations necessary in the previous flow test is determined.
Performing the test with this amount of rotations, the
kilograms per hectare that the machine actually distrib-
ute is determined.
IF THERE IS TOO MUCH DIFFERENCE BETWEEN
THE OBTAINED ROTATIONS IN THE FIELD TEST
AND THE AMOUNT OF ROTATIONS INDICATED
BY THE MANUFACTURED (SECTION 6.5 SEED
FLOW PRE-TESTING), MAKE SURE THAT THE
TRANSMISSION WHEEL IS ALWAYS IN CONTACT
WITH THE FLOATING WHEEL; OTHERWISE, AD-
JUST THE TENSIONER NUTS (Fig. 6.53).
