APV 5.2 Operating Manual

13
Calculation of the spread rate:
Seeding rate (kg/ha) =
Thousand grain weight TGW (g) x grains/m² x
100
Germination capacity (%)
If you selected "Calibrating in grains/m²" in the Settings menu, the following points appear in the
Calibration menu:
Working width?
Enter the working width here. Take note of the working width overlap.
Forward speed?
Enter the forward speed here.
Grains/m2
Enter the desired grains/m² here.
Thousand grain weight
Enter the respective thousand grain weight here.
Germination capacity
Enter the germination capacity of the seed here.
Calibration time?
Set the duration or the area for the calibration test here.
If a calibration button is installed and YES was entered in the Programming
menu for "Calibration button equipped?", this point does not appear.
TIP:
For small seed types, e.g. canola, phacelia, poppy etc., it is best to calibrate for 2 minutes.
A calibration time of 1 minute is standard.
For larger seed types, e.g. wheat, barley, peas etc., 0.5 minutes of calibration is most suitable.
NOTE!
Before you start the test, check whether you have removed the calibration cover and are using
it or the calibration slide. Check whether the calibration bag or a collection bucket is place
precisely under the outlet! The calibration test can be aborted at any time by pressing the
seeding shaft button or the fan button on the control box.
Start test ?
When all of the values are correctly set, start the test for the respective motor
with OK.
Test in progress!
Calibration test in progress: After starting, the seeding shaft begins rotating
automatically without the fan motor. The seeding shaft stops automatically
after the set time. If a calibration button is installed, the test is only stopped
once it is pressed.
Entry of the calibration
test:
Now weigh the calibrated seed quantity (deduct the weight of the collection
bucket or the calibration bag) and enter the weight. Confirm with OK.
To really spread the desired spread rate, we recommend repeating the calibration test until the message
"Test not precise! Repeat?“ no longer appears. If "Seeding shaft speed too high" appears on the display,
the seeding shaft is not able to rotate fast enough. If "Seeding shaft speed too low" appears, the seeding
shaft is not able to rotate slowly enough. To fix this error, you can replace the seeding shaft with a larger
or smaller seeding shaft (see also chapter 6.1 Notes).

APV 5.2 Specifications

General

Brand	APV
Model	5.2
Category	Control Unit
Language	English