VRT Hydraulic Drive
– Trouble Shooting
Page
95
11/15
11. Unable to obtain a set application rate.
12. Unstable Application Rates displayed on
the screen while seeding.
Ground speed is too fast for a particular
product.
Sprocket ratio may need to be changed
from low to high ratio. This is done from the
right-hand side of the meterbox.
WARNING!
Switch tractor off before working on the
seeder’s metering system. Metershaft and
motors could turn at anytime. Recalibrate
metering system to suit new sprocket ratio.
Meterwheel reduction plates may still be
in place, restricting maximum output.
Check meterwheels are not clogged with
material.
Check calibration procedure. Compare
pulses/kg figure with previously recorded
samples.
Check meterwheels are assembled and
fitted to the metershaft assembly in the
correct orientation & rotate in the correct
direction.
Check
that
the
VRT
motor
and
metershaft assembly is rotating in the
correct direction (refer meterbox section in
manual).
If all application rates are unstable,
check ground speed on screen. If speed
varies check proximity sensor operation and
spacing on wheel target. Refer to the VRT
Maintenance section on page 91. Also
check that the target mounted wheel
bearings are adjusted correctly to prevent
excessive wheel play.
If one bin has an unstable rate check
that the sprocket ratio is set correctly for the
product being sown. Metering system may
not be able to obtain rate.
Check that the proximity sensor for that
particular bin is operating correctly. You can
do this from the tractor cab by going to the
Drive Ratio screen within the Alarms screen.
Refer to the VRT Maintenance section on
page 92 for further explanation.
NOTE:
If you experience a problem that is not solved by either the monitor’s operating manual
or the above trouble shooting section contact your local Gason Dealer for further instructions.