Great Plains 2420P Operator Manual - Manual (Page 75)

2012-04-17 118-769M
73 Veris Drive Operating Instructions
Operations
Before going to the field:
1. Once calibration procedure above has been followed, Console will store the calibration and rate information until
new information has been entered.
2. Turn on Console by pressing On/VR key. Pressing the On/VR key twice will put the unit in VR (Variable Rate) mode.
Leave Console in manual mode. See Figure 3.
NOTE: For units with PN 21567 skip step 3.
3. To double-check calibration before planting, follow same procedure as for mechanical ground drives as outlined in
Great Plains Precision Seeding System Operator’s Manual, with these difference:
a. Volumetric: use extreme caution when performing this calibration to prevent injury due to drive entanglement. Al-
so, turn drive gauge wheel with a consistent speed of at least 30 rpm for maximum calibration accuracy.
b. Singulated: Rather than calibrating from a standing start, measure the distance as listed in the GP manual, and
set two flags. Start driving far enough in advance of the first flag that your unit is operating at field speed (mini-
mum 3 mph) during the calibration distance.
In field:
1. Turn on Controller Console by pressing the On/VR key. Green light above On/VR key will illuminate when power is
on. Pressing the On/VR key twice will put the unit in VR mode. See Figure 1. VR will appear on the screen along with
the Rate that is being sent from the computer. Press On/VR key again to toggle back to manual mode. (Mode and
rate changes take effect with the release of the key).
Figure 23. Main Operating Screen Set on VR mode.
2. To change rates manually whether in manual or in VR mode, simply touch the Up/Down
arrow keys. This will change the Controller to the rate you select manually. To return to
VR, simply touch the On/VR key to toggle back to VR mode.