Great Plains YP1625 Operator Manual - Manual (Page 107)

Great Plains Manufacturing, Inc. Hydraulic Drive Operating Instructions 103
07/09/2009 401-226M
Refer to Figure 125
8.
If this is the first time the unit has been calibrated,
this error can be large. Accept the new speed cali-
bration and re-run the course. Re-calibrate until the
error is within 5%. The cab console will give you the
option each time you calibrate of accepting the new
settings, or keeping the previous settings.
Operations
Before going to the field
Once calibration procedure above has been followed,
Console will store the calibration and rate information
until new information has been entered.
Refer to Figure 126
1.
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.
Note: For units with P/N 21567 skip step 2.
2. 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 differences:
Volumetric: use extreme caution when performing
this calibration to prevent injury due to drive entan-
glement. Also, turn drive gauge wheel with a consis-
tent speed of at least 30 rpm for maximum
calibration accuracy.
Singulated: Rather than calibrating from a standing
start, measure the distance as listed in the GP man-
ual, and set two flags. Start driving far enough in
advance of the first flag that your unit is operating at
field speed (min. 3 mph) during the calibration dis-
tance.
Figure 125
Save/Ignore Result
22794
Figure 126
Veris Enter VR Mode
22710