Great Plains 2025P Operator Manual - Manual (Page 93)

8/14/2006 118-928M
91 Veris Drive Operating Instructions
5. Console display shows two numbers while operating:
“Set” rate is the rate you tell the system to plant, and
“Out” rate is the calculated rate based on the actual
rotations of the drive. The “Out” reading monitors the
drive system; it doesn’t monitor population. It verifies
that the drive system is functioning properly.
Note: The “Out” readings will normally fluctuate within 5%
of the “Set” rates. This fluctuation is evidence of the drive
system compensating for minor fluctuations in ground
speed.
6. If “Out” rate varies from the “Set” rate by more than
20%, an audible alarm will sound.
7. If Controller is powered directly from the battery or via
unswitched power port, make sure to power Console
off when tractor is shut down. This prevents tractor
battery drain.
Veris Drive Sprocket Change
For proper operation on finger meters (high range) it will
be necessary to switch from 12 tooth to 24 tooth Veris
Drive sprocket.
Refer to Figure 130
1. Loosen chain idler. Remove Veris Drive chain. Pull re-
taining clip from sprocket spacer (1). Remove spacer
(1) from Veris Drive shaft.
2. Slide 12 tooth sprocket (2) and 24 tooth sprocket
(3) towards Veris Drive until they rest against in-
side locking collar (4).
3. Replace spacer (1) on shaft between 24 tooth
sprocket (3) and outside locking collar (5). Hold
spacer in place with retaining clip. Install Veris
Drive chain. Tighten chain idler.
4. Reverse steps to switch back to 12 tooth sprock-
et (2) when operating 20 and 25 series meters.
NOTE: Make sure and switch to the proper sprocket
on both drives.
Calibration Table-Finger Meter (High Range)
Motor 24T Driver-Mainshaft 36T Driven
** Refer to seed chart to determine optimum planting speed for your nominal rate.
NOTE: Finger Meters require 24 tooth sprocket on Veris drive. Refer above for sprocket change.
Figure 130
Veris Drive Sprocket Change
22880
Crop Row Spacing Number of cells Min. Rate Max. Rate Cal #
Corn 20” 6 Finger Meter 13200 35800 750***
Corn 20” 12 Finger Meter 17500 47700 1501**
Corn 30” 6 Finger Meter 8800 24000 500***
Corn 30” 12 Finger Meter 17500 47700 1000**
Corn 38” 6 Finger Meter 9200 21000 395***
Corn 38” 12 Finger Meter 28000 50000 790**
Corn TR 30” 6 Finger Meter 17500 47500 1000**
Corn TR 30” 12 Finger Meter 35000 96000 2001**
Corn TR 38” 6 Finger Meter 18500 50000 790***
Corn TR 38” 12 Finger Meter 28000 80000 1580**
*** Extremely high rates on wide row spacing may require lower ground speed - refer to seed charts for mph limits.