Veris drive sprocket change – Great Plains 2025P Operator Manual User 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.