Great Plains 3N-3020 Material Rate - Manual (Page 15)

4/28/2004 196-366B
Great Plains Mfg., Inc. 15
Operations
Before Going to the Field
1. Once calibration procedure has been fol-
lowed, Console will store the calibration and
rate information until new information has
been entered.
Refer to Figure 29
2. Turn on Console by pressing ON/VR (Vari-
able Rate) mode. Leave Console in manual
mode.
In Field
Refer to Figure 29
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.
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.)
2. To change rates manually whether in manual
or in VR mode, simply touch the Up/Down ar-
row 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.
3. Engage the hydraulic flow by pushing For-
ward on the tractor remote hydraulic lever.
The remote lever must be Locked Open in this
position to provide constant flow to the drive
motor.
• John Deere tractors with Sound-Gard ®
body: Use lever lock clip to lock lever for-
ward. See your tractor dealer for lock pur-
chase and installation.
• John Deere 7000 Series tractors: Rotate
valve detent selector to motor position to lock
lever in forward position.
• John Deere 8000 Series tractors: Set timer
to continuous. Push lever forward until detent
clicks.
• Case-IH Magnum tractors: Lock lever in de-
tent position. You may need to turn up detent
pressure to its maximum setting. Do not tie
hydraulic lever past detent position with a
strap. See you tractor dealer for details.
Figure 29
Controller Console
• Other tractors: Lock lever forward in detent
position. You may need to turn detent pres-
sure to maximum or use a mechanical detent
holder to hold lever forward. See your tractor
dealer for proper means of providing constant
flow.
4. Press ENGAGE key to activate drive. Green
light above ENGAGE key will illuminate.
NOTE: If you do not move within 10 seconds, the
automatic disengagement feature will disengage
the drive. To begin planting again, you must press
the ENGAGE key.
5. The Console display shows two numbers
while operating: "Set" rate is the rate you tell
the system to plant, and the "Out" rate is the
calculated rate based on the actual rotations
of the drive. The "Out" reading is monitoring
the drive system; it isn’t monitoring popula-
tion. It verifies that the drive system is func-
tioning properly.
NOTE: The "Out" readings will normally fluctuate
within 5% of the "Set" rates. This fluctuation is ev-
idence 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 bat-
tery or via unswitched power port, make sure
to power Console off when tractor is shut
down in order to prevent tractor battery drain.