Great Plains 2525P Operator Manual - Manual (Page 99)

4/23/2010 118-915M
97 Veris Drive Operating Instructions
f. Check speed shown on cab console against other speedometer - tractor, planter monitor. If
drive speed is significantly higher, recalibrate speed on drive.
10. Drive plants significantly higher than desired rate:
a. Recheck calibration number and rerun calibration procedure if necessary.
b. Ensure that you have installed the correct seed meter.
c. Check sprocket combinations; see Assembly and Parts Manuals for the planter you are oper-
ating (30P and 40P models).
d. Check speed shown on cab console against other speedometer - tractor, planter monitor. If
drive speed is significantly higher, recalibrate speed on drive.
11. Drive continues to rotate after tractor has stopped:
a. Contamination or wear in proportional valve (PN 19798). Remove and inspect. Blow out with
compressed air. Check o-rings and reinstall. Replace if necessary.
12. Fluid weeping from motor shaft seal:
a. Excessive back pressure in return hose. Check quick coupler connection. Use motor control
port for return if available.
Calibration Troubleshooting:
13. If the time to run for calibration is less than 4 seconds, the cab console will display TIME TOO LOW.
Pressing the FUNCTION key will bring up the ENTER TARGET AMOUNT screen. The target
should be raised to increase the calibration time. If the time is greater than 255 seconds, the cab
console will display TIME TOO HIGH. Pressing the FUNCTION key will bring up the ENTER TAR-
GET AMOUNT screen. The target should be lowered to decrease the calibration time.
14. While rate calibration is running, one of four error messages may be displayed:
Message Cause Solution
COMM TIMEOUT Power to or communi-
cation with the external
controller was inter-
rupted during calibra-
tion. Check power and com-
munication connections
from the cab console to
the external controller
and rerun calibration.
TIME OVER LIMIT The external controller
ran too long in calibra-
tion. Rerun calibration. If the
same message
appears, call technical
support.
USER TERMINATED The engage key was
pressed during calibra-
tion. Rerun calibration.
CALIBRATE ERROR The drive did not turn
when calibration began. Check encoder cable
and connection, sole-
noid cable and connec-
tion, and hydraulic lever
position.
Pressing FUNCTION will exit rate calibration from these error screens.