Great Plains CP1000 Assembly Instructions - Manual (Page 14)

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Section 2 Operating Instructions
CPH and CP1000 Coulter Command System 148-258M-B 9/21/05
Great Plains Mfg., Inc.
Operation of Electronic Controls
1. Connect the power cord to a good uninterrupted 12
volt power source on the tractor. Connecting directly
to the battery is recommended. Plug the cord into
the lead with the 2-Pin connector on the back of the
control box. The polarity of the power supply is very
important to prevent circuit damage. The white wire
of the power cord must be connected to the "+" pos-
itive battery terminal and the black wire to the "-"
negative battery terminal.
2. With the remote tractor hydraulic lever locked in po-
sition to supply oil to the "P" port of the hydraulic
control valve, turn the power switch on.
a. For manual tongue hydraulic cylinder operation,
simply move UP-DOWN switch. Moving the
switch to the UP position extends the tongue
cylinder, and moving the switch to the DOWN
position retracts the tongue cylinder. If UP re-
tracts the cylinder, then your remote hydraulic
lever is not supplying oil to the "P" port of the hy-
draulic control valve, or the wires going to the
solenoids A and B are reversed. By moving the
UP-DOWN switch, the AUTO-MANUAL switch
automatically switches to the MANUAL mode. If
you are in the AUTO mode and you want to
manually hold the tongue hydraulic cylinder in
the position set by the automatic controls, just
switch the AUTO-MANUAL switch to MANUAL.
b. For automatic coulter depth control, simply
switch the AUTO-MANUAL switch to AUTO and
dial in the desired coulter depth you wish to
maintain with the coulter depth control knob.
!
WARNING!
Make sure all people, animals, and objects are clear of the
coulter tool bar before switching the tongue hydraulics
switch to the "auto" mode. Sudden automatic lowering of the
coulter tool bar could cause serious personal injury or death.
Turning the coulter depth switch clockwise makes
the coulters run shallower. Turning the coulter depth
switch counterclockwise makes the coulters run
deeper. If the hitch is not moving or is on a hard sur-
face, turning the coulter depth switch may not cause
the tongue cylinder to retract to the desired position.
The coulters may not penetrate to the desired depth
until the hitch is moving. The coulter depth setting
can always be changed "on-the-go" if you desire.
With the AUTO-MANUAL switch in the AUTO mode,
the coulters should maintain a constant depth re-
gardless of terrain, soil type or speed. When lifting
and turning in the field, the tongue cylinder will re-
main in its last automatically set mid stroke position.
When the machine is lowered, the coulters will auto-
matically return to their preset depth.
Field Adjustments
Lift Switch
The switch at the transport lift cylinder of the Center Piv-
ot Hitch determines the point in the lift cycle at which the
automatic feature of the Coulter Command will be inter-
rupted and the depth sensing gauge wheel will be lifted
off the ground for turning around. Since the Center Pivot
Hitch transport tires can be lowered during operation to
provide flotation for the drill in soft soil conditions, coulter
command should not be interrupted and the depth sens-
ing gauge wheel should not be lifted until after the
transport tires are lowered to the point where they are no
longer used for system flotation. This is usually the point
in the lift cycle when the drill openers are just being lifted
out of the ground.
A 3/8" x 3/8" square ramp attached to a sliding push rod
on the right transport lift cylinder activates a plunger
switch which causes the automatic feature of the Coulter
Command to be interrupted and the depth sensing
gauge wheel to be lifted off the ground for turning the
Center Pivot Hitch around in the field.