Great Plains CTA4000 Operator Manual - Manual (Page 25)

Operating Instructions 21
08/03/2010 160-269M-A
Operating Instructions
This section covers general operating procedures. It
assumes that setup items have been completed for both
cart and implement.
Experience, machine familiarity and the following infor-
mation will lead to efficient operation and good working
habits. Always operate farm machinery with safety in
mind.
General Description
Implement hydraulic functions (except markers) are
routed through a valve block mounted on the left wing.
Once set up, routine implement operations (switching
between folding and lift) require setting valve handles on
this block.
Planting Operation
Via an adjustable implement lift switch on the implement,
the CTA4000 controls the meter drive clutch on the air
cart, turning it on and off as the implement is lowered
and raised.
Seed is delivered to the row units by air, powered by the
fan on the air cart. Seed rate is determined by air cart
setup, and the cart meter rate self-adjusts for changes in
ground speed. Seeding stops when motion stops or the
implement is raised.
The metered seed is carried by air through the hoses to
the distribution towers on the implement. These towers
then divide the air and seed into individual rows.
Seeding depth and furrow coverage are controlled by
implement down pressure and row unit setup.
Pre-Start Checklist
❑ Lubricate the implement as indicated under Lubrica-
tion, “Maintenance and Lubrication” on page 49.
❑ Check the tires for proper inflation according to “Tire
Inflation Chart” on page 55.
❑ Check for worn or damaged parts and repair or
replace before going to the field.
❑ Check all nuts, bolts and screws. Tighten bolts as
specified on “Torque Values Chart” on page 56
❑ Check implement lift switch on implement
❑ Complete all pre-start checklist items on the air cart.
Figure 21
Valve Block Location
26377