Great Plains ADC2220 Operator Manual - Manual (Page 23)

2012-10-17 Table of Contents Index 167-073M
Great Plains Manufacturing, Inc. Table of Contents Index 19
Operating Instructions
This section covers general operating procedures. It
assumes that setup items have been completed for both
air cart and implement.
Experience, machine familiarity and the following
information will lead to efficient operation and good
working habits. Always operate farm machinery with
safety in mind.
General Description
Seed metering is powered by a cart tire and driven at a
rate proportional to distance traveled. Each seed bin is
self-contained and has its own metering device. The
seed bins are sealed and held at the same pressure as
the meter boxes so metering is controlled
mechanically–not by air-flow fluctuations. 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.
The metering devices are driven through an
electromagnetic clutch. The clutch only engages if the
implement is lowered, operating an adjustable lift switch.
Seed metering is shut off automatically when the drill is
lifted for headland turns.
Pre-Start Checklist
❑ Lubricate the cart as indicated under Lubrication,
“Maintenance and Lubrication” on page 95.
❑ Check the tires for proper inflation according to “Tire
Inflation Chart” on page 107.
❑ Check the chains for proper tension and alignment
as shown under Drive System Adjustments,
“Adjustments” on page 65.
❑ 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 113
❑ Check height switch on implement.