Great Plains 800EW Operator Manual - Manual (Page 28)

26 175-248A, -249A, -250A, -251A
175-253M 02/24/2010
Operation
The fertilizer metering system normally operates when-
ever the drill is in forward motion and lowered to field
position.
Fertilizer rate is set with the adjuster knob at the center
rear of the fertilizer box (below the Small Seeds box if
installed).
Fertilizer rate adjustment details, calibration procedure,
and rate charts, are found in the Model 800 Seed Rate
Manual (175-057B).
Fertilizer rate is independent of Drive Type selected at
the gearbox (the Accessory Shaft is driven from the input
side of the gearbox).
If fertilizer is not being applied, Great Plains recom-
mends emptying and cleaning out the fertilizer box. You
can also disable the box by removing a chain in the
Accessory drive system - this may also disable the main
box Agitator or Small Seeds, if installed.
You can temporarily suspend fertilizer application by set-
ting the rate adjuster to zero. This is not recommended
for more than brief operations.
IMPORTANT !
Always clean out the fertilizer box at completion of
application. Most fertilizers are corrosive, and only the
meter portion of the fertilizer option is fabricated from
stainless steel. The upper fertilizer box can be dam-
aged if fertilizer is allow to stand for extended periods
of time.