
PL5500 Planter
Operation
Great Plains | 411-633M | 2021/10/21
25
Air System Operation
Equipment Damage Hazard
Use the special blank disk, and close the seed
inlet shutter when a row is shut off. Running a
seed disk with no seed, or with an open empty
inlet, unbalances the air system. Doing either
at a sensor row causes the gauge to report
incorrectly.
shows air direction
The hydraulic fan (1) supplies air for meter operation.
Fan rpm is operator
-
adjusted (page 28), normally
with the tractor remote hydraulic flow control.
Dry fertilizer fan operation - a manually
-
adjusted
butterfly valve (2) is provided at the fan outlet. See
page 30 for butterfly valve adjustment.
The center planter frame (3) delivers fan air.
Separate tubes (4) route air to each row unit.
Fan speed is controlled by the tractor circuit,
not the seed monitoring system or in-cab
console.
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