Seed Hawk GRANULAR AND LIQUID TANKS 2008 - Manual (Page 26)

OPERATION
SEEDHAWK
PRESSURIZED
METERING SYSTEM
FAN(S)
Some models are configured
with a single fan while others
may be configured with dual
fans. Fans are driven by
hydraulic motors with speed
controlled by the tractor
hydraulic flow control system.
Fan speed is indicated on the
monitor panel in the cab.
Set fan speed to effectively
transport the seed. A reminder
that higher fan speeds will
increase seed bounce and
possibly damage the seed.
Higher fan speeds also require
more power input from the
tractor.
Typical fan speed ranges for
various product types are listed
below for reference:
PRODUCT FAN SPEED
(rev/min)
Oilseeds 2000 - 3000
Cereals 2500 - 4000
Pulse crops 3500 - 4200
Fertilizer (granular) 3500 - 4200
NOTE: Fan speed is dependent on implement size and tractor
hydraulic output.