Seed Hawk AIRCART 2012 - Manual (Page 37)

Seed Hawk
®
Manual Aircart Page 32
4.9 FAN(S)
Connect the pair of 3/4” hydraulic lines (Fan one has a blue band, fan two has a
red band) to supply the hydraulically driven fan motor. This tractor lever is locked
in full pressure position while seeding.
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 system. Fan speed is indicated on the monitor panel in the
cab.
Set fan speed to effectively transport the seed. 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.
NOTE
4.10 CHECKING AIR AND PRODUCT FLOW
: If Aircart is equipped with two fans, if one fan is not being used, it
must be ran at low rpm due to pressurization of meters.
The test procedure outlined below serves as a guideline for ensuring proper fan
speed for effective delivery of product:
1. Remove hose(s) from an outside opener and temporarily attach to the
frame of the seeder with the hose looping no more than 12 in (300 mm)
below the frame.
2. Begin seeding at normal field speed and observe distance product
discharges from hose(s) attached to the frame.
NOTE
3. Adjust fan speed, if necessary, to ensure optimum air flow for product
discharge.
: All product should discharge within a range of 12 - 24 in (300 - 600
mm).