Seed Hawk AIRCART 2014 - Manual (Page 21)

SEED HAWK ® 2014 AIRCART OPERATOR’S MANUAL SEED HAWK ® 2014 AIRCART OPERATOR’S MANUAL 34
4.6 Metering Roller
The metering roller is provided in each compartment. The roller is divided
into replaceable sections which can be replaced if damage occurs. If there is a
damaged section the product gate above the roller can be closed to facilitate
changing without emptying the tank. The meter roller can then be removed and
repaired, quickly, without product spillage.
Some meters have two colored roller sections. The red sections have less dis-
placement than the black sections. When a machine’s air distribution system has
tower heads with different outlets the heads with the lower number of outlets
are fed by red roller sections to ensure even distribution.
There are four different roller section types: canola, helical, straight fluted
(bean) and chick pea. However, the canola roller is only available on hydraulic
drive equipped aircart models. The helical roller section is designed to accom-
modate the majority of seeding products including small oil seeds, cereals, and
granular fertilizer. The straight fluted (bean) roller is used for small pulses and
granular fertilizer. The chick pea roller should only be used for very large pulses
such as garbanzo beans.
4.6.1 Meter Roller Types
NOTE: Ensure roller gate
is reopened to commence
seeding.
35
4.6.2 Meter Roller Selection Guide
4.7 Fans
Connect the pair of ¾” 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.
Fans are driven by hydraulic motors with speed controlled by the tractor hy-
draulic 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 refer-
ence.
Product Fan Speed (rpm)
Oilseeds 2000-3000
Cereals 2500-4000
Pulse Crops 3500-4200
Fertilizer (granular) 3500-4200
Tube
(Canola)
Helical Bean Chick Pea
Fertilizer
Barley
Canola
Lentils
Field Peas
Large Beans
Large Peas
Wheat
Inoculants
NOTE: Fan Speed is depen-
dent on implement size and
tractor hydraulic output.
NOTE: If Aircart is equipped
with two fans, if one fan is
not being used, it must be ran
at low rpm due to pressur-
ization of meters.