Operator`s manual

Operation
Simplicity Australia Page 3.18 Version 1.0
Use of Air Restrictors
The use of air restrictors may be necessary while double or triple
shooting when rates vary greatly. eg. 4kg/ha of canola in one
shoot and 100 kg/ha of fertiliser in the second shoot.
Naturally, increased air volume is required to move higher rates
of heavier product. By setting the blower speed to move the
higher rate of the heavier product, the air volume will be way in
excess of the volume required to move the lower rate of the
lighter product.
The air flow will naturally follow the line with the least resistance.
This will tend to take air from the higher rate heavy material line
and force more air through the lower rate lighter material line.
This can cause force feeding and subsequent seed bounce in the
lighter line and possible blocking of the heavier product line.
Remove a secondary head cap on the heavier product line and
operate the seeder at the required ground speed. Set the blower
speed to provide the air volume necessary to lift the heavier
product to the recommended 2–4 metres above the secondary
head. At this setting the lighter product will most likely be lifted
much higher above the head.
In this case air restrictors should be
fitted in the line of the lighter material
being sown at the lower rate. The
restrictors, fitted in the male side of the
camlock breakaways as shown, simply
restrict the air flow, stopping the escape
of air and keep the system in proper
balance.
With the blower speed originally set to provide the volume of air
to lift the heavy product 2-4 metres above the secondary head at
operating speed a significant change will be noted when the
restrictors are fitted.
The heavy material will now lift higher as the air has been
restricted in the lighter lines and been sent to the heavy lines.
Blower speed may now be able to be reduced.
50 mm restrictors are supplied
standard with the Air Seeder.
Restrictors of different sizes are
available from your Simplicity
Australia Dealer. Experimenting with
different size restrictors may be
required to balance the air flow in
some circumstances.
Air will always take
the line of least
resistance