Akron EXG 400 X, User Manual

Page: 35 / 106

35
EXG 400 X GRAIN BAG UNLOADER
SET UP FOR
EXTRACTION
3)
Activate the cardan shaft, slowly at the
beginning. This way, the cereal starts to flow
upwards. Gradually increase the speed until it
reaches 540 rpm on the cardan shaft.
4)
Make sure that the tractor is not geared and
that the hydraulic system is ready to operate.
5)
With the cardan shaft already turning,
hydraulically activate the traction roll in the
direction given by the arrow shown in the figure.
Using the flow control valve, gradually increase
the speed until a reasonable rate is reached
(remember that by this time the machine has
started moving, tugging the tractor behind it).
The idea is to work at a speed high enough to
reach a good efficiency, but not excessive, since
this would result in the cereal getting trapped
inside the bag as it is wound on the roll. The
following figure shows an ideal situation, where
the cereal level stays invariable inside the bag.
WARNING: Do not stand in the machine
pathway while this moves forward during
operation. Do not open or remove the
covers while the machine is operating.
6)
Increase the cardan shaft speed up to 540
rpm. To prevent the grain from getting crushed
and the augers from wearing out prematurely, do
not work at speeds higher than this.
7)
Make sure once again that the machine’s
cutting blade is still opening the bag following
the original cut. If it was necessary, make a new
cut, always transversally (see item 5 within title
5-f. “Final adjustments on the machine”).
6-c. Operation Parameters
1) As the extraction is carried out, the
machine’s feed speed can be adjusted using the
flow control valve. This valve operates directly
on the roll’s winding speed, and consequently
varies the speed with which both the tractor and
the extractor move. Every time the speed has to
be adjusted, it must always be done gradually,
avoiding sudden variations that could overload
the hydraulic system.
2) During the machine’s normal operation, a
small “mound” or pile of cereal is formed under
the roll. The upper part of it, in the centre, must
never be above the roll’s height. If this
happened, some grain would get trapped inside
the bag as it is wound onto the roll.This situation
is corrected by opening or closing the flow
control valve, thus increasing or reducing the
roll’s speed.
3) The roll’s height (h) over the ground must be
enough to avoid the accumulation of an
excessively large “mound” under the roll.
Otherwise, the bag may probably be torn by the
transport support, in the rear part of the
machine.
Tractor´s
side
Roll
Upper side of the
grain bag
Horizontal auger
Grain
level
Figure 6.6 – Cereal inside the grain bag
Tractor´s
side
Roll
Upper side of the
grain bag
h
Grain
lever
Mound
Figure 6.7 - Wrong Height