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16 unigreen
5 BLOWER GROUP
All the atomisers have a high speed fan rotor. You must take great care
and beware of the effects that this can provoke: such as the aspiration
and projection of foreign bodies which, although of a small size, can be
very dangerous especially for the eyes and face.
5.1 AXIAL BLOWER GROUP WITH PULLEY
The atomisers that have a drive transmission between the pump and fan with
pulleys are equipped with a neutral gear; the multiplied ratio is 1:4.26, the
rotation speed of the fan is 2,300 RPM.
You should periodically check the tension of the belts; if they become too slack
you should tension them again.
To do this for the models equipped with a specific system belt tensioning sys-
tem, use the screw indicated to the side ( FIG. 17).
For all the other models use an adjustable wrench on the nut indicated in the
figure to the side to move the base and tension the belts (FIG. 18)
5.2 AXIAL BLOWER GROUP WITH MULTIPLIER
The transmission of the drive from the pump to the fan is done through a
multiplier with one or two neutral gears.
Normally the rotation speed of the fan is 1950 RPM in first gear and 2500 RPM
in second in the multiplier with 2 gear ratios (multiplied ratios 1:3.6 - 1:4.6) and
2,500 RPM in the multiplier with one gear ratio (1:4.6)with the power-takeoff
running at 540 RPM.
You can change from one gear to the next with the lever on the multiplier, made
accessible through the opening on the side in the rear left part of the machine or
at a distance on the right side. The lever has 2 or 3 positions depending on the
number of gears and the central position is neutral (to use only the pump
without the fan).
There are two models of blower groups with rear suction:
- Axial blower (FIG19A): used for treatments similar to traditional multiplier
blower groups, with delivery of the air in a circular crown.
- Tangential blower: for use in small and medium espalier rows of vines. There
are pulley drive versions or multiplier versions, adjustable jets can be mounted
to spray the vegetation at various heights.
WARNING: the gear change lever must only be used with the power-takeoff
disengaged and the fan stopped. If it is difficult to engage, turn the cardan shaft
slightly by hand to find the right position of the lever (make sure the tractor is
turned off).
There are two deflectors (one on the right and one on the left) in the bottom part
of the delivery outlet of the fan groups which define the direction of the airflow;
lower if the deflector is lowered and higher if the deflector is raised. For the
system to work properly it should be set up as follows: the left deflector
(looking at the atomiser from behind) raised and the right one lowered in
machines with a multiplier, vice versa in those with a pulley (as the fan turns in
the opposite direction).
For the maintenance of the multiplier (see point 8.2.3 Multiplier Lubrication).
FIG. 19B
FIG. 17
FIG. 18
Speed change
lever
Belt tensioning
system
Belt tensioning
system
FIG. 19A