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Blower
Installation of TRL blower.
Be certain that the motor runs in the correct direction,
so that the rotor follows the direction indicated with ar-
row on the blower housing. Failure to do this will drasti-
cally reduce capacity.
Rotary valves
Installation of rotary valves.
Check that the rotary valve is placed in the right way.
A small air flap is mounted in the air supply side. The
air flap directs the airflow downwards and away from
the rotor, so that the material will easily fall down into
the airstream. If the rotary valve is placed in the op-
posite direction, the material will not fall down into the
airstream.
Also ensure that the rotor runs in the correct direction.
The rotor shall rotate so that the grain falls into the air
entry side of the rotary valve. If the rotary valve is seen
as illustrated below, the rotor shall run in the direction
of the watch. If it does not run in this direction, the ro-
tary direction can be changed by changing the electric
supply phases (see chapter 1.1 about the blower).
It is recommended to install a wide open hopper above
the rotary valve inlet. The inlet of the rotary valve shall
be considerably larger than the feeding spout. An
overpressure of air in the chambers of the rotary valve
is constantly built-up in the chambers returning from
the pressure side. This air shall slip away, which is not
possible when the feeding spout is clamped directly on
to the rotary valve inlet. The consequence hereof will
often be inferior filling of the chambers and plugging of
the pipes above the rotary valve.
To avoid irregular feeding, which e.g. might be the
2
If the motor runs in the wrong direction, the direction
can be changed by changing two electric phases. Any
phases can be changed, but the earth conductor must
not be moved.
NOTE: Shall only be carried out by authorised staff.
case after a dump weigher a shutter can be mounted
right above the rotary valve. The shutter is adjusted
to obtain an even and constant flow of material to the
rotary valve.
The rotary valve will normally have a higher capacity
than the blower, - the input capacity of material must
be adjusted with a shutter.
RV/RF/CAD 40
RV/RF/CAD 30
Shutter for adjustting
of grain flow
Right
NOTE: If the rotary valve is dismantled, make sure that
it is assembled correctly again! - The top part/rotary
valve and bottom part/outlet can be assembled inver-
sely!
Air flap
RV/RF/CAD 20
Hopper or large inlet with considerable
larger diameter then the grain outlet
Shutter
Wrong
Flow
direktion
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