NOTE
¾
Fan wing and protective grid must be regularly
checked for dirt deposits and cleaned.
Deposits on the protective grid restrict the air
flow and thus lead to blockage in the seed
pipes.
Deposits on the fan impeller cause unbal-
ance. The bearing will thereby be overloaded
and can be damaged.
Direct drive
Fan with direct drive
The fan speed is adjusted via the oil quantity on
the flow control valve in the tractor.
The hydraulic pump must deliver sufficient oil
to prevent the fan speed from dropping, even
when the tractor speed drops or other hydraulic
functions are activated.
Connecting the hydraulics
CAUTION
Damage on the fan motor -
gear motor
¾
Connect the return line to the pressureless
return of the tractor!
¾
Note the return flow pressure of max. 5 bar
in the leak oil line!
Gear motor connection
Checks and maintenance
¾
Let the fan only run while the protective grille
is mounted:
Fan with protective grille
¾
Clean the protective grille at regular intervals
to prevent a restriction in air flow and result
-
ing blockage.
¾
Clean any dirt or deposits from the fan blades
to prevent unbalance and damage to impeller
and bearing.
¾
Retighten the clamping taper on the fan shaft
(see chapter
Retightening the fan flange
).
42
