Fan speeds
The required fan speed depends on the
fertilizer
quantity.
Travel speed, weight and shape of
fertilizer
in form of granules or powder and other fac-
tors also have an influence on the required air
quantity.
For uniform transverse distribution you should
always aim at the highest possible speed (higher
than approx. 4500 rpm), whereby the
fertilizer
should not be blown out of the seed bed.
The
correct speed must always be determined
by
field tests or during a test placement.
The speed of 4500 rpm must only be fallen short
of if a measurement of the transverse distribution
revealed correct distribution at a lower speed.
For measuring the transverse distribution you
should contact your HORSCH Service Department.
Retightening the fan flange
The clamping taper fixates the fan wheel and
additionally clamps on the drive shaft.
The clamping taper on the fan drive may come
loose. The impeller can thus move along the
drive shaft and damage the fan.
¾
After approx. 50 hours retighten the clamping
taper on the fan flange and check it annually.
Clamping taper
Please note:
¾
When tightening the screws, especially with
a new assembly, the fan wheel will move
towards the protective grill.
¾
A loose
flange must therefore be aligned
closer to the hydraulic motor.
¾
The clamping faces must be free of oil and
grease.
¾
The clamping screws must be tightened uni-
formly and in several steps. Tightening onto
the taper should be supported by light ham-
mer blows on the flange (plastic hammer or
hammer shaft).
¾
The inch screws in the No. 10 - 24 4.6 ver-
sion must thereby only be tightened with
max.
5 Ft-lbs
, or 60 In-lbs.
¾
After tightening check the impeller for free and
even running.
¾
Check the fan impeller and the protective grid
regularly for dirt deposits and clean.
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