Structure and function
5.9.1
Connecting the blower fan to the tractor hydraulics
The blower fan speed alters until the hydraulic fluid has reached its
working temperature.
On initial operation correct the blower fan speed up to attainment of
the working temperature.
If the blower fan is put back into operation after a long stoppage
period, the preset blower fan speed is not attained until the hydrau-
lic fluid has heated up to working temperature.
The required blower fan speed can be found in the table (Fig. 71,
unterhalb). The blower fan speed depends on the machine working
width and on the seed.
The blower fan speed can be regulated:
•
at the tractor flow control valve
or (if not present)
•
via the pressure relief valve (Fig. 70/3) of the hydraulic motor.
The blower fan speed (rpm) is dependent on
•
the working width of the machine (1).
•
the seed
ο
fine seeds (2),
e.g. rape or grass seed
ο
grain and
pulses (3).
Example:
Cirrus 4002
•
Working width 4.0 m (1)
•
Cereal seed (3)
Required blower fan speed: 3800 rpm
Fig. 71
76
Cirrus BAH0049-1 09.14
