Blower Drive - Gaspardo ALITALIA 300 Use And Maintenance

ENGLISH

4.5 BLOWER DRIVE

The blower is one of the main parts of the machine and enables
optimised seed distribution.
After the fi rst distribution phase, during which a seed metering unit
selects the amount of seeds to be spread, the second phase is
extremely important for conveying the seeds to the furrowing parts.
A fl ow of air generated by the blower conveys the seeds.
The air capacity can and must be changed according to the specifi c
weight of the seeds by rotating the butterfl y valve supplied (Fig. 36):
A) normal seeds;
Z) fi ne seeds.
fi g. 36
A- quick-coupling pressu-
re side;
B- three-way regulator;
C- manometer;
D- engine;
E- safety valve;
F- quick-coupling sca-
venge side;
G- cooler (optional).
Tractor side
fi g. 37
64 - EN
A
A
D
E
C
B
A
F
USE AND MAINTENANCE
OLEO-DYNAMIC BLOWER DRIVE
Safety
The equipment is suitable only for the use indicated. Any use
other than that described in these instructions can cause
damage to the machine and constitute a serious danger to
the user.
Regular operation depends on the correct use and adequate
maintenance of the equipment. It is advisable therefore to observe
scrupulously what is described in order to prevent any inconve-
niences that could prejudicate proper operation and duration. It is
just as important to keep to what is described in this booklet since
the Manufacturer declines all responsibility due to negligence
and non-observance of these rules.
At any rate the Manufacturer is available to assure immediate and
accurate technical assistance and all that may be necessary for
the improved operation and better performance of the equipment.
The oleo-dynamic blower drive may be used, maintained and repai-
red only by personnel with complete knowledge of the apparatus in
question and of the relative dangers. Check the correct connection
of the quick-couplings; failure to do so could result in damage to
the system. Disconnect the oleo-dynamic unions only after having
fi rst depressurized them.
High-pressure oil leaks can cause serious skin injuries with the
risk of infection. In such cases seek immediate medical attention.
It follows that oleo-dynamic components should not under any
circumstances be installed in the tractor cabin.
All the component parts of the pressurised system should be
carefully installed in order to avoid damage during the use of the
machinery.
Characteristics of the tractor necessary for installation:
Z
- A suffi cient number of distributors on the tractor: the supply
to the blower drive has maximum priority.
- Tractor oil fl ow rate: the oil required for engaging the blower is
approx. 32 litres/minute with a max. pressure of 150 bar.
Z
- For correct blower operation and suffi cient oil cooling we recom-
mend supplying the circuit with an amount of oil equal to 55÷60
litres.
- Oil cooling: if the tractor is not equipped with a large enough
cooling system, it will be necessary:
a) to install one;
b) increase the oil reserve by means of a supplementary tank
(ratio: 1:2 between the pump delivery/minute and the oil reserve).
- The return circuit must be low pressure (max 10 bar).
- Do not connect the return circuit to the auxiliary distributor.
- Tractors: check the tractor according to the above observations.
If necessary have any modifi cations carried out by the tractor
dealer.
- Oil supply: follow the data of the table in Fig 37. The hydraulic
G
pipes must be connected correctly to the tractor distributors
following the instructions on each pipe.

ATTENTION
cod. G19503392