Vacuum Pump; Preparing For Seeding - GASPARDO SARA Empleo Y Mantenimiento

ENGLISH

3.17 VACUUM PUMP

The aspirator (Fig. 41) creates a vacuum inside the distributors, so
that the seeds are aspirated onto the holes in the plate. The tensioning
and good condition of the belt are therefore of vital importance to
ensure the good for the good operation of the aspirator and, hence,
the success of the sowing. The belt is correctly tensioned when it
does not yield under the pressure of a hand.
Make sure that the universal joint is disconnected from the
power take-off before carrying out the following operations:
Belt checking procedure:
- Remove the protective housing
- Loosen the 4 screws (1 Fig. 41)
- Loosen the nut (2 Fig. 41)
- If worn, replace the belt.
- Tension the belt by tightening the screws (3 Fig. 41).
- Tighten the bolts loosened before and close the casing.
Vacuometer
The vacuometer (Fig. 41) a the vacuum measuring device. The
one supplied shows aspiration values ranging from -0 to -100
mbar. The average approximate aspiration values for large seeds
are: 60 to -70 mbar for small seeds: -40 to -50 mbar.
Comply with the number of rpm recommended for the power
take-off.

3.18 PREPARING FOR SEEDING

The planting unit must be correctly adjusted in the field.
DANGER: Carefully follow the instructions below and perform
the operations in the order they are listed:
- From the driverís seat of the tractor, raise the seeder;
- Operate the power take-off at 540 rpm;
- Using the gear lever, put the tractor engine into neutral;
- Brake the tractor and if necessary, secure it with wooden blocks
sized according to the size of the wheels;
- Ensure that no-one can approach the tractor driver's seat;
- Check that all the drive shafts are properly engaged.
- Carefully check moving parts, dri-ving parts and seed distribution.
- Load the seed hoppers: remember that weights of more than 30
kg must either be lifted by more than one operator or the above-
mentioned mechanical lifter must be used following the
instructions included in the relative use and maintenance manual.
All operations must be carried out by trained staff wearing suitable
protection (overalls, gloves, boots, masks etc) in a clean, dust-
free environment. When loading the hoppers with seed, and the
tanks with fertilizer or insecticide, make sure that no foreign bodies
(string, paper bags, etc) get into the tanks.
- Manually turn the seeder gear drive wheel in the direction in
which the machine is moving;
- Adjust the selector and control through the transparent grate
(Fig. 42) that the plate is only holding one seed per hole;
- From the "seed chart" on page 46 the number of seeds required
can be determined in advance.
Remove and overturn the supporting feet (Fig. 43).
- Proceed with seeding: after a few metres check to ensure that
the distributors are sowing one seed at a time.
At the end of seeding, discharge the remaining seeds through
the distributor door (Fig. 44).
54
WARNING
WARNING
CAUTION
USE AND MAINTENANCE
17
NR -
2
1
fig. 41
fig. 43
g
3
19
NR -
cod. G19502521
-50
-60 -40
Mbar
-70 -30
-80 -20
-90 -10
-100
0
fig. 42
fig. 44