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7. DISTRIBUTION TYPE
IMPORTANT:
MAKE SURE TO ROTATE THE
TURBINE AT THE RATED SPEED BEFORE THE
TRANSMISSION WHEEL STARTS TO TURN. WHEN
SOWING HAS FINISHED, DO NOT LOWER THE
TURBINE ROTATION SPEED UNTIL THE TRANS-
MISSION WHEEL HAS BEEN DISCONNECTED.
7.1
WITH MECHANICALLY DRIVEN TURBINE
In order to guarantee seed supply to the coulters, the tur-
bine must rotate between 4200 and 4500 rpm. This requires
bringing the tractor power take-off to a speed of 1000 rpm.
At lower speeds, some seeds may remain in the pipes and
clog them.
IF THE SEED DRILL IS TRAILED ON THE GROUND
WITH THE AIR TURBINE STOPPED, THE SEED
LEAVING THE DISPENSER WILL CLOG THE COL-
LECTOR PIPE THAT FEEDS THE VENTURI INJEC-
TOR. IF THIS HAPPENS, REMOVE THE COLLEC-
TOR AND EMPTY IT BEFORE RESTARTING THE
SEED DRILL.
7.2
WITH HYDRAULICALLY DRIVEN TURBINE
MACHINE
TYPE
HYDRAULIC MOTOR
Absorption capacity (cm³/rev.)
Speed (rpm)
600
8
4500
680
8
4500
700
8
4500
770
8
4500
MACHINE
TYPE
OIL SUPPLY
Min. output
pressure (bar)
Max. return
pressure (bar)
Oil flow rate
(L/min)
600
160
1.5
33-41
680
160
1.5
33-41
700
160
1.5
33-41
770
160
1.5
33-41
CONNECTION
Connect the quick-connect fitting of the small turbine hose
to a pressure outlet on the tractor. Connect the 1/2" hose
with the large quick-connect fitting to a free return.
THE MAXIMUM RETURN PRESSURE IS 1.5 BAR.
IF THIS PRESSURE IS EXCEEDED, THE MOTOR
MAY FAIL.
Fig. 7.1
Fig. 7.1
ADJUSTMENT
The turbine's turning speed is controlled by adjusting the
tractor's hydraulic output.
In order to guarantee seed supply (and fertilizer, depending
on the model) to the coulters, the turbine must rotate be-
tween 4200 and 4500 rpm. Depending on the type of prod-
uct and the quantities to be dispensed, material may accu-
mulate in the pneumatic conveying pipes and clog them.
Perform a check after seeding 1 hectare.
IF THE OIL GETS TOO HOT BECAUSE THE FLOW
RATE PUMPED BY THE TRACTOR IS TOO HIGH
OR THE OIL RESERVE IS TOO SMALL, IT WILL BE
NECESSARY TO MOUNT AN ADDITIONAL OIL
TANK OR A COOLING SYSTEM.
IF THE FLOW RATE OF THE TRACTOR'S HYDRAU-
LIC PUMP IS NOT SUFFICIENT TO FEED THE
TURBINE MOTOR OR IT CANNOT ALSO DRIVE
ANOTHER NECESSARY COMPONENT, IT WILL
BE NECESSARY TO INSTALL AUXILIARY EQUIP-
MENT WITH A PUMP DRIVEN BY THE POWER
TAKE-OFF AND AN OIL TANK WITH A COOLER.
CONSULT THE SEED DRILL'S OPERATION WITH
YOUR DISTRIBUTOR.
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