24
TYPES OF DISTRIBUTION
7- TYPES OF DISTRIBUTION
IMPORTANT:
BEFORE THE WHEEL CONTRO-
LLING THE DISTRIBUTOR’S TRANSMISSION
STARTS TURNING, PLEASE ENSURE THAT THE
FAN’S TURNING SPEED IS BETWEEN 4200 AND
4500. WHEN RAISING THE MACHINE, NEVER DE-
CREASE THE FAN’S TURNING SPEED UNTIL THE
WHEEL IS DETACHED FROM THE GROUND.
7.1 SEED DISTRIBUTION BY MECHA-
NICAL FAN
To ensure that seeds are supplied to the tine coulters’ sowing
shoes, it is essential that the fan speed is between 4200 and
4500 rpm. For this purpose, the PTO shaft must be plugged
into the 1000 rpm vent. If the turning speed is lower then
some seeds are likely to remain in the seed hoses.
PLEASE NOTE THAT IF YOU WORK WITH THE
MACHINE WHILE THE FAN IS OFF, SEEDS WILL
BLOCK THE COLLECTING PIPE OF THE VENTURI
INJECTOR SLUICE. IN CASE THIS HAPPENS, THE
COLLECTOR SHOULD BE TAKEN OUT AND EMP-
TIED BEFORE USING THE SEED DRILL AGAIN.
IF THE FAN’S TURNING SPEED IS ABOVE OR BE-
LOW 4200 AND 4500 RPM, THEN TURNING THE
WHEEL THAT CONTROLS THE DISTRIBUTOR’S
TRANSMISSION CAN CAUSE A BLOCKAGE INSI-
DE THE SEED HOSES.
7.2 SEED DISTRIBUTION BY HYDRAU-
LIC FAN.
MACHINE
TYPE
HYDRAULIC MOTOR
Absorbing capacity (cm
3
)
Speed (rpm)
600
8
4500
700
8
4500
MACHINE
TYPE
OIL SUPPLY
Minimum ouput
pressure (bars)
Maximum return
pressure (bars)
Oil flow
(L/min)
600
160
1,5
40
700
160
1,5
40
CONNECTIONS
Connect the fan’s small hydraulic hose line to a pressurised
tractor control unit. The fan’s 1/2’’ hydraulic hose line should
be connected to a depressurised return tractor control unit.
IN THE RETURN LINE THE PRESSURE MUST BE
A MAXIMUM OF 1,5 BAR. A HIGHER PRESSURE
CAN CAUSE DAMAGE TO THE TRACTOR’S MO-
TOR.
Fig. 59
ADJUSTMENT
The fan’s rpm is adjusted by regulating the tractor control
unit.
The fan’s turning speed must be adjusted to 4200 rpm or to
4500 rpm as shown in table above. If the turning speed is
lower then some seeds are likely to remain in the seed hoses
and block them.
IF OIL IS OVERHEATED DUE TO AN EXCESSIVE
FLOW OR DUE TO LOW OIL SUPPLY, THEN AN
ADDITIONAL OIL TANK WILL BE REQUIRED.
IF THE FLOW OF THE TRACTOR’S HYDRAULIC
PUMP IS NOT HIGH ENOUGH IT WILL NOT BE
ABLE TO POWER THE FAN’S MOTOR OR ACTI-
VATE THE OTHER ELEMENTS REQUIRED. IN THIS
CASE AUXILIARY EQUIPMENT CONSISTING OF
A HYDRAULIC PUMP FITTED ON THE TRAC-
TOR’S UNIVERSAL JOINT SHAFT THAT DRIVES
THE FAN’S HYDRAULIC MOTOR AS WELL AS A
REFRIGERATED OIL TANK WILL BE REQUIRED.
ASK THE MANUFACTURER.
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