14
Quality for Professionals
6.4 Setting procedure (HG)
Variant 1 (constant pump - non-adjustable oil volume)
•
Screw the control valve all the way in (- Minus)
•
Start the fan (tractor engine speed as in field operation)
•
Set the fan speed with the control valve on the control block
•
The control block ensures that the engine does not overrev
TIP: The hydraulic pump on the tractor must pump sufficient oil so that the fan speed
does not fall, even if the engine speed of the tractor drops or other hydraulic
functions are actuated.
Variant 2 (adjustable pump or adjustable oil volume on the tractor)
•
Screw the control valve all the way out (+ Plus)
•
Close the flow control valve on the tractor (set oil volume to ZERO)
•
Start the fan and bring up to the desired fan speed (slowly increase the oil
volume)
TIP: The control block is designed for 80l/min - if the tractor pump produces a larger
volume than this, the system may overheat, even if the tractor has no oil cooling
system.
ATTENTION: This setting only applies to the tractor used. The fan must be re-
adjusted if another tractor is attached!
The correct setting is essential to prevent possible sowing errors at underspeed or
damage to the fan at overspeed!
Calibration table for the regulation valve:
Working width
Working width
Working width
3m
6m
12m
seed
scale
R/min
scale
R/min
scale
R/min
Rough
seed
3
2000-2600
4
2600-3400
max.
3400-5000
Fine
seed
2
1200-2000
3
2000-2600
4
2600-3400
