exceptional rule applies. Further details about it may be taken from the separate
setting Chart.
For the spring spreading season when the crop has grown up to 40 cm tall, one half
of the crop height should be added to the above stated disc heights above the ground
(i.e. 80/80 or 8Oi77 cm). If the crop Stands taller follow the instructions for late top
dressing (Para. 3.8).
If the crop Stands very dense (e.g. Rape) the fertilizer broadcaster should be set at
80/80 or 80/77 resp. above the crop. If that is no langer possible than please also
follow the instructions for late top dressing (Para. 3.8).
3.4.2 Opening or shutting of the outlet openings
The fertilizer is guided through the two openings from the Split hopper onto the
spreading discs. These openings are shut by a hydraulic ram (Fig. 3/1) and opened
by spring action (Fig. 3/2).
Shutting the leck taps ensures that the closed shutters do not open by themselves
through weak spool valves or after long periods.
The shutters tan be actuated independently of one another allowing the spread to
one side only. The precondition for this is the availability of two hydraulic sockets
which tan be actuated independently from one another. At tractors with only one
Single acting hydraulic socket a twoway unit (Option, Order No. 145 600) is required.
The rods with the red taps to the left and right of the P.T.0 shaft indicate whether the
shutter slides are open or closed.
3.4.3 Setting the spread rate
Setting the spread rate should be conducted with the hydraulics keeping the shutter
slides closed.
The spread rate is set with the aid of the two setting levers (Fig. 411). These function
as stop to the shutter slides so that it is possible to set varying shutter openings.
The kind of fertilizer, the working width, the forward Speed and the desired spread
rate are the factors for the various setting figures. These are compiled in the setting
Chart. From the setting Chart it is known (example Fig. 5) on which setting number the
levers (Fig. 4/1) are to be set. To Set, the thumb nuts (Fig. 4/2) are loosened slightly
and the Pointers on the lever (Fig. 4/3) should Point to the corresponding setting
figure on the scale (Fig. 4/4). Then the two thumb-nuts (Fig.4/2) are retightened.
Example:
Spreading material:
Calcium Ammonium Nitrate 27 % N, BASF
(white)
Working width:
15 m
Forward Speed:
8 km/h
Desired spread rate: 360 kg.s/ha
Setting figure for the setting levers: 32
Please refer to para 7.1 for the way of checking the basic setting of the shutter slides.
13
To Next Page
