Micron AU8115MS, Operator'S Manual & Parts List

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MICRON AU8115MS VEHICLE MOUNTED SPRAYER
6.5. Select the Correct Droplet Size
The correct spray droplet size must be selected for the application. The factory
settings for the AU8115MS are designed to produce the smallest possible droplet
size. For some spray applications, however, it may be more appropriate to select a
larger size of droplet. The size of the spray droplets produced by the spray head is
mainly determined by the rotational speed of the atomiser and decreasing the
rotational speed will produce larger droplets. The droplet size is also influenced the
properties of the spray mix.
Due to the loading effect of liquid flowing through the atomiser, the speed of rotation
(and therefore droplet size) will be affected by the liquid flow rate. The relationship
between atomiser blade angle setting, flow rate and atomiser rotational speed is
given in the table and graph below.
Atomiser Speed (RPM)
Blade Setting Number
Flow
(l/min)
1.75 2 4 6
0.00 11500 8700 4750 2700
0.25 10800 8600 4600 2650
0.50 10500 8300 4550 2600
1.00 9800 7850
4400 2540
1.50 9600 7600 3900 2400
6.6.
Changing the Droplet Size
The rotational speed of the atomiser is determined by the angle of the fan blades. A
fine blade angle (corresponding to a smaller setting number in the figure below)
gives a high rotational speed and small spray droplets. A coarser angle (larger
number) gives larger droplets.
The procedure to change the blade angle is as follows:
1. Remove the two screws
securing the rear casing of the
spray head. Slide off the rear
casing.
2. Rotate the atomiser so the
setting marks on a fan blade
can be seen through the
inspection hole in the support
ring.
Fig. 10 – Fan Blade Adjustment