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cups installed to install these bolts is more difficult and more likely
to lead to damage.
2. Install wind speed cups
Push the wind speed cup assembly onto the shaft on the top side of
the sensor package, as shown in Figure 5 on the left side. Tighten
the set screw, with a Philips screwdriver (size PH0), as shown on
the right side. Make sure the cup assembly can rotate freely. There
should be no noticeable friction when it is turning.
Figure 5: Wind speed cup installation diagram
3. Install wind vane
Push the wind vane onto the shaft on the opposite side of the wind
cups, until it goes no further, as shown on the left side in Figure 6.
Next, tighten the set screw, with a Philips screwdriver (size PH0), as
shown on the right side, until the wind vane cannot be removed
from the axle. Make sure the wind vane can rotate freely. The wind
vane’s movement has a small amount of friction, which is helpful in
providing steady wind direction measurements.
