ECOWITT GW1002, Operation Manual

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of the sensor package with wind vane and speed cups already installed to
then install these bolts is more difficult and more likely to lead to damage.
4.2.2 Install wind vane
Push the wind vane onto the shaft on the bottom side of the sensor package,
until it goes no further, as shown on the left side in Figure 8. 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.
Figure 8: Wind vane installation diagram
4.2.3 Install anemometer cups
Push the wind speed cup assembly onto the shaft on the opposite side of the
wind vane, as shown in Figure 9 on the top 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.