Vaisala WMS302 Guia do Utilizador descarregar pdf (Página 172)

User's Guide ______________________________________________________________________

170 __________________________________________________________________M210630EN-B

Anemometer bearings:

1. Loosen the hubnut (14) with fingers or a 10 mm tool and remove

the cup wheel (13).

2. Remove the ball bearing assembly (12) by unscrewing it

counterclockwise (with a 10 mm tool).

3. Insert a new bearing assembly (12). Tighten gently.

4. Fasten the cup wheel to the sensor. Tighten gently.

Vane bearings:

1. Proceed as described in steps 1 and 2 above.

2. Open the lock screw (11) of the tail assembly (10) and remove the

screw.

3. Remove the Seeger-ring (9) (with narrow point pliers).

4. Remove the bearing assembly (8).

5. Replace the bearings inside the housing with new ones.

6. Assemble the sensor in the reverse work order.

Note that part number 6 in Figure 143 on page 171 consists of two parts.

The lower portion has a notch that is aligned at the factory in relation to

the output of the potentiometer to point north when the sensor is

mounted.

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Vaisala WMS302 Guia do Utilizador Página 172