User`s guide

User’s Guide ______________________________________________________________________
144 __________________________________________________________________M210662EN-A
Wind Vanes
Periodic Maintenance
Cleaning
Heavy contamination in the vane, such as bird dropplets or ice will
deteriorate the accuracy of the wind vane. Clean the vane when
necessary.
Testing Proper Operation
The sensor will hold its accuracy in all conditions for 1 year. If the rains
are mostly casual and moderate, and the atmospheric corrosion is
typical, the sensor accuracy will remain for 2 years.
However, the ball bearings must be checked once a year and the sensor
shaft rotated manually. To do this, remove the vane assembly. To
ensure proper operation, the shaft should spin smoothly and it should
not create any detectable noises.
Replacing Bearings of WAV151
Replacement of the bearings should only be done by a trained
technician. To replace the ball bearings of WAV151, follow the
procedure below and refer to Figure 112 on page 147.
1. Open the vane assembly fixing screw with a 2-mm Allen key. The
correct screw is the lower one shown in Figure 112 on page 147.
Remove the vane assembly.
CAUTION
The heating resistance element cannot be removed without special
tools. To avoid any damages, it is recommended that replacement of
the heating element be carried out by the manufacturer.
CAUTION
The vane assembly fixing screw has been treated with sealant. Do not
remove the fixing screw to ensure perfect sealing after reassembling.