Vaisala AWS330, User Manual

Page: 190 / 298

User's Guide ______________________________________________________________________
186 _________________________________________________________________ M211296EN-A
4. Put the lower body assembly (4) carefully into place. Fasten the
three screws (3) at the bottom of the sensor. Make sure that the
bigger O-ring (14) is correctly positioned between the upper and
the lower sensor bodies. Check also that the connector O-ring (14)
is in place. The O-ring is recommended to be replaced with a new
one after each opening.
NOTE When placing the lower body assembly, make sure that the O-ring is
correctly positioned between the upper and lower bodies. It is
recommended to replace the O-rings with new ones before reassembling.
5. Tighten the hex nut of the connector (2).
6. Connect the cable plug to the sensor body connector. Fasten the
sensor body on the cross arm with three screws.
7. Mount the vane assembly onto the sensor body. Tighten the screw.
CAUTION
The heating resistance element cannot be removed without special tools.
To avoid any damage, it is recommended that replacement of the heating
element be carried out by a trained technician.
The following numbers refer to Figure 111 on page 187:
1 = Vane assembly
2 = Hex nut of the connector
3 = M6 x 16 DIN7991 (3 pcs)
4 = Lower body
5 = Spacer (3 pcs)
6 = Printed circuit board (PCB)
7 = Code disc
8 = External retaining ring, body
9 = Spacer
10 =
Internal retaining ring, shaft
11 = Ball bearings
12 = Shaft and Upper body assembly
13 = Ball bearings
14 = O-rings, 2 pcs