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Vaisala WAA151 - Page 20

Vaisala WAA151
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User's Guide ________________________________________________________
18 _____________________________________________________ M210293en-A
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 a
new ones before reassembling.
5. Tighten the hexagon nut of the connector (2).
6. Connect the cable plug to the sensor body connector.
Fasten the sensor body on the crossarm with three
screws.
7. Mount the cup assembly onto the sensor body. Tighten
the fixing screw.
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.
The following numbers refer to Figure 6 on page 19:
1 = Cup wheel assembly
2 = Hex nut of the connector
3 = M6x16 DIN7991 (3 pcs)
4 = Lower body
5 = Spacer (3 pcs)
6 = Printed circuit board (PCB)
7 = Chopper disc
8 = External retaining ring, body
9 = Spacer ring
10 = Internal retaining ring, shaft
11 = Ball bearings
12 = Shaft and Upper body assembly
13 = Ball bearings
14 = O-rings, 2 pcs

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