Vaisala HMP230 - Manual (Page 14)

HMP230 SERIES
User's Guide
M210225en-B
8
tightening cone
sealing washer fitting body nut
4. Mark both the fitting body and the nut hex.
A pen
fitting body
nut
5. Tighten the nut a further 30° (1/12 turn) or if you have a torque span-
ner tighten it with a torque of 80 ±10 Nm. NOTE: after detachment
the nut must be tightened without increased effort.
30°
6. The tightening cone of the fitting body has to be cleaned and greased
after every tenth detachment. Use high-vacuum grease (Down
Corning, Europe) or a similar grease.
clean cotton stick
tightening cone
sealing
washer
fitting body
The sealing washer has to be changed every time the fitting body is
detached.