USER'S GUIDE____________________________________________________________________
38 __________________________________________________________________ M210704EN-F
5.
Tighten the nut a further 30º (1/12) turn or if you have a torque
spanner tighten it with a torque of 80 ± 10 Nm (60 ± 7 ft-lbs).
0503-034
Figure 22
Tightening the Nut
NOTE
When re-tightening the nut after detachment the nut must be tightened
without increased effort.
6.
Clean and grease the tightening cone of the fitting screw after every
tenth detachment. Change the sealing washer every time the fitting
screw is detached. Use high-vacuum grease (for example Dow
Corning) or a similar grease.
0503-033
Figure 23
Cleaning of the Tightening Cone
The numbers refer to Figure 23 above:
1 = Fitting
screw
2 = Sealing
washer
3 = Tightening
cone
4
=
Clean cotton stick
CAUTION
In pressurized processes it is essential to tighten the supporting nuts and
screws very carefully to prevent loosening of the probe by the action of
pressure.
