ABB LS4000 Operating Instructions Manual page 65

Tightening fastening
nuts
LS4000, LS4060 DIODE LASER ANALYZERS | OI/LS4000/O2-EN REV. A
Install the isolation flange as follows:
Step Procedure
1 Before installing: Adjust the position of the threaded rods 6
screwed into the isolation flange to the thickness of the installa-
tion flange and of the purging flange. If necessary, loosen the lock-
ing screws that have been loosely screwed in 5.
2 Insert the isolation flange flat gasket 3 between the installation
flange 2 and the isolation flange 7.
3 Install the isolation flange 7 with the fastening nuts and washers 1
on the installation flange 2.
The retaining ring for the window in the isolation flange must
point towards the installation flange. Otherwise, the window is
not purged.
4 Insert the isolation flange O-ring 8 between the isolation flange 7
and the purging flange 9.
5 Install the purging flange 9 with the fastening nuts and washers 10
on the isolation flange 7.
6 Tighten the four locking screws 5.
7 For the purge gas supply, connect a pipe with an 8 mm outside
diameter to the purge gas connection 4 (¼ inch Swagelok® con-
nection).
Tighten all fastening nuts after assembly at intervals of 24, 48 and
72 hours, in order to compensate for the lingering tension release
in the material of the isolation flange flat gasket.
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