VEGA VEGASWING 63 Lock fitting ARV-SG63.3 – pressure range: -1…64 bar - Manual (Page 9)

5 Maintenance and fault rectification
5.1 Maintenance
When used as directed in normal operation, lock fitting ARV-
SG63.3 is completely maintenance-free.
5.2 Exchange seals
If you want to loosen the lock fitting, e.g. to change the
switching point, you have to exchange the graphite gasket
rings.
The numbers in brackets refer to the illustration under
"Mounting".
Danger:
Before dismounting, make sure that the vessel is unpressur-
ised
1 Loosen holding screw (6) and remove locking angle (4)
2 Loosen pressure screw (11)
3 Hold the tube of the sensor and loosen the terminal screws
(3)
4 Pull the sensor out of the lock fitting
5 Unscrew the pressure screw (11) out of the mounting boss
(7)
6 Screw the mounting boss (7) with a new resistant seal ring
into the thread of the vessel and tighten the mounting boss
(7) on the hexagon (SW 41 or SW 60)
7 Unpack the new gasket and graphite gasket rings. The
graphite gasket ring (9) is thin; the gasket rings (8) are a
little thicker and have a layer configuration.
Make sure that the rings are not damages. If you are not
sure, use new rings (article no. 2.29849)
8 First of all place one of the new gasket rings (8) into the
mounting boss (7). Then place the graphite gasket ring (9)
on top. This is followed by the second gasket ring (8)
9 Place the pressure ring (10) of metal to the gasket rings
10 Screw the pressure screw (11) with a view turns from top
into the mounting boss (7)
Lock fitting ARV-SG63.3 - – pressure range -1 … 64 bar 9
Maintenance and fault rectification
29752
-EN
-050804