Vega VEGADIF 85 - Exchange Process Module on Version IP68 (25 Bar)

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9 Diagnosis, asset management and service
VEGADIF 85 • Modbus and Levelmaster protocol
53571-EN-230814
It is recommended that the work be carried out on a clean, level
surface, e.g. a workbench.
Caution:
There is a risk of injury due to residues of process media in the pro-
cessanges.Takesuitableprotectivemeasuresagainstthis.
Proceed as follows:
1. Loosen hexagon head screws crosswise with wrench
2. Carefullyremovetheprocessangeswithoutdamagingthedif-
ferential pressure measuring cell
3. LiftO-ringsealsoutofthegroovesoftheprocessangesusinga
pointed tool
4. Clean O-ring grooves and separating diaphragms with a suitable
cleaner and soft cloth
Note:
Note additional cleaning for oil and grease-free version
Proceed as follows:
1. Insert new, undamaged O-ring seals into the grooves, check for
correct position
2. Mountprocessangescarefullyonthedierentialpressure
measuring cell, the seal must remain in the groove
3. Insert undamaged screws and nuts, screw together crosswise
4. First tighten with 8 Nm, then with 12 Nm
5. Finally tighten with 16 Nm at 160 bar, 18 Nm at 400 bar, 22 Nm
for copper gaskets.
Theprocessangesareexchanged.
Note:
After installing the device in the measuring point, carry out a position
correction again.
9.6 Exchange process module on version IP68
(25 bar)
On version IP68 (25 bar), the user can exchange the process module
on site. Connection cable and external housing can be kept.
Required tools:
•
Hexagon key wrench, size 2
Caution:
The exchange may only be carried out in the complete absence of
line voltage.
In Ex applications, only a replacement part with appropriate Ex ap-
proval may be used.
Dismounting
Mounting