ARI Armaturen BR015-ZIVA-G EN - Manual (Page 12)

Page 12 Rev. 0040201000 0511
Operating and installation instructions
ZESA
®
/ GESA
®
/ ZIVA
®
-Z / ZIVA
®
-G
7.1 Changing seat and O-ring seal
(ZIVA
®
-Z / ZIVA
®
-G)
fig. 10
- Observe safety instructions
- Grease seat (pos. 2) when changing
Lubricant: e.g. Berusoft 30 valve grease
obtainable from: Carl Bechem GmbH, Weststrasse 120, D-58089 Hagen
or a lubricant suitable for this application.
ATTENTION!
- Always ensure that the lubricant is compatible with the medium.
- It is not safe to replace the O-ring seal (pos. 11) until the system has cooled
down and the plant is pressureless.
- For safety reasons we recommend that the O-ring seal (pos. 11) only be
changed when disassembled.
- Prior to disassembling the butterfly valve note points 10.0 and 11.0.
- When the butterfly valve is activated there is a crushing hazard between valve
disc and body.
- Maintenance work inside the pipeline (large nominal diameters) should only be
carried out when the butterfly valve is safely deactivated (disconnect actuator
from power supply).