Installation Of The Atex Version; Commissioning - GEM Victoria 480 Installation, Operating And Maintenance Instructions

11. Slightly open the butterfl y valve 1. The
disc must not project from the body.
12. Insert bolts 4 in all holes in the fl ange.
5 4
13. Slightly tighten bolts 4 with nuts 5
diagonally.
14. Fully open the disc and check the
alignment of the piping.
15. Tighten nuts 5 diagonally until the
fl anges fi t tightly on the body.
Observe permissible tightening torque of
the bolts.
2 1 3
11.3 Installation of the ATEX
version
Potential
equalisation
1. Install the butterfl y valve, see chapter
11.2 "Installing the standard version".
2. Connect the earthing cable of the
butterfl y valve to the earth terminal of the
plant.
3. Check the resistance between earthing
cable and operator shaft (value <10
typical value <5 Ω).
12

Commissioning

Corrosive chemicals!
® Risk of caustic burns!
Check the tightness of the
G
media connections prior to
commissioning!
Use only the appropriate
G
protective gear when
performing the tightness
check.
Protect against leakage!
Provide precautionary measures
G
against exceeding the maximum
permitted pressures caused by
pressure surges (water hammer).
33 / 52
WARNING
CAUTION
480
Ω,
6