8 2 BAR 70 en
Turn the flange screws or bolts facing one another cross-
wise and tighten uniformly using a torque wrench accord-
ing to operator’s specification (see Figure 7).
□ Finally connect the energy supply.
Figure 7 Example for crosswise flanging of piping for
twelve flange holes.
3.4 ATEX-version
If the valve has an ATEX design, the customer is responsible
for properly grounding the valve in accordance with the
applicable country-specific regulations. Operation without
grounding is not permitted.
A thread for the grounding screw located on the valve and /
or the bracket is available for the purpose of grounding.
(see Figure 8)
The customer is responsible for proper grounding and its
implementation.
Maintenance of the valve shall be made by Metso Service or
authorized personnel only.
Figure 8 Grounding
Pos.1 bis 5 sind nicht im Lieferumfang von Metso enthalten!
Metallisch blanke Oberfläche an der Klappe oder an der Brücke
12
3
4
1 … Sechskantschraube
2 … Erdungskabel (min. 16 mm
2
)
3 … Sechskantschraube
4 … Sechskantmutter
5 … Erdungsstange
Polished metallic surface on the valve or the bracket
1 … Hexagon bolt
2 … Grounding cable (min. 16 mm
2
)
3 … Hexagon bolt
4 … Hexagon nut
5 … Grounding rod
Items 1 to 5 are not included in the delivery of Metso!
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