GEA VARIVENT FRS, Инструкция по эксплуатации

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Carry out the following steps:
1.
Fit valves with detachable pipe connection elements – using suitable
connection fittings – directly into the pipe system.
®
Valve is installed.
6.4 Valve with Welded Ends
This section describes the welding procedure for the valve housing.
Warning!
Falling of the valve
When undoing the clamp connections at the drive or housing there is risk of
injury. Ensure a sufficiently secured support of the valve especially in
hanging installation position.
► Components with sharp edges: The valve disk (6) has sharp edges.
Always wear gloves and suitable safety equipment during installation.
Notice
Seals are wearing parts
Old seals will cause malfunction of the valve
► Replace old seals.
Carry out the following steps:
1.
Remove valve insert, see chapter “dismantle valve FRS”.
2. Dismantle the flush valves (41)
3. Weld the housing, without sealing rings, into position, ensuring that the
connection is free of stress.
4. Fit the housing into place and tack it.
5. Always close the housing before welding.
6.
Flush the housing with forming gas from the inside to push the oxygen out of
the system.
7.
Weld the housing into the pipe system; use welding filler if necessary. Use the
TIG welding with pulse method.
8. Passivate the seam after welding.
9.
Fit the seals.
10. Assembling the Valve
®
Install the valve with welded ends.
Hint!
Welding method:
We recommend using the automatic orbital welding method.
6.5 Pneumatic connections
Assembly and installation
Valve with Welded Ends
430BAL013059EN_7
28 24.03.2022