Leser 330 Instructions De Service page 22

Installation
Example of Change-over Valve installation in a system
4. Align the connections of the Change-over Valve to the system connections.
5. Remove the protectors and the flange protection caps.
EN
6. Insert the flat gaskets between the flanges.
7. Insert the flange screws and secure them with the nuts.
8. Tighten the nuts crosswise.
9. Connect the safety valves to the Change-over Valve.
10. Turn the spindles to position the disc of the Change-over Valve to the very
11. Seal the optional openings (e.g. drainage openings) at the Change-over
12. Connect the optional lift indicators to the process control unit.
13. If connecting Change-over Valves to pilot-operated safety valves (POSV) in
Inlet side combination
1 Safety valves
2 Pipeline to blow-out system
3 Change-over Valve
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left or the very right.
Valve.
order to provide a separate pressure take-off point, ensure that the opening
of stagnation pressure pipe in the inlet of the Change-over Valves is facing
against the flow.
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The Change-over Valve is installed.
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