Operation - HEROSE 06001 Notice D'utilisation

6

Operation


The maximum permissible pressure drop in the supply lines to the safety valves may not exceed
the 3% pressure difference between the response pressure and superimposed back pressure on
the safety valve.

Vibrations are to be avoided.
 Check the following points prior to start-up:
 All mounting and installation work are completed.
 Compare the material, pressure, temperature and installation position with the layout plan for
the pipework system.
 Dirt and residues have been removed from the pipeline and safety valve in order to prevent
leaks.
6.1 Liftability (manual actuation for testing)
 Liftable safety valves are equipped with an appropriate device above the spring cap.

Liftable safety valves can be made to open at ≥85 % of the set pressure without aids.
 Typical lifting cases are initial commissioning, after breaks in operation and functional testing; the
procedure is as follows:
24
Operating instructions
Step 1: Loosen the lifting knob and pull it upwards until
blow-off of the operating medium is clearly audible.
Step 2: Release the lifting knob and tighten it again.
Step 1: Pull the lifting lever away from the spring cap
until blow-off of the operating medium is
clearly audible.
Step 2: Release the lifting lever again
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