Samson EB 14b, Монтаж и эксплуатация

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6-1
EB 14b_EN
January 2022 edition
Subject to technical changes
Start-up
6 Start-up
The work described in this chapter may only be performed by
specialist personnel quali
fi ed to perform the corresponding task.
Danger of burning due to hot or cold components and pipe!
Valve components and pipes can become very hot or very cold
during operation and cause burns upon contact.
Ö
Let the components and pipes cool down or warm up.
Ö
Wear protective garments and protective gloves.
Danger of injury due to pressurised components and escaping
medium!
Ö
Do not loosen the screw of an optional test connection while
the butter
fl y valve is pressurised.
Danger of crushing due to moving actuator- and switching
shaft!
Ö
Do not reach into the yoke as long as the pneumatic power is
connected to the actuator.
Ö
Before working on the butter fl y valve, interrupt and lock
pneumatic energy and the control signal.
Ö
Vent the actuator.
Ö
Do not allow the jamming of objects in the yoke to hinder the
operation of the actuator- and switching shaft.
Ö
If the actuator- and switching shaft are blocked (e.g. due to
“seizure” if not actuated for a long period of time”), release
the residual energy of the actuator (spring tension) before re-
leasing the blockage, see the corresponding actuator docu-
mentation.
Danger of injury due to escaping exhaust air!
During operation, when regulating or when opening and closing
the butter
fl y valve, exhaust air can escape, for example from the
actuator.
Ö
Wear eye protection when working near the valve.
Ensure the following conditions prior to commissioning/recom-
missioning:
− The butter fl y valve is installed properly in the pipe, see Chap-
ter “5 Assembly”.
− The leak and function tests have been completed successfully,
see Chapter “5.1 Installation conditions”.
− The current conditions in the concerned plant section corre-
spond to the design of the butter
fl y valve, see Intended use in
Chapter “1 Safety instructions and safety measures”.
WARNING
Commissioning/recommissioning
Ö
Open the butter fl y valve slowly in the pipe. Opening slowly
prevents a sudden increase in pressure and a resulting high
fl ow speed that damages the butter fl y valve.
Ö
Check the correct function of the butter fl y valve.