Samson EB 01a, Монтаж и эксплуатация

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6-1
EB 01a_EN
March 2023 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 test connection while the valve is pressur-
ised.
Danger of crushing due to moving actuator stem and stem!
Ö
Do not reach into the yoke as long as the pneumatic power is
connected to the actuator.
Ö
Before working on the valve, interrupt and lock pneumatic
energy and the control signal.
Ö
Do not allow the jamming of objects in the yoke to hinder the
operation of the stem and actuator stem.
Ö
If the actuator stem and stem are blocked (e.g. due to “sei-
zure” if not actuated for a long period of time”), release the
residual energy of the actuator (spring tension) before releas-
ing the blockage, see the corresponding actuator documenta-
tion.
Danger of injury due to escaping exhaust air!
During operation, when regulating or when opening and closing
the 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 valve is installed properly in the pipe, see Chapter “5 In-
stallation”.
− The leak and function tests have been completed successfully,
see Chapter “5.5 Testing the assembled valve”.
− No residual water is present in the fl ow section of the valve in
order to prevent a possible reaction with the medium.
− The current conditions in the concerned plant section corre-
spond to the design of the valve, see Intended use in Chapter
“1 Safety instructions and safety measures”.
Commissioning/recommissioning
Ö
The PTFE plastic sealing surfaces tend to fl ow. After commis-
sioning and reaching the operating temperature, tighten all
fl ange connections between the pipe and valve with the cor-
responding tightening torques, see Table 15-7 or Table 15-8
in Chapter “15.1.1 Tightening torque”.
WARNING
Ö
If required, retighten the screw connection of the body parts,
see Table 15-1 to Table 15-4 in Chapter “15.1.1 Tightening
torques”.
Ö
Open the valve slowly in the pipe. Opening slowly prevents a
sudden increase in pressure and a resulting high
fl ow speed
that damages the valve.
Ö
Check the correct function of the valve.