Samson EB 01b, Монтаж и эксплуатация

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11-1
EB 01b_EN
February 2022 edition
Subject to technical changes
Removal
11 Removal
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 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 residual medium in the valve!
When working on the valve, residual medium can escape and,
depending on the medium properties, cause injuries (e.g. scald-
ing, chemical burns).
Ö
Wear protective garments, protective gloves and eye protec-
tion.
Ö
Do not loosen the test connection while the valve is pressur-
ised.
Danger of injury due to prestressed springs!
Ö
SAMSON actuators with preloaded actuator springs are
pressurised. These actuators can be identi
fi ed by the elongat-
ed screws on the bottom of the actuator.
Ö
Before working on the actuator, release the compression from
the preloaded springs.
Prior to disassembly, make sure that the following conditions are
met:
− The valve is decommissioned, see chapter “10 Decommis-
sioning”.
WARNING
11.1 Removing the valve from the pipe
Ö
Loosen the fl ange connection.
Ö
Remove the valve from the pipe, see Chapter “4.3 Transport-
ing and lifting the valve”.
If a used valve is sent to PFEIFFER for service:
The valves must be decontaminated properly in advance.
Ö
When returning a used valve, include the safety data sheet
for the medium as well as con
fi rmation of decontamination of
the valve. Otherwise the valve will not be accepted.
PFEIFFER recommends documenting the following contamination
data in the form FM 8.7-6 “Declaration regarding the contami-
nation of PFEIFFER valves and components”.
11.2 Disassembling the actuator
See the corresponding actuator documentation.
WARNING
Tip