Samson 3374 - Installation; Installation Conditions

EB 3018 EN 5-1
Installation
5 Installation
The work described in this section is to be
performed only by personnel appropriately
qualied to carry out such tasks.
Valve, diaphragm actuator and electric actu-
ator can be assembled before or after the
valve has been installed in the pipeline. We
recommend rst installing the valve without
the diaphragm actuator and without the
electric actuator into the pipeline.
5.1 Installation conditions
Work position
The work position for the regulator is the
front view onto all operating controls on the
regulator (including any additional ttings)
seen from the position of operating person-
nel.
Plant operators must ensure that, after instal-
lation of the device, the operating personnel
can perform all necessary work safely and
easily access the device from the work posi-
tion.
Pipeline routing
The inlet and outlet lengths vary depending
on several variables and process conditions
and are intended as recommendations. Con-
tact SAMSON if the lengths are signicantly
shorter than the recommended lengths.
To ensure that the regulator functions proper-
ly, proceed as follows:
Î Observe the inlet and outlet lengths (see
Table 5-1). Contact SAMSON if the reg-
ulator conditions or state of the medium
process deviate.
Î Install the regulator free of stress and
with the least amount of vibrations as
possible. Read information under
“Mounting position” and “Work posi-
tion” in this section.
Î Install the regulator allowing sufcient
space to remove the valve, actuator and
electric actuator or to perform service
work on them.
Mounting position
To ensure that the regulator functions proper-
ly, proceed as follows:
Î Standard mounting position: install the
actuator housing suspended downward
in horizontal pipelines (see Fig.5-1).
Î The electric actuator must be mounted
above the valve body.
Î Make sure the direction of ow matches
the direction indicated by the arrow on
the body.
Î Contact SAMSON if the mounting posi-
tion is not as specied above.
Possible malfunction and damage due to
adverse weather conditions (temperature,
humidity).
− Do not install the regulator outdoors or in
rooms prone to frost.
− Protect the regulator against frost if it is
used to control freezing media.
− Either heat the regulator or remove it from
the plant and completely drain the residual
medium.
NOTICE
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