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NOTICE
!
Possible malfunction and damage due to ad-
verse weather conditions (temperature, hu-
midity).
− Do not install the device 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 after a plant shutdown.
5.2 Additional fittings
Strainer
A strainer installed upstream in the flow pipe
holds back any dirt or other foreign particles
carried along by the medium. For example,
the SAMSON Type 1 NI Strainer is suitable
(u T 1010).
The following points must be observed
during installation of the strainer:
− Allow sufficient space to remove the filter.
− Observe the flow direction.
− In horizontal pipelines with gases or liq-
uids, the filter element faces downward.
The filter element faces sideways in ap-
plications with steam.
− Install strainers in vertical pipelines with
the medium flowing upward with the
drain plug facing upward.
Note
Check the strainer at regular intervals and
clean it, if necessary.
EB 2623-1 EN
Shut-off valve
Install a hand-operated shut-off valve both
upstream of the strainer and downstream of
the regulator (see Fig. 5). This allows the
plant to be shut down for cleaning and
maintenance, and when the plant is not used
for longer periods of time.
Pressure gauges
Install a pressure gauge both upstream and
downstream of the regulator to monitor the
pressures prevailing in the plant (see Fig. 5).
Mounting and start-up
21
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