EB 2183 EN
21
Mounting and start-up
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
The following points must be observed when
installing the strainer:
−
Do not use the strainer to permanently
filter the process medium.
−
Install the strainer upstream of the regu-
lator.
−
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.
Remember to leave enough space to remove
the filter element for cleaning.
Tip
Shut-off valve
Install a hand-operated shut-off valve both
upstream of the strainer and downstream of
the regulator. This allows the plant to be shut
down for cleaning and maintenance, and
when the plant is not used for longer periods
of time.
Thermometer
Install a thermometer downstream of the
temperature sensor to monitor the tempera-
tures prevailing in the plant (see Fig. 8).
5.3 Combination with control
thermostat
An additional Type 2430 Control Thermostat
is mounted in the TR/STM version.
If the limit temperature has not yet been ad-
justed, adjust it before mounting the control
thermostat (see section 6.1).
Î
Connect the Type 2430 Control Thermo-
stat to the safety temperature monitor (7)
by tightening the coupling nut (6) with
20 Nm.
Note