Samson 2357-11, Mounting And Operating Instructions

Page: 8 / 16

8 EB 2560 EN
Installation
4 Installation
In the delivered state, the regulators are
packed to be free of oil and grease for oxy-
gen service.
WARNING!
Use of oil and grease in oxygen at-
mospheres!
Risk of explosion!
Make sure that the regulator is abso-
lutely clean and free of oil and grease
on installing it.
Flush and clean the pipeline thoroughly be-
fore installing the regulator.
− Make sure the regulator is installed free
of stress.
−
Install a strainer upstream of the regu-
lator.
Otherwise, impurities in the pipeline
may impair the proper functioning of the
valve, above all the tight shut-off.
4.1 Mounting position
Install the pressure regulator with
the actuator housing suspended
downward in horizontal pipelines.
Observe the flow direction.
Type 2357-11 Pressure Build-up Regulator
with safety function
− Direction of flow from port B to port A
Type 2357-11 Pressure Reducing Valve
− Direction of flow from port A to port B
Type 2357-21 Excess Pressure Valve with
with non-return unit
A
B
− Direction of flow from port B to port A
The ports are marked.
Required spare parts and accessories are
listed in Data Sheet
u
T 2570 EN.
4.2 Shut-off valve
We recommend installing a hand-operat-
ed shut-off valve both upstream and down-
stream of the regulator. This allows the plant
to be shut down for cleaning and mainte-
nance, and when the plant is not used for
longer periods of time.
Install a pressure gauge at a suitable point to
monitor the pressures prevailing in the plant.
5 Operation
See Fig. 1 on page 7.
5.1 Start-up
First start up the regulator after mounting all
parts.
5.2 Set point adjustment
Every pressure regulator is delivered with the
set point listed in Table 1 already adjusted.
Turn the set point adjuster (10) using Al-
len key (size 5 mm) to change the default set
point.
Provided a pressure gauge has been in-
stalled at a suitable point in the plant, the
required set point can be directly adjusted