Operation; Set Point Adjustment - Samson 2357-1 Mounting And Operating Instructions

Set point adjustment

3

Operation

3.1 Set point adjustment
The pressure regulator is adjusted at the
factory to the set points listed in the table.
However, you can change them by turning
the set point adjuster (10).
When pressure gauges are installed in the
connected pipelines, you can adjust the de-
sired set point directly while monitoring the
corresponding pressure gauge.
When no pressure gauge is installed, use the
adjustment diagram to adjust the set point.
To increase the set point, turn the set point ad-
juster into the body, and to decrease the set
point, turn the set point adjuster out of the
body.
1. Undo the lock nut to allow the set point
adjuster to move freely.
2. Determine the difference between the
fixed set point (table below) and the re-
quired set point. Turn the set point ad-
juster the required amount of turns as
specified in the diagram.
Any subsequent change in set point can
be also be made by determining the re-
quired number of turns using the specifi-
cations listed in the table in "Set point
change per turn".
Table 1 · Set point adjustment
Nominal pressure
Set point range in bar
Set point 2357-1
adjusted at the
factory to
2357-2
approx. ... bar
Set point change per turn
in bar
6
EB 2557 EN
PN 40
0.2 to 3 1 to 25
1 12
1 13
0.4 2.5
3. Secure the setting with the lock nut.
Set point/Set point range in bar
40
35
10 to 36
30
25
20
15
10
1 to 25
5
0
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14
Turns of the set point adjuster
Fig. 3 · Adjustment diagram
10 to 36 0.2 to 2.5
20 1
21 1
3.5 0.4
8 to 40
5 to 25
1 to 8
PN 50
1 to 8 5 to 25
3 12
4 13
1 2.5
8 to 40
25
26
3.5