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Operation
adjuster according to the value on the scale
(see Fig. 10).
Note
The maximum value on the scale of the set
point adjuster is 8. However, the maximum
set point is reached earlier (see Fig. 10).
In the DN 15 and 25 version, one turn of the
set point adjuster will change the differential
pressure by approx. 0.033 bar in the range
from 0.2 to 1 bar and by approx. 0.02 bar
in the range from 0.2 to 0.6 bar.
In the DN 40 version, one turn of the set
point adjuster will change the differential
pressure by approx. 0.022 bar in the range
from 1.0 to 2.2 bar.
Fig. 10: Differential pressure set point adjusted according to the value on the scale · DN 15 and 25
26
∆p bar
1,2
1,0
0,8
0.2 to 1 bar
0,6
0,4
0,2
0
1
2
3
NOTICE
!
Risk of regulator malfunction due to incor-
rect setting.
A scale value below 1 may lead to incorrect
control.
Only adjust values above 1 on the scale.
If the setting is incorrect (value on the scale
below 1), proceed as follows:
− Depressurize the regulator.
− Turn the set point adjuster counterclockwise
() as far as it will go (minimum setting).
− Turn the set point adjuster back clockwise
to a value between 1 to 2 on the scale.
The set point can now be adjusted.
0.2 to 0.6 bar
Value on scale
4
5
EB 3131-1 EN
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