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Operation
3
Operation
3.1
Start-up
WARNING!
First start up the regulator after mounting all
the components.
Make sure the control lines are free of dirt
and their cross-section open. Prior to
start-up, check to ensure the control lines are
connected correctly.
Note: On filling the plant, the orifice (1.2)
must be open by turning the set point screw
(17) counterclockwise as far as it will go.
4
Open all valves on the consumer side.
Open the shut-off valves slowly prefera-
bly starting from the return flow pipe side.
Rinsing the plant · After filling the plant, first
completely open the consumers. Set the max-
imum flow cross-section (by turning the set
point screw counterclockwise as far as it will
go) and the maximum differential pressure
(by tensioning the set point spring). Rinse out
the pipeline at full flow rate for several min-
utes. Then check the installed strainer (e.g.
by measuring the pressure drop). Clean the
strainer, if necessary.
8
EB 3130 EN
NOTICE
When pressure-testing the pipelines with the
regulator installed, make sure the test pres-
sure does not exceed 1.5 times the nominal
pressure.
The orifice to adjust the flow rate at the regu-
lator must be completely open.
If necessary, remove the regulator from the
pipeline.
All plant components must be sized for the
test pressure.
3.2
Set point adjustment
The following generally applies: First adjust
the differential pressure set point and then
the flow limitation.
3.3
Differential pressure set point
3.3.1 Setting the differential
pressure
Type 46-6 only
Adjust the desired differential pressure at the
set point adjuster (10) or manual adjuster
(19) with the plant almost shut and with fully
open orifice (1.2). First afterwards adjust the
limit value for the flow rate.
Set point adjuster (10) or manual adjuster
(19)
– Turn it clockwise to load the springs → The
set point increases.
– Turn it counterclockwise to relieve the spring
tension → The set point is reduced.
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