Operation; Adjusting The Set Point - Samson 42-36 Mounting And Operating Instructions

7 Operation

Immediately after completing start-up or
placing the regulator back into service (see
the 'Start-up' section), the regulator is ready
for use.
WARNING
Risk of burn injuries due to hot or cold
components and pipeline.
Regulator components and the pipeline may
become very hot or cold. Risk of burn inju-
ries.
Î Allow components and pipelines to cool
down or warm up to the ambient tem-
perature.
Î Wear protective clothing and safety
gloves.
WARNING
Risk of personal injury due to pressurized
components and process medium being dis-
charged.
Î Do not loosen the control line while the
valve is pressurized.
Î Do not start up the regulator until all
parts have been mounted.
EB 3015 EN
WARNING
Risk of hearing loss or deafness due to loud
noise.
Noise emission (e.g. cavitation) may occur
during operation caused by the process me-
dium and the operating conditions.
Î Wear hearing protection when working
near the valve. Follow the instructions
given by the plant operator.

7.1 Adjusting the set point

Î The control and shut-off valves as well as
all consumers or a bypass valve (if in-
stalled) must be open to ensure that the
maximum flow rate is reached.
Î Set the required flow rate by adjusting
the restriction (1.4), while watching, for
example the reading of a flow rate mea-
suring unit at the heat meter (see Table
7-1).
Note
Adjustment is always based on the closed re-
striction.
− Turning it clockwise () closes the
restriction; the flow rate drops.
− Turning it counterclockwise () opens the
restriction; the flow rate rises.
To adjust the flow rate, use the adjustment
diagrams for water (Fig. 7-1 to Fig. 7-8).
Operation
7-1