Pipeline Flushing; Pressure Test - Samson 45-9 Mounting And Operating Instructions

Start-up and operation
6.1.2

Pipeline flushing

Î See Fig. 3 and Fig. 4
We recommend additionally flushing the
pipeline with installed regulator before start-
up.
Î Observe the mesh size of the upstream
strainer for the maximum particle size.
Use strainers to suit the process medium.
Rinsing the plant
1. After filling the plant, first completely
open the consumer
2. Adjust the maximum flow rate. Undo
lock nut (8.2) and turn the set point
screw (8.3) counterclockwise () as far
as it will go.
3. Rinse out the pipeline at full flow rate for
several minutes.
4. Check the strainer (e.g. measure the
pressure drop) and clean it, if necessary.
If the regulator malfunctions due to clogging
after flushing the pipeline, proceed as de-
scribed in Table 7.
24
6.1.3

Pressure test

NOTICE
!
Risk of damage to the diaphragm actuator
due to impermissible excess pressure.
The test pressure must not exceed the nomi-
nal pressure at the actuator by 1.5 times on
testing the pressure of the plant when the
regulator is already installed.
Note
The plant operator is responsible for
performing the pressure test. SAMSON's
After-sales Service department can support
you to plan and perform a pressure test for
your plant.
NOTICE
!
Risk of valve damage due to a sudden pres-
sure increase and resulting high flow veloci-
ties.
− Slowly open the shut-off valves.
All plant components must be designed for
the test pressure. Remove the regulator from
the pipeline, if necessary.
EB 3128 EN