Samson 44-6 B, Монтаж и эксплуатация, Страница: 32 / 66

5-6 EB 2626-2 EN
Installation
Risk of regulator damage due to a sudden
pressure increase and resulting high flow ve -
locities.
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Slowly open the shut-off valves.
During the pressure test, make sure the fol -
lowing conditions are met:
Î
Do not allow the pressure to exceed the
1.5 times the pressure rating of the valve
body.
Î
The regulator must remain open.
Therefore, adjust the lowest set point to
ensure that the regulator does not close.
Î
Make sure that the pressure rises simulta-
neously upstream and downstream of the
regulator to avoid damaging the balanc-
ing bellows.
5.5 Insulation
To insulate cold systems, we recommend first
filling the plant and carefully rinsing it. The
regulator must not yet be insulated at this
stage.
Risk of regulator damage due to incorrect
insulation.
Î
Only insulate the regulator up to the ac-
tuator housing for medium temperatures
below 0 °C/32 °F or above
80 °C/175 °F.
1. Start up the plant and adjust the set point
(see the 'Start-up' section).
NOTICE !
NOTICE
!
2. Shut down the plant again and let it heat
up until the condensation water has
dried off.
3. Insulate the regulator and pipes convey-
ing the process medium using insulation
material with a water vapor barrier. If an
external control line is to be routed
through the insulation, special care must
be taken with the sealing since slight
changes in shape may occur. The insula-
tion thickness depends on the medium
temperature and the ambient conditions.
50 mm is a typical thickness.