Samson 45-6, Монтаж и эксплуатация

Страница: 30 / 72

5-6 EB 3226 EN
Installation
5.4.2 Pressure test
The plant operator is responsible for per-
forming the pressure test.
SAMSON's Af-
ter-sales Service can support you to plan
and perform a pressure test for your plant.
Risk of regulator damage due to a sudden
pressure increase and resulting high flow ve
-
locities.
−
Slowly open the shut-off valves (1, 6).
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 nominal pressure of the
regulator 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
simultaneously upstream and
downstream of the regulator to avoid
damaging the balancing piston.
Note
NOTICE !
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.
1. Start up the plant and adjust the set point
(see the 'Start-up' section).
2. Shut down the plant again and let it heat
up until the condensation water has
dried off.
3. Insulate the regulator and pipes
conveying the process medium using
insulation material with a water vapor
barrier. If a 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
insulation thickness depends on the
medium temperature and the ambient
conditions. 50 mm is a typical thickness.
Risk of regulator damage due to incorrect
insulation.
Î
The regulator must be insulated for medi-
um temperatures below 0 °C.
Î
Only insulate the regulator up to the ac-
tuator for medium temperatures above
80 °C.
NOTICE !