Samson 44-0 B Mounting And Operating Instructions page 38

Malfunctions
Malfunction
Downstream pressure
hunts
Jerky control re-
sponse
Loud noises
Leakage at the regulator
8-2
Possible reasons
Regulator or K /C coefficient
VS V
too large
Pressure tapped at the wrong
place (regulator with external
control line)
Increased friction, e.g. due to for-
eign particles between seat and
plug
High flow velocity, cavitation
Operating bellows defective
Recommended action
Î Check the sizing.
Î Change K /C coefficient, if necessary or install
VS V
a different sized regulator.
Î Contact SAMSON's After-sales Service.
Î Reconnect the control line at another point.
Î Do not connect the control line at pipe bends or
necks.
Î Remove foreign particles.
Î Replace damaged parts.
Î Contact SAMSON's After-sales Service.
Î Check the sizing.
Î Install larger regulator, if necessary.
Î Install flow divider with gases and steam.
Î Replace the operating bellows.
Î Contact SAMSON's After-sales Service.
EB 2626-1 EN