Samson 41-23 - Troubleshooting Common Issues

8-2 EB 2512 EN
Malfunctions
Malfunction Possible reasons Recommended action
Slow control response
Restriction in the screw joint of the
actuator dirty or too small
Î Clean screw joint or install larger screw joint.
Dirt in the control line Î Clean the control line.
Downstream pressure
drops below the
adjusted set point.
Regulatorinstalledagainsttheow
Î Installtheregulatorsothatthedirectionofow
matches the direction indicated by the arrow on
the body.
Regulator or K
VS
/C
V
coefcienttoo
small
Î Checkthesizing.
Î Change K
VS
/C
V
coefcient,ifnecessaryorin-
stalladifferentsizedregulator.
Î Contact SAMSON's After-sales Service.
Pressure tapped at the wrong place
(regulatorwithexternalcontrolline)
Î Reconnect the control line at another point.
Î Do not connect the control line at pipe bends or
necks.
Foreign particles blocking the plug
Î Remove foreign particles.
Î When parts are damaged, contact SAMSON’s
After-sales Service.
Compensation chamber in the wrong
position or too small (with steam)
Î Reconnect compensation chamber at a different
placeorreplaceit(seeAnnex).
Control line blocked Î Cleanthecontrollineandscrewttings.
Strainer blocked Î Clean strainer.
Jerkycontrol
response
Increased friction, e.g. due to foreign
particles between seat and plug
Î Remove foreign particles.
Î When parts are damaged, contact SAMSON’s
After-sales Service.
Loud noises Highowvelocity,cavitation
Î Checkthesizing.
Î Install larger regulator, if necessary.
Î Installowdividerwithgasesandsteam.
Leakage at the
actuator
Defectiveoperatingdiaphragm/bel-
lows
Î Replacedamageddiaphragm/bellows.
Leakage at the bellows
seal
Defective bellows seal
Î When parts are damaged, contact SAMSON’s
After-sales Service.
Red mark appears at
the diaphragm rupture
indicator (actuator
with two diaphragms).
Defective operating diaphragm Î Replace damaged operating diaphragm.