46
EB 2517 EN
Malfunctions
Table 9:
Troubleshooting
Malfunction
Possible reasons
Recommended action
Jerky control
response
Increased friction, e.g. due to foreign
particles between seat and plug.
Î
Remove foreign particles.
Î
Replace damaged parts.
Î
Contact SAMSON's After-sales Service depart-
ment.
Slow control response
Control line or restriction blocked by
dirt causing the flow through it to be
restricted.
Î
Clean the control line.
Î
Clean the restriction.
Upstream pressure
fluctuates
Regulator or K
VS
/C
V
coefficient too
large
Î
Check the sizing.
Î
Change K
VS
/C
V
coefficient, if necessary or in
-
stall a different sized regulator.
Î
Contact SAMSON's After-sales Service depart-
ment.
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.
The restriction in the control line for
pressure tapping is too small or miss-
ing.
Î
Install a restriction.
Loud noises
High flow velocity, cavitation.
Î
Check the sizing.
Î
Install larger regulator, if necessary.
Leakage at the
actuator.
Defective operating diaphragm/
bellows.
Î
Replace damaged diaphragm/bellows.
Leakage at the bellows
extension.
Defective bellows seal
Î
Replace bellows seal.
Î
Contact SAMSON's After-sales Service depart-
ment.
Red mark appears at
the diaphragm rupture
indicator (actuator
with two diaphragms).
Defective operating diaphragm
Î
Replace damaged operating diaphragm.
Summary of Contents for 2413 Series
Page 11: ...EB 2517 EN 11...
