Samson 3310, Монтаж и эксплуатация

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EB 8222-1 EN 8-1
Malfunctions
8 Malfunctions
Read hazard statements, warnings and caution notes in the 'Safety instructions and mea-
sures' section.
8.1 Troubleshooting
Malfunction Possible reasons Recommended action
Valve shaft does
not move on de-
mand.
Initial breakaway torque
too high
Shut off the section of the pipeline and flush the
valve to remove any deposits (dirt or other foreign
particles).
Depressurize valve and actuator. Use a cloth to
clean the segmented ball and seat ring.
Contact our after-sales service when bearings are
defective or have dirt deposits on them.
Contact our after-sales service when the segmented
ball is not correctly centered.
Tighten the fastening screws of the retainer using the
specified torque.
See 'Service and conversion work' section > 'Re-
placing the seat ring' > 'Final work'.
The segmented ball is
blocked.
Remove the blockage.
WARNING! A blocked segmented ball can suddenly
start to rotate during activities to unblock it. This can
lead to crush injuries to hands or fingers if they are
inserted into the valve.
Before attempting to unblock the segmented ball,
release any energy (in the actuator) which causes
the valve shaft to move (e.g. also the spring
compression). Disconnect and lock the pneumatic air
supply as well as the control signal.
Diaphragm in the actuator
defective
See associated actuator documentation.
Signal pressure too low Check the signal pressure.
Check the signal pressure line for leakage.
Incorrect setting of valve
accessories
Check the settings of the valve accessories.