Samson EB 8111 EN, Монтаж и эксплуатация

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EB 8111/8112 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
Actuator and plug stem
does not move on de-
mand.
Actuator is blocked. Check attachment.
Unblock the actuator.
WARNING! A blocked actuator or plug stem (e.g.
due to seizing up after remaining in the same
position for a long time) can suddenly start to move
uncontrollably. Injury to hands or fingers is possible
if they are inserted into the actuator or valve.
Before trying to unblock the actuator or plug stem,
disconnect and lock the pneumatic air supply as
well as the control signal. Disconnect the supply
voltage. Before unblocking the actuator and piston
stem, release any stored energy in the actuator (e.g.
spring compression). See associated actuator
documentation.
Pneumatic/electro -
pneumatic actuators:
diaphragm in the actu-
ator defective
See associated actuator documentation.
Signal pressure too low Check the signal pressure.
Check the signal pressure line for leakage.
No or incorrect supply
voltage connected.
Check the supply voltage and connections.
Actuator and plug stem
does not stroke through
the entire range.
Signal pressure too low Check the signal pressure.
Check the signal pressure line for leakage.
No or incorrect supply
voltage connected.
Check the supply voltage and connections.
Incorrect setting of
valve accessories
Check the settings of the valve accessories.