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9 Malfunction
Î Troubleshooting (see Table 9-1).
Note
Contact SAMSON's After-sales Service for malfunctions not listed in the table.
Table 9-1: Troubleshooting
Malfunction
Actuator stem does not move.
Actuator stem does not move
through the whole range.
The actuator does not control the
valve position.
EB 5827-2 EN
s
Possible reasons
Actuator is blocked.
No or incorrect supply voltage
connected.
No or incorrect supply voltage
connected.
The actuator was not initialized
during start-up.
The mounting has been changed.
Malfunctions
Recommended action
Î Check attachment.
Î Remove the blockage.
Î Check the supply voltage
and connections.
Î Check the supply voltage
and connections.
Î Check the switch position
of the function and direc-
tion of action switches.
Î Initializing the actuator
9-1
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