Malfunctions - Samson 3273 Mounting And Operating Instructions

Malfunctions

8 Malfunctions
Depending on the operating conditions, check the handwheel at certain intervals to prevent
possible failure before it can occur. Plant operators are responsible for drawing up an in-
spection and test plan.
Tip
Our after-sales service can support you in drawing up an inspection and test plan for your
plant.
Troubleshooting
Malfunction
Actuator or plug stem/threaded
rod does not move on demand.
The handwheel cannot be
turned.
The locking bolt cannot be un-
locked.
Note
Contact our after-sales service for malfunctions not listed in the table.
34
Possible reasons
Actuator is blocked.
Insufficient signal pressure
The handwheel is still locked.
The valve plug is already in the
end position.
The bolt is worn.
Recommended action
Check attachment.
Remove the blockage.
Check the signal pressure.
Check the signal pressure line for
leakage.
Unlock the handwheel (see sec-
tion 7.2).
–
Lubricate the locking bolt.
If the locking bolt remains
blocked, contact our after-sales
service.
EB 8312-2 EN