Samson 2404-2, Монтаж и эксплуатация

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EB 2540 EN 8-1
Malfunctions
8 Malfunctions
8.1 Troubleshooting
Malfunction Possible reasons Recommended action Note
Malfunction only occurs when the consumer is closed or during low load:
Upstream
pressure does
not reach the
adjusted set
point
Pilot valve
Leak between seat and
plug
Î
Remove valve from the
pipeline and clean seat
and plug. Renew plug, if
necessary. If this is not
possible, return
regulator for repair.
Install a shut-off valve instead
of the pilot valve. If the main
valve closes when the shut-off
valve is closed, the pilot valve
has caused the malfunction.
Main valve
Leakage between seat
and plug
Î
Remove valve from the
pipeline and clean seat
and plug. Renew plug, if
necessary. If this is not
possible, return
regulator for repair.
–
Balancing diaphragm of
the main valve defective.
Î
Replace the balancing
diaphragm with a new
one.
Install a shut-off valve instead
of the pilot valve. If the main
valve does not open when the
shut-off valve is opened, the
main valve has caused the
malfunction.
Malfunction occurs when the consumer is open or at maximum load:
Upstream
pressure rises
far above the
adjusted set
point.
The pilot valve does not
function. Balancing
diaphragm defective.
Medium leaks from the
actuator.
Î
Replace the defective
component.
Install a shut-off valve instead
of the pilot valve. If the main
valve closes when the shut-off
valve is closed, the pilot valve
has caused the malfunction.
The pilot valve is
blocked.
Î
Clean the pilot valve.
Apply grease to plug
stem guides, if
necessary. Replace
defective parts.
–
Main valve seized up
Î
Clean main valve.
Install a shut-off valve instead
of the pilot valve. If the main
valve does not close when the
shut-off valve is closed, the
main valve has caused the
malfunction.