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8 Malfunctions
8.1 Troubleshooting
Malfunction
The solenoid valve does not
switch.
The solenoid valve leaks to the
atmosphere.
Note
Contact SAMSON's After-sales Service department for malfunctions not listed in the table.
8.2 Emergency action
The solenoid valve has a safety function. Up-
on failure of the supply voltage, it automati-
cally closes (closed in the de-energized
state).
The plant operator is responsible for emer-
gency action to be taken in the plant.
EB 3969 EN
Possible reasons
Incorrect terminal assignment.
Turn turnable gasket to external
pilot supply.
Gasket slipped.
Pilot pressure is insufficient and
an intermediate position of the
solenoid valve is reached (air is
constantly vented)
Malfunctions
Recommended action
Check electrical connection.
Connect port 9 and supply it
with compressed air. Alterna-
tively, turn the turnable gasket
to internal pilot supply.
Check that the formed seal and
O-rings are correctly seated.
Check the pressure line.
Check the pressure line for
leakage.
Use a larger cross-section for
the pressure line.
39
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