Samson TROVIS 3730-3, Operating Instructions Manual

Page: 125 / 132

EB 8389 EN 125
Appendix
Message Possible reasons Recommended action
Status
classifica -
tion Single reset
Working range
−
The working range is
mainly close to the
CLOSED/max. OPEN
position.
− The working range is
mainly in the CLOSED/
max. OPEN position.
Rethink the working range. •
[ ]
•
Section 4.3.2
Friction − The friction is much high-
er/lower over the entire
working range.
− The friction is much high-
er/lower over a section.
Check the valve's packing. •
[ ]
•
Section 4.7.2,
section 5.2.2
Actuator springs
−
The spring stiffness is re-
duced (spring failure).
−
Reduced spring compres-
sion
− The actuator springs are
working at full capacity.
Check actuator springs. •
[ ]
•
Section 4.6.2,
section 5.1.2
Inner (seat) leakage Alarm limit 2 or 3 exceeded. Check seat and plug. •
[ ]
•
Section 7.1.2.4
Seat leakage exists. •
Section 4.4.2
External leakage External leakage may possibly
exist or is to be expected soon. Check the valve's packing. •
[ ]
•
Section 4.5.2
External leakage is perhaps
soon expected. •
Section 4.7.2
PST/FST The partial stroke test or the
full stroke test has not been
completed successfully. Check test cancellation condi-
tions. See section 5.4 and
section 5.5.
•
[ ]
•
Section 5.4.4,
section 4.5.2