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3 R 71 EN - Issue 9/2020
7 MALFUNCTIONS
Table 3 lists malfunctions that might occur after prolonged use.
Table 3
Possible malfunctions
8 TOOLS
In addition to standard tools, the following special tools might be
needed to facilitate working. The tools can be ordered from the
manufacturer.
•
For removal of the actuator
- Extractor (ID-code table in actuator's IMO).
•
For mounting and removal of the seat
- Seat mounting tool (table 4).
Table 4
Seat mounting tool (Valve Series R1, R2)
9 ORDERING SPARE PARTS
When ordering spare parts, always include the following information:
•
type code, sales order number, serial number (stamped on a
valve body)
•
number of the parts list, part number, name of the part and quan-
tity required
This information can be found from the identification plate or
documents.
Symptom
Possible fault
Recommended action
Leakage through a closed valve
Wrong stop screw adjustment of the actuator
Adjust the stop screw for closed position
Faulty zero setting of the positioner
Adjust the positioner
Damaged seat
Replace seat
Damaged segment
Replace segment
Segment in a wrong position relative to the actuator
Select the correct keyway in the actuator
Irregular valve movements
Actuator or positioner malfunction
Check the operation of the actuator and positioner
Process medium accumalated on the segment surface
Clean the segment
Segment or seat damaged
Replace the segment or seat
Crystallizing medium has entered the bearing spaces
Flush the bearing spaces
Gland packing is leaking
Gland packing set worn or damaged
Replace the gland packing set
Product:
ID:
DN 01
273336
DN 015
273337
DN 02
273338
DN 03
273339
DN 04
273340
DN 06
273341
DN 08
273342
DN 10
273343
DN 12
273344
NOTE:
Always use original spare parts to make sure that the valve
functions as intended.
