Activities to be performed every 5 years
Component
Activity to be performed
Actuator
Maintenance including seal replacement
10.12
Check and adjust the positioner
After maintenance, the positioner must be properly reassembled. The function
must also be checked and, if necessary, reset. During assembly and
readjustment, the information provided in the corresponding manual must be
followed.
(Overview of positioner, see Section 10.6.1, Page 36)
10.12.1 Valve Stroke
Strokes depending on size
Size DN
Size OD
Valve stroke, standard
[mm]
DN 25
OD 1"
12.5
DN 40
OD 1 1/2"
12.5
DN 50
OD 2"
18.5
DN 65
OD 2 1/2"
18.5
Maintenance
Check and adjust the positioner
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