68
EB 8387-5 EN
Operating the positioner
7.6
Zero calibration
In case of inconsistencies in the closing position of the valve, e.g. with soft-seated plugs, it
might be necessary to recalibrate zero.
Risk of injury by exposed moving parts on the positioner, actuator or valve.
Do not touch or block exposed moving parts.
The process is disturbed by the movement of the actuator or valve.
Do not perform the zero calibration while the process is running. First isolate the plant by
closing the shut-off valves.
The positioner must be connected to the supply air to perform the zero calibration.
Enable configuration:
1.
Turn until Code
3
appears (reading:
OFF
).
2. Press
, the code number
3
blinks.
3.
Turn until
ON
appears.
4. Press
to confirm (reading: ).
WARNING
!
NOTICE
!
Note
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