Georg Fischer Piping Systems DSR 500-1 Betriebsanleitung Seite 30

2.6 Configuration
2.6.1 Self Adjusting Mode
The adjustment (self adjusting) of mounted positioners has been carried through in
the factory. Normally it is only required after replacing a positioner or repairing the
valve.
After a new or replaced positioner has been mounted to the valve it has to be adjusted as
follows:
1. Press both buttons "IN" and "OUT" until the green LED lights up (after 2-3 seconds).
2. The valve opens and closes several times, after completion the LED turns off. A lit red
LED indicates an error (e.g. supply air pressure too low!).
3. After completing the adjustment free from errors the positioner return to control mode
automatically.
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