38 / 56
R693
b) Setting the potentiometer:
In the condition as supplied to customer,
the potentiometer is swivelled away from
the actuator drive.
Connect supply voltage to terminal
2
(L)
and terminal
3
(N)
→
actuator moves into CLOSED position
until limit switch cuts out.
Gently turn the toothed gear of the
potentiometer (DN 50: bottom toothed
gear) clockwise as far as it will go.
Turn the toothed gear 3 teeth back.
Press the potentiometer support plate
onto the actuator gear and fasten using
the supplied bolt.
To adjust the play in the toothed gear,
loosen the other bolt of the potentiometer
support plate (on the opposite side of the
potentiometer).
There must be some play in the toothed
gear of the potentiometer.
Move plate anticlockwise:
→
increases play in toothed gear
Move plate clockwise:
→
reduces play in the toothed gear.
Fasten the potentiometer support plate
bolts.
Toothed
gear
Fixing bolt
Potentiometer support plate
Loosen bolt to set
the toothed gear play
Increased toothed gear play
Reduced toothed gear play
11.3 Optical position indicator
Valve open
Valve closed
Summary of Contents for R693
Page 27: ...27 56 R693 ...
Page 53: ...53 56 R693 ...
Page 54: ...54 56 R693 ...
Page 55: ...55 56 R693 ...
