www.gemu-group.com
29 / 41
GEMÜ R481
11.2 Connecting the control medium
1. Use suitable connectors.
2. Connect the control medium lines tension-free and
without any bends or knots.
Thread size of the control medium connectors: G1/4
1
2
3
4
3. Remove the protection cap
1
.
4. Screw the control medium line
3
into control medium con-
nector
2
.
5. If appropriate, screw the second control medium line into
control medium connector
4
.
Control function
Connectors
1 Normally closed (NC)
2: Control medium (open)
2 Normally open (NO)
4: Control medium (close)
3 Double acting (DA)
2: Control medium (open)
4: Control medium (close)
For connectors 2 / 4 see picture above
11.3 Optical position indicator
Open
Closed
12 Setting the end positions
The end positions can be set by ± 20° (+5°/-15°).
2
1
4
3
Setting the 0° end position:
1. Move the butterfly valve to the closed position.
2. Loosen the lock nut
1
.
3. Set the end position via screw
2
.
4. Tighten the lock nut
1
.
Setting the 90° end position:
5. Move the butterfly valve to the open position.
6. Loosen the lock nut
3
.
7. Set the end position via screw
4
.
8. Tighten the lock nut
3
.
12 Setting the end positions
