Connecting The Control Medium; Optical Position Indicator; Setting The End Positions - GEM R481 Victoria Operating Instructions Manual

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
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
1 Normally closed (NC)
2 Normally open (NO)
3 Double acting (DA)
For connectors 2 / 4 see picture above

11.3 Optical position indicator

Open
www.gemu-group.com
2 4
Connectors
2: Control medium (open)
4: Control medium (close)
2: Control medium (open)
4: Control medium (close)
Closed

12 Setting the end positions

The end positions can be set by ± 20° (+5°/-15°).
2
1
Setting the 0° end position:
3
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.
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12 Setting the end positions
4
3
GEMÜ R481