Control Functions - GEM BioStar 650 Installation, Operating And Maintenance Instruction

insert a gasket between the body clamp
and the adjacent piping clamp and join
them using the appropriate clamp fitting.
The gasket and the clamp for clamp
connections are not included in the scope
of delivery.
Important:
Butt weld spigots / Clamp
connections: Angle of rotation for
welding into pipeline to enable
optimised draining see brochure
"Angle of rotation for 2/2-way valve
bodies" (on request or
www.gemu-group.com).
Installation - Threaded connections:
Screw the threaded connections into the
G
piping in accordance with valid standards.
Screw the diaphragm valve body into the
G
piping, use appropriate thread sealant.
The thread sealant is not included in the
scope of delivery.
Installation - Flange connection:
1. Pay attention to clean, undamaged sealing
surfaces on the mating flanges.
2. Align flanges carefully before installing them.
3. Centre the seals accurately.
4. Connect the valve flange and the piping
flange using appropriate sealing material
and matching bolting. Sealing material
and bolts are not included in the scope
of delivery.
5. Use all flange holes.
6. Only use connector elements made of
approved materials!
7. Tighten the bolts diagonally!
Observe appropriate regulations for
connections!
After the installation:
Reactivate all safety and protective
G
devices.

10.2 Control functions

The following control functions are available:
Control function 1
Normally closed (NC):
Valve resting position: closed by
spring force. Activation of the actuator
(connector 2) opens the valve. When the
actuator is vented, the valve is closed by
spring force.
Control function 2
Normally open (NO):
Valve resting position: opened by spring
force. Activation of the actuator (connector 4)
closes the valve. When the actuator is
vented, the valve is opened by spring force.
Control function 3
Double acting (DA):
Valve resting position: opened by spring
force. The valve is opened and closed
by activating the respective control
medium connectors (connector 2: open /
connector 4: close).
Connector 2
Control function 1
Connector 4
Connector 2
Control function 2 + 3
Control function
1 (NC)
2 (NO)
3 (DA)
+ = available / - = not available
(for connectors 2 / 4 see pictures above)
37 / 52
Connectors
2 4
+ -
- +
+ +
650