Operation; Optical Position Indicator; Control Functions - Gemü 625 Original Einbau- Und Montageanleitung

Installation - Clamp connections:
When assembling clamp connections,
G
insert a gasket between the body clamp
and the adjacent piping clamp and join
them using the appropriate clamp fi tting.
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" (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.
Observe appropriate regulations for
connections!
After the installation:
Reactivate all safety and protective
G
devices.

10.2 Operation

Optical position indicator

Valve open
625
Valve closed
28 / 40

10.3 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: no defined normal
position. The valve is opened and closed
by activating the respective control
medium connectors (connector 2: open /
connector 4: close).
Control function 1: connector 4 is closed
with a blanking plug.
Control function 2: connector 2 is closed
with a blanking plug.
Connector 4
Connector 2