Operation; Control Functions; Connecting The Control Medium - Gemü 615 Original Einbau- Und Montageanleitung

Important:
Diaphragms loose seal compression
in the course of time. After valve
installation
ning make
the nuts 20 (see chapter 19
"Sectional
parts"). Bolt tightness / valve
sealing should be checked on a
regular basis and points 6-7 of
chapter 11.4 should be repeated.
Reactivate all safety and protective
G
devices.

10.2 Operation

Optical position indicator
Valve open

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
and commissio-
sure to retighten
drawing and spare
Valve closed
Double acting (DA):
Valve resting position: no defi ned 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.
Control
function
1 (NC)
2 (NO)
3 (DA)
+ = available / - = not available
(for connectors 2 / 4 see photo above)
10.4 Connecting the
control medium
Important:
Connect the control medium lines
tension-free and without any bends
or knots!
Use appropriate connectors
according to the application.
Thread size of the control medium connector:
G1/4
27 / 40
Connector 4
Connector 2
Connectors
2 4
+ -
- +
+ +
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