After The Installation; Pneumatic Connections; Control Functions - Gemü R690 Betriebsanleitung

11 Pneumatic connections

Connector elements!
▶ The connector elements are not included in the scope of
delivery.
Only use connector elements made of approved materi-
●
als.
Observe permissible tightening torque of the bolts.
●
1. Keep sealing material ready.
2. Carry out preparations for installation (see chapter "Pre-
paring for installation").
3. Ensure clean, undamaged sealing surfaces on the connec-
tion flanges.
4. Align flanges carefully before installing them.
5. Clamp the product centrally between the piping with
flanges.
6. Centre the gaskets.
7. Connect the valve flange and the piping flange using ap-
propriate sealing materials and matching bolting.
8. Use all flange holes.
9. Tighten the bolts diagonally.
10. Re-attach or reactivate all safety and protective devices.

10.6 After the installation

Diaphragms set in the course of time!
▶ Leakage
After disassembly/assembly of the product, check that
●
the bolts and nuts on the body are tight and retighten if
required.
Retighten the bolts and nuts at the very latest after the
●
first sterilization process.
● Re-attach or reactivate all safety and protective devices.
GEMÜ R690
NOTICE
NOTICE
11 Pneumatic connections

11.1 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 actu-
ator 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 me-
dium connectors (connector 2: open / connector 4: close).
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Connector 2
Control function 1
Connector 4
Connector 2
Control function 2 +3
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