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Pneumatic Installation
9.2.1.
Pneumatic connection (standard)
Procedure:
→
If required, realign the control head (see Chapter "7.2.3. Realignment of the control head")
→
A silencer has already been mounted on the exhaust air connection (3/R) in the supplied state. As needed,
the silencer can be replaced by an exhaust air hose (e.g. after screwing in an appropriate plug-in hose
connectors).
→
Connect the required working connections 2/A1 to 2/A3 (each according to model) with the corresponding
connections on the process valve.
→
Connect the supply line to supply pressure connection 1/P (2.5 … 8 bar).
NOTE!
Hose pipes!
• Only use calibrated hose pipes with
∅
6 mm (or 1/4") or respectively
∅
8 mm (or 5/16") outer diameter (tol-
0.05 / -0.1 mm).
• Only use a suitable hose cutter when cutting hose pipes. This will safeguard against damage and impermissible
deformation.
• Accordingly dimension hose length to prevent that the hose ends in the plug-in hose connectors generate any
diagonally pulling stresses (curved outlet without eccentric stress).
• Only use suitable hose qualities (in particular for high ambient temperatures) that bear up under common
stresses caused by the quick connector.
Silencer or exhaust air hose!
• When using an exhaust air hose, accordingly dimension its length to ensure that a QNn value > 620 l/min is
reached.
Tip:
Dimension the hose lengths so that the control head can be removed from the process valve if required
without any additional disassembly work.
9.2.2.
Retrofitting in case of intensive external cleaning
In the case of very frequent intensive external cleaning, moisture, water or cleaning agents can enter the actuators
of the process valves through the ventilation plug of the spring chamber. This can lead to malfunctions or failure
of the actuator in the long term.
That can be prevented by venting the spring chamber via the control head.
For this purpose, a free valve seat in the control head will be equipped with a special cover plate (with an inside
connection from "A" to "R") so that the process valve can be connected to the corresponding working connection
2/AX of the control head.
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