16
Fluid installation
8.2. installing the process valve
Thread type and dimensions can be found in the corresponding data
sheet.
→
Connect the valve according to the operating instructions for the
valve.
8.3. pneumatic connection of the control
head
Danger!
risk of injury from high pressure!
• Before dismounting pneumatic lines and valves, turn off the
pressure and vent the lines.
procedure:
→
Connect the control medium to the pilot air port (1)
(3 – 7 bar; instrument air, free of oil, water and dust).
→
Attach the exhaust airline or a silencer to the exhaust air port (3)
(see “Fig. 9: Pneumatic connection”).
Keep the adjacent supply pressure
always
at least 0.5 –
1 bar above the pressure which is required to move the
actuator to its end position.
Important information for the problem-free functioning of
the device:
• The installation must not cause back pressure to build up.
• Select a hose for the connection with an adequate
cross-section.
• The exhaust air line must be designed in such a way that
no water or other liquid can get into the device through
the exhaust air port.
Exhaust air port
(label: 3)
Pilot air port
(label: 1)
Fig. 9:
Pneumatic connection
Caution:
(Exhaust air concept)
:
In compliance with protection class IP67, an exhaust air line
must be installed in the dry area.
english
Type 8691
