Startup
7.2
Control air
NOTE
HINWEIS
Do not block the vent holes!
In versions with the FC/FO function, the vent hole protected by a transparent covering cap (1)
must not be damaged or blocked, as this would obstruct the movement of the actuator.
The control air connections are marked with labels (2) which indicate the action of the
control air at the connection concerned. In the above example, the control air connection (A)
opens, so this is a pneumatic actuator with FC function (spring closed).
Control air is supplied through the free control connection (A) (FC and FO function) or through
both control connections (A) and (B) (DA function).
NOTE
HINWEIS
Risk of limited functionality if control air connections are unsuitable
If the control air connections used are too long, the control air holes in the product can be
blocked.
When installing, make sure that the control air connections do not penetrate into the
product housing beyond the available thread in the hole!
8
Startup
Select a suitable control pressure, see Section 6 "Technical specifications", Page 41.
Check the ball valve and connections for leaktightness.
48
Instruction manual