3. Installation
3−8
Festo P.BE−MPA−EN en 0910d
Note
When exhausting large−volume actuators or if the exhaust
performance is too small, back pressures can build up in
the valve terminal exhaust ducts. The back pressures can
lead to pneumatic actuation of other valves, especially
with unswitched 3/2−way valves that are closed in the
normal position.
To avoid back pressures:
Optimize the exhaust capacity of the valve terminal,
e.g.by using additional pneumatic air supply plates.
If necessary, separate the exhaust ducts using the
separating seal with ident. code: R (ducts (3) and (5)
locked, see Tab.1/8).
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