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Mounting and start-up
− If necessary, use a pressure reducer to re-
strict the operating pressure.
NOTICE
!
Risk of malfunction due to failure to comply
with required air quality.
− Only use supply air that is dry and free of
oil and dust.
− Read the maintenance instructions for up-
stream pressure reducing stations.
− Blow through all air pipes and hoses thor-
oughly before connecting them.
Pilot supply
With external pilot supply over port 8 (with-
out pressure reducer):
− Instrument air (free from corrosive sub-
stances) or nitrogen
− Pressure 2.2 bar ±10 %
With internal pilot supply over port 9 (with
pressure reducer):
− Instrument air (free from corrosive sub-
stances) or nitrogen
− Pressure 2.2 to 6.0 bar
Operating medium
With external pilot supply over port 8 (with-
out pressure reducer):
− Instrument air (free from corrosive sub-
stances), air containing oil or non-corro-
sive gases
− Pressure max. 6.0 bar
With internal pilot supply over port 9 (with
pressure reducer):
32
− Instrument air (free from corrosive sub-
stances) or nitrogen
− Pressure 2.2 to 6.0 bar
Compressed air quality according to
ISO 8573-1
Particle size
Oil
and quantity
content
Class 4
Class 3
≤5 µm and
≤1 mg/m³
1000/m³
5.2.3
Connections for pilot
supply and operating
medium
A strainer with 100 µm mesh size is installed
in port 8 (external pilot supply without pres-
sure reducer) and in port 9 (operating medi-
um) of the pneumatic connection module to
prevent dirt particles from entering.
The strainer must be cleaned or replaced
when it is blocked (see Fig. 8).
1. Unscrew the male connector (1) with seal
(2) out of the port.
2. Unscrew the strainer (3) with a screw-
driver (7 to 9 mm blade) out of the port.
3. Clean the strainer (3) or renew it and
screw it back into the port.
4. Screw the male connector (1) with seal
(2) back into the port.
Pressure dew point
Class 3
–20 °C or at
least 10 K below
the lowest
ambient
temperature to
be expected
EB 3965 EN
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