Samsomatic 3962 Series, Монтаж и эксплуатация

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Pneumatic connections
2 Pneumatic connections
2.1 General
Make sure the connecting lines and screw
fittings are routed and installed properly.
Check them for leaks or damage at regular
intervals and replace or repair them, if ne-
cessary. Before starting any repair work, re-
lieve the pressure from the connecting lines
to be opened.
Depending on the solenoid valve version,
the pneumatic connections are established
using either G ¼/¼ NPT or G ½/½ NPT
threaded bores. Install filters or other suit-
able accessories to prevent water or dirt
from getting inside the housing through the
exhaust air connections.
Note! The K
VS
coefficient of an upstream
supply pressure regulator must be at least
1.6 times higher than the K
VS
coefficient of
the solenoid valve.
2.2 Connecting line
Refer to the following table for the minimum
required pipe sizes for the connecting lines:
Nominal size (connection length
≤
2 m)
K
VS
1.4 4.3 –
Connection
Pressure 1 and 3 4 9
≥
1.4 bar
≥
DN 8
≥
DN 10
≥
DN 4
≥
2.5 bar
≥
DN 6
≥
DN 8
≥
6 bar
≥
DN 4
≥
DN 6
Note! Use a larger nominal size for a con-
nection length of more than 2 m.
2.3 Operating medium for the
booster valve
With internal auxiliary air routing:
Instrument air free of corrosive contents or
nitrogen at 1.4 to 8 bar.
With external auxiliary air routing through
connection 9:
Instrument air free of corrosive contents, oil
or non-corrosive gases at 0 to 10 bar with
K
VS
coefficients between 1.4 and 4.3, supply
air fed through connection 4.
2.4 Auxiliary air for the pilot
valve
Instrument air free of corrosive contents at
1.4 to 8 bar.
Compressed air quality acc. to DIN ISO 8573-1
Particle size
and quantity Pressure dew point Oil contents
Class 4 Class 3 Class 3
≤
5 µm and
1000/m³
–20 °C or at least
10 K below the
lowest ambient
temperature to be
expected
≤
1 mg/m³
Note on using nitrogen
If the solenoid valves are mounted in
closed, non-ventilated rooms, make
sure the pilot and booster valves' ex-
haust air is collected in a manifold
line and routed to the atmosphere.
6
EB 3962-1 EN