Pneumatic Connection; Sizing Of The Connecting Line; Compressed Air Quality - Samson 3965 Mounting And Operating Instructions

5.2 Pneumatic connection

WARNING
!
Risk of injury due to high pressure inside
device.
Prior to work on the device, depressurize the
connecting lines.
The air connections are designed as thread-
ed holes with G and G ¼ thread.
1 /
8
Î Run and attach the connecting lines and
screw joints according to good profes-
sional practice.
Î Check the connecting lines and screw
joints for leaks and damage at regular
intervals and repair them, if necessary.
Î The K coefficient of an upstream pres-
VS
sure reducing valve must be at least 1.6
times larger than the K
the solenoid valve island.
Î Protect the exhaust air connections by
installing a filter or taking other
appropriate precautions to prevent water
or dirt from entering them.
EB 3965 EN
coefficient of
VS
5.2.1 Sizing of the connecting
line
Î Refer to the table below for the minimum
required nominal size of the connecting
lines. The specifications apply to a
connecting line shorter than 2 m. Use a
larger nominal size for lines longer than
2 m.
Connecting lines (<2 m)
Pilot supply 8
Connection
(see Fig. 3)
Outputs 3, 2, 4
G
Thread
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8
Pipe ≥6x1 mm
1)
Hose ≥4x1 mm
2)
Outside diameter x Wall thickness
1)
Inside diameter x Wall thickness
2)
5.2.2

Compressed air quality

DANGER
!
Risk of asphyxiation through displacement of
air on using nitrogen in unventilated spaces.
Discharge the exhaust air of the solenoid pi-
lot valve and poppet valve over a common
pipe to the atmosphere.
NOTICE
!
An operating pressure above the maximum
permissible operating pressure will damage
the solenoid valve island.
− Observe the max. operating pressure (see
technical data in section 3.2).
Mounting and start-up
Operating medi-
um 9
Exhaust air 5
G ¼
≥12x1 mm
≥9x3 mm
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