Samson 3761, Монтаж и эксплуатация

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Aligning the cam disc:
Important!
Close the control valve before aligning the
cam disc as illustrated in Figs. 5 and 6.
For actuators with fail-safe action "valve
OPEN" without supply pressure and for
springless actuators, apply the max. signal
pressure to the actuator before aligning the
cam disc so that the valve is moved to closed
position.
4
Slightly loosen clamping screw (3.1,
Fig. 4) so that the cam disc can be ro-
tated together with the positioner shaft.
4
Turn cam disc with the selected cam (
A
or B ) so that the fulcrum of the cam disc,
the marking point and the black pin form
a line (Figs. 5 and 6).
4
Hold cam disc in place and tighten
clamping screw (3.1).
To flip the cam disc over, insert an Allen key
into the positioner shaft to hold it stationary.
Loosen the fastening nut and remove the
cam disc.
Turn the cam disc over and remount it.
The default setup is shown in the top left of
Figs. 5 and 6 (valve closed in fail-safe posi-
tion, opens counterclockwise and closes
clockwise).
3 Connections
3.1 Pneumatic connections
Depending on the cover plate, the pneu-
matic connections are either ¼-18 NPT or
ISO 228/1- G ¼ tapped holes.
The supply input (Supply 9) is fitted with a
sintered metal filter (order no. 1400-6897).
The other connections are fitted with filters
(order no. 0550-0213) to prevent dirt from
collecting in the device. Remove the cover
plate to clean or replace the filters, if neces-
sary.
Commonly available male connections for
metal and copper pipes or plastic hoses can
be used for connection.
Caution!
The supply air must be dry and free of oil or
dust. Always observe the maintenance in-
structions of upstream pressure reducing sta-
tions. Thoroughly purge all pneumatic lines
before connecting them.
Important!
Adjust the supply pressure to 0.2 bar above
the upper bench range value of the actuator
(see nameplate).
EB 8386 EN
13
Connections