Samson 3768, Mounting And Operating Instructions

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16 EB 8356 EN
Attachment to the valve
2. Fasten the intermediate piece (34) to the
actuator housing using two screws.
For the version with solenoid valve, align
the intermediate piece so that the air
connections of the limit switch point to-
ward the diaphragm case side.
3. Align the cam disk and scale as de-
scribed in section 3 and fasten.
4. Screw the vent plug (or filter check valve
from the accessories) into the intermedi-
ate piece.
Actuators according to VDI/VDE 3845
1. Place the assembled intermediate piece
(34, 44, 45, and 42) onto the mounting
bracket included in the scope of actuator
delivery and fasten (attachment accord-
ing to VDI/VDE 3845, September 2010,
fixing level 2).
2. Align the cam disk (40) and scale as de -
scribed in section 3 and fasten.
3. Screw the vent plug (or filter check valve
from the accessories) into the intermedi-
ate piece.
3.3.3 Aligning the cam disk
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Refer to Fig. 6
The following applies on aligning the cam
disk:
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The cam disk alignment depends on the
valve's direction of rotation, i.e. whether
it opens clockwise or counterclockwise.
Î
The cam disk must be set when the valve
is closed.
Î
Align the starting point (hole) of the cam
so that the fulcrum of the cam disk and
0° position on the scale as well as the ar -
row on the window are in line with each
other.
Î
When aligning the cam disk, clip the
double-sided scale disk on the cam disk,
while making sure that the value on the
scale matches the valve's direction of ro-
tation.
Securing the aligned cam disk
To prevent the cam disk from turning, pro-
ceed as follows:
Î
Drill a hole into the adapter (36) or cou -
pling (44) to allow a 2 mm dowel pin to
be inserted.
Î
Select one of the four holes located
around the center hole of the cam disk to
secure the cam disk in position.
90˚
60˚
30˚
0˚
0˚
90˚
60˚
30˚
Feeler roll
Starting point Starting point
Insert clip and press
the flaps outwards
Valve opens in counterclockwise direction Valve closes in clockwise direction
Fig. 6: Aligning the cam disk