Samson 3372 Mounting and operating instructions - 6.6 Mounting The Actuator
EB 8313-3 EN
33
Maintenance of Type 3372 (120 cm²)
6.6 Mounting the actuator
Fig. 15
6.6.1 Version with fail-safe
action „actuator stem
extends“ (FA)
Î
Clamp the bottom diaphragm case (2)
into a suitable appliance.
Î
Carefully insert the ready-assembled dia-
phragm plate assembly through the radi-
al shaft seal (40) into the plain bearing
(42) of the diaphragm case (2). Take
care not to damage the radial shaft seal
(40).
Î
Align the diaphragm (4) to the holes in
the diaphragm case.
Î
Place the springs (10) on the diaphragm
plate, centering them in the intended re-
cesses.
Î
Place on the top diaphragm case (1) and
align its holes.
Version with travel stop or manual override
Î
Carefully place the top diaphragm case
(1) with travel stop/manual overrideon-
to the actuator stem extension. Take care
not to damage the radial shaft seal (40).
Proceed as described in section 6.6.3.
6.6.2 Version with fail-safe
action „actuator stem
retracts“ (FE)
Î
Clamp the top diaphragm case (1) into a
suitable appliance. This ensures that the
position of the springs (10) remains un-
changed during assembly.
Î
Place the ready-assembled diaphragm
plate assembly together with diaphragm
plate in the top diaphragm case (1).
Version with travel stop or manual override
Î
Carefully insert the actuator stem exten-
sion through the radial shaft seal of the
diaphragm case. Take care not to dam-
age the radial shaft seal (40).
Î
Place the springs (10) on the diaphragm
plate, centering them in the intended re-
cesses.
Î
Carefully push the bottom diaphragm
case (2) together with the radial shaft
seal and plain bearing over the actuator
stem. Take care not to damage the radial
shaft seal (40) and wiper ring (41).
Proceed as described in section 6.6.3
6.6.3 Assembling the dia-
phragm cases
Î
Align the diaphragm and diaphragm
case so that their holes are located over
each other. If you marked the diaphragm
cases before dismantling the actuator,
you can re-establish where the pneumat-
ic connections were located.