Samson 3374-10 Mounting And Operating Instructions page 30

Additional functions
1. Undo screws on housing cover and take
the cover off the actuator.
2. Move the actuator stem to the end position
depending on the fail-safe action "actua-
tor stem extends" or "actuator stem re-
tracts" (see section 3.3).
3. Remove serrated ring and shim from spin-
dle (11).
4. Slide adjustment gears (18) onto their
spindles and fasten with one screw (16)
each. Check whether the adjustment gears
can be turned easily. If not, slightly loosen
its screw again.
5. Turn contact cams (19) on the cam holder
(20) as illustrated in Fig. 10 correspond-
ing with the position of the actuator stem.
6. Slide the spacer (8) onto the spindle (11).
Make sure that the long wire of the tension
spring rests on the spacer and on the in-
termediate gear.
7. Slide the contact cam unit (21) onto the
spindle corresponding with the position of
the actuator stem as illustrated in Fig. 11.
Make sure that the outermost cog of the
contact cam unit engages in the gear-
wheel of the intermediate gear (1). In ad-
dition, the adjustment gears (18) must en-
gage properly in the corresponding gears
of the contact cam unit (21).
8. Secure the contact cam unit (21) and in-
termediate gear (1) with the serrated ring
(3); push down the serrated ring as far as
it will go.
9. Position the terminal board (17) at the
base of the support at a 45° angle (ap-
prox.) with the switches pointing towards
30
the gears. Swivel the upper end of the ter-
minal board towards the gears until the
board is in a vertical position and proper-
ly engaged in the support.
10. Adjust limit contacts as described in sec-
tion 6.1.2.
19
Actuator stem
retracted
Fig. 10: Alignment of contact cam and cam holder
18 21
When actuator stem retracted
18
When actuator stem extended
Fig. 11: Alignment of the contact cam unit
20 19
Actuator stem
extended
1
21 1
EB 8331-4 EN