Samson 3374-11 - Page 31

EB 8331-4 EN 31
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
Actuator stem
retracted
Actuator stem
extended
19 1920
Fig.10: Alignment of contact cam and cam holder
B
18 21 1
B
18 21 1
When actuator stem retracted
When actuator stem extended
Fig.11:Alignment of the contact cam unit
1 23
4
8
12
13
17 21
11
18
1 Intermediate gear
2 Spindle gear
3 Serrated ring
4 Tension spring
8 Spacer
11 Spindle
12 Actuator board
13 Bearing sleeve
17 Terminal board
18 Adjustment gear
21 Contact cam unit
Stateondelivery:
Spindle (11) with serrated
ring and shim
Fig.12:Installing the limit contacts