Samson 3374 - Installing the Resistance Transmitters

EB 8331-3 EN 5-13
Installation
5.5.2 Installing the resistance
transmitters
An actuator board with the corresponding
resistance transmitters and gear wheels is re-
quiredforaresistancetransmitterretrot.
Which actuator board is to be used depends
on the actuator type designation as well as
thepowersupplyandtransittimespecica-
tions (see Annex).
The retrotting of the resistance transmitters
varies depending on whether the actuator is
tted with limit contacts or not.
− Actuators without limit contacts:
see instructions below.
− Actuators with limit contacts:
see page5-15.
Actuators without limit contacts
If the actuator does not have limit contacts,
anadditionalretrotkit(seeFig.5-10)isre-
quired.
1. Unscrew fastening screws. Slide the actu-
ator board (12) from its guiding to the
right. Slightly lift the board and continue
pushing it further towards the cable en-
try.
2. Clip the spindle gear (2) onto the sleeve
(13). Make sure the latch is properly en-
Note
gaged in the groove of the sleeve. Slide
the intermediate gear (1) onto the spin-
dle 1 (11.1), mount the serrated ring (3)
and push it down as far as it will go.
3. Place the tension spring (4) onto the spin-
dle 3 (11.3), ensuring that the long wire
of the tension spring rests on the interme-
diate gear (1) and that the short wire of
the spring is located between spindle 3
(11.3) and spindle 4 (11.4). Mount the
shim (10) on spindle 2 (11.2). Place the
serrated ring (6) and push it down as far
as it will go.
4. The resistance transmitter gears (22 and
23)ttedwithretainingringsmustbeput
onto their shafts to correspond with the
rated travel of the valve. The rated travel
inscription'A'for30mmratedtravelor
'B'for15mmratedtravelmustbelegi-
blefromabove(seeFig.5-16).
5. Slide the actuator board (12) into its
guiding. Make sure that the gears are
properly engaged. Fasten the board us-
ing screws.