Direct Attachment To Type 3277 And Type 3277-5 Actuators - Samson 4749 Mounting And Operating Instructions

Installation
5.3 Direct attachment to
Type 3277 and
Type 3277-5 Actuators
Î See Fig. 5-2 and Fig. 5-3
Î Required mounting parts and accesso-
ries:
see section 5.8.
1. Place follower clamp (4) on the actuator
stem, align it and screw tight so that the
fastening screw (3) is located in the
groove of the actuator stem.
2. Fasten the mounting plate (1) onto the
actuator yoke using both fastening
screws (2).
3. Check the pin position of the follower pin
(2) on the lever (1). Refer to travel tables
for type of attachment. If necessary,
change the pin position (see sec-
tion 5.2.1).
4. Screw the stop screw into the housing
cover and unscrew the cover.
5. Place the position transmitter on the
mounting plate so that the follower pin
rests on the top of the follower clamp (4):
Î Adjust the lever correspondingly and
insert a thin screwdriver into the hole to
lock the shaft in place. Keep the
screwdriver in the hole to lock in
position.
6. The lever must rest on the follower clamp
with spring force. Fasten the position
transmitter onto the actuator yoke using
the four fastening screws (5).
7. Mount cover (6) on the other side. Make
sure that the vent plug faces downward
5-4
(in cases where this is not possible,
mount it in the horizontal position) when
the control valve is installed to allow any
condensed water that collects to drain
off.
8. For Type 3277 Linear Actuators with "ac-
tuator stem retracts" fail-safe action,
screw a vent plug (7) into the connection
at the side of the yoke.
9. Mount the enclosure cover. Check the
O-ring for damage and replace it, if nec-
essary.
10. Lock the enclosure cover by unscrewing
the stop screw.
Shaft locking
Stop screw (cover)
Fig. 5-2: Shaft locking and fastening cover
EB 4749 EN