Actuator With Handwheel - Samson 3277 Mounting And Operating Instructions

Reversing the operating direction (fail-safe action)
tor stem only starts to retract when the signal
pressure overcomes the force of the springs.
9. Record the changed fail-safe action on
the nameplate!

2.1.2 Actuator with handwheel

Type 3277 (Fig. 5) only
1. Undo lock nut (20) and relieve the
springs (6) by turning the handwheel
(17).
2. Loosen threaded pin (26) and unscrew
coupling nut (25) from the coupling
(22).
3. Knock out the clamping sleeve (23) and
remove the ring (24).
4. Unthread the ring nut (15) and lift off the
flange part (21) together with the cou-
pling nut (25).
8
EB 8311 EN
Reversing the fail-safe action "Actuator
stem extends" to "Actuator stem retracts"
4
Proceed as described in section 2.1.1.
However, use the word "spindle with nut
(27)" in place of "nut (1)".
After reversing the operating direction:
1. Replace the flange part (21) with ring
nut (15) and coupling nut (25).
2. Tighten ring nut (15). Attach the ring
(24) with clamping sleeve (23).
3. Screw coupling nut (25) as far as it will
go onto the coupling (22) and secure
with threaded pins (26).
Reversing the fail-safe action "Actuator
stem retracts" to "Actuator stem extends"
4
Proceed as described in section 2.1.1.
However, use the word "spindle with nut
(27)" in place of "nut (1)".
After reversing the operating direction:
1. Replace the flange part (21) with ring
nut (15) and coupling nut (25).
2. Tighten ring nut (15). Attach the ring
(24) with clamping sleeve (23). Attach
the ring (24) with clamping sleeve (23).
3. Screw coupling nut (25) as far as it will
go onto the coupling (22) and secure
with threaded pins (26).