Samson 3277-5 - Page 55

EB 8310-1 EN 11-3
Removal
A27.3
A27.1
A27.2
84
A8
3
A2
A7
5
3 Yoke
5 Plug stem with plug
84 Travel indicator scale
A2 Bottom diaphragm
case
A7 Actuator stem
A8 Ring nut
A27.1 Stem connector nut
A27.2 Bearing sleeve (bot-
tom part of the stem
connector)
A27.3 Lock nut
Fig.11-2: Type3277 Pneumatic
Actuator on a
Type3510 Micro-ow
Valve
b) Type3510 Micro-ow Valve
1. Loosen the lock nut (A27.3).
2. In the "actuator stem extends" version:
to retract the actuator stem, apply a sig-
nal pressure corresponding to approx.
50%ofthebenchrangetotheactuator.
Use a suitable tool to hold the stem con-
nector nut (A27.1) and bearing sleeve
(A27.2) stationary and unscrew them.
Disconnect the signal pressure.
In the "actuator stem retracts" version:
use a suitable tool to hold the stem con-
nector nut (A27.1) and bearing sleeve
(A27.2) stationary and unscrew them.
3. Loosen the ring nut (A8).
4. Lift the actuator off the valve.
5. Loosely thread the lock nut (A27.3) and
stem connector nut (A27.1) on the actua-
tor.
The bearing sleeve (A27.2) remains on the
valve.
6. Fasten ring nut (A8) on the actuator.
Note