Customer Inquiries; Replacing The Seal - Samson 3277 Mounting And Operating Instructions

3 Replacing the diaphragm and ac-
tuator stem seal
3.1 Diaphragm
(Fig. 3)
1. Proceed as described in section 2.1 to
take the diaphragm plate (7) with dia-
phragm (8) and actuator stem (2) out of
the diaphragm case.
2. Remove the hose clamp and pull it
together with the diaphragm (8) off the
diaphragm plate (7) (not necessary with
Type 3277-5 as the diaphragm is held
in place by the metal plate (7.1)).
3. Stretch the new diaphragm onto the dia-
phragm plate. Insert the hose clamp
evenly into the groove intended for it
and tighten.
4. Reassemble actuator as described in
section 2.1.

3.2 Replacing the seal

1. Take the diaphragm plate (7) with the
actuator stem (2) out of the diaphragm
case as described in section 3.1.
2. Coat the new shaft seal with lubri-
cant/sealant (order no. 8152-0043)
and insert it.
3. If necessary, replace the dry bearing
(12.1) and wiper (13) with new ones as
well.
4. Reassemble the actuator as described in
section 2.1.
Replacing the diaphragm and actuator stem seal

4 Customer inquiries

Please indicate the following:
Type and product number
Effective diaphragm area
Bench range (signal pressure range) (in
bar)
Actuator version – operating direction
Dimensions
Refer to the Data Sheet T 8311 EN for
dimensions and weights of the actuator ver-
sions.
2
Fig. 7 ⋅ Actuator stem seal
12
12.1
13
11
EB 8311 EN