Samson 3277 Mounting And Operating Instructions page 28

Operation
5. Pull the diaphragm plate assembly con-
sisting of the actuator stem (A7), dia-
phragm plate (A5), and diaphragm (A4)
out of the bottom diaphragm case (A2).
6. Clamp the bottom section of the actuator
stem (A7) into a vise using protective
jaws. Make sure that the actuator stem is
not damaged.
7. Unscrew and remove the nut (A33).
8. Remove the parts from the actuator stem
(A7) in the specified order:
− Spacer (A36)
− O-ring (A17)
− Diaphragm plate (A5)
− Diaphragm (A4)
− Compressor (A35)
9. Place the parts on the actuator stem in
the reverse order as follows:
− Spacer (A36)
− O-ring (A17)
− Diaphragm plate (A5)
A33
A35
A17
A36 A9
A4 Diaphragm
A5 Diaphragm plate
A7 Actuator stem
Fig. 7: Arrangement of parts for "stem retracts" direction of action (left: 175 cm²; right: 750 cm²)
28
A7 A5 A4
A9 Nut
A17 O-ring
A33 Nut
− Diaphragm (A4)
− Compressor (A35)
Make sure that the seal lip of the dia-
phragm (A4) is inserted correctly be-
tween compressor (A35) and diaphragm
plate (A5).
To prevent the O-ring from being dam-
aged, use a suitable tool to slide the
O-ring onto the actuator stem and to po-
sition it correctly.
10. Screw the nut (A33) against the com-
pressor (A35). On tightening against the
glued hexagon nut (with 175 cm²) or on-
to the slotted nut (with 750 cm²), use a
suitable tool to hold it stationary. Ob-
serve tightening torques. Make sure that
the diaphragm does not turn.
11. Apply a suitable lubricant to the actuator
stem (A7).
A33
A5
A35
A17 A34 A7
A34
A35
A36
A36 A4
Slotted nut
Compressor
Spacer
EB 8310-5 EN