28
EB 8310-5 EN
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)
−
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).
A7
A4
A36
A33
A9
A35
A5
A17
A36
A33
A7
A17
A35
A4
A5
A34
A4
Diaphragm
A5
Diaphragm plate
A7
Actuator stem
A9
Nut
A17 O-ring
A33 Nut
A34 Slotted nut
A35 Compressor
A36 Spacer
Fig. 7:
Arrangement of parts for "stem retracts" direction of action (left: 175 cm²; right: 750 cm²)
Summary of Contents for 3277
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