– If required, are additional accessories al-
ready installed in the actuator?
– Does the operating voltage to be connected
match that of the actuator?
– Does the data on the name plate match the
motor data?
– Does the adjusted travel of the actuator or
the travel to be adjusted also match the
valve travel?
Procedure
– Insert plug stem (5) into the valve as far as it
will go.
– Move actuator stem (1) to mid-position (see
"4.4 Manual operation").
– Place actuator (8) on the valve bonnet and
secure with ring nut (7) (allow to fall over the
stem when placing).
– Push plug stem (5) up, connect coupling nut
(3) and actuator stem (1) via the coupling
halves (2) and tighten with screws.
– Move actuator stem (1) to the final position
by turning the handwheel clockwise.
– Align travel indicator scale (6) with the tip of
the coupling (2) and screw tight.
– Tighten the plug stem (5) with the lock nut
(4) against the coupling nut (3).
The linear actuator can be attached similarly
to other final control elements, e. g. butterfly
valves with attached pedestal.
!
8
7
1
2
3
4
5
9
6
1
Actuator s tem
2
Coupling
3
Coupling nut
4
Lock nut
5
Plug s tem
6
Travel indicator scale
7
Ring nut
8
Actuator
9
Yoke
Fig. 7
⋅
Assembly (detail)
CAUTION!
Do not press valve plug or final control
element onto the seat and turn.
This could cause the final control ele-
ment and the actuator to be damaged.
)