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Installation
4. Position the clamps of the stem connector
(5) included in the accessories on the
ends of the actuator stem and plug stem
and screw tight.
5.4.3
TROVIS 5725-3 (force-
locking attachment)
Actuators with fail-safe action
The actuator stem must be retracted before
the actuator can be mounted onto the valve.
The stem can be retracted either mechanical-
ly or electrically. Both methods are described
below.
Retracting the actuator stem mechanically
1. Unscrew front cover and place a 4 mm
Allen key on the red actuating shaft.
2. Retract the actuator stem: turn Allen key
counterclockwise and only as far as the
top end position which is at the point
where the torque-dependent limit switch
is activated.
3. Hold Allen key in place and fasten valve
and actuator together using the coupling
nut.
Tightening torque
Remove Allen key and carefully refasten
the front cover.
Retracting the actuator stem electrically
1. Unscrew front cover.
2. Connect the wiring as shown in sec-
tion 5.7.
3. Switch on supply voltage and connect
the actuator at the RJ12 port to the com-
puter.
5-4
4. Retract the actuator stem in manual level
in TROVIS-VIEW. Fasten valve and actu-
ator together using the coupling nut.
Tightening torque
5.4.4
Î Install as described in section 5.4.2.
5.5 Installing the control valve
into the pipeline
NOTICE
!
Degree of protection not achieved due to
incorrect mounting position.
Î Install the control valve according to
section 5.1.
Î Install the valve into the pipeline accord-
ing the specifications in the mounting
and operating instructions of the valve.
NOTICE
!
Risk of actuator damage due to direct
contact with steam.
20 Nm
Î During mounting, make sure that the ac-
tuator cannot come into contact with any
steam.
TROVIS 5725-3 (form-fit
attachment)
20 Nm
EB 5724 EN
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