Mounting And Start-Up; Mounting The Actuator Onto The Valve; Installing The Control Valve Into The Pipeline; Electrical Connections - Samson TROVIS 5757-7 Mounting And Operating Instructions

5 Mounting and start-up

NOTICE
!
Risk of malfunction due to incorrectly per-
formed start-up.
Perform start-up following the described
sequence.
5.1 Mounting the actuator onto
the valve
NOTICE
!
Risk of actuator damage due to excessively
high tightening torques.
Observe the specified tightening torques.
The actuator has a force-locking connection
to the valve in de-energized state.
Î Turn the handwheel (2, Fig. 1 on
page 11) counterclockwise to retract
the actuator stem as far as it will go.
Î Place the actuator on the valve con-
nection and tighten the coupling nut
(Fig. 1 on page 11) (tightening torque
20 Nm).
5.2 Installing the control valve
into the pipeline
NOTICE
!
Degree of protection not achieved due to in-
correct mounting position.
Do not install the valve with the actuator
suspended downwards.
EB 5757-7 EN
Î Install the valve into the pipeline accord-
ing the specifications in the mounting
and operating instructions of the valve.

5.3 Electrical connections

DANGER
!
Risk of electric shock.
− Upon installation of the electric cables, you
are required to observe the regulations
concerning low-voltage installations ac-
cording to DIN VDE 0100 as well as the
regulations of your local power supplier.
− Use a suitable power supply which guar-
antees that no dangerous voltages reach
the device in normal operation or in the
event of a fault in the system or any other
system parts.
− Connect the actuator to the electrical net-
work only after the power supply is first
switched off. Make sure the power cannot
be switched on unintentionally.
− The switching output L' is live. Do not touch
the switching output L'.
The actuator requires a Pt 1000 temperature
sensor (e.g. Type 5267-2) to be connected to
measure the flow temperature.
Depending on the control task, an outdoor
sensor (e.g. Type 5227-2) or room panel
(Type 5257-7 only) can be connected. They
can all be combined with a return flow sen-
sor (e.g. Type 5267-2).
Additionally, the actuator has a potentiome-
ter input 1000 to 1100 Ω (e.g. Type 5257-
7) or 1000 to 2000 Ω. This input is used to
correct the room set point (±5 K) in case of
Mounting and start-up
19