4.2 Mounting the actuator on the
valve
1. Turn the handwheel (Fig. 2) counter-
clockwise
only after disconnecting the
actuator from the power supply
to re-
tract the actuator stem as far as it will
go.
2. Place the actuator on the valve connec-
tion or the intermediate insulating piece
and secure with the coupling nut (tight-
ening torque 20 Nm).
4.3 Electrical connection
DANGER!
Risk of electric shock!
When installing electric cables, you are
required to observe the regulations
governing electrical power plant
installation according to
DIN VDE 0100 as well as the
regulations of your local power supply
company.
Use a suitable power supply which
guarantees that no dangerous voltages
reach the device in normal operation
or in case of a fault in the system or
any other system parts.
Connect the actuator to the electrical
network only after the power supply is
first switched off. Make sure the power
cannot be switched on unintentionally!
Especially when a 24 V voltage supply
is used, wires with sufficiently large
wire cross-sections must be used to
guarantee that the permissible voltage
tolerances of
±
10 % are not exceeded!
10
EB 5867 EN
Combination with Type 5857 Electric Actuator
Fig. 2 · Manual override of Type 5857
Handwheel
Travel
indicator
NOTICE
The handwheel is used to move the actuator
stem.
Only operate the handwheel when the
actuator is in the de-energized state.
In the version with digital positioner, do
not
op-
erate the handwheel while the actuator is in ser-
vice (absolute travel adjustment, see
EB 5857 EN), otherwise the feedback signal will
be shifted.
Содержание 3222 N
Страница 15: ...EB 5867 EN 15...
