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14
EB 5757 EN
Design and principle of operation
−
Wire breakage at current input
On
Off
5.5
11
Time [s]
−
Flow rate at water flow sensor exceeds
measuring range
On
Off
6.5
13
Time [s]
3.1.2 Handwheel
The valve can be moved to any position in
the
de-energized
state by the handwheel (2,
3.1.3 Travel indicator
Travel and direction of action can be read
off the travel indicator (5, Fig. 1) on the side
of the actuator housing.
3.2 Accessories
Accessories for communication:
The TROVIS-VIEW software for revi-
sion 2 of the TROVIS 5757-3 Electric Ac
-
tuator with Process Controller is required.
The TROVIS-VIEW software can be down-
loaded free of charge from our website
(
u
www.samson.de at Services > Software
> TROVIS-VIEW). The software can also be
supplied on a CD-ROM. Further details can
be found in Data Sheet
u
Accessories for domestic hot water heating
in instantaneous heating systems:
−
Type 5207-0060 Temperature Sensor
(fast-response Pt 1000 sensor)
−
Sensor pocket
To provide the best positioning of the
Pt 1000 sensor at the heat exchanger,
order no. 1400-9249
−
Water flow sensor
Axial turbine flowmeter, order no. 1400-
9246
−
Flow switch
To recognize when hot water is being
tapped using an NO contact