Intermediate Switches
Manual Operation
Top Bevel Gear Set
Space Heater
Control Equipment
Intermediate Switches
Top Bevel Gear Set
Volts, AC
Resistance
ohms
Rating
Watts
230
5K
10 20 10 20
2.7K 1.2K 0.6K
230 110 110
Technical Data
With this limit switching, additional switching
points can be set for each direction of rotation.
The switching can be set between 25 and 75%
of valve travel in each direction. The switch
sub assembly consisting of 2 or 4 cam switches
is mounted on output shaft of RGU. Each
micro switch has 1 NO + 1 NC contact.
For commissioning or in an emergency when
there is no power supply, actuator can be
operated by hand wheel. The manual drive is
engaged by means of a lever. When motor
starts running, the manual drive gets
disengaged immediately & hand wheel does
In manual operation, hammer blow can be
effected with hand wheel. The hammer blow
makes it possible to open a jammed or rarely
operated valve.
not rotate during power operation.
Manual effort on hand wheel can be further
reduced by using a side mounted hand wheel
instead of standard hand wheel. Reduction
SA3 / 6 / 12 / 15
SA25 / 30 / 50 / 60
SA 100
2 : 1
3 : 1
4 : 1
Instead of hand wheel, a chain pulley can be
provided for actuators mounted in inaccessible
zones.
ratios available are
Condensation in the actuator is possible due to
wide fluctuation of the ambient temperature.
The heater integrated in the control unit
prevents the water condensation. The heater is
rated for continuous duty. This may be
continuously energized or when the actuator
is not operating.
13
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