Data Sheet for Product

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Siemens Electrothermal actuators STA..3.., STP..3.. CE1N4884en
Smart Infrastructure 2020-04-16
Mounting and installation notes
Mounting instructions are included in the packaging.
Actuators STA.. or STP.. are supplied as separate units. They can be assembled
with just a few movements prior to commissioning:
· Remove the protective cover from the valve body
· Insert the sliding sleeve, bayonet-nut, on the valve and manually tighten
· Put actuator in position and manually tighten (clockwise) the bayonet-ring until a
second click
· STA../00, STP../00: Plug in the connecting cable
· Connect to operating voltage only after mounting
Hints for the dismounting:
· Interrupt the power supply and disconnect the connection cable
· Wait for 6 min. until the actuator is cooled down
· Turn the sliding sleeve, bayonet-ring, counter clockwise to the end-position
At dismounting the actuator will be set automatically to the original position (factory
setting).
Seldom may happen that the actuator will be released from the valve together with
the valve whereby the bayonet-nut stuck in the actuator. In order to re-use the
actuator, the actuator’s stem has to be re-set to the original position (factory
setting). For this purpose, turn the actuator up-side-down and push back the stem
with simultaneous counter clock wise turning of the sliding sleeve, bayonet-ring,
until latching.
Do not use pipe wrenches, spanners or similar!
Actuators may be installed in all positions (IP54 standard guaranteed).
IP54
360°
· Comply with all local regulations when installing.
· Connect the connecting cable downward and away from the bottom.
· Provide for a means to isolate from mains power/connecting voltage, e.g. by
connecting an automatic circuit breaker or switch fuse upstream of the control
unit.
Mounting on valve
Warning
Mounting positions
Notes on
electrical installation