Basic Documentation

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Siemens Rotary actuators with spring return GCA…1 CE1Z4613en
Building Technologies Mounting notes 2017-05-26
5 Mounting notes
All information and steps to properly prepare and mount the actuator are available in
the mounting instructions 4 319 2615 0 (M4613) delivered with the actuator. The shaft
adapter as well as all other individual parts are not premounted, as the actuator
components are put together differently depending on either clockwise or counter-
clockwise rotation of the damper shaft and damper shaft length. Refer to section 2.5
Mechanical design.
Choose the actuator's mounting position so that you can easily access the cables as
well as the setting elements on the front of the actuator. Refer to section 11.1
"Dimensions".
For mounting, turn the actuator by 180° depending on the necessary rotary direction.
All setting and operating elements are available on both sides of the actuator,
depending on clockwise or counter-clockwise rotation.
To satisfy the IP54 protection class requirements, the following conditions must be
fulfilled:
∂ The actuators are equipped only for vertical mounting (cable entries at bottom) with
air dampers having a horizontal shaft.
∂ The actuator mounted on the damper shaft may be mounted by max. +/– 45° to the
vertical line:
∂ Use the weather shield ASK75.1 for any mounting position.
The mounting bracket (see dimensions) is required for mounting on the damper shaft.
The insertion depth for the bolt into the housing must be sufficient and guaranteed.
The actuator comes with a factory-set spring preload of 5° which ensures a tight close-
off for the air dampers.
Manual adjustment of the shaft adapter via hex wrench and gear train locking as per
the mounting instructions.
To ensure a tight close-off function for the dampers and the exact switching position for
switches A and B, the actuator can only be adjusted with a mounted shaft adapter
and position indicator in accordance with the mounting instructions.
If necessary, you can limit the angular rotation angle at increments of 5° for the entire
span by positioning the shaft adapter in the respective position.
Refer to chapter 8 "Technical data" for information on minimum length and diameter of
the damper shafts.
Mount the mounting sets for converting a rotary movement to linear movement (section
2.2 Type summary) as per the separate mounting instructions.
When mounting two actuators on the same damper shaft (for GCA12..1, 32..1, 13..1),
use the ASK73.1 bracket.
When mounting two actuators type GCA16..1 on the same damper shaft, use the self-
aligning bracket ASK73.2.
Mounting instructions
Mounting position
Mounting position in
dependence of rotary
direction
Device protection
Mounting bracket
Spring preload
Manual adjustment
Mechanical limitation of
angular rotation
Damper shafts
Use of rotary/linear sets
Tandem (powerpack)
mounting