How do I install the Siemens ASC77.2U OpenAir External Auxiliary Switch on a damper actuator?

[LeMariana]

To successfully install the Siemens ASC77.2U OpenAir External Auxiliary Switch on your damper actuator, follow these steps. First, ensure safety by removing power from the damper actuator. If dealing with a new actuator, address any preload: for non-spring return actuators, remove the factory-installed preload as per instructions. For new spring return actuators, use a hex wrench to wind the manual override to remove the preload. Next, prepare the actuator shaft adapter by removing the position indicator and aligning the EAS position adapter ring over the raised stubs. Prepare the EAS itself by inserting the plastic inserts into the mounting holes and mounting the position indicator on the face. Mount the external auxiliary switch to the actuator, nesting the alignment peg of the EAS position adapter ring into the actuator's notch and securing it with the provided M5×25 screws. With the actuator fully closed (0°), use a Phillips screwdriver to set the switches to your desired positions. Wire the switches according to the provided wiring designation and color codes. Finally, double-check that the EAS is securely installed without shifting and that there's no load on the actuator when setting the auxiliary switches. For detailed guidance, consult the Siemens ASC77.2U OpenAir manual, or contact Siemens Industry, Inc., for any specific issues.