Siemens ASC77.2U - Manual (Page 3)

Document No. 129-420
Installation Instructions
December 13, 2004
Short shaft applications
NOTE: The short shaft adapter is included in
the packing box with the shaft adapter.
With the short shaft adapter in place, align the
notch of the EAS over the protruding tab on the
position adapter ring and secure in place.
(See Figure 7).
Short Shaft
Adapter
EA1
178R1
Figure 7. Attaching EAS to GCA/GIB/GBB Shaft Adapter.
Preparing the EAS for Mounting
2. On the back of the EAS, push the plastic inserts into
the mounting holes. (See Figure 8 and Figure 9).
3. Mount the position indicator on the face of the EAS
(See Figure 8 step 2 and Figure 9, step 2).
EA1
182R1
b
f
Figure 8. For GMA/GEB Actuators, Use Top Screw Holes.
f
EA1
181R1
b
2
1
Figure 9. For GCA, GBB, GIB Actuators, Use the Bottom
Screw Holes.
Mounting External Auxiliary Switch to
Actuator
1. Nest the alignment peg of the EAS position adapter
ring into the notch (See Figure 10).
The EAS lies flush against the face of the actuator.
EA1
183R1
9.5 ± 1.5 lb-in (1.1 Nm ± 0.2)
Note: GMA/GEB
actuators use top
screw holes, GCA,
GBB/GIB models
use bottom screw
holes.
2
Figure 10. Bringing the EAS and the Actuator together.
1
2. Secure the EAS in place with the M5×25 screws
provided. (See Figure 10).
CAUTION:
The EAS should not shift when it is
correctly installed firmly against the face
of the actuator.
The installation is complete.
Siemens Building Technologies, Inc. Page 3 of 5