User Manual

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Siemens Actuators for fire and smoke protection dampers GRA126.1E/.., GRA326.1E/.. A6V10888424en
Building Technologies 2016-12-05
For information on minimum length and diameter of the damper shaft, refer to
"Technical data".
The actuator is supplied with a 5° spring preload to ensure a certain closing pressure
for the air damper.
If required, the angle of rotation can be limited in increments of 5° for the entire
correcting span by placing the shaft adapter in the respective position.
The temperature monitoring unit is to be fitted to the duct wall or the damper housing
using 2 self-tapping screws of 3.5 mm diameter.
The enclosed drilling template facilitates mounting. When mounting, it must be ensured
that the thermal fuse is fully exposed to the airflow.
Commissioning notes
All information required for commissioning is contained in the following pieces of
documentation:
• The present Data Sheet A6V10888424
• Mounting Instructions A6V10890425
• Plant diagram
• Check to ensure that all permissible values as specified in "Technical data" are
observed
• Check for proper mounting to ensure that all mechanical settings are in accordance
with plant-specific requirements. In addition, ensure that the air dampers are shut
tight when in the fully closed position
• Fasten the actuator securely to avoid side load
• Check the direction of rotation by turning the gearing with a hex wrench in
accordance with the Mounting Instructions
• Check to ensure that the cables are connected in accordance with the plant wiring
diagram
• Operating voltage AC 24 V / DC 24…48 V (SELV / PELV) or AC 230 V must be
within the tolerance
• Auxiliary switches "A" and "B" change over when the actuator reaches the respective
positions
Functional check on site:
Press the button to simulate overtemperature. This simulates the response of the fuse,
enabling you to check the proper functioning of the actuator.
In plant equipped with a fire alarm device BAM, fire alarm will be triggered. Appropriate
measures must be taken before the functional check is made.
Disposal
The device is considered an electronics device for disposal in terms of
European Directive 2012/19/EU and may not be disposed of as domestic
garbage.
● Dispose of the device through channels provided for this purpose.
● Comply with all local and currently applicable laws and
regulations.
Damper shafts
Spring preload
Mechanical limitation of
the rotational angle
Temperature
monitoring unit
References
Environmental conditions
Mechanical check
Electrical check
Temperature
monitoring unit