User Manual

CE1N4618en
23.04.2003
Siemens Building Technologies
HVAC Products
4
618
OpenAir
TM
Interlocking plate for fire
protection applications
ASK79.1/…
Mechanical safety device
Rigid connection to the damper’s shaft
Correct functioning guaranteed up to 1,200 °C
Interlocking mechanically irreversible
Use
The patented ASK79.1/… interlocking plate is used in connection with fire protection
dampers. It is designed for rigid connection to the damper’s shaft. Whenever the plate
reaches a temperature of about 90 °C, it interlocks the shaft mechanically and irre-
versibly. Correct functioning is ensured up to 1,200 °C. The device is designed for one-
time use under high temperature conditions and must be replaced after a fire has oc-
curred. The ASK79.1 has been designed for use with OpenAir
TM
spring return damper
actuators type GGA126.1E… (AC 24 V) and GGA326.1E… (AC 230 V) supplied by
HVAC Products.

Summary of content (4 pages)