Operation and Maintenance Manual (DTR) iSWAY
®
Set of products
Version 1.8 of 2.2021
93
If an actuator malfunction is detected, inform the SMAY service immediately. Do not repair or
replace the actuator yourself, only SMAY Service or an authorised SMAY Service Centre can do
so.
14.2.
Damper actuator of double intake module and distribution
damper for Primary and back-up
The BLE24 or BEN24 actuator (Fig. 14.5) is designed to control the dampers of the double
intake modules and the Primary and back-up Distribution Dampers. It opens and closes
automatically.
Fig.14.5. Damper actuators of the double intake module. BLE24 on the left and BEN24 on the right.
The actuator is powered by 24VDC.
During normal operation, one of the dampers defined as main should
be open (0° damper axis
position indication) and the reserve damper closed (90° damper axis position indication). If the
device sucks in smoke, the main damper is closed and the reserve damper is opened. The person
in charge of the rescue and firefighting action can return to the original state of the "Smoke
Detector Lock" placed on the TSS or TS panel.
NOTE!
If an actuator malfunction is detected, inform the SMAY service immediately. Do not repair or
replace the actuator yourself, only SMAY Service or an authorised SMAY Service Centre can do
so.
14.3.
Smoke detector in a duct casing
The UG-3-A40 smoke detector in a duct casing (Fig. 14.6) is a stand-alone smoke detector,
located
in a duct casing. A probe is placed in the airflow path through the iSWAY® unit. The
detector is equipped with relay outputs to signal alarm (smoke detection) and technical (service)
alarm.
If the smoke detector is dirty, its sensitivity increases, which can result in false smoke detection
alarms. The technical alarm signal indicates the need to perform maintenance such as cleaning
the detector or replacing it if it fails.
