BRAHM TM BC Central Collector Series
FSS C OMPONENTS NOTE:
On multi motor units (BC24 and larger), components are duplicated for each module. These components include the potassium aerosol generator, louvers, heat sensors, and smoke sensor. Only one controller is used, but additional wiring and programming modifications are made to accommodate these components.
Key Switch
NOTE: The system can only be deactivated while the power is off. The key switch will not function once power to the panel has been turned on using the Disconnect.
The key switch is located on the front of the electrical door, and it is a retentive key switch. This means while the system is turned off, the key cannot be removed. It is recommended that the key be removed when the fire suppression system is active
as a visual check. The fire suppression system can only be deactivated when the power to the electrical disconnect is off. Once the power is on and the key has activated the fire suppression system, the system will not turn off even if the key switch is activated. The power must be off to deactivate the system. The key switch is wired fail safe so that if the wires are removed or cut, the fire suppression system is activated. The fire suppression system can be deactivated using the key switch. When changing the filters in the system per proper maintenance, dust can be dropper through cads and below the filter compartment. This dust can then trigger the smoke sensors in the valve compartment. To prevent this, it is recommended that the fire suppression be turned off using the key switch for several minutes upon restarting the system after a filter change. After several minutes, the fire suppression can be reactivated while the system is still running (it need not be restarted again). This process is only necessary after filter changes, not on all startups. If the key switch has been activated, the display will show “FSS OFF” as shown in the picture below.
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