What should be the result of operating a means for deactivating double notification appliances?

What should be the result of operating a means for deactivating double notification appliances?

• A. An audible trouble notification appliance should be activated.
• B. All notification appliances deactivate.
• C. A silent alarm is triggered.
• D. A visual indicator lights.

Answer: (A)

When you use a means to deactivate double notification appliances, you’re creating a maintenance or supervisory condition in the fire alarm system. The appropriate response is to have an audible trouble notification appliance activate. This provides an unmistakable, attention-getting signal that part of the notification system is taken out of service, so occupants and maintenance personnel know the system isn’t operating in normal alarm mode and needs service or restoration. Silencing all notifications would leave occupants unaware of a fault, a silent alarm wouldn’t clearly indicate trouble, and a visual indicator alone might not sufficiently alert or distinguish the abnormal condition. The audible trouble signal ensures clear, standardized indication of the deactivation status.

When you use a means to deactivate double notification appliances, you’re creating a maintenance or supervisory condition in the fire alarm system. The appropriate response is to have an audible trouble notification appliance activate. This provides an unmistakable, attention-getting signal that part of the notification system is taken out of service, so occupants and maintenance personnel know the system isn’t operating in normal alarm mode and needs service or restoration. Silencing all notifications would leave occupants unaware of a fault, a silent alarm wouldn’t clearly indicate trouble, and a visual indicator alone might not sufficiently alert or distinguish the abnormal condition. The audible trouble signal ensures clear, standardized indication of the deactivation status.