Maintaining a Wireless Fire Alarm System

Monthly Checks (User Responsibility)

• Test all detectors: Press the test button on every smoke and heat detector to confirm that the alarm sounds. For interconnected systems, verify that all linked alarms sound when one is triggered.
• Inspect the control panel: Check the main panel for any error codes, trouble signals, or blinking lights that indicate a fault with a specific device. These modern systems can often pinpoint the exact detector with an issue, such as a low battery.
• Clear visual obstructions: Ensure that all detectors are clean and free from dust and debris. Verify that nothing is blocking the devices or the path of the visual notification appliances (strobes).
• Check accessibility: Confirm that all manual call points (pull stations) and fire extinguishers are unobstructed and easily accessible.

Annual Maintenance (User Responsibility)

• Replace batteries: Replace the batteries in every device, including detectors and manual pull stations, at least once a year. If a detector issues a low-battery chirp, replace the battery immediately. It is often recommended to change all batteries on the same day for a consistent replacement schedule.
• Replace outdated devices: Fire alarm devices do not last forever. For residential-grade detectors, replace the entire unit every 8–10 years.

Professional Inspections (Recommended Annually)

• Comprehensive testing: Perform a full functional test of all system components. This includes testing detectors with smoke and heat simulation tools to verify they activate under real-world conditions.
• Battery load testing: Ensure the integrity of the backup batteries in the control panel and individual devices. For commercial systems, the backup battery must provide power for at least 24 hours in case of a power outage.
• Signal supervision check: Verify that the system’s communication path is functioning correctly and is not susceptible to interference. NFPA 72 requires wireless systems to check in with a supervising station at regular intervals to detect communication failures.
• Address potential interference: Address any interference issues with other wireless gadgets, like cordless phones or baby monitors, that could disrupt the system’s communication.
• Firmware updates: If applicable, update the system’s software to improve performance and security.
• Detailed record-keeping: Document all inspection, testing, and maintenance activities for compliance purposes. This log should detail any corrective actions taken and any remaining deficiencies.

False Alarm Prevention

• Adjust sensitivity settings: If your system has adjustable sensitivity, a professional can fine-tune the detectors to prevent false alarms from environmental factors like steam or cooking smoke.
• Relocate problem devices: If a detector is routinely triggered by its proximity to a stove or bathroom, a professional can safely relocate it to a more suitable location.