• Smoke Detector Cleaning and Sensitivity Testing

  • Cleaning Frequency and Methods
    Each smoke detector including duct type smoke detectors will be cleaned annually.  ESCO will clean all smoke detectors with compressed air to help remove loose debris and prolong the life of the devices. “As-Needed” Cleaning will be performed on Analog/Intelligent Systems where the Fire Alarm Control Unit or Panel is capable of displaying or reporting to a connected printer or display the % Obscuration, or other similar method used by each detector. Detectors found to be at 50% or greater from this report will be cleaned during each scheduled inspection. ESCO will provide a report detailing which detectors were cleaned at the conclusion of each inspection.

    Sensitivity Testing Methods 
    Following cleaning as set forth above, each smoke detector will have its Sensitivity tested using one of the following methods as appropriate and in accordance with the most current edition of NFPA 72 – National Fire Alarm Code.

    • Calibrated Test Method
    • Manufacturer’s Calibrated Sensitivity Test Instrument
    • Listed Control Equipment arranged for the purpose
    • Smoke detector / Control unit arrangement whereby the detector causes a signal at the control unit when it’s sensitivity is outside of its listed sensitivity range.

    A smoke detector cleaning program is important to the overall performance of a life safety system. Clean smoke detectors will allow the detectors to operate as originally designed. Detector cleaning also has a significant impact on the reduction of unnecessary and disruptive false alarms.