Mains-Powered Detector Replacement • Aico 3000 Series Fitted • BS 5839-6 System Upgrade
We were recently called to a residential property in Blandford to carry out an upgrade of the existing fire alarm detectors.
During the visit it was identified that several of the mains-powered detectors were due for renewal to maintain system reliability and compliance with current recommendations under BS 5839-6 (the standard for fire detection in domestic premises).
Scope of Work
As part of the detector upgrade we:
- Removed the old/aged detectors that were nearing the end of their serviceable life
- Supplied and installed 3 new Aico 3000-series detectors
- 2 x optical smoke alarms
- 1 x heat detector
- Fitted fresh standby 3 V lithium batteries in each new unit
- Tested all devices to confirm correct signalling and operation
- Completed a full system check to ensure the existing BS 5839-6 framework remained fully functional
Why These Upgrades Matter
Detector renewal is an important part of keeping a BS 5839-6 system working reliably. Smoke and heat detectors have a finite service life, and over time their internal sensing elements can drift or become less sensitive — which can lead to:
- Missed detection of smoke or heat
- Increased risk of delayed alarm activation
- Potential safety and insurance compliance issues
The Aico 3000 series is a well-established range of domestic detectors that offer:
- Modern optical smoke sensing for early detection of smouldering fire conditions
- Dedicated heat detection for areas where smoke alarms aren’t suitable (e.g. kitchens)
- Long-life standby lithium batteries for reliable power support
System Performance
After installation:
- All devices were tested individually to confirm correct behaviour
- Communication with the existing control unit was verified
- Standby battery condition confirmed
- No faults were present on the panel post-service
The property’s fire detection remained fully compliant with BS 5839-6 recommendations, offering reliable life-safety protection for occupants.
Recommendations
- Test detectors monthly using the test button
- Replace batteries and detectors at recommended intervals
- Schedule regular servicing to maintain system performance and compliance
