Automatic Opening Vent (AOV) Smoke Control System Maintenance Checklist
Keep escape routes clear of smoke — monthly function tests of AOVs and smoke shafts, actuator and control panel checks, and battery and weather-seal verification.
What is an aov smoke control maintenance checklist?
A automatic opening vent (aov) smoke control system maintenance checklist is a structured list of the 10 preventive maintenance tasks — covering visual, functional, cleaning and record-keeping checks — that keep an automatic opening vent (aov) smoke control system running safely and reliably. It groups routine checks by frequency, from daily inspections to annual servicing, so FM teams and building engineers can plan and evidence preventive maintenance.
Core aov smoke control checks
- Inspect vent weather seals, hinges, and linkages for wear or seizure
- Test the smoke control panel raises the system on a simulated fire signal
- Clean vent louvres and actuator mechanisms where accessible
- Record monthly tests, the annual service, and defects in the log
What is an automatic opening vent (aov) smoke control system?
An automatic opening vent (AOV) smoke control system clears smoke from common corridors, stairwells, and lobbies to keep escape routes tenable and assist firefighting. On a fire signal, the smoke control panel opens vents, windows, or smoke-shaft dampers via electric or pneumatic actuators, often alongside mechanical smoke extract. Systems are designed to BS 9999 and BS 7346-8 and should be tested regularly — typically a monthly function test and a comprehensive annual service. They are commonly found in residential blocks, where they protect the single staircase.
This checklist is one of 16 in our fire safety maintenance checklists, covering fire dampers, alarms, emergency lighting, sprinklers, risers and fire doors — the statutory checks and their records.
Typical AOV Smoke Control maintenance checklist
A practical starting point for planned preventive maintenance. Always refer to the manufacturer's O&M manual and site-specific requirements.
Visual Checks
- Inspect vent weather seals, hinges, and linkages for wear or seizure
- Check head-of-shaft and ventilation openings are clear and unobstructed
Functional Checks
- Test the smoke control panel raises the system on a simulated fire signal
- Confirm each AOV, window, or smoke-shaft damper opens fully and reseals
- Check actuators (electric or pneumatic) operate smoothly without obstruction
- Verify manual override and reset controls function correctly
- Confirm the panel standby batteries are healthy and charging
- Confirm interface with the fire alarm and any mechanical extract is correct
Cleaning & Housekeeping
- Clean vent louvres and actuator mechanisms where accessible
Record Keeping
- Record monthly tests, the annual service, and defects in the log
Download the free AOV Smoke Control maintenance checklist PDF
Get all 10 tasks as a printable PDF — free, no signup needed. Keep a copy in the plant room, attach it to work orders, or share it with your maintenance contractor.
Typical maintenance frequency
Suggested intervals for automatic opening vent (aov) smoke control system maintenance. Actual frequencies should follow manufacturer guidance and site-specific risk assessments.
Monthly
- •Function test from the smoke control panel
- •Confirm vents open and reset
- •Check panel status and batteries
Annually
- •Full service to BS 7346-8
- •Actuator and linkage inspection
- •Cause-and-effect verification with fire alarm
- •Issue service certificate
Common faults and issues
Issues to be aware of when maintaining automatic opening vent (aov) smoke control system equipment.
Safety and compliance notes
Key safety considerations for automatic opening vent (aov) smoke control system maintenance. This is general guidance only — always follow OEM instructions, statutory requirements, and your organisation's safe systems of work.
Reference standards and frameworks
- United Kingdom
- The Regulatory Reform (Fire Safety) Order 2005 and the relevant BS 5306 / BS 9999 parts
- North America
- The applicable NFPA standards (e.g. NFPA 10, 25, 72, 80)
Frameworks commonly referenced when planning aov smoke control maintenance programmes. Always confirm the requirements that apply to your site and jurisdiction.
Managing AOV Smoke Control documentation with PM Assist
PM Assist helps FM and building operations teams search their O&M manuals and building drawings in seconds. Upload your automatic opening vent (aov) smoke control system documentation and ask questions like “When was the AOV system last serviced?” or “Which vents serve the main stair?” — and get source-cited answers instantly.
See PM Assist answer questions about a real aov smoke control manual — try the live demo, no signup needed.
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Inspection checklists for this asset
Maintenance keeps the asset working; a statutory inspection records whether it currently passes. Both usually apply.
Further reading on aov smoke control maintenance
Compliance topics for aov smoke control maintenance
Frequently asked questions
How often should an AOV system be tested?
What does an AOV do in a fire?
Who is responsible for AOV maintenance in a residential block?
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