Fire suppression & interlocks
Suppression servicing and extraction cleaning run on their own clocks - suppression roughly six-monthly, cleaning by cooking volume - but they cover the same canopy, so planning them together keeps the whole fire-safety picture current instead of leaving one half to drift.
The short answer
Suppression servicing and extraction cleaning run on their own clocks - suppression roughly six-monthly, cleaning by cooking volume - but they cover the same canopy, so planning them together keeps the whole fire-safety picture current instead of leaving one half to drift.
The detail
A wet chemical suppression system is serviced by a BAFE SP206 certificated provider, typically every six months, with a Certificate of Conformance issued each visit. That cadence is set by the suppression standards and does not flex much - it is a fixed rhythm of inspection, testing and recharge.
Extraction cleaning runs on a different logic. TR19 Grease sets frequency by how hard the system works - heavy use pointing to more frequent cleans, lighter use to less - measured and verified against a mean grease target rather than a fixed calendar. Two kitchens can sit on very different cleaning intervals.
Because the two clocks are set differently, they drift apart if left alone. You can end up with a suppression engineer certifying a canopy that is overdue a clean, or a spotless canopy whose suppression check lapsed months ago. Each visit then only sees half the picture.
Aligning them does not mean forcing the same interval. It means planning so that, wherever the schedules meet, the clean lands just before the suppression service - the engineer works on and certifies a degreased canopy - and neither discipline is allowed to lapse unnoticed while the other looks after itself.
What it means for you
The practical move is a single maintenance plan that holds both cadences side by side, with the cleaning interval set by TR19 and the suppression service on its six-monthly beat, and a note to sequence the clean ahead of the service when they coincide.
That sequencing pays off in the records. A suppression Certificate of Conformance dated just after a TR19 post-clean report tells a fire risk assessor or insurer that the canopy was clean when it was certified - a tidier, more defensible history than two visits that never acknowledged each other.
It also closes the gap where problems hide. When both cadences are managed together, a lapsed clean or an overdue service is visible on one plan, rather than being someone else's schedule that quietly slipped.
The service behind the guide
Sibling guides
Grease and automatic fire system failure · Fusible links and grease · Hotel kitchens, multiple outlets
Questions
Typically every six months by a BAFE SP206 certificated provider, who issues a Certificate of Conformance at each visit. That interval is set by the suppression standards and stays fairly fixed. Some insurers or higher-risk sites ask for a shorter cycle, but six months is the common baseline.
Under TR19 Grease, by cooking volume rather than a fixed date - heavy use more often, light use less - verified against a mean grease target. A heavy-use site may need clearing every three months, while a light-use kitchen can run closer to twelve.
Where they coincide, clean first. That way the suppression engineer works on and certifies a degreased canopy, and the two records show the canopy was clean when it was checked.
No. They run on different logic and rarely share an interval. The aim is to plan them together so the clean leads the service where they meet and neither is allowed to lapse.
So a lapsed clean or overdue service shows up in one place instead of slipping between two separate schedules. It also produces records that line up, which fire risk assessors and insurers read as a maintained system. One owner holding one plan is far harder to catch out than two contractors each assuming the other has it covered.
Phoenix Duct Clean · by the numbers
Phoenix Duct Clean fits your TR19 cleaning cadence around your suppression service, so the canopy is degreased before it is certified and both records stay current.