Quick answer
Fire extinguishers commonly need a monthly visual inspection (pressure gauge in range, seal and pin intact, no damage), periodic maintenance by a trained technician (often yearly), refilling after any use or when pressure or contents fall short, and hydraulic pressure testing at intervals set by the applicable standard. In India, IS 2190 is the commonly referenced standard; local fire authority requirements may also apply.
Common extinguisher types
| Type | Typical use | Inspection note |
|---|---|---|
| ABC dry powder (stored pressure) | General use: offices, homes, shops | Pressure gauge visible; powder can cake over time. |
| CO2 | Electrical panels, server rooms | No gauge — checked by weight. |
| Water / water mist | Ordinary combustibles | Not for electrical or oil fires. |
| Mechanical foam | Flammable liquids, kitchens, fuel areas | Foam solution has a limited shelf life. |
| Clean agent | Electronics, sensitive equipment | Leaves no residue; check by gauge or weight as per type. |
| Wet chemical (K-type) | Commercial kitchens | For cooking oil fires. |
Monthly visual inspection
Site staff can usually do this, with the AMC provider's guidance:
| Task | Frequency | Notes |
|---|---|---|
| Extinguisher in its marked place | Monthly | Visible, not blocked, mounted at a reachable height. |
| Pressure gauge needle in the green zone | Monthly | Stored-pressure types only. |
| Safety pin and tamper seal intact | Monthly | A broken seal may mean it was used or tampered with. |
| No dents, rust or leaks on the body | Monthly | Corrosion near the base is common in damp areas. |
| Hose and nozzle clear and undamaged | Monthly | Insects and dust block nozzles. |
| Label and instructions readable | Monthly | Operating instructions should face outwards. |
| Inspection tag updated | Monthly | Date and initials of whoever checked. |
Periodic maintenance by a technician
| Task | Frequency | Notes |
|---|---|---|
| Detailed external examination | Commonly yearly | Body, valve, hose, gauge, mounting. |
| Weigh CO2 and cartridge-type units | As per manufacturer / standard | Refill if weight loss exceeds the allowed limit. |
| Check powder condition | As per applicable standard | Caking or lumps mean the powder needs replacing. |
| Discharge test on a sample (where required) | As per applicable standard | Some standards require discharge of a portion of units periodically. |
| Replace O-rings and washers | During maintenance | As per manufacturer's instructions. |
| Update service label | Every maintenance | Date, work done, next due date, service provider. |
When to refill
- After any use — even a short discharge. A partly used extinguisher may not work next time.
- When pressure is out of range on the gauge.
- When weight loss is beyond the allowed limit for CO2 and cartridge types.
- When the agent has deteriorated — caked powder or expired foam.
- At the refill interval set by the manufacturer or applicable standard, even if unused.
Hydraulic pressure testing
Extinguisher cylinders need periodic hydraulic pressure testing to confirm they can safely hold pressure. The interval depends on the extinguisher type and the applicable standard. Units that fail, or show serious corrosion or damage, should be taken out of service. Most standards also set an overall service life for cylinders, after which they are replaced.
Records to keep
For each extinguisher, keep: location, type and capacity, serial number, manufacturing date, last refill date, last pressure test date, and next due dates. Fire safety audits and building inspections commonly ask for this register, so keep it ready on site.
Tips for fire safety AMC providers
- Number every extinguisher on site and map its location. It saves time on every visit.
- Group refills by due month to plan workshop capacity.
- Leave a replacement unit when you take one away for refilling, if your contract allows it.
- Train site staff on the monthly visual check — it catches problems between your visits.
Fire safety businesses can see how contracts and complaints are organised on our fire safety service management software page. More on AMC software and our AMC management software, or read the AMC contract format guide.
How AMCFlow helps
- Add each site's fire equipment as units under the customer, with AMC start and end dates.
- Customers can log in with WhatsApp OTP and raise a complaint through the customer portal — for example, after an extinguisher is used.
- Each complaint gets a number and can be assigned to a technician, who receives a WhatsApp job alert with customer, mobile, address, product, problem and complaint number.
- Expiry dashboard shows fire safety contracts nearing expiry.
Frequently asked questions
How often should fire extinguishers be inspected?
A visual inspection is commonly done monthly, with detailed maintenance by a trained technician often done yearly. Intervals depend on the type and the applicable standard.
When should a fire extinguisher be refilled?
After any use, when the pressure is out of range, when weight loss is beyond the allowed limit, when the agent has deteriorated, or at the refill interval set by the manufacturer or standard.
Which standard applies to fire extinguisher maintenance in India?
IS 2190 is the commonly referenced Indian standard for selection, installation and maintenance of portable extinguishers. Local fire authority requirements may also apply.
How is a CO2 extinguisher checked?
CO2 extinguishers usually have no pressure gauge, so they are checked by weight. If the weight loss is beyond the allowed limit, the unit needs refilling.
What records should be kept for fire extinguishers?
Location, type, capacity, serial number, manufacturing date, last refill date, last pressure test date and next due dates for each extinguisher.