What must be checked
At a minimum:
- In its designated location
- Access and visibility not blocked
- Operating instructions legible and facing outward
- Safety seals / tamper indicators intact
- Fullness confirmed by weighing or lifting
- No obvious damage, corrosion, leakage, or clogged nozzle
- Pressure gauge/indicator in the operable range
- For wheeled units: tires, wheels, carriage, hose, and nozzle OK
Also check pin in place, hose/nozzle clear, and weigh CO₂ units (they have no useful gauge).
Not legal advice. AHJ may add more.