What should you check before using a fire extinguisher?

Before using a fire extinguisher, it is essential to check the pressure gauge. The pressure gauge indicates whether the extinguisher is charged and ready for use. A reading in the green zone shows that the extinguisher is adequately pressurized, which is critical for it to function correctly in an emergency. If the gauge is in the red zone, indicating low or excessive pressure, the extinguisher may not work effectively or could be dangerous to use.

Other considerations might include checking the extinguisher's overall condition and ensuring that it is not expired, but the pressure gauge is the most immediate indicator of readiness for use. This ensures that you can act quickly and effectively in the event of a fire, as a properly charged extinguisher is vital for extinguishing the flames safely.