How can you determine if a fire extinguisher has been used?

To determine if a fire extinguisher has been used, one of the key indicators is the condition of the pressure gauge. If the gauge shows low pressure or if the cylinder is entirely empty, it suggests that the extinguisher has been activated and potentially used to extinguish a fire. When a fire extinguisher is discharged, it releases its contents, and as a result, the pressure inside the cylinder will drop, which is reflected in the gauge reading.

The pressure gauge serves as a critical mechanism for assessing whether the extinguisher is still operational or if it has been depleted through use. Regular checks of the gauge are essential in ensuring that fire safety equipment is ready for potential emergencies. Understanding this helps ensure that users can act decisively and efficiently in the event of a fire, enhancing overall safety preparedness.