What should be done if a fire extinguisher gauge has moved after checking?

If a fire extinguisher gauge has moved from its optimal position, it signifies that the extinguisher may not be functioning properly or may not be charged, which is crucial for its effectiveness in an emergency. The movement of the gauge indicates that the extinguisher may not be ready for use, which can lead to dangerous situations if a fire occurs and the extinguisher fails to operate.

Choosing to replace the extinguisher is the most prudent course of action in this scenario. A fire extinguisher with a faulty gauge cannot be relied upon, and replacing it ensures that a fully operational unit is available for effective fire suppression when needed. While refilling or testing may seem like options, they do not guarantee that the extinguisher will meet safety standards or function properly. Simply doing nothing would leave a potential safety hazard unaddressed, risking life and property in the event of a fire. Therefore, replacing the extinguisher is the correct step to ensure safety and preparedness.