What indicates that a fire extinguisher has been tampered with?

The presence of signs of damage or a broken seal on a fire extinguisher is a key indicator that it may have been tampered with. Fire extinguishers are designed to be sealed until they are needed for use, and any tampering could compromise their effectiveness in an emergency. A broken seal can suggest that the extinguisher has been accessed or used, potentially affecting its ability to function properly.

While dust accumulation can indicate a lack of maintenance, it doesn't necessarily mean that the extinguisher has been tampered with. Similarly, if a fire extinguisher has been used previously, it could be normal wear and tear as part of regular maintenance, as extinguishers should be inspected even after they've been utilized. Incorrect labeling is also a concern as it can lead to confusion in an emergency; however, it doesn't directly indicate tampering. Ultimately, a broken seal or visible damage directly signals a risk of malfunction and potential misuse, making it the clear sign of tampering.