If an extinguisher has been discharged, even partially, what should be done before reuse?

• A. Recharge only
• B. Replace only
• C. Recharge or replace; re-label and ensure it is serviced before reuse
• D. Continue to use and record discharge

Answer: (C)

After an extinguisher has been discharged, even partially, it can no longer be assumed ready to work. The release of the agent may have reduced pressure, and the cylinder, valve, seals, or other components could be damaged. The unit should then be evaluated by a qualified technician to decide if it can be recharged or must be replaced.

If it can be safely recharged, the technician will restore the proper charge and pressure and reinstall any necessary components. If the extinguisher cannot be safely recharged, it must be replaced. In either case, the unit should be re-labeled to reflect that it has been serviced and recharged or replaced, with the date and the technician’s information, and it should be inspected and serviced according to the manufacturer’s requirements before it is placed back into service. This ensures reliability and compliance with safety standards.

Continuing to use a discharged extinguisher without service is unsafe and not permitted.