How often must pump tank water and calcium chloride based antifreeze types of extinguishers be recharged?

Pump tank water and calcium chloride based antifreeze extinguishers require recharging every 12 months to ensure that they remain effective and reliable in case of a fire. This annual maintenance schedule is crucial because over time, the antifreeze solution can become less effective due to environmental conditions, evaporation, or contamination.

Regular recharging captures the necessary inspection and maintenance aspects required by safety standards, ensuring that the extinguishers have the correct amount of extinguishing agent and are in proper working condition. This preventive measure is vital in maintaining the operational readiness of the firefighting equipment, as any lapse in this schedule could potentially allow for reduced effectiveness during an emergency.

The alternative time frames presented may not support the required standards for maintaining the effectiveness of the extinguishers, thereby increasing the risk of failure during use.