What should be included in routine checks for Type B extinguishers?

Routine checks for Type B extinguishers are crucial for ensuring they function properly when needed, especially since they are designed to extinguish flammable liquid fires such as those involving grease, oil, and solvents. One of the most critical aspects of these checks is ensuring the pressure gauge is in the green zone. A gauge in this area indicates that the extinguisher is fully charged and ready for use. If the gauge is in the red zone (either too low or too high), it signifies a problem that may prevent the extinguisher from working effectively in an emergency.

While checking for dust accumulation can be beneficial for the overall maintenance of equipment and ensuring visibility and accessibility, it does not directly impact the operational readiness of the extinguisher. Additionally, confirming compatibility with Class A fires is not relevant for Type B extinguishers, which are specifically designed for flammable liquids and not solids such as wood or paper.

Therefore, ensuring that the pressure gauge is in the green is a vital part of the routine checks for Type B extinguishers, as it directly relates to their readiness and effectiveness in case of a fire incident.