Final answer:
Wheeled fire extinguishers are used in large-scale fire situations, often involving flammable liquids or foaming plastics, where handheld extinguishers are insufficient. A fluorinated solution in these extinguishers is effective at extinguishing large-scale fires, and they are an important part of comprehensive fire suppression systems.
Step-by-step explanation:
Wheeled fire extinguishers can be considered for use in situations where the fires are too large to be adequately addressed by handheld extinguishers, such as in industrial settings or emergencies involving foaming plastics or large quantities of flammable liquids. The use of wheeled fire extinguishers enables a larger volume of extinguishing agent to be transported and applied to the fire more efficiently. Such extinguishers are often filled with a fluorinated solution that can spread across the burning surface to extinguish the fire effectively, especially in cases involving organic liquids. They are critical in fire extinguisher systems intended to combat large-scale fires where traditional methods may fall short. It is essential to note that while dry-cleaning solvents were once used in fire extinguishers, they are no longer recommended due to safety concerns.