Final answer:
Fire extinguishers should be inspected annually and thoroughly serviced every 5 to 6 years. Older models using dry-cleaning solvents are not recommended, and new technology has introduced foaming plastics in fire suppression.
Step-by-step explanation:
Professional Servicing of Fire Extinguishers
Fire extinguishers should be professionally serviced on a regular basis to ensure they function correctly during an emergency.
While specific servicing intervals can vary, as a general rule, most fire extinguisher systems should undergo a basic inspection annually, with a more thorough examination and servicing every 5 to 6 years depending on the type of extinguisher.
Older fire extinguishers that used dry-cleaning solvents are no longer recommended for use due to the environmental and health risks associated with them. Additionally, with the development of newer materials, foaming plastics have been introduced into fire suppression technology. However, the most important factor is to follow the guidelines set by the manufacturer of the fire extinguisher and local fire safety regulations.