Keep clear!
Are your fire extinguishers easily accessible at all times?
Are they free from obstruction?
Do you monitor and record your checks to ensure this is always the case?
Fire Extinguishers must be available and unobstructed at all times, and should not be moved from where they are mounted on the wall or on a dedicated floor mount, except for if they are needed for firefighting (not propping open doors!)
Working regular checks into your existing monitoring systems can help to ensure this.