Safety filters serve two functions: acting as a backup to the primary filter and protecting the engine during primary filter servicing.
• Serve as a backup filter if the primary filter is damaged or improperly installed.
• Prevent contaminants from entering the clean side of the air intake system during primary filter servicing.
• Designed to plug rapidly if contamination gets past the primary filter, alerting operators to an issue.
• Safety filters should be replaced with every third primary filter change unless the primary filter has failed.
