Filters equipped exhaust systems shall not operate with filters

Filters equipped exhaust systems shall not operate with filters

• A. Removed
• B. Installed
• C. Replaced
• D. Cleaned

Answer: (A)

The safety principle here is that grease-filtered exhaust systems must operate with the filters in place. The filters trap flammable grease and reduce the risk of ignition and buildup in the ductwork. If the filters are removed, unfiltered grease and heat can flow through the system, greatly increasing fire risk and making proper ventilation and protection fail. Therefore the correct completion is that the system shall not operate with the filter removed. Operating with the filter installed is normal, and options involving replacement or cleaning describe maintenance actions rather than the operating condition described by the rule.

The safety principle here is that grease-filtered exhaust systems must operate with the filters in place. The filters trap flammable grease and reduce the risk of ignition and buildup in the ductwork. If the filters are removed, unfiltered grease and heat can flow through the system, greatly increasing fire risk and making proper ventilation and protection fail. Therefore the correct completion is that the system shall not operate with the filter removed. Operating with the filter installed is normal, and options involving replacement or cleaning describe maintenance actions rather than the operating condition described by the rule.